JP2001024536A - Receiver for dual mode wireless terminal - Google Patents

Abstract

(57) [Summary] [Problem] To provide a dual-mode wireless terminal receiving device that supports dual mode and can achieve a significant reduction in size, weight, cost, and power consumption compared to conventional devices. The purpose is to do. SOLUTION: A high carrier mode receiver 1 for processing a high carrier mode signal having a higher carrier frequency among dual modes for supporting two systems, and a lower carrier frequency having a lower carrier frequency among the dual modes. A low-carrier mode receiving unit 2 for processing a signal in a low-carrier mode, comprising: a low-carrier mode receiving unit 2 for processing a signal in a low-carrier mode. The local oscillator 7 for outputting a local signal is shared by the high carrier mode mixer 5 and the low carrier mode mixer 6 for lowering the frequency of the low carrier mode signal output from the low carrier mode RF section 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual mode radio system in which one terminal supports two systems, for example, an iridium of a satellite portable telephone which supports a satellite communication system and a terrestrial cellular system with the same terminal device. The present invention relates to a receiving device of a terminal device.

[0002]

2. Description of the Related Art In recent years, dual-mode terminals have been studied in various wireless communication systems such as satellite portable telephone systems.

[0003] A receiving device of a conventional dual mode wireless terminal device will be described below.

FIG. 9 is a block diagram showing a receiving device of a conventional dual mode wireless terminal device. In the following description, for the sake of simplicity, for convenience, the mode having the higher carrier frequency is called the high carrier mode, and the mode having the lower carrier frequency is set to the low mode. Called carrier mode.

In FIG. 1, 1E is a high carrier mode receiving section for receiving and processing a high carrier mode signal, 2E is a low carrier mode receiving section for receiving and processing a low carrier mode signal, and 3 is a high carrier mode signal. A high carrier mode RF section for amplifying the signal, 4 is a low carrier mode RF section for amplifying the low carrier mode signal, and 5 is a high carrier wave for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section 3. A mode mixer, 6 is a low carrier mode mixer for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit 4, 9 is a low carrier mode IF unit for amplifying an output signal from the low carrier mode mixer 6, Reference numeral 10 denotes a low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF unit 9, and 11 denotes a low carrier mode IF mixer 1. , A high carrier mode demodulation unit 12 for demodulating an input signal and outputting a high carrier mode demodulation signal a, and 13 a low carrier mode demodulation signal b for demodulating an input signal. , A low carrier mode demodulation unit for outputting a high carrier mode antenna,
5 is a low carrier mode antenna, 26 is a quadrature demodulation unit that outputs a local oscillation signal to the high carrier mode mixer 5, 32 is a high carrier mode IF unit that amplifies the output signal from the high carrier mode mixer 5, and 33 is a high carrier mode. A high carrier mode IF mixer for lowering the frequency of an output signal from the IF unit 32, an IF local oscillator 34 for outputting an IF local oscillator signal to a high carrier mode IF mixer 33, and a local oscillator for a low carrier mode mixer 6 35 This is a local oscillator that outputs a signal.

The operation of the receiving device of the dual mode wireless terminal device configured as described above will be described.

First, a high carrier mode reception signal received from the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and the output thereof is mixed with the output of the quadrature demodulation section 26 by the high carrier mode mixer 5. Further, this output is amplified by the high carrier mode IF section 32, and the output is mixed with the output of the IF local oscillator 34 by the high carrier mode IF mixer 33. And the high carrier mode IF mixer 3 downconverted to the baseband band.
The high carrier mode demodulation unit 12 which has received the output of No. 3 demodulates the high carrier mode transmission signal and outputs it as a high carrier mode demodulation signal a.

The low carrier mode reception signal received from the low carrier mode antenna 15 is a low carrier mode RF signal.
The output is amplified by the unit 4 and the output is mixed with the output of the local oscillator 35 by the low carrier mode mixer 6. Further, the output is amplified by the low carrier mode IF section 9, and the output is mixed with the output of the IF local oscillator 11 by the low carrier mode IF mixer 10. And the low carrier mode IF mixer 1 down-converted to a baseband band.
The low carrier mode demodulation unit 13 which has received the output of 0 demodulates the low carrier mode transmission signal and outputs it as a low carrier mode demodulation signal b.

[0009]

However, in the above-described conventional dual-mode wireless terminal receiving apparatus, since the receiving units of the two modes are housed in the same receiving apparatus, a single mode that supports only one mode is provided. Terminal size, weight, cost,
There is a problem that power consumption is greatly increased to nearly double.

[0010] The receiving device of the dual mode wireless terminal device supports the dual mode,
There is a demand for a significant reduction in size, weight, cost, and power consumption as compared with the related art.

An object of the present invention is to provide a dual-mode radio terminal receiving apparatus that supports dual mode and can achieve a significant reduction in size, weight, cost, and power consumption as compared with the related art. With the goal.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a receiving apparatus for a dual-mode wireless terminal according to the present invention comprises:
A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes to support two systems, and a low carrier mode signal having a lower carrier frequency of the dual modes And a low carrier mode receiving unit for processing the high carrier mode signal, wherein the high carrier mode receiving unit amplifies the high carrier mode signal received by the high carrier mode antenna. , A high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a half of the frequency of the high carrier mode signal with respect to the output signal from the high carrier mode mixer. A signal that is sampled at a certain sampling frequency and appears in the low range around the sampling frequency A down-sampling unit for extracting aliasing components, and a high-carrier mode demodulation unit for demodulating an output signal of the down-sampling unit and outputting a high-carrier mode demodulation signal, and a low-carrier mode receiving unit is a low-carrier mode antenna. A low carrier mode RF section for amplifying the received low carrier mode signal, a low carrier mode mixer for reducing the frequency of the low carrier mode signal output from the low carrier mode RF section, a high carrier mode mixer and a low carrier mode A local oscillator for outputting a local signal to the mixer, a low carrier mode IF section for amplifying the output signal from the low carrier mode mixer, and a low carrier mode for lowering the frequency of the output signal from the low carrier mode IF section An IF mixer, an IF local oscillator for outputting an IF local signal to the low carrier mode IF mixer, and a low carrier mode. Demodulates the output signal of the IF mixer has a structure having a low carrier mode demodulation unit that outputs a low-carrier mode demodulation signal.

As a result, it is possible to obtain a dual-mode radio terminal receiving apparatus which supports dual mode and can achieve a significant reduction in size, weight, cost, and power consumption as compared with the related art.

[0014]

1 is a block diagram showing a configuration of a dual mode wireless terminal apparatus according to a first embodiment of the present invention; A high-carrier mode receiving unit for processing, and a low-carrier mode receiving unit for processing a low-carrier mode signal of a lower carrier frequency of the dual mode, a dual-mode wireless terminal device having a receiving device, The high carrier mode receiving section includes a high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, and a high carrier wave for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section. The mode mixer and a signal having a frequency that is half the frequency of the high carrier mode signal with respect to the output signal from the high carrier mode mixer. A down-sampling unit that samples at the sampling frequency and extracts the aliasing component of the signal that appears in the low frequency band around the sampling frequency, and a high-carrier mode that demodulates the output signal of the down-sampling unit and outputs the high-carrier mode A demodulation unit,
The low carrier mode receiving unit includes a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier wave for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit. A mode mixer, a local oscillator that outputs a local signal to a high carrier mode mixer and a low carrier mode mixer, a low carrier mode IF section that amplifies an output signal from the low carrier mode mixer, and a low carrier mode IF section. Low-frequency mode IF mixer for lowering the frequency of the output signal, low-frequency mode oscillator for outputting a low-frequency mode oscillator to the low-frequency mode IF mixer, and low-frequency mode by demodulating the output signal of the low-frequency mode IF mixer And a low carrier mode demodulation section for outputting a demodulated signal.

With this configuration, the local oscillator is shared between the high carrier mode and the low carrier mode, and the IF local oscillator in the high carrier mode is not required, so that the size, weight, cost and cost can be reduced. This has the effect of reducing power consumption.

A receiving apparatus for a dual mode wireless terminal device according to claim 2 is a high carrier mode receiving apparatus for processing a signal of a high carrier mode having a higher carrier frequency among dual modes for supporting two systems. Department and
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF section for amplifying the high carrier mode signal received by the antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a high carrier mode mixer A down-sampling unit that samples the output signal at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal that appears in a low band around the sampling frequency; High carrier mode to demodulate the output signal and output the high carrier mode demodulated signal. A low carrier mode receiving section, a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF section. Low carrier mode mixer for lowering frequency, voltage controlled local oscillator for outputting local signal to high carrier mode mixer and low carrier mode mixer, and low carrier mode for amplifying output signal from low carrier mode mixer IF section,
A low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF unit;
An IF local oscillator for outputting an IF local signal to the F mixer;
A low carrier mode demodulation unit for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulation signal;
A frequency deviation extractor that inputs an output signal of the low carrier mode IF mixer, extracts a carrier frequency deviation component between transmission and reception in the low carrier mode, and voltage controls a voltage-controlled local oscillator in a direction to reduce the carrier frequency deviation component. And

According to this configuration, in addition to the same function as the first aspect, the oscillating frequency of the voltage-controlled local oscillator is stabilized.

A high carrier mode receiving unit for processing a signal of a high carrier mode having a higher carrier frequency among dual modes for supporting two systems is provided. And a low carrier mode receiving unit that processes a signal of a low carrier mode of a lower carrier frequency of the dual mode, and a receiving device of a dual mode wireless terminal device, wherein the high carrier mode receiving unit has a high carrier mode receiving unit. High carrier mode RF amplifies high carrier mode signal received by carrier mode antenna
, A high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a half of the frequency of the high carrier mode signal with respect to the output signal from the high carrier mode mixer. A down-sampling unit that performs sampling at a certain sampling frequency and extracts a folded component of a signal appearing in a low band around the sampling frequency, and a high-carrier wave that demodulates an output signal of the down-sampling unit and outputs a high-carrier mode demodulation signal A low-carrier mode receiving section, wherein the low-carrier mode receiving section is configured to amplify the low-carrier mode signal received by the low-carrier mode antenna; and a low-carrier mode signal output from the low-carrier mode RF section. Carrier mode mixer for lowering the frequency of the signal, and a local oscillator for outputting a local signal. A frequency divider that outputs a frequency-divided signal obtained by dividing a local signal from a local oscillator to a high carrier mode mixer and a low carrier mode mixer, and a low carrier mode IF section that amplifies an output signal from the low carrier mode mixer A low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF section; an IF local oscillator for outputting an IF local signal to the low carrier mode IF mixer; and an output of the low carrier mode IF mixer A low-carrier mode demodulation unit for demodulating a signal and outputting a low-carrier mode demodulation signal; and inputting an output signal of a low-carrier mode IF mixer, extracting a carrier frequency deviation component between transmission and reception in the low carrier mode, and performing carrier frequency deviation. And a frequency deviation extraction unit for controlling the frequency division ratio of the frequency divider in the direction of reducing the components.

According to this configuration, in addition to the same operation as that of the first aspect, there is an operation that the control of the local oscillation frequency is facilitated.

A receiving device for a dual mode wireless terminal device according to claim 4 is a high carrier wave mode receiving device for processing a signal of a high carrier wave mode having a higher carrier frequency among the dual modes for supporting two systems. Department and
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF section for amplifying the high carrier mode signal received by the antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a high carrier mode mixer A down-sampling unit that samples the output signal at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal that appears in a low band around the sampling frequency; High carrier mode to demodulate the output signal and output the high carrier mode demodulated signal. A low carrier mode receiving section, a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF section. Low carrier mode mixer for lowering frequency, voltage controlled local oscillator for outputting local signal to high carrier mode mixer and low carrier mode mixer, and low carrier mode for amplifying output signal from low carrier mode mixer IF section,
A low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF unit;
An IF local oscillator for outputting an IF local signal to the F mixer;
A low carrier mode demodulation unit for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulation signal;
A frequency deviation extractor for inputting the output signal of the low carrier mode IF mixer and extracting a carrier frequency deviation component between transmission and reception in the low carrier mode; and a voltage controlled local oscillator that monitors the extracted carrier frequency deviation component while monitoring the extracted carrier frequency deviation component. The control voltage applied to the voltage-controlled local oscillator such that the output is scanned in several steps, and after one round of scanning, the output of the voltage-controlled local oscillator whose monitored carrier frequency deviation component to be monitored is the minimum is obtained. After resetting, a frequency deviation coarse control / fine adjustment unit for finely adjusting the control voltage so that the extracted carrier frequency deviation component to be monitored further converges to near zero.

According to this configuration, in addition to the function similar to that of the first aspect, the control of the local oscillation frequency is speeded up.

According to a fifth aspect of the present invention, there is provided a receiving apparatus for a dual mode wireless terminal device, which processes a signal in a high carrier mode having a higher carrier frequency among dual modes for supporting two systems. Department and
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF section for amplifying the high carrier mode signal received by the antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a high carrier mode mixer (1/2 + α) (α) of the frequency of the high carrier mode signal with respect to the output signal
> 0), a down-sampling unit that performs sampling at a sampling frequency and extracts a folded component of a signal that appears in a low frequency band around the sampling frequency, and outputs an output signal of the down-sampling unit to a baseband orthogonal component at a local oscillation frequency α. A quadrature demodulator for down-converting the baseband signal into an in-phase component and a phase demodulator for demodulating a baseband signal in a phase plane composed of the quadrature component and the in-phase component to output a high carrier mode demodulation signal. The receiving unit is a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode mixer for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit. A local oscillator that outputs a local signal to the high carrier mode mixer and the low carrier mode mixer; A low carrier mode IF section for amplifying an output signal from the transmit-mode mixer, the low carrier mode I
A low carrier mode IF mixer for lowering the frequency of the output signal from the F section, an IF local oscillator for outputting an IF local signal to the low carrier mode IF mixer, and a low carrier mode I
A low carrier mode demodulation section for demodulating the output signal of the F mixer and outputting a low carrier mode demodulation signal.

According to this configuration, in addition to the same operation as that of the first aspect, there is an operation that the high carrier mode demodulated signal is made accurate.

[0024] A receiving device for a dual mode wireless terminal device according to claim 6 is a high carrier wave mode receiving device for processing a signal of a high carrier wave mode having a higher carrier frequency among the dual modes for supporting two systems. Department and
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF section for amplifying the high carrier mode signal received by the antenna; a quadrature demodulation section for down-converting an output signal from the high carrier mode RF section into a quadrature component and an in-phase component of an IF; A down-sampling unit that samples the output signal at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal that appears in a low band around the sampling frequency; A phase demodulation section for demodulating the output signal and outputting a high carrier mode demodulation signal; The mode receiving section includes a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode mixer for reducing the frequency of the low carrier mode signal output from the low carrier mode RF section. A local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer; a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer; and an output from the low carrier mode IF section. A low carrier mode IF mixer for lowering the frequency of the signal;
I to output IF local oscillation signal to low carrier mode IF mixer
An F-station oscillator and a low carrier mode demodulator for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal.

According to this configuration, in addition to the same function as that of the fifth aspect, since a high carrier mode mixer is not required, the size, weight, cost, and power consumption can be further reduced. .

A receiving apparatus for a dual mode wireless terminal device according to claim 7, which receives a high carrier mode signal for processing a signal of a higher carrier mode having a higher carrier frequency among the dual modes for supporting two systems. Department and
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF section for amplifying the high carrier mode signal received by the antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a high carrier mode mixer A down-sampling unit that samples the output signal at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal that appears in a low band around the sampling frequency; High carrier mode to demodulate the output signal and output the high carrier mode demodulated signal. A demodulation unit, a frequency deviation extraction unit that inputs an output signal of the downsampling unit and extracts a carrier frequency deviation component between transmission and reception in the high carrier mode, and a downsampling unit that reduces the extracted carrier frequency deviation component. Having a down-sampling frequency control unit that controls the sampling frequency, the low carrier mode receiving unit, a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna,
A low carrier mode mixer for lowering the frequency of the low carrier mode signal output from the low carrier mode RF section, a local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer, and a low carrier wave A low carrier mode IF section for amplifying an output signal from the mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and a low carrier mode IF
An IF local oscillator that outputs an IF local oscillator signal to a mixer, and a low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer and outputs a low carrier mode demodulated signal.

According to this configuration, in addition to the same operation as that of the first aspect, there is an operation that the high carrier mode demodulated signal is further accurate.

[0028] A receiving device for a dual mode wireless terminal device according to claim 8 is a high carrier wave mode receiving device for processing a signal of a high carrier wave mode having a higher carrier frequency among the dual modes for supporting two systems. Department and
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF unit that amplifies the high carrier mode signal received by the antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF unit, and a high carrier mode mixer A down-sampling unit that samples the output signal at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal that appears in a low band around the sampling frequency; Π / phase shifts the output signal by π / 2 to generate baseband orthogonal components. A phase demodulator for demodulating an output signal of the downsampling unit on a phase plane including a baseband quadrature component and an in-phase component of an output signal of the downsampling unit and outputting a high carrier mode demodulation signal; A low carrier mode receiving unit, a low carrier mode RF unit for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit. A carrier mode mixer, a local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer, a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, and a low carrier mode IF section Low-carrier mode IF mixer to reduce the frequency of the output signal from IF to output
It has a local oscillator and a low carrier wave mode demodulator for demodulating an output signal of the low carrier wave mode IF mixer and outputting a low carrier wave mode demodulation signal.

According to this configuration, in addition to the same operation as that of the first aspect, there is an operation that the high carrier wave mode demodulated signal is further accurate.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

(Embodiment 1) FIG. 1 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 1 of the present invention.

In FIG. 1, 1 is a high carrier mode receiving section, 2 is a low carrier mode receiving section, 3 is a high carrier mode RF section for amplifying a high carrier mode signal received by the high carrier mode antenna 14, and 5 is a high carrier mode RF section. A high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the carrier mode RF section 3;
A down-sampling unit that performs sampling at a sampling frequency that is half the frequency of the high carrier mode signal with respect to the output signal from
12 is a high carrier mode demodulation section for demodulating the output signal of the down sampling section and outputting a high carrier mode demodulation signal a. 4 is a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna 15. , 6 are low carrier mode mixers for lowering the frequency of the low carrier mode signal output from the low carrier mode RF section 4, 7
Is a local oscillator that outputs a local signal to the high carrier mode mixer 5 and the low carrier mode mixer 6, and 9 is a low carrier mode IF that amplifies the output signal from the low carrier mode mixer.
And 10, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section 9, 11 an IF local oscillator for outputting an IF local signal to the low carrier mode IF mixer 10, and 13 a low oscillator. Carrier mode IF mixer 1
This is a low carrier mode demodulation unit that demodulates an output signal of 0 and outputs a low carrier mode demodulation signal b. The high carrier mode receiving unit 1 and the low carrier mode receiving unit 2 constitute a receiving device of a dual mode wireless terminal device.

The operation of the receiving apparatus configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and its output is mixed with the output of the local oscillator 7 by the high carrier mode mixer 5. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 has been input samples the frequency of the high carrier mode signal, that is, の of the carrier frequency, as a sampling frequency, and outputs a signal appearing in a low band around the sampling frequency. Extract aliasing components. This folded component is a baseband signal from which the carrier has been removed. From this, the high carrier mode demodulation unit 12 demodulates the high carrier mode transmission signal, and outputs the result as a high carrier mode demodulation signal a.

The low carrier mode signal received by the low carrier mode antenna 15 is amplified by the low carrier mode RF section 4, and its output is mixed with the output of the local oscillator 7 by the low carrier mode mixer 6. In addition, this output
The output is amplified by the low carrier mode IF section 9 and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode IF mixer 1
The low carrier mode demodulation unit 13 that has received the baseband signal output from 0 demodulates the low carrier mode transmission signal and outputs the result as a low carrier mode demodulation signal b.

As described above, according to the present embodiment, the local oscillator 7 is shared between the high carrier mode and the low carrier mode, and the IF local oscillator 11 in the high carrier mode.
Is not required, so that a reduction in size, weight, cost, and power consumption can be achieved.

(Embodiment 2) FIG. 2 is a block diagram showing a receiving device of a dual mode wireless terminal device according to Embodiment 2 of the present invention.

In FIG. 2, the high carrier mode receiving unit 1,
High carrier mode RF section 3, high carrier mode mixer 5, downsampling section 8, high carrier mode demodulation section 12, high carrier mode antenna 14, low carrier mode antenna 1
5, low carrier mode RF section 4, low carrier mode mixer 6, low carrier mode IF section 9, low carrier mode IF mixer 10, IF local oscillator 11, low carrier mode demodulation section 1.
3 is the same as that of FIG. 2A is a low carrier mode receiver, 16 is an output signal of the low carrier mode IF mixer 10, and a carrier frequency deviation component between transmission and reception in the low carrier mode is extracted to reduce the carrier frequency deviation component. A frequency deviation extractor for voltage-controlling the controllable local oscillator 17 is a voltage-controlled local oscillator that outputs a local signal to the high carrier mode mixer 5 and the low carrier mode mixer 6.

The operation of the receiving apparatus configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and its output is mixed with the output of the voltage-controlled local oscillator 17 by the high carrier mode mixer 5. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 has been input samples the frequency of the high carrier mode signal, that is, の of the carrier frequency, as a sampling frequency, and outputs a signal appearing in a low band around the sampling frequency. Extract aliasing components. This folded component is a baseband signal from which the carrier has been removed. From this, the high carrier mode demodulation unit 12 demodulates the high carrier mode transmission signal, and outputs the result as a high carrier mode demodulation signal a.

The low carrier mode signal received by the low carrier mode antenna 15 is amplified by the low carrier mode RF section 4, and its output is mixed with the output of the voltage-controlled local oscillator 17 by the low carrier mode mixer 6. You. Further, this output is amplified by the low carrier mode IF unit 9, and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode I
The low carrier mode demodulation unit 13 that has received the baseband signal output from the F mixer 10 demodulates the low carrier mode transmission signal, and outputs the result as a low carrier mode demodulation signal b. On the other hand, the low carrier mode IF mixer 1
From the output of 0, a frequency deviation extracting unit 16 extracts a frequency deviation between transmission and reception in the low carrier mode, and controls the voltage-controlled local oscillator 17 in a direction in which the frequency deviation converges to zero.

As described above, according to the present embodiment, the voltage-controlled local oscillator 17 is shared between the high carrier mode and the low carrier mode, and the IF local oscillator 11 in the high carrier mode becomes unnecessary. Therefore, the size, weight, cost and power consumption can be reduced, and the oscillation frequency of the voltage-controlled local oscillator 17 can be stabilized by the frequency deviation extractor 16.

(Embodiment 3) FIG.3 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 3 of the present invention.

In FIG. 3, high carrier mode receiving section 1
High carrier mode RF section 3, high carrier mode mixer 5, downsampling section 8, high carrier mode demodulation section 12, high carrier mode antenna 14, low carrier mode antenna 1
5, low carrier mode RF section 4, low carrier mode mixer 6, low carrier mode IF section 9, low carrier mode IF mixer 10, IF local oscillator 11, low carrier mode demodulation section 1.
3 is the same as that of FIG. Reference numeral 2B denotes a low carrier mode receiver, and 18 an input signal of the low carrier mode IF mixer 10 to extract a carrier frequency deviation component between transmission and reception in the low carrier mode, and to reduce the carrier frequency deviation component, which will be described later. A frequency deviation extracting unit for controlling the frequency division ratio of the frequency divider 20, a voltage-controlled local oscillator 19 for outputting a local signal, and a frequency-divided local oscillator signal 20 from the voltage-controlled local oscillator 19 This is a frequency divider that outputs a signal to the high carrier mode mixer 5 and the low carrier mode mixer 6.

The operation of the receiving device configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and its output is connected to the output of the voltage controlled type local oscillator 19 via the frequency divider 20 and the high carrier mode mixer. 5 is mixed. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 has been input samples the frequency of the high carrier mode signal, that is, の of the carrier frequency, as a sampling frequency, and outputs a signal appearing in a low band around the sampling frequency. Extract aliasing components. This folded component is a baseband signal from which the carrier has been removed. From this, the high carrier mode demodulation unit 12 demodulates the high carrier mode transmission signal, and outputs the result as a high carrier mode demodulation signal a.

The low carrier wave mode signal received by the low carrier wave mode antenna 15 is amplified by the low carrier wave mode RF section 4, and the output is output from the voltage controlled local oscillator 19 via the frequency divider 20 and the low carrier wave. Mixing is performed by the mode mixer 6. Further, this output is output to the low carrier mode IF section 9.
The output is mixed with the output of the low carrier mode IF local oscillator 11 and the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode demodulator 1 to which a baseband signal output from low carrier mode IF mixer 10 is input
3 demodulates the low carrier mode transmission signal and outputs the result as a low carrier mode demodulation signal b. On the other hand, the frequency deviation extracting unit 18 extracts a frequency deviation between transmission and reception in the low carrier mode from the output of the low carrier mode IF mixer 10, and controls the frequency division ratio of the frequency divider 20 so that the frequency deviation converges to zero.

As described above, according to the present embodiment, the voltage controlled local oscillator 19 and the frequency divider 20 are shared between the high carrier mode and the low carrier mode, and the IF local oscillator in the high carrier mode. Since the oscillator 11 is not required, the size, weight, cost, and power consumption can be reduced, and the control of the local oscillation frequency can be facilitated by the frequency deviation extracting unit 18.

(Embodiment 4) FIG. 4 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 4 of the present invention.

In FIG. 4, high carrier wave mode receiving section 1
High carrier mode RF section 3, high carrier mode mixer 5, downsampling section 8, high carrier mode demodulation section 12, high carrier mode antenna 14, low carrier mode antenna 1
5, low carrier mode RF section 4, low carrier mode mixer 6, low carrier mode IF section 9, low carrier mode IF mixer 10, IF local oscillator 11, low carrier mode demodulation section 1.
3. Since the voltage-controlled local oscillator 17 is the same as that shown in FIG. 2C is a low carrier mode receiver, 21 is an output of the voltage-controlled local oscillator 17 in several steps while monitoring the extracted carrier frequency deviation component, and after one round of scanning, the extracted carrier frequency deviation to be monitored. After resetting the control voltage applied to the voltage-controlled local oscillator 17 so that the output of the voltage-controlled local oscillator 17 has the minimum component, the extracted carrier frequency deviation component to be monitored is further reduced to near zero. A frequency deviation coarse control / fine adjustment unit 22 for finely adjusting the control voltage so as to converge, a frequency deviation 22 for receiving an output signal of the low carrier mode IF mixer 10 and extracting a carrier frequency deviation component between transmission and reception in the low carrier mode. It is an extraction unit.

The operation of the receiving apparatus configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and its output is mixed with the output of the voltage-controlled local oscillator 17 by the high carrier mode mixer 5. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 has been input samples the frequency of the high carrier mode signal, that is, の of the carrier frequency, as a sampling frequency, and outputs a signal appearing in a low band around the sampling frequency. Extract aliasing components. This folded component is a baseband signal from which the carrier has been removed. From this, the high carrier mode demodulation unit 12 demodulates the high carrier mode transmission signal, and outputs the result as a high carrier mode demodulation signal a.

The low carrier mode signal received by the low carrier mode antenna 15 is amplified by the low carrier mode RF section 4, and its output is mixed with the output of the voltage-controlled local oscillator 17 by the low carrier mode mixer 6. You. Further, this output is amplified by the low carrier mode IF unit 9, and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode I
The low carrier mode demodulation unit 13 that has received the baseband signal output from the F mixer 10 demodulates the low carrier mode transmission signal, and outputs the result as a low carrier mode demodulation signal b. On the other hand, the low carrier mode IF mixer 1
From the output of 0, the frequency deviation extraction unit 22 extracts the frequency deviation between transmission and reception in the low carrier mode, and based on this, the frequency deviation coarse control / fine adjustment unit 21 causes the voltage control type station to converge to zero. The oscillator 17 is controlled.

In this case, the above control is performed in two stages.
That is, in the first stage, the voltage-controlled local oscillator 1
7 is scanned in several steps, and after one round of scanning, the frequency of the frequency deviation component is reset to the output frequency of the local oscillator 17 having the minimum frequency component. The output frequency of the voltage-controlled local oscillator 17 is finely adjusted so as to converge to the vicinity.

As described above, according to the present embodiment, the voltage controlled type local oscillator 17 is shared between the high carrier mode and the low carrier mode, and the IF local oscillator 11 in the high carrier mode becomes unnecessary. Therefore, it is possible to reduce the size, weight, cost, and power consumption, and to speed up the control of the local oscillation frequency by coarse control and fine adjustment in the frequency deviation coarse control / fine adjustment unit 21. Can be.

(Embodiment 5) FIG.5 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 5 of the present invention.

In FIG. 5, the low carrier mode receiving unit 2
High carrier mode RF section 3, high carrier mode mixer 5, high carrier mode antenna 14, low carrier mode antenna 1
5, low carrier mode RF section 4, low carrier mode mixer 6, local oscillator 7, low carrier mode IF section 9, low carrier mode IF mixer 10, IF local oscillator 11, and low carrier mode demodulator 13 are shown in FIG. Since they are the same, the same reference numerals are given and the description is omitted. 1A is a high carrier mode receiver, and 23 is (１ ／ + α) (α) of the frequency of the high carrier mode signal with respect to the output signal from the high carrier mode mixer 5.
> 0), and a down-sampling unit 24 for extracting a folded component of a signal appearing in a low frequency band around the sampling frequency. The down-sampling unit 24 converts the output signal of the down-sampling unit 23 into a baseband signal at a local oscillation frequency α. A quadrature demodulator for down-converting the baseband signal from the quadrature demodulator to a quadrature component and an in-phase component on a phase plane composed of the quadrature component and the in-phase component to output a high carrier mode demodulated signal a; It is a demodulation unit.

The operation of the receiving apparatus configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and the output thereof is mixed with the output of the voltage-controlled local oscillator 17 by the high carrier mode mixer 5. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 is input is (、 + α) of the frequency of the high carrier mode signal, that is, the carrier frequency of the high carrier mode (α> 0).
Is sampled using the frequency of
The aliasing component of the signal appearing in the low band around the sampling frequency is extracted. Then, the output is output to the quadrature demodulation unit 2
At 4, the down-conversion is performed at the local oscillation frequency α into the quadrature component and the in-phase component of the baseband, and the subsequent phase demodulation unit 25 demodulates the high carrier mode transmission signal from the phase plane composed of the quadrature component and the in-phase component. Is output as a high carrier mode demodulation signal a.

The low carrier mode signal received by the low carrier mode antenna 15 is amplified by the low carrier mode RF section 4, and its output is mixed with the output of the local oscillator 7 by the low carrier mode mixer 6. In addition, this output
The output is amplified by the low carrier mode IF section 9 and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode IF mixer 1
The low carrier mode demodulation unit 13 that has received the baseband signal output from 0 demodulates the low carrier mode transmission signal and outputs the result as a low carrier mode demodulation signal b.

As described above, according to the present embodiment, local oscillator 7 is shared between high carrier mode and low carrier mode, and IF local oscillator 11 in high carrier mode.
, The size, weight, cost, and power consumption can be reduced, and the quadrature demodulation unit 24 and the phase demodulation unit 25 realize accurate demodulation of the high carrier mode signal. be able to.

(Embodiment 6) FIG. 6 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 6 of the present invention.

In FIG. 6, the low carrier mode receiving unit 2
High carrier mode RF section 3, high carrier mode antenna 1
4, low carrier mode antenna 15, low carrier mode RF
Unit 4, low carrier mode mixer 6, local oscillator 7, low carrier mode IF unit 9, low carrier mode IF mixer 10, I
The F local oscillator 11, the low carrier mode demodulation unit 13, and the phase demodulation unit 25 are the same as those in FIG.
Description is omitted. 1B is a high carrier mode receiver, 26 is a quadrature demodulator for down-converting the output signal from the high carrier mode RF unit 3 into a quadrature component and an in-phase component of IF.
A down-sampling 7 samples the output signal of the quadrature demodulation unit 26 at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal appearing in a low band around the sampling frequency. And 28, a phase demodulation unit for demodulating the output signal of the downsampling unit 27 and outputting a high carrier mode demodulation signal a.

The operation of the receiving apparatus configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and its output is output by the local oscillator 7 to the quadrature demodulation section 2.
At 6, the RF is down-converted to an in-phase component and an in-phase component of the IF, and then the down-sampling unit 27 converts the output of each component into a half of the carrier frequency (frequency of the high carrier mode signal). Sampling is performed as a sampling frequency, and a folded component of a signal appearing in a low band around the sampling frequency is extracted. Then, in the subsequent phase demodulation unit 25, the high carrier mode transmission signal is demodulated from the phase plane composed of the extracted baseband quadrature component and in-phase component, and the result is output as a high carrier mode demodulation signal a.

The low carrier wave mode signal received by the low carrier wave mode antenna 15 is amplified by the low carrier wave mode RF section 4, and its output is mixed with the output of the local oscillator 7 by the low carrier wave mode mixer 6. In addition, this output
The output is amplified by the low carrier mode IF section 9 and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode IF mixer 1
The low carrier mode demodulation unit 13 that has received the baseband signal output from 0 demodulates the low carrier mode transmission signal and outputs the result as a low carrier mode demodulation signal b.

As described above, according to the present embodiment, the local oscillator 7 is shared between the high carrier mode and the low carrier mode, and the mixer and the IF local oscillator 11 in the high carrier mode are unnecessary. Further, size, weight, cost and power consumption can be further reduced.

(Embodiment 7) FIG. 7 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 7 of the present invention.

In FIG. 7, the low carrier mode receiving unit 2
High carrier mode RF section 3, high carrier mode mixer 5, downsampling section 8, high carrier mode demodulation section 12, high carrier mode antenna 14, low carrier mode antenna 1
5, low carrier mode RF section 4, low carrier mode mixer 6, local oscillator 7, low carrier mode IF section 9, low carrier mode IF mixer 10, IF local oscillator 11, and low carrier mode demodulator 13 are shown in FIG. Since they are the same, the same reference numerals are given and the description is omitted. 1C is a high carrier mode receiving unit, 29 is a frequency deviation extracting unit which receives the output signal of the down sampling unit 8 and extracts a carrier frequency deviation component between transmission and reception in the high carrier mode, and 30 is extracted by the frequency deviation extracting unit 29. A downsampling frequency control unit that controls the sampling frequency of the downsampling unit 8 in a direction to reduce the carrier frequency deviation component.

The operation of the receiving apparatus configured as described above will be described.

The high carrier mode signal received by the high carrier mode antenna 14 is amplified by the high carrier mode RF section 3, and its output is mixed with the output of the local oscillator 7 by the high carrier mode mixer 5. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 is input samples the frequency of the high carrier mode signal, that is, half the carrier frequency of the high carrier mode, as the sampling frequency, and the low frequency band around the sampling frequency. Is extracted. This aliasing component is a baseband signal with the carrier removed.
Thus, the high carrier mode demodulation section 12 demodulates the high carrier mode transmission signal, and outputs the result as a high carrier mode demodulation signal a.

The low carrier mode signal received by the low carrier mode antenna 15 is amplified by the low carrier mode RF unit 4, and the output is mixed with the output of the local oscillator 7 by the low carrier mode mixer 6. In addition, this output
The output is amplified by the low carrier mode IF section 9 and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode IF mixer 1
The low carrier mode demodulation unit 13 that has received the baseband signal output from 0 demodulates the low carrier mode transmission signal and outputs the result as a low carrier mode demodulation signal b. On the other hand, from the output of the downsampling unit 8, the frequency deviation extracting unit 29 extracts the frequency deviation between transmission and reception in the high carrier mode, and the downsampling frequency control unit 30 directs the extracted frequency deviation to converge to zero. To control the sampling frequency of the downsampling unit 8.

As described above, according to the present embodiment, local oscillator 7 is shared between the high carrier mode and the low carrier mode, and IF local oscillator 11 in the high carrier mode.
Therefore, downsizing, weight reduction, low cost, and low power consumption can be achieved, and the demodulation in the high carrier mode can be further accurately performed by controlling the sampling frequency of the downsampling frequency control unit 30. it can.

(Embodiment 8) FIG. 8 is a block diagram showing a receiving device of a dual mode wireless terminal apparatus according to Embodiment 8 of the present invention.

In FIG. 8, the low carrier mode receiving unit 2
A high carrier mode RF section 3, a high carrier mode mixer 5, a down sampling section 8, a high carrier mode antenna 14,
Low carrier mode antenna 15, low carrier mode RF unit 4, low carrier mode mixer 6, local oscillator 7, low carrier mode IF unit 9, low carrier mode IF mixer 10, IF
The local oscillator 11 and the low carrier mode demodulator 13 are the same as those in FIG. 1
D is a high carrier mode receiver, and 28 demodulates an output signal of the downsampling unit 8 in a phase plane composed of a baseband quadrature component and an in-phase component of the output signal of the downsampling unit 8 to output a high carrier mode demodulated signal. The phase modulation unit 31 converts the output signal of the downsampling unit 8 into π /
Π / which generates a baseband orthogonal component by two-phase shift
It is a two-phase shifter.

The operation of the receiving apparatus configured as described above will be described.

The high carrier wave mode signal received by the high carrier wave mode antenna 14 is amplified by the high carrier wave mode RF section 3, and its output is mixed with the output of the local oscillator 7 by the high carrier wave mode mixer 5. The down-sampling unit 8 to which the output signal of the high carrier mode mixer 5 is input samples the frequency of the high carrier mode signal, that is, half the carrier frequency of the high carrier mode, as the sampling frequency, and the low frequency band around the sampling frequency. Is extracted. Then, the output phase of the down-sampling unit 8 is set to π /
The two-shifted quadrature component and the non-shifted in-phase component are extracted, and the phase demodulator 28 demodulates the high carrier mode transmission signal in the phase plane composed of the quadrature component and the in-phase component. Output as

The low carrier mode signal received by the low carrier mode antenna 15 is amplified by the low carrier mode RF section 4, and its output is mixed with the output of the local oscillator 7 by the low carrier mode mixer 6. In addition, this output
The output is amplified by the low carrier mode IF section 9 and the output is mixed with the output of the low carrier mode IF local oscillator 11 by the low carrier mode IF mixer 10 and down-converted to a baseband. Low carrier mode IF mixer 1
The low carrier mode demodulation unit 13 that has received the baseband signal output from 0 demodulates the low carrier mode transmission signal and outputs the result as a low carrier mode demodulation signal b.

As described above, according to the present embodiment, local oscillator 7 is shared between the high carrier mode and the low carrier mode, and IF local oscillator 11 in the high carrier mode.
Is not required, so that the size, weight, cost, and power consumption can be reduced, and the π / 2 phase shifter 31 can be used.
The demodulation in the high carrier mode can be further accurately performed by the phase demodulation unit 28.

[0080]

As described above, according to the receiver of the dual mode wireless terminal device according to the first aspect of the present invention, the higher of the carrier frequency of the dual modes for supporting the two systems. A dual mode wireless terminal device having a high carrier mode receiving unit for processing a high carrier mode signal, and a low carrier mode receiving unit for processing a low carrier mode signal having a lower carrier frequency of the dual mode. In the device, the high carrier mode receiving unit, the high carrier mode RF unit that amplifies the high carrier mode signal received by the high carrier mode antenna, and the frequency of the high carrier mode signal output from the high carrier mode RF unit And a half of the frequency of the high carrier mode signal with respect to the output signal from the high carrier mode mixer. Sampling at the sampling frequency, which is the frequency of the signal, and a down-sampling unit that extracts the aliasing component of the signal appearing in the low frequency band around the sampling frequency, and demodulates the output signal of the down-sampling unit and outputs a high carrier mode demodulated signal. A low carrier mode demodulating section, and the low carrier mode receiving section includes a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode RF section output from the low carrier mode RF section. A low carrier mode mixer for lowering the frequency of the carrier mode signal, a local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer, and a low carrier for amplifying an output signal from the low carrier mode mixer The mode IF section and the low carrier mode for lowering the frequency of the output signal from the low carrier wave mode IF section. Wave mode IF mixer, IF local oscillator for outputting an IF local signal to low carrier mode IF mixer, and low carrier mode demodulator for demodulating the output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal By having, the local oscillator is shared between the high carrier mode and the low carrier mode,
In addition, since the IF local oscillator in the high carrier mode is not required, the advantageous effects of reducing size, weight, cost, and power consumption can be obtained.

According to the receiver of the dual mode wireless terminal device of the present invention, a high carrier wave for processing a signal of a higher carrier wave mode having a higher carrier frequency among the dual modes for supporting two systems. A mode receiver, a low carrier mode receiver for processing a signal of a lower carrier mode of a lower carrier frequency of the dual mode, a receiving device of a dual mode wireless terminal device having a high carrier mode receiver A high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, a high carrier mode mixer for reducing the frequency of the high carrier mode signal output from the high carrier mode RF section, Sampling that is half the frequency of the high carrier mode signal for the output signal from the carrier mode mixer A downsampling unit that samples at the wave number and extracts the aliasing component of the signal that appears in the low frequency band around the sampling frequency, and a high carrier mode demodulation that demodulates the output signal of the downsampling unit and outputs a high carrier mode demodulation signal. Having a low carrier mode receiving unit, the low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna,
A low-carrier mode mixer for lowering the frequency of the low-carrier mode signal output from the low-carrier mode RF unit, a voltage-controlled local oscillator that outputs a local signal to the high-carrier mode mixer and the low-carrier mode mixer, A low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and an IF local signal to the low carrier mode IF mixer. , A low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer and outputs a low carrier mode demodulated signal, and a low carrier wave that receives the output signal of the low carrier mode IF mixer. A voltage-controlled local oscillator that extracts carrier frequency deviation components between transmission and reception in the mode and reduces the carrier frequency deviation components By having a frequency deviation extraction unit for voltage control, the local oscillator is shared between the high carrier mode and the low carrier mode, and the IF local oscillator in the high carrier mode is not required, so that the size and weight are reduced. ,
Advantageously, the cost and power consumption can be reduced, and the oscillation frequency of the voltage-controlled local oscillator can be stabilized by the frequency deviation extracting unit.

According to the receiver of the third aspect of the present invention, a high carrier wave mode for processing a signal of a higher carrier wave mode having a higher carrier frequency among dual modes for supporting two systems. A receiving unit,
A low-carrier mode receiving unit for processing a signal of a lower carrier mode having a lower carrier frequency of the dual mode, and a receiving device for a dual-mode wireless terminal device having a high-carrier mode receiving unit. A high carrier mode RF section for amplifying the high carrier mode signal received by the antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and a high carrier mode mixer A down-sampling unit that samples the output signal at a sampling frequency that is half the frequency of the high carrier mode signal, and extracts a folded component of a signal that appears in a low band around the sampling frequency; High carrier mode to demodulate the output signal and output the high carrier mode demodulated signal. A low carrier mode receiving section, a low carrier mode receiving section, a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF section. A low carrier mode mixer for lowering the frequency, a local oscillator for outputting a local signal, and a divided signal obtained by dividing the local signal from the local oscillator to a high carrier mode mixer and a low carrier mode mixer Frequency divider, a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and a low carrier mode IF An IF local oscillator that outputs an IF local oscillator signal to a mixer, and a low carrier that demodulates an output signal of a low carrier mode IF mixer and outputs a low carrier mode demodulated signal. Inputs the output signal of the mode demodulator and low carrier mode IF mixer, extracts the carrier frequency deviation component between transmission and reception in the low carrier mode, and controls the frequency divider ratio in the direction to reduce the carrier frequency deviation component The local oscillator is shared between the high carrier mode and the low carrier mode, and the IF local oscillator in the high carrier mode is not required. It is possible to obtain an advantageous effect that cost can be reduced and power consumption can be reduced, and the control of the local oscillation frequency can be easily performed in the frequency deviation extracting unit.

According to the fourth aspect of the present invention, a high carrier wave for processing a signal of a high carrier wave mode having a higher carrier frequency among dual modes for supporting two systems. A mode receiver, a low carrier mode receiver for processing a signal of a lower carrier mode of the lower carrier frequency of the dual mode, a receiver of a dual mode wireless terminal device having a high carrier mode receiver A high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, Sampling that is half the frequency of the high carrier mode signal for the output signal from the carrier mode mixer A downsampling unit that samples at the wave number and extracts the aliasing component of the signal that appears in the low frequency band around the sampling frequency, and a high carrier mode demodulation that demodulates the output signal of the downsampling unit and outputs a high carrier mode demodulation signal. Having a low carrier mode receiving unit, the low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna,
A low-carrier mode mixer for lowering the frequency of the low-carrier mode signal output from the low-carrier mode RF unit, a voltage-controlled local oscillator that outputs a local signal to the high-carrier mode mixer and the low-carrier mode mixer, A low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and an IF local signal to the low carrier mode IF mixer. , A low carrier mode demodulator for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal, and a low carrier wave for inputting the output signal of the low carrier mode IF mixer. A frequency deviation extracting unit for extracting a carrier frequency deviation component between transmission and reception in a mode, and a monitor for extracting the extracted carrier frequency deviation component. The output of the voltage-controlled local oscillator is scanned in several steps, and after one round of scanning, the voltage is controlled so that the output of the voltage-controlled local oscillator whose monitored carrier frequency deviation component to be monitored is the minimum is obtained. A frequency deviation coarse control / fine adjustment unit for finely adjusting the control voltage so that the extracted carrier frequency deviation component to be monitored further converges to near zero after resetting the control voltage applied to the type local oscillator; As a result, the local oscillator is shared between the high carrier mode and the low carrier mode, and the need for an IF local oscillator in the high carrier mode is eliminated.
Advantageously, weight reduction, cost reduction, and power consumption reduction can be achieved, and the control of the local oscillation frequency can be speeded up by the frequency deviation coarse control / fine adjustment unit.

According to the receiving apparatus for a dual mode wireless terminal device of the fifth aspect, a high carrier wave for processing a signal of a high carrier wave mode having a higher carrier frequency among dual modes for supporting two systems. A mode receiver, a low carrier mode receiver for processing a signal of a lower carrier mode of the lower carrier frequency of the dual mode, a receiver of a dual mode wireless terminal device having a high carrier mode receiver A high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, (1/2 + α) of the frequency of the high carrier mode signal with respect to the output signal from the carrier mode mixer
A downsampling unit that performs sampling at a sampling frequency of (α> 0) and extracts a folded component of a signal that appears in a low frequency band around the sampling frequency; and outputs an output signal of the downsampling unit to a baseband signal at a local oscillation frequency α. A quadrature demodulator for down-converting the quadrature component and the in-phase component into a quadrature demodulator; The carrier mode receiving unit is a low carrier mode RF unit for amplifying the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit. A mixer, a local oscillator that outputs a local signal to the high carrier mode mixer and the low carrier mode mixer, A low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and an I / F for the low carrier mode IF mixer.
By having an IF local oscillator that outputs an F local oscillator signal and a low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer and outputs a low carrier mode demodulated signal, the local oscillator can output a high carrier wave. Mode and low-carrier mode, and eliminates the need for an IF local oscillator in the high-carrier mode, reducing the size, weight, and cost.
The advantageous effect that the power consumption can be reduced and the high carrier mode signal can be accurately demodulated by the quadrature demodulation unit and the phase demodulation unit is obtained.

According to the receiver of the dual mode wireless terminal device of the sixth aspect, a high carrier wave for processing a signal of a higher carrier wave mode having a higher carrier frequency among the dual modes for supporting two systems. A mode receiver, a low carrier mode receiver for processing a signal of a lower carrier mode of the lower carrier frequency of the dual mode, a receiver of a dual mode wireless terminal device having a high carrier mode receiver A high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, a quadrature demodulation section for down-converting an output signal from the high carrier mode RF section into a quadrature component and an in-phase component of IF. , The output signal of the quadrature demodulator is sampled at a sampling frequency that is half the frequency of the high carrier mode signal. A down-sampling unit for extracting the aliasing component of a signal appearing in a low frequency band around the sampling frequency, and a phase demodulation unit for demodulating an output signal of the down-sampling unit and outputting a high carrier mode demodulated signal. Then, the low carrier mode receiving section is a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and for lowering the frequency of the low carrier mode signal output from the low carrier mode RF section. A low carrier mode mixer, a local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer, a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, and a low carrier mode IF A low carrier mode IF mixer for lowering the frequency of the output signal from the By having an IF local oscillator that outputs a local oscillator signal and a low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer and outputs a low carrier mode demodulated signal, the local oscillator can operate in a high carrier mode. And low carrier mode, and high carrier mode mixer and IF in high carrier mode.
Since a local oscillator is not required, the size, weight, cost and power consumption can be further reduced.
The quadrature demodulation unit and the phase demodulation unit have an advantageous effect that the high carrier mode signal can be accurately demodulated.

According to the receiving apparatus for a dual mode wireless terminal device of the present invention, a high carrier wave for processing a signal of a high carrier wave mode having a higher carrier frequency among dual modes for supporting two systems. A mode receiver, a low carrier mode receiver for processing a signal of a lower carrier mode of the lower carrier frequency of the dual mode, a receiver of a dual mode wireless terminal device having a high carrier mode receiver A high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, Sampling that is half the frequency of the high carrier mode signal for the output signal from the carrier mode mixer A downsampling unit that samples at the wave number and extracts the aliasing component of the signal that appears in the low frequency band around the sampling frequency, and a high carrier mode demodulation that demodulates the output signal of the downsampling unit and outputs a high carrier mode demodulation signal Unit, a frequency deviation extracting unit for inputting an output signal of the downsampling unit and extracting a carrier frequency deviation component between transmission and reception in the high carrier mode, and sampling of the downsampling unit in a direction to reduce the extracted carrier frequency deviation component. A low-sampling frequency control unit that controls the frequency, a low-carrier mode receiving unit, a low-carrier mode RF unit that amplifies the low-carrier mode signal received by the low-carrier mode antenna, and an output from the low-carrier mode RF unit. Low carrier mode to reduce the frequency of the signal A mode mixer, a local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer, a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, and a low carrier mode IF section Low IF mode mixer for lowering the frequency of the output signal from the IF, an IF local oscillator for outputting an IF local oscillator to the low carrier mode IF mixer, and a low carrier frequency by demodulating the output signal of the low carrier mode IF mixer By having a low carrier mode demodulation unit that outputs a mode demodulation signal, the local oscillator is shared between the high carrier mode and the low carrier mode, and the need for an IF local oscillator in the high carrier mode is eliminated. Miniaturization,
Advantageously, weight reduction, cost reduction, and power consumption reduction can be achieved, and the downsampling frequency control section can more accurately demodulate the high carrier mode signal.

According to the receiving apparatus of the dual mode wireless terminal device of the eighth aspect, a high carrier wave for processing a signal of a high carrier mode having a higher carrier frequency among dual modes for supporting two systems. A mode receiver, a low carrier mode receiver for processing a signal of a lower carrier mode of the lower carrier frequency of the dual mode, a receiver of a dual mode wireless terminal device having a high carrier mode receiver A high carrier mode RF section for amplifying the high carrier mode signal received by the high carrier mode antenna, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, Sampling that is half the frequency of the high carrier mode signal for the output signal from the carrier mode mixer A downsampling unit that performs sampling at a wave number and extracts a folded component of a signal appearing in a low frequency band around a sampling frequency, and a π that generates a baseband orthogonal component by shifting an output signal of the downsampling unit by π / 2 phase. / 2 phase shifter, and a phase demodulation unit that demodulates the output signal of the downsampling unit and outputs a high carrier mode demodulation signal on a phase plane including a baseband quadrature component and an in-phase component of the output signal of the downsampling unit. Then, the low carrier mode receiving section is a low carrier mode RF section for amplifying the low carrier mode signal received by the low carrier mode antenna, and for lowering the frequency of the low carrier mode signal output from the low carrier mode RF section. Output local signal to low carrier mode mixer, high carrier mode mixer and low carrier mode mixer And the local oscillator oscillator,
A low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and an IF local signal to the low carrier mode IF mixer. And a low carrier mode demodulator for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal, so that the local oscillator can operate in a high carrier mode and a low carrier mode. Mode, and eliminates the need for an IF local oscillator in the high carrier mode, so that the size, weight, cost, and power consumption can be further reduced, and the π / 2 phase shifter can be used. An advantageous effect is obtained that the high carrier mode signal can be demodulated more accurately.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a sixth embodiment of the present invention.

FIG. 7 is a block diagram showing a receiving device of a dual mode wireless terminal device according to a seventh embodiment of the present invention.

FIG. 8 is a block diagram showing a receiving device of a dual mode wireless terminal device according to an eighth embodiment of the present invention.

FIG. 9 is a block diagram showing a receiving device of a conventional dual mode wireless terminal device.

[Description of Signs] 1, 1A, 1B, 1C, 1D High carrier mode receiver 2, 2A, 2B, 2C Low carrier mode receiver 3 High carrier mode RF section 4 Low carrier mode RF section 5 High carrier mode mixer 6 Low Carrier mode mixer 7 Local oscillator 8, 23, 27 Downsampling unit 9 Low carrier mode IF unit 10 Low carrier mode IF mixer 11 IF local oscillator 12 High carrier mode demodulator 13 Low carrier mode demodulator 14 High carrier mode antenna 15 Low carrier mode antenna 16, 18 Frequency deviation unit 17, 19 Voltage controlled local oscillator 20 Frequency divider 21 Frequency deviation coarse control / fine adjustment unit 22, 29 Frequency deviation extraction unit 24, 26 Quadrature demodulation unit 25, 28 Phase demodulation Unit 30 downsampling frequency control unit 31 π / 2 phase shifter

Claims (8)

[Claims] 1. A high carrier mode receiving unit for processing a high carrier mode signal having a higher carrier frequency of dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. The sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling is performed. A down-sampling unit that extracts a folded component of a signal appearing in a low frequency band around a sampling frequency; The low carrier mode receiving unit, a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF unit to reduce the frequency of the low carrier mode signal A low-carrier mode mixer, a local oscillator that outputs a local signal to the high-carrier mode mixer and the low-carrier mode mixer, and a low-carrier mode IF unit that amplifies an output signal from the low-carrier mode mixer, A low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF section; An IF local oscillator for outputting an IF local oscillator signal to a mixed IF mixer, and a low carrier mode demodulator for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal. Receiving device of a dual mode wireless terminal device. 2. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. The sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling is performed. A down-sampling unit that extracts a folded component of a signal appearing in a low frequency band around a sampling frequency, and a high-carrier mode demodulation unit that demodulates an output signal of the down-sampling unit and outputs a high-carrier mode demodulation signal. The low carrier mode receiving unit, a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF unit to reduce the frequency of the low carrier mode signal A low-carrier mode mixer, a voltage-controlled local oscillator that outputs a local signal to the high-carrier mode mixer and the low-carrier mode mixer, and a low-carrier mode IF that amplifies an output signal from the low-carrier mode mixer A low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF section; An IF local oscillator that outputs an IF local oscillator signal to a low carrier mode IF mixer; a low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer to output a low carrier mode demodulated signal; A frequency deviation extraction unit that receives an output signal of a mode IF mixer, extracts a carrier frequency deviation component between transmission and reception in a low carrier mode, and voltage-controls the voltage-controlled local oscillator in a direction to reduce the carrier frequency deviation component. And a receiving device for a dual mode wireless terminal device. 3. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. The sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling is performed. A down-sampling unit that extracts a folded component of a signal appearing in a low frequency band around a sampling frequency; The low carrier mode receiving unit, a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF unit to reduce the frequency of the low carrier mode signal , A local oscillator that outputs a local signal, and a frequency-divided signal obtained by dividing the local signal from the local oscillator to the high carrier mode mixer and the low carrier mode mixer. A frequency divider; a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer; and an output signal from the low carrier mode IF section. Low carrier mode IF mixer for lowering the frequency of the signal, and said low carrier mode IF mixer
An IF local oscillator that outputs an IF local signal to a mixer; a low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer and outputs a low carrier mode demodulated signal; A frequency deviation extracting unit that receives an output signal, extracts a carrier frequency deviation component between transmission and reception in the low carrier mode, and controls a frequency division ratio of the frequency divider in a direction to reduce the carrier frequency deviation component. A receiving device for a dual mode wireless terminal device. 4. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. The sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling is performed. A down-sampling unit that extracts a folded component of a signal appearing in a low frequency band around a sampling frequency, and a high-carrier mode demodulation unit that demodulates an output signal of the down-sampling unit and outputs a high-carrier mode demodulation signal. The low carrier mode receiving unit, a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF unit to reduce the frequency of the low carrier mode signal A low-carrier mode mixer, a voltage-controlled local oscillator that outputs a local signal to the high-carrier mode mixer and the low-carrier mode mixer, and a low-carrier mode IF that amplifies an output signal from the low-carrier mode mixer A low carrier mode IF mixer for lowering the frequency of an output signal from the low carrier mode IF section; An IF local oscillator that outputs an IF local signal to a low carrier mode IF mixer; a low carrier mode demodulator that demodulates an output signal of the low carrier mode IF mixer and outputs a low carrier mode demodulated signal; A frequency deviation extracting unit that receives an output signal of a mode IF mixer and extracts a carrier frequency deviation component between transmission and reception in a low carrier mode, and monitors the extracted carrier frequency deviation component while monitoring the extracted carrier frequency deviation component. The output is scanned in several steps, and after one round of the scan, the voltage-controlled local oscillator is output so that the extracted carrier-wave frequency deviation component to be monitored becomes the output of the voltage-controlled local oscillator having the minimum component. After resetting the control voltage to be applied, the control voltage is controlled so that the extracted carrier frequency deviation component to be monitored further converges to near zero. Receiver of the dual mode wireless terminal apparatus characterized by having a frequency deviation coarse control / fine adjustment unit for finely adjusting the. 5. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. (1/1) of the frequency of the carrier mode signal
2 + α) (α>0); a down-sampling unit that samples at a sampling frequency and extracts a folded component of a signal appearing in a low frequency band around the sampling frequency; and outputs a local oscillation frequency α from the down-sampling unit. A quadrature demodulator for down-converting the baseband signal into a quadrature component and an in-phase component, and a phase demodulator for demodulating the baseband signal on a phase plane composed of the quadrature component and the in-phase component to output a high carrier mode demodulation signal Having a low carrier mode receiving section, a low carrier mode RF section that amplifies a low carrier mode signal received by a low carrier mode antenna, and a low carrier mode signal output from the low carrier mode RF section. A low carrier mode mixer for lowering the frequency, the high carrier mode mixer and the low carrier mode mixer. A local oscillator for outputting a local signal to the mixer, a low carrier mode IF section for amplifying the output signal from the low carrier mode mixer, and a low frequency section for lowering the frequency of the output signal from the low carrier mode IF section. A carrier mode IF mixer, an IF local oscillator for outputting an IF local signal to the low carrier mode IF mixer, and a low carrier mode for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal A receiver for a dual mode wireless terminal device, comprising: a demodulation unit. 6. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier wave mode RF section for amplifying the signal, an orthogonal demodulation section for down-converting an output signal from the high carrier wave mode RF section into a quadrature component and an in-phase component of IF, and Sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling frequency is centered on the sampling frequency. A down-sampling unit for extracting a folded component of a signal appearing in a low band, and a phase demodulation unit for demodulating an output signal of the down-sampling unit and outputting a high-carrier mode demodulated signal; The unit is a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and a low carrier mode mixer for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit. A local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer, a low carrier mode IF unit for amplifying an output signal from the low carrier mode mixer, and the low carrier mode IF unit Low frequency mode IF mixer for lowering the frequency of the output signal from the A dual mode wireless terminal device, comprising: an IF local oscillator for outputting a signal; and a low carrier mode demodulator for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal. Receiver. 7. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. The sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling is performed. A down-sampling unit that extracts a folded component of a signal that appears in a low frequency band around a center frequency, a high-carrier mode demodulation unit that demodulates an output signal of the down-sampling unit and outputs a high-carrier mode demodulation signal, A frequency deviation extraction unit that inputs an output signal of the sampling unit and extracts a carrier frequency deviation component between transmission and reception in the high carrier mode, and a sampling frequency of the downsampling unit in a direction to reduce the extracted carrier frequency deviation component. And a down-sampling frequency control unit for controlling, the low carrier mode receiving unit, a low carrier mode RF unit for amplifying a low carrier mode signal received by a low carrier mode antenna, and an output from the low carrier mode RF unit. Low-carrier mode mixer for reducing the frequency of the low-carrier mode signal A local oscillator for outputting a local signal to the high carrier mode mixer and the low carrier mode mixer; a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer; and the low carrier mode IF A low carrier mode IF mixer for lowering the frequency of the output signal from the section, an IF local oscillator for outputting an IF local signal to the low carrier mode IF mixer, and demodulating an output signal of the low carrier mode IF mixer. And a low-carrier mode demodulation section for outputting a low-carrier mode demodulation signal. 8. A high carrier mode receiver for processing a high carrier mode signal having a higher carrier frequency of the dual modes for supporting two systems, and a lower carrier frequency of the dual mode. A low-carrier mode receiving unit that processes a low-carrier mode signal of the dual-mode wireless terminal device, wherein the high-carrier-mode receiving unit receives a high-carrier-mode signal received by a high-carrier-mode antenna. A high carrier mode RF section for amplifying the signal, a high carrier mode mixer for lowering the frequency of the high carrier mode signal output from the high carrier mode RF section, and the high carrier mode mixer for the output signal from the high carrier mode mixer. The sampling is performed at a sampling frequency that is half the frequency of the carrier mode signal, and the sampling is performed. A down-sampling unit for extracting a folded component of a signal appearing in a low frequency band around a center frequency, a π / 2 phase shifter for generating a baseband orthogonal component by shifting an output signal of the down-sampling unit by π / 2 phase. A phase demodulation unit that demodulates the output signal of the downsampling unit and outputs a high carrier mode demodulation signal on a phase plane including the baseband quadrature component and the in-phase component of the output signal of the downsampling unit, The low carrier mode receiving unit, a low carrier mode RF unit that amplifies the low carrier mode signal received by the low carrier mode antenna, and for lowering the frequency of the low carrier mode signal output from the low carrier mode RF unit A low-carrier mode mixer, and a station that outputs a local signal to the high-carrier mode mixer and the low-carrier mode mixer An oscillator, a low carrier mode IF section for amplifying an output signal from the low carrier mode mixer, a low carrier mode IF mixer for lowering the frequency of the output signal from the low carrier mode IF section, and the low carrier mode IF A dual oscillator comprising: an IF local oscillator for outputting an IF local signal to a mixer; and a low carrier mode demodulator for demodulating an output signal of the low carrier mode IF mixer and outputting a low carrier mode demodulated signal. Mode The receiving device of the wireless terminal device.