CN113922828B - Receiving device, radio frequency system and communication equipment - Google Patents

Abstract

An embodiment of the present application provides a receiving device, a radio frequency system, and a communication device; wherein, the receiving device includes: a filtering component, a receiving amplification component; the filtering component includes: an input port for receiving a received signal from an antenna; a filter for The receiving signal is filtered to obtain the receiving signal of the predetermined frequency band; the output port is used to send the receiving signal of the predetermined frequency band to the receiving amplification component; the receiving amplification component is used to amplify the power of the receiving signal of the predetermined frequency band and then output it. The embodiment of the present application can save the space of the main board and reduce the cost.

Description

A receiving device, radio frequency system and communication equipment

technical field

This article relates to the field of radio frequency technology, in particular to a receiving device, a radio frequency system and communication equipment.

Background technique

With the development of communication networks, it is necessary to support various communication network standards, but limited by the size constraints of terminal equipment, the PCB (Printed Circuit Board, printed circuit board) space of the main board will not be as large as the communication network The increase of the standard increases accordingly, which will lead to a very tight space layout and wiring of the motherboard PCB.

Contents of the invention

The following is an overview of the subject matter described in detail in this application. This summary is not intended to limit the scope of the claims.

Embodiments of the present application provide a receiving device, a radio frequency system, and communication equipment, which can save space on a motherboard and reduce costs.

On the one hand, an embodiment of the present application provides a receiving device, including: a filtering component, a receiving amplifying component; the filtering component includes: an input port, used to receive a received signal from an antenna; a filter, used to process the received received signal filtering to obtain the received signal of the predetermined frequency band; the output port is used to send the received signal of the predetermined frequency band to the receiving amplifying component; the receiving amplifying component is used to amplify the power of the receiving signal of the predetermined frequency band and then output it.

On the other hand, an embodiment of the present application provides a radio frequency system, including: an antenna, a transceiver, and the receiving device provided in the embodiment of the present application.

In another aspect, the embodiment of the present application provides a communication device, including the radio frequency system provided in the embodiment of the present application.

Compared with the related technology, in the embodiment of the present application, the receiving frame is optimized, and the filter is integrated into the filter component, so that the occupied motherboard area will not be increased due to the addition of the external filter, so the integration degree can be improved , reduce cost; if the receiving device is used to receive signals of other frequency bands at the same time, the signals of different frequency bands output by multiple filter components can be matched in one module, reducing the possibility of port mismatch and improving receiving performance.

Other aspects will be apparent to others upon reading and understanding the drawings and detailed description.

Description of drawings

The accompanying drawings are used to provide an understanding of the technical solution of the present application, and constitute a part of the description, and are used together with the embodiments of the present application to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

Figure 1a is a schematic diagram of a receiving device provided by an embodiment of the present application;

Fig. 1b is a schematic diagram of a radio frequency system provided by an embodiment of the present application;

Figure 2 is one of the schematic diagrams of the FEM in the exemplary embodiment;

Figure 3a is a schematic diagram of a radio frequency system in a first example;

Fig. 3b is a schematic diagram of the connection relationship of LB PA Mid in the first example;

Fig. 3c is a schematic diagram of the connection relationship of MHB PA Mid in the first example;

Figure 3d is a schematic diagram of the connection relationship of the main set receiving LNA BANK in the first example;

Figure 3e is a schematic diagram of the connection relationship of the FEM in the first example;

Figure 3f is a schematic diagram of the connection relationship of the diversity reception LNA BANK in the first example;

Fig. 4 is the second schematic diagram of FEM in the exemplary embodiment;

Fig. 5 is a schematic diagram of the connection relationship of FEM in the second example;

Fig. 6 is the third schematic diagram of FEM in the exemplary embodiment;

Fig. 7 is a schematic diagram of the connection relationship of FEM in the third example;

Figure 8 is a schematic diagram of LB PA Mid in an exemplary embodiment;

Fig. 9a is a schematic diagram of the connection relationship of LB PA Mid in the fourth example;

Fig. 9b is a schematic diagram of the connection relationship of FEM in the fourth example;

Fig. 10 is a schematic diagram of a radio frequency system in a fifth example.

Explanation of reference signs:

10: Transceiver 11: Antenna

12: Filter component 13: Receive amplifier component

121: Input port 122: Filter

1221: first filter 1222: second filter

123: Output port 21: LB PA Mid

22: MHB PA Mid 23: Main set receives LNA BANK

24: FEM 25: Diversity reception LNA BANK

31: First Antenna 32: Second Antenna

33: Third Antenna 34: Fourth Antenna

41: First Combiner 42: Second Combiner

43: Third Combiner 44: Fourth Combiner

50: N28 duplexer 61: First N28 filter

62: Second N28 filter 63: Third N28 filter

211: LB PA Mid with built-in N28 filter

241: One of the FEMs with built-in N28 filter

242: One of the FEMs with built-in N28 filter

243: FEM 3 with built-in N28 filter

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described below are only used to explain the present application, not to limit the present application.

It can be understood that in this application, the descriptions involving “first”, “second” and so on are only used for distinction in description, and cannot be understood as indicating or implying their relative importance or implicitly indicating the indicated technical features quantity. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

The receiving devices and radio frequency systems involved in the embodiments of the present application can be applied to communication devices with wireless communication functions; communication devices can include any one or more of the following: handheld devices, vehicle-mounted devices, wearable devices, computing devices, other processing Equipment, MS (Mobile Station, mobile station), various forms of UE (User Equipment, user equipment); the UE may be, for example, a mobile phone or a tablet computer.

The embodiment of the present application provides a receiving device, which is applied to the receiving path, as shown in Figure 1a, including:

Filtering component 12, receiving amplifying component 13;

Filter assembly 12 includes:

input port 121 for receiving received signals from the antenna;

The filter 122 is configured to filter the received received signal to obtain a received signal of a predetermined frequency band;

The output port 123 is used to send the received signal of the predetermined frequency band to the receiving amplifying component 13;

The receiving amplifying component 13 is used for amplifying the received signal in a predetermined frequency band before outputting it.

In the embodiment of the present application, the receiving frame is optimized, and the filter is integrated into the filter component 12, so that the occupied motherboard area will not be increased due to the addition of external filters, so the integration degree can be improved and the cost can be reduced; If the device is used to receive signals of other frequency bands at the same time, the signals of different frequency bands output by multiple filter components 12 can be matched in one module, reducing the possibility of port mismatch and improving the receiving performance.

In the embodiment of the present application, the filter component 12 can be understood to be arranged in a packaged chip, such as a FEM (Front-end Module, front-end module) chip, a PA Mid (Power Amplifier Modules including Duplexers, power amplifier module) chip and other devices In this case, the filter 122 is an on-chip filter. The filtering function of the filtering component 12 can be realized by building the filter 122 in the FEM chip and/or PA Mid and other chips. Wherein, the predetermined frequency band is related to the filter used. For example, if the filter is an N28 filter, N28 filtering is performed on the received signal to obtain a received signal in the N28 frequency band.

In the embodiment of the present application, the receiving and amplifying component 13 can be arranged in an LNA (Low Noise Amplifier, low noise amplifier) BANK (group) chip; the LNA BANK can be a receiving module integrating a low noise amplifier and a switch, wherein the low noise amplifier The input end of the release path is connected to the output port 123 of the filter component 12 .

In the embodiment of the present application, the receiving path may correspond to the antenna used to receive the signal. When there is only one antenna, there may be one receiving path; when there are multiple antennas, there may be multiple receiving paths.

The embodiment of the present application also provides a radio frequency system, as shown in FIG. 1b, including a transceiver 10, an antenna 11, and a receiving device provided in the embodiment of the present application; wherein, the input port 121 of the filtering component 12 obtains a received signal from the antenna 11, The received signal of the predetermined frequency band is filtered by the filter 122 and sent to the receiving amplifier component 13 through the output port 123; the receiving amplifier component 13 amplifies the received signal of the predetermined frequency band and outputs it to the transceiver 10.

In the embodiment of the present application, the antenna 11 may be used to support the reception and transmission of radio frequency signals in different frequency bands; the radio frequency signals may include 2G, 3G, 4G, 5G signals and so on. Antenna 11 can be an antenna with a resonant element in any structure, such as but not limited to one or more of the following: monopole antenna, dipole antenna, strip antenna, loop antenna, helical antenna, array antenna, patch antenna, slot antenna etc. Antennas with different structures can be used for different frequency bands or combinations of frequency bands.

In the embodiment of the present application, the radio frequency system may include a transmitting component that is independent or integrated with the filtering component in a chip, and is used to transmit the transmitting signal from the transceiver to the antenna.

In the embodiment of the present application, a port may be added to the transceiver 10 to be connected to the output port 123 for receiving a received signal of a predetermined frequency band filtered by a filter.

In the embodiment of the present application, when there are multiple receiving channels, there are multiple receiving devices, corresponding to different receiving channels; and/or, there are multiple filtering components and/or receiving amplifier components in the receiving device, corresponding to Different receive paths.

In an exemplary embodiment, the filter 122 may be, but not limited to, an N28 filter; the received signal in the predetermined frequency band is the received signal in the N28 frequency band.

The wireless frequency of N28 is low, the wavelength is relatively long, the diffraction ability is strong, and the coverage ability is greater. It will become an important low-frequency coverage frequency band of the 5G network.

Since N28 is a relatively wide frequency band, in order to avoid adjacent channel interference during application, only part of the frequency band in N28 can be used, called N28A or N28B; in some application scenarios (such as LTE), B28 is also used instead of N28. The N28 frequency band in this article can be adaptively replaced with N28A, N28B, B28, B28A and other frequency bands according to different application scenarios.

In an exemplary embodiment, there are multiple receiving channels, respectively corresponding to PRX (Primary Receive, main set receiving) signals and DRX (Diversity Receive, diversity receiving) signals; there are multiple filtering components 12, corresponding to different receive path.

In this embodiment, the filter component 12 can be but not limited to two, one is used to receive the main set received signal and perform filtering to obtain the main set received signal of a predetermined frequency band; the other is used to receive the diversity received signal and perform filtering to obtain A diversity reception signal of a predetermined frequency band. In other embodiments, the filter component 12 may only be configured on the receiving path corresponding to the main set or the diversity receiving signal, and the receiving path corresponding to the diversity or main set receiving signal uses an external filter.

In this embodiment, multiple filter components 12 can be set in the same chip or device, or the filter component 12 corresponding to the PRX signal can be set in one chip or device, and the filter component 12 corresponding to the DRX signal can be set in in another chip or device.

In an exemplary embodiment, in order to increase the download rate of the low-frequency network, MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) can be configured to obtain greater throughput. The MIMO function refers to the use of multiple transmitting antennas and receiving antennas, making full use of space resources, and realizing multiple transmissions and multiple receptions through multiple antennas. Without increasing spectrum resources and antenna transmission power, the system channel capacity can be doubled.

In this embodiment, in the case of configuring MIMO, there are multiple receiving paths, corresponding to PRX signals, DRX signals, PRX MIMO signals, and DRX MIMO signals; correspondingly, the antenna 11 in the radio frequency system may include multiple, such as It may include 4 antennas, which are respectively used in TX (transmission) and PRX links, DRX links, PRX MIMO links, and DRX MIMO links.

In this embodiment, there may be multiple filtering components 12, each corresponding to a different receiving path. In other embodiments, when there are multiple receiving paths, only one filter membrane group 12 may be provided for one receiving path, and external filters may be used for other receiving paths.

In an implementation manner of this embodiment, the number of filtering components 12 may be, but not limited to, four, which are respectively used to receive PRX signals, DRX signals, PRX MIMO signals, and DRX MIMO signals and perform filtered output in predetermined frequency bands.

In another implementation manner of this embodiment, there are at least two filter components 12 , among the multiple receiving paths, some of the receiving paths use the filtering component 12 , and the rest of the receiving paths use external filters.

In this embodiment, multiple filter components 12 can be set in the same chip or device; or filter components 12 corresponding to PRX signals and PRX MIMO signals can be set in one chip or device, and filter components 12 corresponding to DRX signals and DRX MIMO signals can be set in one chip or device. The signal filtering component 12 is provided in another chip or device.

In an exemplary embodiment, there are multiple receiving paths and multiple receiving amplifying components, each corresponding to a different receiving path.

In an implementation manner of this embodiment, there are two receiving channels, corresponding to the PRX signal and the DRX signal respectively; correspondingly, there are two receiving amplifying components, which respectively amplify the PRX signal and the DRX signal of a predetermined frequency band and output them.

In another implementation of this embodiment, there are four receiving paths, corresponding to PRX signals, DRX signals, PRX MIMO, and DRX MIMO signals; correspondingly, there are four receiving and amplifying components, respectively corresponding to PRX signals in predetermined frequency bands, DRX Signal, PRX MIMO signal, and DRX MIMO signal are amplified and output.

In this embodiment, multiple receiving and amplifying components can be set in one chip or device; or the receiving and amplifying components corresponding to PRX signals and PRX MIMO signals can be set in one chip or device, and the receiving and amplifying components corresponding to DRX signals and DRX MIMO signals can be set in one chip or device. The signal receiving and amplifying component is set in another chip or device.

In an exemplary embodiment, the radio frequency system may further include: a combiner, configured to divide a received signal entering from the antenna 11 into a low-frequency received signal and a medium-high frequency received signal.

In this embodiment, the input port of the filter component 12 may include a low-frequency input port and a mid-high frequency input port, or the filter component 12 may include a low-frequency filter component and a mid-high frequency filter component.

In an exemplary embodiment, the filtering component 12 includes a plurality of filters 122 of different frequency bands and a plurality of output ports 123; the plurality of output ports 123 can be respectively connected to the output ends of the filters 122 of a plurality of different frequency bands;

The receiving device 12 also includes: a toggle switch; the toggle switch includes at least one first contact and a plurality of second contacts; the first contact is connected to the input port 121, and the plurality of second contacts are respectively connected to filters of different frequency bands 122 inputs.

In this embodiment, by switching the connection relationship between the first contact and the second contact in the switch, it is possible to select among filters of multiple frequency bands, thereby supporting multiple frequency bands.

In this embodiment, the filtering component 12 and the switching switch can be, but not limited to, arranged in the same module.

In an exemplary embodiment, the changeover switch may be a single-pole multiple-throw switch.

In an exemplary embodiment, the receiving amplifying assembly 13 is arranged in the LNA BANK; the receiving amplifying assembly 13 includes: a connected input port group and a low noise amplifier path; the output port 123 of the filtering assembly 12 passes through a port in the input port group Connect to the input end of the low-noise amplifier channel; the low-noise amplifier channel is used to perform low-noise power amplification on the received signal of a predetermined frequency band and then output it.

In an exemplary embodiment, the filtering component 12 can be arranged in the FEM, the filter can be an on-chip filter, the input port 121 can be an antenna port of the FEM, and the output port 123 can be an output port of a predetermined frequency band on the FEM; The filter 122 is connected between the low frequency antenna port and the output port of a predetermined frequency band.

In an implementation manner of this embodiment, the received signal includes a DRX low-frequency signal, and the received signal of a predetermined frequency band includes a DRX signal of a predetermined frequency band; the input port 121 may be the low-frequency antenna port LB ANT of the FEM, and the output port 123 may be a The output port of the predetermined frequency band is, for example but not limited to, an N28 OUT port; the filter 122 is connected between the low frequency antenna port and the output port of the predetermined frequency band.

In this embodiment, the receiving amplification component 13 may be set in the first LNA BANK, which is also referred to as a diversity receiving LNA BANK herein, and the diversity receiving mentioned here includes DRX and DRX MIMO. The first LNA BANK includes the connected first low-frequency input port group LB1 IN and the first low-frequency low-noise amplifier path; the N28 OUT port of the FEM is connected to the input of the first low-frequency low-noise amplifier path through a port in the first low-frequency input port group end; the first low-frequency low-noise amplifier path is used to perform low-noise power amplification on the N28 DRX signal and then output it to the transceiver 10 .

In this embodiment, in the first low-frequency input port group, ports other than the connection output port 123 may be connected to DRX low-frequency signals of other frequency bands or left floating.

In this embodiment, the FEM can also include a switch, which includes at least one first contact, connected to LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the input of the filter 122 end.

In this implementation manner, the changeover switch may be a single-pole multiple-throw switch.

In an example of this embodiment, the FEM provided with the filter assembly is shown in Figure 2, the filter 122 is an N28 filter; the switch is a single-pole five-throw switch SP5T; FEM's low frequency port LB AUX1. In this example, the FEM may also include a digital logic unit ASM RFFE for logic control.

In an example of this embodiment, all or part of the other second contacts in the switch can be connected to the filter input terminals of other frequency band signals, so as to support the reception of multiple frequency bands; the output terminal of the filter 122 is directly connected to the N28 of the FEM OUT port.

In this embodiment, the first LNA BANK may also include a first single-pole multi-throw switch; the first low-noise amplifier path may include a first low-frequency low-noise amplifier LB1 LNA, a first data selector, and a first low-frequency output port LB1 OUT;

Wherein, the first single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the first low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to the first low-frequency input The ports in the port group are connected; the output end of the first low-frequency low-noise amplifier is connected to the first low-frequency output port through the first data selector, and connected to the transceiver 10 through the first low-frequency output port.

The present embodiment is described below with the first example. The radio frequency system of this example is shown in FIG. 22, the main set receives LNA BANK 23 (LNABANK#1 in Fig. 3a), FEM 241, diversity receives LNA BANK25 (LNA BANK#2 in Fig. 3a); Antenna includes first antenna 31, second antenna 32, third antenna Antenna 33, antenna 31; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, a fourth combiner 44, an N28 duplexer 50, a first, a second N28 filters 61,62. Among them, the connection relationships of LB PA Mid 21, MHBPA Mid 22, main set receiving LNA BANK 23, FEM 241, and diversity receiving LNA BANK 25 in the radio frequency system are shown in Figure 3b, Figure 3c, Figure 3d, Figure 3e, and Figure 3f respectively. Show. The FEM 242 employs the FEM shown in FIG. 2 .

In the first example, the first antenna 31 is connected to the LB PA Mid 21 and the MHB PA Mid 22 respectively through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA BANK 23 first low frequency input port LB1 IN2. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency by the second combiner 42, and connected to the second low-frequency input port LB0IN1 of the main set receiving LNA BANK 23 through the first N28 filter 61 and the high-frequency filter respectively and high-frequency input ports. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency through the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 241 and the medium-high frequency antenna port MHB ANT, and the LB ANT port of the FEM 241 is connected to the FEM 241 The input end of the N28 filter, the N28A OUT of the FEM 241 connected to the output end of the N28 filter is connected to the first low frequency input port LB1 IN2 of the diversity receiving LNA BANK 25 . The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency by the fourth combiner 44, and connected to the second low-frequency input port LB0 IN1 of the diversity receiving LNA BANK 25 through the second N28 filter 62 and the high-frequency filter respectively and high-frequency input ports.

The working principle of the first example is described in detail below.

TX (Transmit, transmit) link: (1) the transmit signal is output from the TX0 LB1 port of the transceiver 10; (2) arrive at the 4G LB RFIN port of the LB PA Mid 21 through the radio frequency line; (3) in the LBPA Mid 21, The transmit signal is amplified by the power amplifier 4G LB PA and reaches the single-port contact 9 of the single-pole eight-throw switch SP8T; (4) The single port of the switch is switched to contact 4, so that the transmit signal reaches the N28 duplex from the LB TX OUT4 port (5) transmit signal through N28 duplexer 50, to LB TRX4 port of LBPA Mid 21, and connect to contact 4 of single-pole nine-throw switch SP9T; (6) switch contact 4 to single-port contact in the switch 10. The transmission signal is output from the LB ANT port of LB PA Mid 21; (7) The transmission signal is sent to the first combiner 41 through Path02; (8) The transmission signal is sent to the first antenna 31 through Path01 through the first combiner 41 .

PRX link: (1) The received signal of the main set enters from the first antenna 31, and reaches the first combiner 41 through Path01; (2) The low-frequency signal received by the main set is separated from the first combiner 41 and output to the LB PA The LB ANT port of Mid21 is connected to the single-port contact 10 of the single-pole nine-throw switch SP9T in LB PA Mid 21; (3) SP9T is switched to contact 4, and the signal reaches the N28 duplexer 50 from the LBTRX4 port, and passes through N28 The duplexer 50 reaches the LB1 IN2 port of the main set receiving LNA BANK 23, which is connected to the contact 3 of the single-pole four-throw switch SP4T in the main set receiving LNA BANK 23; (4) the switch switches the contact 3 to a single port Contact 1, the signal reaches the LB1 LNA channel in the main set receiving LNA BANK 23; (5) After the signal is amplified by the LB1 LNA, it is output from the LB1 OUT port of the main set receiving LNA BANK 23 through the data selector MUX1; (6) The SDR PRXE port enters the transceiver 10 .

DRX link: (1) The diversity reception signal enters from the third antenna 33, passes through the path Path05, and reaches the third combiner 43; (2) splits the diversity reception low-frequency signal from the third combiner 43, and arrives through the path Path06 The LB ANT port of FEM 241, which is connected to the single-port contact 6 of the single-pole five-throw switch SP5T in FEM 241; (3) the switch is switched to contact 3, so that the signal passes through the N28 filter in FEM 241 to The N28A OUT port of FEM 241; (4) the signal reaches the LB1 IN2 port of the diversity receiving LNA BANK 25 through the radio frequency wiring, and this port is connected to the contact 3 of the single-pole four-throw switch SP4T in the diversity receiving LNA BANK 25; (5) the The switch switches the contact 3 to the single-port contact 1, so that the signal reaches the LB1 LNA channel in the diversity receiving LNA BANK25; (6) After the signal is amplified by the LB1LNA, it is sent from the LB1 OUT of the diversity receiving LNA BANK 25 through the data selector MUX1 port output; (7) The signal enters the transceiver 10 through the SDR DRXE port.

PRX MIMO link: (1) The received signal of the main set of MIMO enters from the second antenna, passes through the path Path03, and reaches the second combiner 42; (2) the received low-frequency MIMO signal of the main set separated by the second combiner 42 passes through After filtering by the first N28 filter 61, it goes to the main set receiving LNA BANK 23 through the path Path04; (3) the signal enters the main set receiving LNA BANK 23 through the LB0 IN1 port, and reaches the contact of the No. 3 single-pole three-throw switch SP3T#3 3; (4) The switch is switched to single-port contact 1, so that the signal reaches the LB0 LNA channel in the main set receiving LNA BANK 23; (5) After the signal is amplified by the LB0 LNA, it is received from the main set through the data selector MUX2 LB0 OUT port output of LNA BANK 23; (6) enter transceiver 10 through SDR PRX10 port.

DRX MIMO link: (1) MIMO diversity reception signal enters from the fourth antenna, passes through path Path07, to the fourth combiner 44; (2) diversity reception low-frequency MIMO signal split by the fourth combiner 44 passes through the second After filtering by the N28 filter 62, it reaches the diversity receiving LNA BANK 25 through the path Path08; (3) the signal enters the diversity receiving LNA BANK 25 through the LB0 IN1 port, and reaches the contact 3 of the No. 3 single-pole three-throw switch SP3T#3; (4 ) The switch is switched to single-port contact 1, so that the signal reaches the LB0 LNA channel in the diversity receiving LNA BANK 25; (5) After the signal is amplified by the LB0 LNA, it is sent from the LB0 OUT of the diversity receiving LNA BANK 25 through the data selector MUX2 port output; (6) enter the transceiver 10 through the SDR DRX10 port.

In an exemplary embodiment, the filter component can be arranged in the FEM, and the filter can be an on-chip filter; the input port 121 can be an input port of the FEM; the output port 123 can be an output port of the FEM; the filter 122 is connected to between the input and output ports of the FEM.

In an implementation of this embodiment, the received signal includes a DRX MIMO low-frequency signal, and the received signal of a predetermined frequency band includes a DRX MIMO signal of a predetermined frequency band; the input port 121 includes a low-frequency input port LB AUX IN of the FEM; the output port 123 includes a FEM Low frequency output port LBAUX OUT; the filter is connected between LB AUX IN and LB AUX OUT.

In this embodiment, the receiving amplifying component 13 can be arranged in the first LNA BANK, and the first LNA BANK is also referred to as a diversity receiving LNA BANK in this paper; the first LNA BANK includes a connected second low-frequency input port group LBO IN and a second Low-frequency low-noise amplifier path; LB AUXOUT of the FEM is connected to the input end of the second low-frequency low-noise amplifier path through a port in the second low-frequency input port group; the second low-frequency low-noise amplifier path is used for low-noise N28 DRX MIMO signal The power is amplified and output to the transceiver 10 .

In this embodiment, in the second low-frequency input port group, ports other than the connection output port 123 may be connected to DRX MIMO low-frequency signals of other frequency bands or left floating.

In this embodiment, the FEM may further include a switch; the switch includes at least one first contact connected to the LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the N28 filter.

In this implementation manner, the switching switch may be a single-pole multi-throw switch.

In an example of this embodiment, the FEM provided with filter components is shown in Figure 4, and the filter 122 is an N28 filter; One contact, and five second contacts; one of the second contacts is grounded, and the two are respectively connected to the low-frequency ports LB AUX1 and LB AUX2 of the FEM, where LB AUX2 can be connected to the diversity receiving LNA through an external N28 filter BANK includes the connected first low-frequency input port group LB1 IN; the other two contacts can be connected to filter input ports of other frequency band signals. The input end of the filter 122 is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT. In this example, the FEM may also include a digital logic unit ASM RFFE for logic control.

In this embodiment, the diversity receiving LNA BANK may also include a second single-pole multi-throw switch; the second low-frequency low-noise amplifier path includes a second low-frequency input port group LB0 IN, a second low-frequency low-noise amplifier LB0LNA, a second data selector, The second low frequency output port LB0 OUT;

Wherein, the second single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the second low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to the second low-frequency input The ports in the port group are connected; the output end of the second low-frequency low-noise amplifier is connected to the second low-frequency output port through the second data selector, and connected to the transceiver 10 through the second low-frequency output port.

The following uses the second example to illustrate this embodiment. In the radio frequency system of this example, the transceiver 10 is respectively connected to LB PAMid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 242, and diversity receiving LNA BANK 25; , the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, a first combiner Four combiner 44, N28 duplexer 50, first and third N28 filters 61, 63. Among them, the connection relationship of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNA BANK 25 in the radio frequency system can be seen in the first example and shown in Figure 3b, Figure 3c, Figure 3d, and Figure 3f The difference with the first example is that there is no longer the second N28 filter 62, and the signal received by the fourth antenna 34 is passed through the LB AUX IN port of the path Path08 to the FEM 242 through the low-frequency received signal that the fourth combiner 44 separates ; The port that the diversity receiving LNA BANK 25 was originally connected with the second N28 filter 62 is changed to be connected to the LB AUX OUT port of the FEM 242; in addition, the FEM 242 is changed to the FEM shown in Fig. , an external third N28 filter 63 is added, the low-frequency receiving signal received by the LB ANT port of FEM 242 is filtered by N28 through the third N28 filter 63, and then sent to the diversity receiving LNA BANK 25; FEM 242 is in the radio frequency system The connections are shown in Figure 5.

In the second example, the first antenna 31 is respectively connected to LB PA Mid 21 and MHB PA Mid 22 through the first combiner 41; LB PA Mid 21 is externally connected to N28 duplexer 50, and N28 duplexer 50 is connected to the main receiving LNA BANK 23 for the first low frequency input port. The signal received by the second antenna 32 is divided into low frequency and medium high frequency by the second combiner 42, and connected to the second low frequency input port LB0 of the main set receiving LNA BANK 23 through the first N28 filter 61 and the high frequency filter respectively IN1 and high frequency input port. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 242 and the medium-high frequency antenna port MHB ANT; the low-frequency signal is output from the FEM 242 and passed through the Three N28 filters 63 to the first low frequency input port LB1 IN2 of the diversity reception LNA BANK 25. The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency through the fourth combiner 44, and is respectively connected to the second low-frequency input of the diversity receiving LNA BANK 25 through the N28 filter in the FEM 242 and the external high-frequency filter. Port LB0 IN1 and high frequency input port.

The working principle of the second example will be described in detail below in conjunction with FIG. 3b , FIG. 3c , FIG. 3d , FIG. 3f and FIG. 5 .

The TX (Transmit, transmit) link, the PRX link, and the PRX MIMO link are the same as the first example.

DRX link: (1) The diversity reception signal enters from the third antenna 33, passes through the path Path05, and reaches the third combiner 43; (2) splits the diversity reception low-frequency signal from the third combiner 43, and arrives through the path Path06 The LB ANT port of FEM 24, which is connected to the single-port contact 6 of the single-pole five-throw switch SP5T in FEM 242; (3) the switch is switched to contact 4, so that the signal is sent to the LB AUX2 port of FEM 242; (4 ) signal through the third N28 filter 63, to the LB1IN2 port of the diversity reception LNA BANK 25, which is connected to the contact 3 of the single-pole four-throw switch SP4T in the diversity reception LNA BANK 25; (5) the switch switches the contact 3 to the single-port contact 1, so that the signal reaches the LB1 LNA path in the diversity receiving LNABANK 25; (6) after the signal is amplified by the LB1 LNA, it is output from the LB1 OUT port of the diversity receiving LNA BANK 25 through the data selector MUX1; (7 ) signal enters the transceiver 10 through the SDRDRXE port.

DRX MIMO link: (1) The MIMO diversity reception signal enters from the fourth antenna, passes through the path Path07, and reaches the fourth combiner 44; (2) the diversity reception low-frequency MIMO signal split by the fourth combiner 44 passes through the path Path08 Reach FEM 242; (3) The signal enters FEM 242 through the LB AUX IN port, and after being filtered by N28 of N28 Filter, it outputs FEM242 from the LB AUX OUT port; (4) The signal enters the diversity receiving LNA BANK 25 from the LB0 IN1 port, and reaches the single pole The contact 3 of the three-throw switch SP3T#3; (5) the switch is switched to the single-port contact 1, so that the signal reaches the LB0 LNA channel in the diversity receiving LNABANK 25; (6) After the signal is amplified by the LB0 LNA, it is passed through the data The selector MUX2 outputs from the LB0 OUT port of the diversity receiving LNA BANK 25; (7) enters the transceiver 10 through the SDRDRX10 port.

In an exemplary embodiment, the filtering component 12 can be arranged in the FEM, and can include a first filtering component and a second filtering component; the filter of the first filtering component can be an on-chip filter, and the input port can be an antenna of the FEM port, the output port can be the output port of the predetermined frequency band of the FEM, and the filter is connected between the antenna port of the FEM and the output port of the predetermined frequency band; the filter of the second filtering component can be an on-chip filter, and the input port is an FEM The input port and the output port are the output ports of the FEM; the filter is connected between the input port and the output port of the FEM.

In an implementation manner of this embodiment, the received signal includes a DRX low-frequency signal and a DRX MIMO low-frequency signal; correspondingly, the received signal of a predetermined frequency band includes a DRX signal and a DRX MIMO signal of a predetermined frequency band; the input port 121 includes a low-frequency antenna port LB of the FEM ANT and low frequency input port LB AUX IN; the output port 123 includes the output port of the predetermined frequency band of FEM and the low frequency output port LB AUX OUT;

In this embodiment, the filters in the first and second filtering components are the first and second filters respectively, and the first filter 1221 is connected between the LB ANT and the output port of the predetermined frequency band, and is used to filter the DRX low-frequency signal Perform filtering of a predetermined frequency band; the second filter 1222 is connected between LB AUX IN and LB AUX OUT, and is used for filtering the DRX MIMO low frequency signal of a predetermined frequency band.

In this embodiment, the receiving and amplifying component 13 can be arranged in the first LNA BANK, and the first LNA BANK includes a connected first low-frequency input port group LB1 IN and a first low-frequency low-noise amplifier channel, and a connected second low-frequency input port Group LB0 IN and the second low-frequency low-noise amplifier channel; the N28OUT port of the FEM is connected to the input end of the first low-frequency low-noise amplifier channel through a port in the first low-frequency input port group, and the LB AUX OUT of the FEM is through the second low-frequency input port One port in the group is connected to the input end of the second low-frequency low-noise amplifier channel; the first low-frequency low-noise amplifier channel and the second low-frequency low-noise amplifier channel are respectively used for low-noise power amplification of DRX signals and DRX MIMO signals in predetermined frequency bands Then output to the transceiver 10.

In this embodiment, in the first/second low-frequency input port group, other ports except for the connection output port 123 may be connected to DRX/DRX MIMO low-frequency signals of other frequency bands or left floating.

In this embodiment, the FEM can also include a switch, which includes at least one first contact, connected to LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the input of the filter 122 end.

In this implementation manner, the changeover switch may be a single-pole multiple-throw switch.

In an example of this embodiment, the FEM provided with filter components is shown in Figure 6, the filter 122 is an N28 filter; the switch is a single-pole five-throw switch SP5T, and the switch includes a first contact connected to LB ANT , and five second contacts; one of the second contacts is connected to the input of the first filter 1221, one is grounded, and the other is connected to the low-frequency port LB AUX1 of the FEM; the other two contacts can be connected to filters for other frequency band signals The input end of the filter; the output end of the first filter 1221 is directly connected to the N28 OUT port of the FEM. The input end of the second filter 1222 is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT. In this example, the FEM may also include a digital logic unit ASMRFFE for logic control.

In this embodiment, the diversity receiving LNA BANK may also include first and second single-pole multi-throw switches; the first/second low noise amplifier path may include first/second low-frequency low-noise amplifier, first/second data selection device, the first/second low frequency output port;

Wherein, the first and second single-pole multi-throw switches may each include a first contact and a plurality of second contacts, the first contact of the first single-pole multi-throw switch is connected to the input end of the first low-frequency low-noise amplifier, and multiple The two second contacts are respectively connected to each port in the first low-frequency input port group; the output end of the first low-frequency low-noise amplifier is connected to the first low-frequency output port through the first data selector, and connected to the transceiver through the first low-frequency output port. device 10. The first contact of the second single-pole multi-throw switch is connected to the input end of the second low-frequency low-noise amplifier, and a plurality of second contacts are respectively connected to each port in the second low-frequency input port group; the output of the second low-frequency low-noise amplifier The terminal is connected to the second low-frequency output port through the second data selector, and connected to the transceiver 10 through the second low-frequency output port.

The third example is used below to illustrate this embodiment. In the radio frequency system of this example, the transceiver 10 is respectively connected to LB PAMid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 243, and diversity receiving LNA BANK 25; , the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, a first combiner Four combiner 44 , N28 duplexer 50 , first N28 filter 61 . Among them, the connection relationship of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNA BANK 25 in the radio frequency system can be referred to in the first example and shown in Figure 3b, Figure 3c, Figure 3d, and Figure 3f. The difference from the second example is that there is no external third N28 filter 63, and the FEM 243 directly uses the built-in N28 filter to perform N28 filtering on the low-frequency receiving signal input from the LB ANT port, and outputs it to the diversity receiving LNA BANK 25; in addition, the FEM 243 is changed to the FEM shown in FIG. 6 , and the connection relationship of the FEM 243 in the radio frequency system is shown in FIG. 7 .

In the third example, the first antenna 31 is connected to the LB PA Mid 21 and the MHB PA Mid 22 respectively through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA BANK 23 for the first low frequency input port. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency two paths by the second combiner 42, and is respectively connected to the second low-frequency input port and the second low-frequency input port of the LNA BANK 23 of the main collection through the first N28 filter 61 and the high-frequency filter High frequency input port. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency through the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 243 and the medium-high frequency antenna port MHB ANT, and the LB ANT port of the FEM 243 is connected to the FEM 243 The input end of the first filter, the port N28A OUT of the FEM 243 to which the output end of the first filter is connected is connected to the first low frequency input port LB1 IN2 of the diversity reception LNA BANK 25 . The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency through the fourth combiner 44, and is respectively connected to the second low-frequency of the diversity receiving LNA BANK 25 through the second filter in the FEM 243 and the external high-frequency filter. Input port LB0 IN1 and high frequency input port.

In the third example, the TX (Transmit, transmit) link, the PRX link, the DRX link, and the PRX MIMO link are the same as the first example; the DRX MIMO link is the same as the second example.

In an exemplary embodiment, filter assembly 12 is arranged in PA Mid, and filter can be on-chip filter; Input port 121 is the input port of PA Mid; Output port 123 is the output port in PA Mid; Filter 122 Connect between input port and output port.

In an implementation manner of this embodiment, the PA Mid may be an LB PA Mid, the received signal includes a PRX MIMO low-frequency signal, and the received signal of a predetermined frequency band includes a PRX MIMO signal of a predetermined frequency band.

In this embodiment, the input port 121 may include a low-frequency input port LBAUX IN of the LB PA Mid; the output port 123 may include a low-frequency output port LB AUX OUT of the LB PA Mid.

In this embodiment, the receiving amplifying component 13 may be set in the second LNA BANK, and the second LNA BANK is referred to herein as the main set receiving LNA BANK, and the main set receiving here includes PRX and PRX MIMO. The second LNA BANK includes the connected low-frequency input port group LB0 IN and the low-frequency low-noise amplifier channel; the LB AUX OUT of LB PA Mid is connected to the input end of the low-frequency low-noise amplifier channel through a port in the low-frequency input port group; the low-frequency low-noise amplifier The path is used to amplify the N28 PRXMIMO signal with low noise power and output it to the transceiver 10 .

In this embodiment, in the low-frequency input port group, other ports except for the connection output port 123 may be connected to PRX MIMO low-frequency signals of other frequency bands or left floating.

In an example of this embodiment, the LB PA Mid with built-in filter components is shown in FIG. 8 , the filter 122 is an N28 filter, the input end is directly connected to the LB AUX IN, and the output end is directly connected to the LBAUX OUT.

In this embodiment, the main receiver LNA BANK can also include a single-pole multi-throw switch; the low-noise amplifier path can include a low-frequency low-noise amplifier, a data selector, and a low-frequency output port;

Wherein, the single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to each port in the low-frequency input port group connected; the output end of the low-frequency low-noise amplifier is connected to the low-frequency output port through the data selector, and connected to the transceiver 10 through the low-frequency output port.

The following uses the fourth example to illustrate this embodiment. In the radio frequency system of this example, the transceiver 10 is respectively connected to LB PAMid 211, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 24, and diversity receiving LNA BANK 25; , the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, a first combiner Four combiner 44, N28 duplexer 50, second and third N28 filters 62, 63. Among them, MHB PA Mid 22, the main set receiving LNA BANK 23, and the diversity receiving LNABANK 25 in the radio frequency system can refer to the first example and the connection relationship shown in Figure 3c, Figure 3d, and Figure 3f; the difference from the first example is that , there is no N28 filter in the FEM 24, and there are second and third N28 filters 62 and 63 that are plugged in; in addition, the LB PA Mid 211 uses the LBPA Mid shown in Figure 8 instead, including the N28 filter; the LB PA Mid 211 , and the connection relationship of the FEM 24 in the radio frequency system are shown in Fig. 9a and Fig. 9b respectively.

In the fourth example, the first antenna 31 is connected to the LB PA Mid 21 and the MHB PA Mid 22 respectively through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA BANK 23 first low frequency input port LB1 IN2. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency by the second combiner 42, respectively through the built-in N28 filter in LB PA Mid 21 and the external high-frequency filter, and connected to the main receiver LNA BANK 23 The second low frequency input port LB0 IN1 and high frequency input port. The third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, respectively connected to the low-frequency antenna port LB ANT of the FEM 24 and the medium-high frequency antenna port MHB ANT, wherein the low-frequency signal is output from the LB AUX2 port of the FEM 24, to the first low-frequency input port LB1 IN2 of the diversity receiving LNA BANK 23 through the external N28 filter 63 . The fourth antenna 34 is divided into low-frequency and medium-high-frequency two paths through the fourth combiner 44, and is respectively connected to the second low-frequency input port LB0 IN1 of the diversity receiving LNA BANK 25 and the high-frequency through the second N28 filter 62 and the high-frequency filter. input port.

The working principle of the fourth example will be described in detail below in conjunction with Fig. 3c, Fig. 3d, Fig. 3f and Fig. 9a and Fig. 9b.

The TX (Transmit, transmit) link, the PRX link, and the DRX MIMO link are the same as the first example; the DRX link is the same as the second example.

PRX MIMO link: (1) The received signal of the main set of MIMO enters from the second antenna, passes through the path Path03, and reaches the second combiner 42; (2) the received low-frequency MIMO signal of the main set separated by the second combiner 42 passes through Path04, to LB PA Mid 211; (3) Signal enters LB PAMid 211 from LB AUX IN port, N28 filtering is performed by N28 Filter, and LB PA Mid 211 is output from LB AUX OUT; (4) Signal enters main set through LB0 IN1 port In the receiving LNA BANK 23, it reaches the contact 3 of the single-pole three-throw switch SP3T#3; (5) the switch is switched to the single-port contact 1, so that the signal reaches the LB0 LNA channel in the main receiving LNA BANK 23; (6 ) signal is amplified by the LB0 LNA, and is output from the LB0 OUT port of the main set receiving LNA BANK 23 through the data selector MUX2; (7) enters the transceiver 10 through the SDR PRX10 port.

In the fourth example, the FEM 24 can be replaced by the FEM in any one of the first example, the second example, and the third example. Correspondingly, when the FEM in any of the above examples is used, the DRX link and/or Or the DRX MIMO link will change according to the corresponding example.

In the fifth example, on the basis of the fourth example, the FEM is replaced by the FEM in the third example; in the fifth example, the filtering component 12 includes the FEM as shown in FIG. 6 and the LB PA Mid as shown in FIG. 8 .

The radio frequency system of the fifth example is shown in Figure 10, and the transceiver 10 is respectively connected to LB PA Mid 211, MHB PA Mid22, main set receiving LNA BANK 23 (LNA BANK#1 in Figure 10), FEM243, diversity receiving LNA BANK 25 (LNA BANK#2 in Fig. 10); In this example, the antenna includes the first antenna 31, the second antenna 32, the third antenna 33, and the antenna 31; the radio frequency system also includes the first combiner 41, the second combiner A combiner 42, a third combiner 43, a fourth combiner 44, and an N28 duplexer 50. Among them, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNABANK 25 can refer to the first example and Fig. 3c, Fig. 3d, and Fig. 3f for their respective connection relationships in the radio frequency system; the difference from the fourth example That is, there are no second and third N28 filters that are externally installed, and all of them are built into the FEM 243 . The LB PA Mid 211 uses the LB PA Mid shown in FIG. 8 , and the FEM 243 uses the FEM shown in FIG. 6 .

In the fifth example, the first antenna 31 is respectively connected to the LB PA Mid 211 and the MHB PAMid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA BANK 23 first low frequency input port LB1 IN2. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency by the second combiner 42, and is respectively connected to the main set receiving LNA BANK 23 through the N28 filter in the LB PA Mid 211 and the external high-frequency filter. Two low frequency input port LB0 IN1 and high frequency input port. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 243 and the medium-high frequency antenna port MHBANT; the LB ANT port of the FEM 243 is connected to the FEM 243 The input end of the first N28 filter, the N28A OUT of the FEM 243 connected to the output end of the first N28 filter is connected to the first low frequency input port LB1IN2 of the diversity receiving LNA BANK 25 . The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency two paths by the fourth combiner 44, passes through the second N28 filter in the FEM 243 and an external high-frequency filter respectively, and is connected to the second channel of the diversity receiving LNABANK 25. Low frequency input port LB0 IN1 and high frequency input port.

The working principle of the fifth example is described in detail below.

The TX (Transmit, transmit) link, the PRX link, and the DRX link are the same as the first example; the DRX MIMO link is the same as the second example; the PRX MIMO link is the same as the fourth example.

The embodiment of the present application also provides a communication device, including the receiving device or the radio frequency system as provided in any one of the above embodiments. The communication device does not increase the area and cost of the main board by building the filter into the filter component, and has good receiving performance. When multiple channels of receiving signals are included and the built-in filter includes an N28 filter, the communication device can support N28 MIMO.

The application describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be obvious to those of ordinary skill in the art that within the scope of the embodiments described in the application, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this application can also be combined with any conventional features or elements to form unique inventive solutions as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive solutions to form yet another unique inventive solution as defined by the claims. It is therefore to be understood that any of the features shown and/or discussed in this application can be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be limited except in accordance with the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Furthermore, in describing representative embodiments, the specification may have presented a method and/or process as a particular sequence of steps. However, to the extent the method or process is not dependent on the specific order of steps described herein, the method or process should not be limited to the specific order of steps described. Other sequences of steps are also possible, as will be appreciated by those of ordinary skill in the art. Therefore, the specific order of the steps set forth in the specification should not be construed as limitations on the claims. In addition, claims for the method and/or process should not be limited to performing their steps in the order written, those skilled in the art can easily understand that these orders can be changed and still remain within the spirit and scope of the embodiments of the present application Inside.

Claims (15)

1. A receiving device, applied to a receive path, comprising: the filter component and the receiving amplification component; the filtering assembly includes:

an input port for receiving a reception signal from an antenna;

the on-chip filter is used for filtering the received signal to obtain a received signal of a preset frequency band;

the output port is used for sending the receiving signal of the preset frequency band to the receiving amplification component;

under the condition that the receiving signals from the antenna comprise MIMO (multiple input multiple output) main set receiving signals, a filtering component for receiving the MIMO main set receiving signals is packaged in a power amplification module PA Mid; under the condition that the receiving signals from the antenna comprise diversity receiving signals and/or MIMO diversity receiving signals, a filtering component for receiving the diversity receiving signals and/or MIMO diversity receiving signals is packaged in a radio frequency front end module FEM;

and the receiving amplification component is used for outputting the received signal of the preset frequency band after power amplification.

2. The receiving device of claim 1, wherein the predetermined frequency band comprises one or more of: n28, B28, N28A.

3. The receiving device of claim 1, wherein: in the case that the received signals from the antennas include diversity received signals and mimo diversity received signals, the filtering components include at least two components, which are respectively used for receiving the diversity received signals and the mimo diversity received signals.

4. The receiving device of claim 1, wherein:

if the filtering component is arranged in the FEM, the input port is an antenna port of the FEM, and the output port is an output port of the FEM in the preset frequency band; the filter is connected between the antenna port and the output port of the predetermined frequency band.

5. The receiving device of claim 1, wherein:

if the filter component is set in the FEM, the input port is an input port of the FEM; the output port is an output port of the FEM; the filter is connected between the input port and the output port.

6. The receiving device of claim 1, wherein:

if the receiving paths are multiple, the filtering assembly is arranged in the FEM, and the filtering assembly comprises a first filtering assembly and a second filtering assembly; an input port in the first filtering component is an antenna port of the FEM, an output port is an output port of a preset frequency band of the FEM, and a filter is connected between the antenna port of the FEM and the output port of the preset frequency band;

an input port in the second filtering component is an input port of the FEM, and an output port of the second filtering component is an output port of the FEM; the filter is connected between the input port and the output port of the FEM.

7. The receiving device of any of claims 1, 4-6, wherein:

if the filtering component is arranged in a power amplification module PA Mid, the input port is the input port of the PA Mid; the output port is an output port in the PA Mid; the filter is connected between the input port and the output port of the PA Mid.

8. The receiving device of claim 1, wherein the receiving path is plural, corresponding to a primary set received signal and a diversity received signal, respectively; the filter components are multiple and respectively correspond to different receiving paths.

9. The receiving device of claim 8, wherein: the receiving paths are multiple and respectively correspond to a main set receiving signal, a diversity receiving signal, a multi-input multi-output main set receiving signal and a multi-input multi-output diversity receiving signal; the filter components are multiple and respectively correspond to different receiving paths.

10. A receiving device according to claim 8 or 9, characterized in that: the receiving amplification components are multiple and respectively correspond to different receiving passages.

11. The receiving device of claim 1, wherein: the receiving amplification component is arranged in a low noise amplification group LNA BANK;

the receiving amplification assembly includes: the input port group and the low-noise amplifier circuit are connected; the output port of the filtering component is connected with the input end of the low-noise amplifier circuit through one port in the input port group; and the low-noise amplifier circuit is used for carrying out low-noise power amplification on the received signal of the preset frequency band and then outputting the amplified signal.

12. The receiving device of claim 1, wherein the filtering component comprises a plurality of filters of different frequency bands and a plurality of the output ports; the output ports are respectively connected with the output ends of the filters with different frequency bands;

the receiving device further includes: a switch; the diverter switch comprises at least one first contact and a plurality of second contacts; the first contact is connected to the input port, and the plurality of second contacts are respectively connected to the input ends of the plurality of filters of different frequency bands.

13. A radio frequency system, comprising: antenna, transceiver, receiving device according to any of claims 1-12.

14. The radio frequency system according to claim 13, wherein when there are a plurality of receiving paths, there are a plurality of receiving devices respectively corresponding to different receiving paths; and/or a plurality of filtering components and/or receiving amplifying components in the receiving device respectively correspond to different receiving channels.

15. A communication device, characterized in that it comprises a radio frequency system according to claim 13 or 14.

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