CN105743518B - A kind of antenna tuning method and device - Google Patents
A kind of antenna tuning method and device Download PDFInfo
- Publication number
- CN105743518B CN105743518B CN201610040035.7A CN201610040035A CN105743518B CN 105743518 B CN105743518 B CN 105743518B CN 201610040035 A CN201610040035 A CN 201610040035A CN 105743518 B CN105743518 B CN 105743518B
- Authority
- CN
- China
- Prior art keywords
- tuning
- signal
- standing
- voltage value
- wave ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 claims description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims 3
- 238000004891 communication Methods 0.000 abstract description 28
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000010295 mobile communication Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 4
- 238000007726 management method Methods 0.000 description 3
- 101100381996 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) BRO1 gene Proteins 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 101150012579 ADSL gene Proteins 0.000 description 1
- 102100020775 Adenylosuccinate lyase Human genes 0.000 description 1
- 108700040193 Adenylosuccinate lyases Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/103—Reflected power, e.g. return loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
- H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Telephone Function (AREA)
- Transmitters (AREA)
Abstract
The invention discloses a kind of antenna tuning method, circuit and devices, belong to field of communication technology, which comprises the signal of reception amplifier output, and the signal is tuned for the first time by tuning network；Judge whether the standing-wave ratio of first tuning signal is greater than preset threshold value；If so, gradually driving tuning network, best match tuning network parameter is obtained；The first tuning signal is tuned again by best match tuning network parameter, and launch from antenna, the present invention be matched to most preferably by intelligent measurement standing wave and to tuning network, so that standing-wave ratio is smaller, the energy gone out by aerial radiation is more.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of antenna tuning method and devices.
Background technique
In the antenna transmission circuit of communication system, usually because resistance matching problem cause standing wave excessive, and make through
The signal for crossing amplifier fails to launch by antenna completely, and reflected energy can also be to the component in circuit
Having detrimental effect to even result in system can not work.The radio circuit portion of many electric terminal equipments in existing technical solution
Divide the parameter often through apparatus measures its load impedance and standing wave, then the parameter of impedance is improved on hardware, so that
Impedance more matches, to reduce influence of the reflection signal to circuit.
However, manually modify the parameter of Hardware match seems excessively troublesome during debugging, workload is very big, and
And system tranmitting frequency meeting real-time change, different frequencies need different match parameters, and antenna tuning parameters can not be made real
It is now best.
Summary of the invention
It is a primary object of the present invention to propose a kind of antenna tuning method, circuit and device, it is intended to it is excessive to solve standing wave
And the problem of real-time change, antenna optimal tuning can not be made.
To achieve the above object, provided by the invention
A kind of antenna tuning method, the method includes the steps:
The signal of reception amplifier output, and the signal is tuned for the first time by tuning network；
Judge whether the standing-wave ratio of first tuning signal is greater than preset threshold value；
If so, gradually driving tuning network, best match tuning network parameter is obtained；
The first tuning signal is tuned again by best match tuning network parameter, and is launched from antenna
It goes.
Optionally, judge whether the standing-wave ratio of first tuning signal is greater than preset threshold value and includes:
In real time or timing carries out standing wave detection to first tuning signal；
The standing-wave ratio of the standing wave is calculated by CPU arithmetic element；
The standing-wave ratio is compared with preset threshold value.
Optionally, the standing-wave ratio for calculating the standing wave by CPU arithmetic element includes:
Reflection power coupled signal and incident power coupling are coupled into from the first tuning signal by bidirectional coupler
Close signal；
Reflection function is acquired by sequentially connected first detecting circuit, the first low-pass filter and the first direct current acquisition module
The reflected voltage value of rate coupled signal；It is adopted by sequentially connected second detecting circuit, the second low-pass filter and the second direct current
Collect the incident voltage value of module acquisition incident power coupled signal；
The ratio that reflected voltage value and incident voltage value are calculated by CPU arithmetic element is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
Optionally, the tuning network includes capacitor frame and inductance frame.
In addition, to achieve the above object, the present invention also proposes a kind of antenna tuning circuit, comprising:
Amplifier is tuned to first tuning signal for input signal to be amplified and output to tuning network；
Detection circuit, for judging whether the standing-wave ratio of the first tuning signal is greater than preset threshold value；If so, by
Step driving tuning network, obtains best match tuning network parameter；
Tuning network, the signal for exporting to the amplifier is tuned for the first time, and tunes net by best match
Network parameter tunes the first tuning signal again.
Optionally, the detection circuit includes: bidirectional coupler, sequentially connected first detecting circuit, the first low pass filtered
Wave device and the first direct current acquisition module, sequentially connected second detecting circuit, the second low-pass filter and the second direct current acquire mould
Block, CPU arithmetic element；
Wherein, bidirectional coupler, for being coupled into reflection power coupled signal and incidence from the first tuning signal
Power coupled signal；
Sequentially connected first detecting circuit, the first low-pass filter and the first direct current acquisition module are for acquiring two-way coupling
The reflected voltage value of the reflection power coupled signal of clutch output；
Sequentially connected second detecting circuit, the second low-pass filter and the second direct current acquisition module are for acquiring two-way coupling
The incident voltage value of the incident power coupled signal of clutch output；
CPU arithmetic element is used to calculate reflection coefficient and standing-wave ratio by the reflected voltage value and incident voltage value.
Optionally, the CPU arithmetic element is used to calculate reflection coefficient by the reflected voltage value and incident voltage value
And standing-wave ratio specifically:
The ratio that reflected voltage value and incident voltage value are calculated by CPU arithmetic element is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
Optionally, the tuning network includes capacitor frame and inductance frame.
In addition, to achieve the above object, the present invention also proposes a kind of antenna tuning unit, comprising:
The signal for the signal of reception amplifier output, and is sent to tuning network by receiving module；
Judgment module, for judging whether the standing-wave ratio of first tuning signal is greater than preset threshold value；
Matching module obtains best match tune for gradually driving tuning network when standing-wave ratio is greater than preset threshold value
Humorous network parameter；
Tuner module, the signal for exporting to the amplifier carries out first tuning and obtains first tuning signal, and leads to
Best match tuning network parameter is crossed to tune the first tuning signal again.
Optionally, the judgment module includes:
Standing wave detection unit, for carrying out standing wave detection to the first tuning signal in real time or periodically；
Computing unit, for calculating the standing-wave ratio of the standing wave by CPU arithmetic element；
Comparing unit, for the standing-wave ratio to be compared with preset threshold value.
A kind of antenna tuning method, circuit and device proposed by the present invention, which comprises reception amplifier output
Signal, and the signal is tuned for the first time by tuning network；It is pre- to judge whether the standing-wave ratio of first tuning signal is greater than
If threshold value；If so, gradually driving tuning network, best match tuning network parameter is obtained；Net is tuned by best match
Network parameter tunes the first tuning signal again, and launches from antenna, and the present invention passes through intelligent measurement standing wave
And tuning network be matched to most preferably, so that standing-wave ratio is smaller, the energy gone out by aerial radiation is more.
Detailed description of the invention
The hardware structural diagram of Fig. 1 mobile terminal of each embodiment to realize the present invention；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；
Fig. 3 is the antenna tuning method flow diagram that the embodiment of the present invention one provides；
Fig. 4 is antenna tuning method flow diagram provided by Embodiment 2 of the present invention；
Fig. 5 is the circuit diagram for the antenna tuning circuit that the embodiment of the present invention three provides；
Fig. 6 is the functional exemplary block diagram for the antenna tuning unit that the embodiment of the present invention four provides；
Fig. 7 is the functional exemplary block diagram of judgment module in Fig. 6.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The mobile terminal of each embodiment of the present invention is realized in description with reference to the drawings.In subsequent description, use
For indicate element such as " module ", " component " or " unit " suffix only for being conducive to explanation of the invention, itself
There is no specific meanings.Therefore, " module " can be used mixedly with " component ".
Mobile terminal can be implemented in a variety of manners.For example, terminal described in the present invention may include such as moving
Phone, smart phone, laptop, digit broadcasting receiver, PDA (personal digital assistant), PAD (tablet computer), PMP
The mobile terminal of (portable media player), navigation device etc. and such as number TV, desktop computer etc. are consolidated
Determine terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that in addition to being used in particular for moving
Except the element of purpose, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.
Fig. 1 is a kind of hardware configuration signal of mobile terminal for optionally realizing each embodiment of the present invention.
Mobile terminal 100 may include wireless communication unit 110, A/V (audio/video) input unit 120, user's input
Unit 130, sensing unit 140, output unit 150, memory 160, interface unit 170, controller 180 and power supply unit 190
Etc..Fig. 1 shows the mobile terminal with various assemblies, it should be understood that being not required for implementing all groups shown
Part.More or fewer components can alternatively be implemented.The element of mobile terminal will be discussed in more detail below.
Wireless communication unit 110 generally includes one or more components, allows mobile terminal 100 and wireless communication system
Or the radio communication between network.For example, wireless communication unit may include broadcasting reception module 111, mobile communication module
112, at least one of wireless Internet module 113 and short range communication module 114.
Broadcasting reception module 111 receives broadcast singal and/or broadcast from external broadcast management server via broadcast channel
Relevant information.Broadcast channel may include satellite channel and/or terrestrial channel.Broadcast management server, which can be, to be generated and sent
The broadcast singal and/or broadcast related information generated before the server or reception of broadcast singal and/or broadcast related information
And send it to the server of terminal.Broadcast singal may include TV broadcast singal, radio signals, data broadcasting
Signal etc..Moreover, broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast phase
Closing information can also provide via mobile communications network, and in this case, broadcast related information can be by mobile communication mould
Block 112 receives.Broadcast singal can exist in a variety of manners, for example, it can be with the electronics of digital multimedia broadcasting (DMB)
Program guide (EPG), digital video broadcast-handheld (DVB-H) electronic service guidebooks (ESG) etc. form and exist.Broadcast
Receiving module 111 can receive signal broadcast by using various types of broadcast systems.Particularly, broadcasting reception module 111
It can be wide by using such as multimedia broadcasting-ground (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video
It broadcasts-holds (DVB-H), forward link media (MediaFLO@) Radio Data System, received terrestrial digital broadcasting integrated service
(ISDB-T) etc. digit broadcasting system receives digital broadcasting.Broadcasting reception module 111, which may be constructed such that, to be adapted to provide for extensively
Broadcast the various broadcast systems and above-mentioned digit broadcasting system of signal.Via the received broadcast singal of broadcasting reception module 111 and/
Or broadcast related information can store in memory 160 (or other types of storage medium).
Mobile communication module 112 sends radio signals to base station (for example, access point, node B etc.), exterior terminal
And at least one of server and/or receive from it radio signal.Such radio signal may include that voice is logical
Talk about signal, video calling signal or according to text and/or Multimedia Message transmission and/or received various types of data.
The Wi-Fi (Wireless Internet Access) of the support mobile terminal of wireless Internet module 113.The module can be internally or externally
It is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved in the module may include WLAN (Wireless LAN) (Wi-Fi), Wibro
(WiMAX), Wimax (worldwide interoperability for microwave accesses), HSDPA (high-speed downlink packet access) etc..
Short range communication module 114 is the module for supporting short range communication.Some examples of short-range communication technology include indigo plant
ToothTM, radio frequency identification (RFID), Infrared Data Association (IrDA), ultra wide band (UWB), purple honeybeeTMEtc..
A/V input unit 120 is for receiving audio or video signal.A/V input unit 120 may include 121 He of camera
Microphone 1220, camera 121 is to the static map obtained in video acquisition mode or image capture mode by image capture apparatus
The image data of piece or video is handled.Treated, and picture frame may be displayed on display unit 151.At camera 121
Picture frame after reason can store in memory 160 (or other storage mediums) or carry out via wireless communication unit 110
It sends, two or more cameras 1210 can be provided according to the construction of mobile terminal.Microphone 122 can be in telephone relation mould
Sound (audio data) is received via microphone in formula, logging mode, speech recognition mode etc. operational mode, and can be incited somebody to action
Such acoustic processing is audio data.Audio that treated (voice) data can be converted in the case where telephone calling model
For the format output that can be sent to mobile communication base station via mobile communication module 112.Various types can be implemented in microphone 122
Noise eliminate (or inhibit) algorithm with eliminate noise that (or inhibition) generates during sending and receiving audio signal or
Person's interference.
Sensing unit 140 detects the current state of mobile terminal 100, (for example, mobile terminal 100 opens or closes shape
State), the position of mobile terminal 100, user is for the presence or absence of contact (that is, touch input) of mobile terminal 100, mobile terminal
100 orientation, the acceleration or deceleration movement of mobile terminal 100 and direction etc., and generate for controlling mobile terminal 100
The order of operation or signal.For example, sensing unit 140 can sense when mobile terminal 100 is embodied as sliding-type mobile phone
The sliding-type phone is to open or close.In addition, sensing unit 140 be able to detect power supply unit 190 whether provide electric power or
Whether person's interface unit 170 couples with external device (ED).
Interface unit 170 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example,
External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing
Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Identification module can be storage and use each of mobile terminal 100 for verifying user
It plants information and may include subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM)
Etc..In addition, the device (hereinafter referred to as " identification device ") with identification module can take the form of smart card, therefore, know
Other device can be connect via port or other attachment devices with mobile terminal 100.Interface unit 170, which can be used for receiving, to be come from
The input (for example, data information, electric power etc.) of external device (ED) and the input received is transferred in mobile terminal 100
One or more elements can be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 100 is connect with external base, interface unit 170 may be used as allowing will be electric by it
Power, which is provided from pedestal to the path or may be used as of mobile terminal 100, allows the various command signals inputted from pedestal to pass through it
It is transferred to the path of mobile terminal.The various command signals or electric power inputted from pedestal, which may be used as mobile terminal for identification, is
The no signal being accurately fitted on pedestal.Output unit 150 is configured to provide with vision, audio and/or tactile manner defeated
Signal (for example, audio signal, vision signal, alarm signal, vibration signal etc.) out.Output unit 150 may include audio
Output module 152, alarm unit 153 etc..
Audio output module 152 can mobile terminal be in call signal reception pattern, call mode, logging mode,
It is when under the isotypes such as speech recognition mode, broadcast reception mode, wireless communication unit 110 is received or in memory 160
The audio data transducing audio signal of middle storage and to export be sound.Moreover, audio output module 152 can provide and movement
The relevant audio output of specific function (for example, call signal receives sound, message sink sound etc.) that terminal 100 executes.
Audio output module 152 may include loudspeaker, buzzer etc..
Alarm unit 153 can provide output notifying event to mobile terminal 100.Typical event can be with
Including calling reception, message sink, key signals input, touch input etc..Other than audio or video output, alarm unit
153 can provide output in different ways with the generation of notification event.For example, alarm unit 153 can be in the form of vibration
Output is provided, when receiving calling, message or some other entrance communications (incomingcommunication), alarm list
Member 153 can provide tactile output (that is, vibration) to notify to user.By providing such tactile output, even if
When the mobile phone of user is in the pocket of user, user also can recognize that the generation of various events.Alarm unit 153
The output of the generation of notification event can be provided via audio output module 152.
Memory 160 can store the software program etc. of the processing and control operation that are executed by controller 180, Huo Zheke
Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And
And memory 160 can store about the vibrations of various modes and audio signal exported when touching and being applied to touch screen
Data.
Memory 160 may include the storage medium of at least one type, and the storage medium includes flash memory, hard disk, more
Media card, card-type memory (for example, SD or DX memory etc.), random access storage device (RAM), static random-access storage
Device (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read only memory
(PROM), magnetic storage, disk, CD etc..Moreover, mobile terminal 100 can execute memory with by network connection
The network storage device of 160 store function cooperates.
The overall operation of the usually control mobile terminal of controller 180.For example, controller 180 executes and voice communication, data
Communication, video calling etc. relevant control and processing.In addition, controller 180 may include for reproducing (or playback) more matchmakers
The multi-media module 1810 of volume data, multi-media module 1810 can construct in controller 180, or can be structured as and control
Device 180 processed separates.Controller 180 can be with execution pattern identifying processing, by the handwriting input executed on the touchscreen or figure
Piece draws input and is identified as character or image.
Power supply unit 190 receives external power or internal power under the control of controller 180 and provides operation each member
Electric power appropriate needed for part and component.
Various embodiments described herein can be to use the calculating of such as computer software, hardware or any combination thereof
Machine readable medium is implemented.Hardware is implemented, embodiment described herein can be by using application-specific IC
(ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), scene can
Programming gate array (FPGA), controller, microcontroller, microprocessor, is designed to execute function described herein processor
At least one of electronic unit is implemented, and in some cases, such embodiment can be implemented in controller 180.
For software implementation, the embodiment of such as process or function can with allow to execute the individual of at least one functions or operations
Software module is implemented.Software code can by the software application (or program) write with any programming language appropriate Lai
Implement, software code can store in memory 160 and be executed by controller 180.
So far, oneself is through describing mobile terminal according to its function.In the following, for the sake of brevity, will description such as folded form,
Slide type mobile terminal in various types of mobile terminals of board-type, oscillating-type, slide type mobile terminal etc., which is used as, to be shown
Example.Therefore, the present invention can be applied to any kind of mobile terminal, and be not limited to slide type mobile terminal.
Mobile terminal 100 as shown in Figure 1 may be constructed such that using via frame or grouping send data it is all if any
Line and wireless communication system and satellite-based communication system operate.
Referring now to Fig. 2 description communication system that wherein mobile terminal according to the present invention can operate.
Different air interface and/or physical layer can be used in such communication system.For example, used by communication system
Air interface includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and universal mobile communications system
System (UMTS) (particularly, long term evolution (LTE)), global system for mobile communications (GSM) etc..As non-limiting example, under
The description in face is related to cdma communication system, but such introduction is equally applicable to other types of system.
With reference to Fig. 2, cdma wireless communication system may include multiple mobile terminals 100, multiple base stations (BS) 270, base station
Controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to and Public Switched Telephony Network (PSTN)
290 form interface.MSC280 is also structured to form interface with the BSC275 that can be couple to base station 270 via back haul link.
Back haul link can be constructed according to any in several known interfaces, and the interface includes such as E1/T1, ATM, IP,
PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system may include multiple BSC2750 as shown in Figure 2.
Each BS270 can service one or more subregions (or region), by multidirectional antenna or the day of direction specific direction
Each subregion of line covering is radially far from BS270.Alternatively, each subregion can be by two or more for diversity reception
Antenna covering.Each BS270, which may be constructed such that, supports multiple frequency distribution, and the distribution of each frequency has specific frequency spectrum
(for example, 1.25MHz, 5MHz etc.).
What subregion and frequency were distributed, which intersects, can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver
System (BTS) or other equivalent terms.In this case, term " base station " can be used for broadly indicating single
BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Alternatively, each subregion of specific BS270 can be claimed
For multiple cellular stations.
As shown in Figure 2, broadcast singal is sent to the mobile terminal operated in system by broadcsting transmitter (BT) 295
100.Broadcasting reception module 111 as shown in Figure 1 is arranged at mobile terminal 100 to receive the broadcast sent by BT295
Signal.In fig. 2 it is shown that several global positioning system (GPS) satellites 300.The help of satellite 300 positions multiple mobile terminals
At least one of 100.
In Fig. 2, multiple satellites 300 are depicted, it is understood that, it is useful to can use any number of satellite acquisition
Location information.GPS module 115 as shown in Figure 1 is generally configured to cooperate with satellite 300 to obtain desired positioning and believe
Breath.It substitutes GPS tracking technique or except GPS tracking technique, the other of the position that can track mobile terminal can be used
Technology.In addition, at least one 300 property of can choose of GPS satellite or extraly processing satellite dmb transmission.
As a typical operation of wireless communication system, BS270 receives the reverse link from various mobile terminals 100
Signal.Mobile terminal 100 usually participates in call, information receiving and transmitting and other types of communication.Certain base station 270 is received each anti-
It is handled in specific BS270 to link signal.The data of acquisition are forwarded to relevant BSC275.BSC provides call
The mobile management function of resource allocation and the coordination including the soft switching process between BS270.The number that BSC275 will also be received
According to MSC280 is routed to, the additional route service for forming interface with PSTN290 is provided.Similarly, PSTN290 with
MSC280 forms interface, and MSC and BSC275 form interface, and BSC275 controls BS270 correspondingly with by forward link signals
It is sent to mobile terminal 100.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of the method for the present invention is proposed.
Embodiment one
As shown in figure 3, first embodiment of the invention proposes a kind of antenna tuning method, the method includes the steps:
The signal that S10, reception amplifier export, and the signal is tuned for the first time by tuning network；
S20, judge whether the standing-wave ratio of first tuning signal is greater than preset threshold value；
S30, if so, gradually drive tuning network, obtain best match tuning network parameter；Otherwise enter step S31,
The signal is directly launched from antenna；
S40, the first tuning signal is tuned by best match tuning network parameter again, and is sent out from antenna
It is shot out.
In the present embodiment, be matched to most preferably, so that standing-wave ratio is more by intelligent measurement standing wave and to tuning network
Small, the energy gone out by aerial radiation is more.
In the present embodiment, signal to be sent pass through after amplifier PA is amplified first after tuning network from antenna
Launch, in the present invention, bidirectional coupler is added after amplifier and tuning network, is coupled into certain attenuation ratio
Reflection power coupled signal and incident power coupled signal, being coupled into the signal come is AC signal, is needed by after detection
It just can be carried out direct current acquisition, also need to be filtered by low-pass filter LPF after detection, to reject other high frequency spurs,
Direct current signal enters CPU arithmetic element from direct current acquisition module AD, and CPU arithmetic element recognizes simulation electricity by analog-digital converter
Pressure, in the present embodiment, the detecting circuit include the first detecting circuit and the second detecting circuit, and the first detecting circuit is for connecing
Reflection power coupled signal is received, the second detecting circuit is for receiving incident power coupled signal, after first detecting circuit
The first low-pass filter is connected, connects the first direct current acquisition module after first low-pass filter, first direct current is adopted
Collect module and the reflected voltage value of reflection power coupled signal is sent to CPU arithmetic element；Connect after second detecting circuit
The second low-pass filter is connect, the second direct current acquisition module, the second direct current acquisition are connected after second low-pass filter
The incident voltage value of incident power coupled signal is sent to CPU arithmetic element by module；CPU arithmetic element calculates reflected voltage value
Ratio with incident voltage value is reflection coefficientUtilize formulaStanding-wave ratio VSWR is acquired, at this point, judgement
Whether standing-wave ratio is greater than preset threshold value, then gradually drives tuning network, obtains best match tuning network parameter；Otherwise, will
The signal is directly launched from antenna；In the ideal situation, indicate that the signal is sent out by antenna completely when standing-wave ratio is 1
It is shot out, without reflected energy, this is a kind of perfect condition certainly, and the preset threshold value in the present embodiment can be with
It is a numerical value more slightly larger than 1, is determined, can be preset in antenna transmission circuit by tuning efficiency, can also passed through
It manually sets.
In the present embodiment, tuning network is mainly made of capacitor frame and inductance frame, in the field of business, and smith circle diagram is
It, can be to inductance according to the mobility of smith circle diagram load impedance for analyzing one of the effective ways of transmission line matching problem
Or capacitor is gradually controlled, and such as: when being connected in parallel with a capacitor, impedance point will be mobile to the smoother hour hands of conductance；When series connection one
When a capacitor, impedance point will be mobile counterclockwise to resistance circle.Improve impedance using the method for gradually series-parallel reactance component
Match, until load impedance is up to standard so that minimum.
Embodiment two
As shown in figure 4, in the present embodiment, shown step S20 includes:
S21, standing wave detection is carried out to first tuning signal in real time or periodically；
S22, the standing-wave ratio that the standing wave is calculated by CPU arithmetic element；
S23, the standing-wave ratio is compared with preset threshold value.
In the present embodiment, the standing-wave ratio for calculating the standing wave by CPU arithmetic element includes:
Reflection power coupled signal and incident power coupling are coupled into from the first tuning signal by bidirectional coupler
Close signal；
Reflection function is acquired by sequentially connected first detecting circuit, the first low-pass filter and the first direct current acquisition module
The reflected voltage value of rate coupled signal；It is adopted by sequentially connected second detecting circuit, the second low-pass filter and the second direct current
Collect the incident voltage value of module acquisition incident power coupled signal；
The ratio that reflected voltage value and incident voltage value are calculated by CPU arithmetic element is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
Embodiment three
As shown in figure 5, the present invention further provides a kind of antenna tuning circuits, comprising:
Amplifier PA is tuned to first tuning signal for input signal to be amplified and output to tuning network；
Detection circuit, for judging whether the standing-wave ratio of the first tuning signal is greater than preset threshold value；If so, by
Step driving tuning network, obtains best match tuning network parameter；
Tuning network, the signal for exporting to the amplifier is tuned for the first time, and tunes net by best match
Network parameter tunes the first tuning signal again.
In the present embodiment, the detection circuit includes: bidirectional coupler, sequentially connected first detecting circuit, first
Low-pass filter LPF1 and the first direct current acquisition module AD1, sequentially connected second detecting circuit, the second low-pass filter LPF2
With the second direct current acquisition module AD2, CPU arithmetic element；
Wherein, bidirectional coupler, for being coupled into reflection power coupled signal and incidence from the first tuning signal
Power coupled signal；
Sequentially connected first detecting circuit, the first low-pass filter LPF1 and the first direct current acquisition module AD1 are for adopting
Collect the reflected voltage value of the reflection power coupled signal of bidirectional coupler output；
Sequentially connected second detecting circuit, the second low-pass filter LPF2 and the second direct current acquisition module AD2 are for adopting
Collect the incident voltage value of the incident power coupled signal of bidirectional coupler output；
CPU arithmetic element is used to calculate reflection coefficient and standing-wave ratio by the reflected voltage value and incident voltage value.
In the present embodiment, the CPU arithmetic element is used to calculate by the reflected voltage value and incident voltage value anti-
Penetrate coefficient and standing-wave ratio specifically:
The ratio that reflected voltage value and incident voltage value are calculated by CPU arithmetic element is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
In the present embodiment, the tuning network includes capacitor frame and inductance frame.
Example IV
As shown in fig. 6, the present invention further provides a kind of antenna tuning units, comprising:
The signal for the signal of reception amplifier output, and is sent to tuning network by receiving module 10；
Judgment module 20, for judging whether the standing-wave ratio of first tuning signal is greater than preset threshold value；
Matching module 30 obtains best match for gradually driving tuning network when standing-wave ratio is greater than preset threshold value
Tuning network parameter；
Tuner module 40, the signal for exporting to the amplifier carry out first tuning and obtain first tuning signal, and
The first tuning signal is tuned again by best match tuning network parameter.
As shown in fig. 7, in the present embodiment, the judgment module 20 includes:
Standing wave detection unit 21, for carrying out standing wave detection to the first tuning signal in real time or periodically；
Computing unit 22, for calculating the standing-wave ratio of the standing wave by CPU arithmetic element；
Comparing unit 23, for the standing-wave ratio to be compared with preset threshold value.
In the present embodiment, be matched to most preferably, so that standing-wave ratio is more by intelligent measurement standing wave and to tuning network
Small, the energy gone out by aerial radiation is more.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of antenna tuning method, which is characterized in that the method includes the steps:
The signal of reception amplifier output, and the signal is tuned for the first time by tuning network；
Judge whether the standing-wave ratio of first tuning signal is greater than preset threshold value；
If so, gradually driving tuning network, best match tuning network parameter is obtained；
The first tuning signal is tuned again by best match tuning network parameter, and is launched from antenna；
Reflection power coupling is acquired by sequentially connected first detecting circuit, the first low-pass filter and the first direct current acquisition module
Close the reflected voltage value of signal；Mould is acquired by sequentially connected second detecting circuit, the second low-pass filter and the second direct current
The incident voltage value of block acquisition incident power coupled signal；
Wherein, the calculation method of the standing-wave ratio are as follows: the ratio of reflected voltage value and incident voltage value is calculated by CPU arithmetic element
Value is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
2. a kind of antenna tuning method according to claim 1, which is characterized in that judge the standing-wave ratio of first tuning signal
Whether being greater than preset threshold value includes:
In real time or timing carries out standing wave detection to first tuning signal；
The standing-wave ratio of the standing wave is calculated by CPU arithmetic element；
The standing-wave ratio is compared with preset threshold value.
3. a kind of antenna tuning method according to claim 2, which is characterized in that the tuning network includes capacitor frame
With inductance frame.
4. a kind of antenna tuning circuit characterized by comprising
Amplifier is tuned to first tuning signal for input signal to be amplified and output to tuning network；
Detection circuit, for judging whether the standing-wave ratio of the first tuning signal is greater than preset threshold value；If so, gradually driving
Dynamic tuning network, obtains best match tuning network parameter；
Tuning network, the signal for exporting to the amplifier is tuned for the first time, and is joined by best match tuning network
It is several that the first tuning signal is tuned again；
Wherein, the detection circuit includes: bidirectional coupler, sequentially connected first detecting circuit, the first low-pass filter and
First direct current acquisition module, sequentially connected second detecting circuit, the second low-pass filter and the second direct current acquisition module, CPU
Arithmetic element；
Wherein, bidirectional coupler, for being coupled into reflection power coupled signal and incident power from the first tuning signal
Coupled signal；
Sequentially connected first detecting circuit, the first low-pass filter and the first direct current acquisition module are for acquiring bidirectional coupler
The reflected voltage value of the reflection power coupled signal of output；
Sequentially connected second detecting circuit, the second low-pass filter and the second direct current acquisition module are for acquiring bidirectional coupler
The incident voltage value of the incident power coupled signal of output；
CPU arithmetic element is used to calculate reflection coefficient and standing-wave ratio by the reflected voltage value and incident voltage value；
Wherein, the calculation method of the standing-wave ratio are as follows: the ratio of reflected voltage value and incident voltage value is calculated by CPU arithmetic element
Value is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
5. a kind of antenna tuning circuit according to claim 4, which is characterized in that the CPU arithmetic element is for passing through
The reflected voltage value and incident voltage value calculate reflection coefficient and standing-wave ratio specifically:
The ratio that reflected voltage value and incident voltage value are calculated by CPU arithmetic element is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
6. a kind of antenna tuning circuit according to claim 4, which is characterized in that the tuning network includes capacitor frame
With inductance frame.
7. a kind of antenna tuning unit characterized by comprising
The signal for the signal of reception amplifier output, and is sent to tuning network by receiving module；
Judgment module, for judging whether the standing-wave ratio of first tuning signal is greater than preset threshold value；
Matching module obtains best match and tunes net for gradually driving tuning network when standing-wave ratio is greater than preset threshold value
Network parameter；
Tuner module, the signal for exporting to the amplifier carry out first tuning and obtain first tuning signal, and by most
Good matching tuning network parameter tunes the first tuning signal again；
Wherein, it is acquired and is reflected by sequentially connected first detecting circuit, the first low-pass filter and the first direct current acquisition module
The reflected voltage value of power coupled signal；Pass through sequentially connected second detecting circuit, the second low-pass filter and the second direct current
The incident voltage value of acquisition module acquisition incident power coupled signal；
Wherein, the calculation method of the standing-wave ratio are as follows: the ratio of reflected voltage value and incident voltage value is calculated by CPU arithmetic element
Value is reflection coefficientUtilize formulaAcquire standing-wave ratio VSWR.
8. a kind of antenna tuning unit according to claim 7, which is characterized in that the judgment module includes:
Standing wave detection unit, for carrying out standing wave detection to the first tuning signal in real time or periodically；
Computing unit, for calculating the standing-wave ratio of the standing wave by CPU arithmetic element；
Comparing unit, for the standing-wave ratio to be compared with preset threshold value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040035.7A CN105743518B (en) | 2016-01-21 | 2016-01-21 | A kind of antenna tuning method and device |
| PCT/CN2016/113747 WO2017124908A1 (en) | 2016-01-21 | 2016-12-30 | Method of tuning antenna and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040035.7A CN105743518B (en) | 2016-01-21 | 2016-01-21 | A kind of antenna tuning method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105743518A CN105743518A (en) | 2016-07-06 |
| CN105743518B true CN105743518B (en) | 2019-11-08 |
Family
ID=56246418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610040035.7A Active CN105743518B (en) | 2016-01-21 | 2016-01-21 | A kind of antenna tuning method and device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105743518B (en) |
| WO (1) | WO2017124908A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743518B (en) * | 2016-01-21 | 2019-11-08 | 努比亚技术有限公司 | A kind of antenna tuning method and device |
| CN106209272B (en) * | 2016-07-29 | 2018-11-16 | 中国电子科技集团公司第四十一研究所 | One kind is based on double detection LTE signal level closed-loop control devices and method |
| CN106301603A (en) * | 2016-10-27 | 2017-01-04 | 北京小米移动软件有限公司 | Standing-wave ratio control method, device and electronic equipment |
| CN108199742B (en) | 2017-11-13 | 2020-12-01 | 深圳市万普拉斯科技有限公司 | Self-tuning method, self-tuning system and mobile terminal |
| CN111092295B (en) * | 2019-12-16 | 2023-04-07 | 闻泰通讯股份有限公司 | Antenna, antenna adjusting method, terminal and storage medium |
| CN113498097B (en) * | 2020-04-01 | 2023-04-14 | 成都鼎桥通信技术有限公司 | Standing wave warning method and equipment suitable for small base station piggyback antenna scene |
| CN112235014B (en) * | 2020-10-13 | 2022-05-17 | Oppo广东移动通信有限公司 | Adjustment method, device, electronic device and storage medium of radio frequency circuit |
| CN112566297B (en) * | 2020-12-07 | 2021-12-07 | 清华四川能源互联网研究院 | Plasma light source driving system and method |
| CN113703606B (en) * | 2021-08-24 | 2025-02-18 | 维沃移动通信有限公司 | A control method, device, electronic device and readable storage medium |
| CN114325331B (en) * | 2021-12-30 | 2024-08-23 | 北京航天测控技术有限公司 | Circuit, method and system for measuring direct current parameters |
| CN114665906A (en) * | 2022-01-26 | 2022-06-24 | 浙江天璇智控科技有限公司 | Intelligent beacon host |
| CN115548682B (en) * | 2022-11-30 | 2023-03-14 | 成都天锐星通科技有限公司 | Phased array antenna and electronic equipment |
| CN120090650A (en) * | 2025-04-24 | 2025-06-03 | 南京汉瑞微波通信有限公司 | An antenna tuning system suitable for medium wave |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938904A (en) * | 2011-08-15 | 2013-02-20 | 中兴通讯股份有限公司 | Standing-wave ratio detecting method, device and base station |
| CN103731167A (en) * | 2013-12-20 | 2014-04-16 | 天津光电通信技术有限公司 | Method for rapidly tuning impedance matching of antenna tuner |
| CN105009370A (en) * | 2013-03-06 | 2015-10-28 | K.M.W.株式会社 | Apparatus for tuning voltage standing wave ratio of base station system in wireless communication network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743518B (en) * | 2016-01-21 | 2019-11-08 | 努比亚技术有限公司 | A kind of antenna tuning method and device |
-
2016
- 2016-01-21 CN CN201610040035.7A patent/CN105743518B/en active Active
- 2016-12-30 WO PCT/CN2016/113747 patent/WO2017124908A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938904A (en) * | 2011-08-15 | 2013-02-20 | 中兴通讯股份有限公司 | Standing-wave ratio detecting method, device and base station |
| CN105009370A (en) * | 2013-03-06 | 2015-10-28 | K.M.W.株式会社 | Apparatus for tuning voltage standing wave ratio of base station system in wireless communication network |
| CN103731167A (en) * | 2013-12-20 | 2014-04-16 | 天津光电通信技术有限公司 | Method for rapidly tuning impedance matching of antenna tuner |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017124908A1 (en) | 2017-07-27 |
| CN105743518A (en) | 2016-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105743518B (en) | A kind of antenna tuning method and device | |
| CN104967744B (en) | Adjust the method and device of terminal parameter | |
| CN105101173A (en) | Multi-data-channel-based data loading apparatus and method | |
| CN104967810A (en) | Call mode conversion method and terminal device | |
| CN105188101A (en) | Network switching device and method | |
| CN105101317A (en) | Network switching device and method | |
| CN104902448B (en) | Follow the trail of the method and system of mobile terminal | |
| CN105306631B (en) | A kind of antenna and mobile terminal | |
| CN104935739A (en) | Audio and video application control method and device | |
| CN105188098A (en) | Mobile terminal network switching apparatus and network switching method | |
| CN105718071A (en) | Terminal and method for recommending associational words in input method | |
| CN105357593A (en) | Method, device and system for uploading video | |
| CN105721002A (en) | Terminal filtering method, system and device and filtering terminal | |
| CN104967573A (en) | Data traffic monitoring method and terminal | |
| CN104981030A (en) | Network connection control method and device | |
| CN104993180A (en) | Terminal charging method and device | |
| CN105100421A (en) | Call control method and call control device | |
| CN105100412A (en) | Method and device for eliminating terminal data | |
| CN105764085A (en) | Abnormal electricity consumption detection method and terminal | |
| CN104968027A (en) | Wi-Fi control method and apparatus | |
| CN105101325A (en) | Speech switching method, terminal, server and system | |
| CN105120070A (en) | Methods and terminal for playing music during call | |
| CN104918308A (en) | Method, apparatus and system for saving terminal power | |
| CN104811399A (en) | Method and device for controlling network data flow | |
| CN105357362A (en) | Mobile terminal control method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |