CN102412913B - A kind of antenna debugging method testing system and communication terminal - Google Patents
A kind of antenna debugging method testing system and communication terminal Download PDFInfo
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- CN102412913B CN102412913B CN201110327104.XA CN201110327104A CN102412913B CN 102412913 B CN102412913 B CN 102412913B CN 201110327104 A CN201110327104 A CN 201110327104A CN 102412913 B CN102412913 B CN 102412913B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
-
- 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
-
- 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
Abstract
The invention discloses the antenna debugging method of a kind of communication terminal, wherein, in this communication terminal, first emission source connects duplexer through the first matching network, second emission source connects this duplexer through the second matching network, duplexer connects antenna through antenna matching network, this antenna debugging method includes: the outfan of the first emission source is connected to vector network analyzer, vector network analyzer is utilized to test the outfan of the first emission source to the first load characteristic between antenna, the matching value of this first matching network is adjusted according to this first load characteristic.The present invention open a kind of test system further.By above disclosure, technical scheme provided by the present invention can obtain the antenna performance all mated with each standard and each frequency range.
Description
Technical field
The present invention relates to mobile communication terminal field, particularly relate to a kind of antenna testing system and communication terminal
Adjustment method.
Background technology
Along with the development of technology, communication terminal develops toward small and exquisite frivolous and many modellings direction, its frequency range used
More and more, and during design communication terminal, need the antenna of communication terminal is debugged so that it is energy
Correspond respectively to multiple band operation on preferable power outgoing position.
The frequency range that present communication terminal is supported gets more and more, and also develops, to sky towards small and exquisite frivolous direction simultaneously
Line design brings bigger challenge.Meanwhile, in order to promote Consumer's Experience, increase network capacity and efficiency, operator and use
The antenna performance of communication terminal is required more and more higher by family.Under the pincer attack that above-mentioned both sides requires, mobile communication
The Antenna Design of terminal is increasingly difficult.
The antenna debugging method of existing communication terminal, does passive debugging and often selects to export at antenna control switch
Mouth is debugged as the connection interface of Network Analyzer.This method is for 4G/3G (3rd-generation/4rd-
Generation, G mobile communication/forth generation mobile communication technology) for path, skip over power amplifier
The matching process of the device such as (PA, Power Amplifier) and duplexer (Duplexer), is an inaccurate method.
Generally speaking 2G corresponds to GSM (Global System of Mobile communication, global system for mobile communications) skill
Art or CDMA (Code Division Multiple Access, CDMA) technology, 3G corresponds to WCDMA (Wideband
Code Division Multiple Access, WCDMA) technology, due to 2G (2rd-generation, the second filial generation
Mobile communication technology) and the emission source (i.e. power amplifier) of 3G/4G be different, be therefore easy to occur identical work frequency
Section such as GSM850 and WCDMA BC5 (its wireless signal transmission frequency is all 824MHz～849MHz), the antenna phase used
With, but antenna index TRP (Total Radiated Power) the most different situation.
Refer to the debug point schematic diagram of the antenna debugging method of the communication terminal that Fig. 1, Fig. 1 are prior art, one
The radio frequency framework of individual typical WCDMA+GSM dual-mode terminal is illustrated in fig. 1 shown below, and it mainly includes antenna 95, duplexer module
(ASM, Antenna Switch Module) 90, transceiver 10, multiple signal receiving branch and multiple signal transmitting branch.
GSM980/850RX SAW module 20 and DCS/PCS RX SAW module 30 is two signal receiving branch, is used for connecing
Receive the radiofrequency signal that antenna 95 obtains and gated by duplexer module 90, and transceiver 10 is by port 1011 and port 1012
Obtain the radiofrequency signal processed through GSM980/850RXSAW module 20, obtained through DCS/PCS by port 1013 and port 1014
The radiofrequency signal that RX SAW module 30 processes.
GSM HB PA (GSM High Band Power Amplifier, GSM high band power amplifier) 40 and HB MN
(High Band Match Network, high band matching network) 41 is a GSM signal transmitting branch, and transceiver 10 passes through
The GSM high frequency band signal that port 1015 sends sends to GSM HB PA 40 and HB MN 41, GSM HB PA 40 and HB MN41
GSM high frequency band signal carrying out power amplification respectively and net mate processes, GSM high frequency band signal after treatment is through antenna
Sent by antenna 95 after switch module 90 gating.
And GSM LB PA (GSM Low Band Power Amplifier, GSM low-frequency range power amplifier) 50 and LB
MN (Low Band Match Network, low-frequency range matching network) 51 is another GSM signal transmitting branch, and transceiver 10 leads to
Cross the GSM low-band signal that port 1016 sends to send to GSM LB PA 50 and LB MN 51, GSM HB PA 50 and HB
GSM low-band signal carries out MN51 power amplification respectively and net mate processes, GSM low-band signal warp after treatment
Sent by antenna 95 after duplexer module 90 gating.
Further, WCDMA BC1 PA (WCDMA frequency range 1 power amplifier) 60, W MN1 (WCDMA matching network) 61, duplex
Device 62 and DPX MN (Duplexer Match Network, diplexer matching system) 63 is that a WCDMA signal is launched/connect
Revenue and expenditure road, for launching or receive frequency range 1 signal of WCDMA, wherein, transceiver 10 sends frequency range 1 signal by port 1019,
WCDMA BC1 PA 60, W MN1 61 and DPX MN 63 carry out power amplification and net mate to frequency range 1 signal respectively
Processing, frequency range 1 signal after treatment is launched by antenna 95 after duplexer module 90 gates.Wherein, duplexer 62
Can be used for selection path so that transceiver 10 can be launched via antenna 95 by frequency range 1 signal that port 1019 sends, or
The WCDMA signal of correspondence can be obtained from antenna 95 by port 1017.
Similarly, transceiver 10 produces frequency range 2 signal and the frequency range 5 of WCDMA respectively by port 1022 and port 1023
Signal, obtains, by port 1017 and port 1018, frequency range 2 signal and frequency range 5 signal that antenna 95 receives from the external world respectively, because of
This, port 1022 and port 1023 corresponding two WCDMA signal transmitting branches respectively, by port 1017 and port 1018 difference
Corresponding two WCDMA signal receiving branch, the most above-mentioned WCDMA signal transmitting/receiving branch and above-mentioned frequency range 1 signal pair
The framework of the WCDMA signal transmitting/receiving branch answered is completely the same, does not repeats in this.
It addition, be more provided with radio frequency signal connector (RF Connector) 92 between antenna and duplexer module 90
With antenna matching network (ANT MN, Antenna Match Network) 94, it is respectively used to couple multiple from various information source
Signal and this signal is carried out antenna match.
GSM signal and WCDMA signal are by different branch as seen from Figure 1, the most all by duplexer mould
The output of all of signal is connected on antenna 95 by group 90.Therefore, though the working frequency range of signal identical (such as GSM850 and
WCDMA BC5 transmitting is all operated in 824-849MHz, or GSM1900 and WCDMA BC2 transmitting is all operated in 1850-
1910MHz), and use same antenna 95 to launch, but owing to its signal is different, therefore its emission source (can
It is interpreted as in each branch road the power amplifier arranged) it is all different.
Similarly, the radio frequency of the terminal such as other bimodulus or multimode terminal such as CDMA2000+GSM or LTE+WCDMA+GSM
Framework is also similar.As long as similar frequency bands, but standard is different, and its radiofrequency signal will be launched from different emission sources
Come, converge on antenna through duplexer.
The antenna debugging method of prior art is generally divided into two steps, first can carry out passive debugging, i.e. at duplexer mould
Between group 90 and antenna matching network 94, an optional position (such as end points 93) is welded with one end of a RF cable (radio frequency line),
Then the other end of this radio frequency line is connected on vector network analyzer (VNA, Vector Network Analyzer).Root
The shape of the load characteristic debugging antenna 95 measured according to vector network analyzer and antenna matching network 94 so that antenna 95 humorous
The frequency spectrum and bandwidth that shakes meets requirement.General on the premise of passive, the parameter measured by vector network analyzer has the anti-of antenna
Penetrate coefficient (S11), voltage standing wave ratio (VSWR, Voltage Standing Wave Ratio), antenna efficiency, antenna load etc.
Deng.
(WCDMA BC5 PA hereafter it is expressed as with the power amplifier 80 on the WCDMA signal transmitting branch shown in Fig. 1
80) as a example by, please with further reference to Fig. 2 and Fig. 3, Fig. 2 is the load of the WCDMA BC5 PA 80 of the communication terminal in Fig. 1
Performance plot, as in figure 2 it is shown, based on WCDMA BC5 PA 80 self character, when the outfan at WCDMA BC5 PA 80 is surveyed
The antenna load gone out is when the third quadrant of Randy Smyth circle diagram, and WCDMA BC5 PA80 can export best power, and Fig. 3 is
The sky of the WCDMA BC5 PA 80 of the communication terminal after the antenna debugging method of the communication terminal of employing prior art
Line impedence characteristic curve, owing to prior art is only tested on end points 93, can not according to the adjustment that test result is made
Making WCDMA BC5 PA 80 be operated in optimum position, therefore the antenna impedance characteristic curve shown in Fig. 3 is not shown in Fig. 2
On optimum position, therefore TRP (Total Radiated Power, the antenna index) parameter in test result can not meet requirement.
Please with further reference to Fig. 4, Fig. 4 is the antenna after the antenna debugging method of the communication terminal using prior art
VSWR (Voltage Standing Wave Ratio, the voltage standing wave ratio) curve of 95, as shown in Figure 4, it is in different frequency ranges
Can send shake, therefore the VSWR parameter in test result can not meet requirement.
Further, due to the terminal shown in Fig. 1 support simultaneously GSM850 (corresponding to GSM LB PA50 place branch road) and
Two kinds of standards of WCDMA BC5 (corresponding to WCDMA BC5 PA 60 place branch road), its working frequency range is all 824MHz-849MHz,
As shown in table 1, in the case of using same antenna 95, the TRP performance of GSM850 is fine, and the poor-performing of WCDMA.
Table 1:
| Low CH TRP | Mid CH TRP | Hi CH TRP | |
| GSM850 | 28.6 | 28.4 | 28.2 |
| Band5 | 17.1 | 18.8 | 18.8 |
And existing method can only the performance (such as moving antenna 95 to low frequency) promoting antenna 95 simply improve by force
The TRP of Band5.But so, the TRP of GSM850 will be the highest, bring Specific Absorption Rate (SAR,
Specific absorption rate) and Hearing Aids Compatibility (HAC, hearing aid compatibility) problem.Antenna is partial to low simultaneously
Frequently, its high frequency performance can decline, and this is a contradiction.
Therefore, in sum, existing method brings problems with:
1. it not to be connected with real emission source outfan due to one end of radio frequency line, therefore this end can not reflect each mould
The truth of antenna under formula, therefore, existing adjustment method has certain blindness, and not enough for antenna headroom, difficulty is relatively
The existing method of big project is inconvenient to debug and even can be misled debugging.
2., under existing mode, adjust antenna matching network or antenna pattern all can affect all of frequency range and standard,
But in most cases, it is desirable to only adjust one of them frequency range under certain pattern, existing mode tends not to meet this
Individual requirement.
Therefore, a kind of antenna debugging method testing system and communication terminal need to be provided, to solve the problems referred to above.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides a kind of antenna adjustment side testing system and communication terminal
Method, the antenna performance all mated with each standard and each frequency range with acquisition.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of communication terminal
Antenna debugging method, wherein, in communication terminal, the first emission source through first matching network connect duplexer, second
Emission source connects duplexer through the second matching network, and duplexer connects antenna, antenna debugging method through antenna matching network
Including: the outfan of the first emission source is connected to vector network analyzer, utilizes vector network analyzer test the first transmitting
The outfan in source is to the first load characteristic between antenna；The matching value of the first matching network is adjusted according to the first load characteristic.
Wherein, in adjust the step of matching value of the first matching network according to the first load characteristic, obtain the first transmitting
The load characteristic figure in source, and judge the best power outgoing position on load characteristic figure, adjust the matching value of the first matching network
So that the first emission source is operated on best power outgoing position.
Wherein, in adjust the step of matching value of the first matching network according to the first load characteristic, adjust the first coupling
The method of the matching value of network is for carry out at series inductance, series capacitance, shunt inductance or shunt capacitance the first matching network
Reason.
Wherein, antenna debugging method farther includes: the outfan of the second emission source is connected to vector network analyzer,
Vector network analyzer is utilized to test the outfan of the second emission source to the second load characteristic between antenna；According to the second load
Characteristic adjusts the matching value of the second matching network.
Wherein, in adjust the step of matching value of the second matching network according to the second load characteristic, obtain the second transmitting
The load characteristic figure in source, and judge the best power outgoing position on load characteristic figure, adjust the matching value of the second matching network
So that the second emission source is operated on best power outgoing position.
Wherein, in adjust the step of matching value of the second matching network according to the second load characteristic, adjust the second coupling
The method of the matching value of network is for carry out at series inductance, series capacitance, shunt inductance or shunt capacitance the second matching network
Reason.
Wherein, the first emission source is the first power amplifier, and the second emission source is the second power amplifier.
Wherein, the signal that the first emission source is exported is WCDMA signal, and the signal that the second emission source is exported is GSM letter
Number.
For solving above-mentioned technical problem, the present invention further provides a kind of test system, including:
Communication terminal, including the first emission source, the first matching network, the second emission source, the second matching network, antenna
Matching network, duplexer and antenna, the first emission source connects duplexer through the first matching network, and the second emission source is through the
Two matching networks connect duplexer, and duplexer connects antenna through antenna matching network；
Vector network analyzer, the outfan of the first emission source is connected to vector network analyzer, vector network analyzer
Test the outfan of the first emission source to the first load characteristic between antenna, wherein, the matching value of the first matching network according to
First load characteristic adjusts.
Wherein, the outfan of the second emission source is connected to vector network analyzer, utilizes vector network analyzer test the
The outfan of two emission sources is to the second load characteristic between antenna, and wherein, the matching value of the second matching network is negative according to second
Load characteristic adjusts.
The invention has the beneficial effects as follows: being different from the situation of prior art, technical scheme provided by the present invention is by first
The outfan of emission source is connected to vector network analyzer, utilizes vector network analyzer for corresponding to single frequency band or pattern
Antenna carry out load characteristic test, with obtain the first emission source being directed to single frequency band or pattern outfan and antenna it
Between load characteristic, and adjust the first matching network corresponding to the first emission source according to load characteristic so that the first emission source
Match with antenna, it is thus achieved that the antenna performance most preferably mated with the first emission source, thus optimize the performance of antenna.
Accompanying drawing explanation
Fig. 1 is the debug point schematic diagram of the antenna debugging method of the communication terminal of prior art；
Fig. 2 is the load characteristic figure of the WCDMA BC5 PA 80 of the communication terminal in Fig. 1；
Fig. 3 is the VSWR curve of the antenna 95 after the antenna debugging method of the communication terminal using prior art；
Fig. 4 is the WCDMA of the communication terminal after the antenna debugging method of the communication terminal using prior art
The antenna impedance characteristic curve of BC5 PA 80；
Fig. 5 is the debug point signal of the antenna debugging method of communication terminal according to one preferred embodiment of the present invention
Figure；
Fig. 6 is the flow chart of the antenna debugging method of communication terminal according to one preferred embodiment of the present invention；
Fig. 7 is that the movement after the antenna debugging method using communication terminal according to one preferred embodiment of the present invention is led to
The antenna impedance characteristic curve of the WCDMA BC5 PA 80 of news terminal；
Fig. 8 is the antenna debugging method aft antenna 95 using communication terminal according to one preferred embodiment of the present invention
VSWR curve.
Detailed description of the invention
It is the antenna debugging method of communication terminal according to one preferred embodiment of the present invention referring firstly to Fig. 5, Fig. 5
Debug point schematic diagram, as it is shown in figure 5, in the present embodiment, the communication terminal structure used is complete phase with described in Fig. 1
With, it is the radio frequency framework of typical WCDMA+GSM dual-mode terminal.
In the present embodiment, choose respectively as GSM HB PA 40, GSM LB PA 50, WCDMA BC1 PA 60,
The end points 43 of WCDMA BC2 PA 70 or WCDMA BC5 PA 80 constant power amplifier out, end points 53, end points 64, end points
74 or end points 84 as the pad welded mutually with one end of radio frequency line, and by the other end of radio frequency line and vector network analyzer
Connect, thus utilize vector network analyzer directly obtain GSM HB PA40, GSM LB PA50, WCDMA BC1 PA 60,
The corresponding parameter of WCDMA BC2 PA 70 or WCDMA BC5 PA 80 constant power amplifier out, these parameters include: sky
The reflection coefficient (S11) of line, voltage standing wave ratio (VSWR, Voltage Standing Wave Ratio), antenna efficiency etc..
If by GSM HB PA 40, GSM LB PA 50, WCDMA BC1 PA 60, WCDMABC2 PA 70 or WCDMA
One in BC5 PA 80 constant power amplifier is as the first emission source, and vector network analyzer tests out the first emission source
Outfan is to the reflection coefficient (S11) of the antenna between antenna 95, voltage standing wave ratio (VSWR, Voltage Standing Wave
Ratio), the parameter such as antenna efficiency, antenna load, wherein antenna load is that the outfan of the first emission source is between antenna 95
First load characteristic of antenna.
Wherein, for the branch road of GSM HB PA 40 place, HB MN 41 can as GSM HB PA 40 and antenna 95 it
Between matching network；For the branch road of GSM LB PA 50 place, HB MN 51 can as GSM HB PA 50 and antenna 95 it
Between matching network；For the branch road of WCDMA BC1 PA 60 place, WNM1 61, duplexer 62 and DPX MN 63 can make
For the matching network between WCDMA BC1 PA 60 and antenna 95；For the branch road of WCDMA BC2 PA70 place, WNM1 71,
Duplexer 72 and DPX MN 73 can be as the matching network between WCDMA BC2 PA 70 and antenna 95；With regard to WCDMA BC5
For the branch road of PA 80 place, WNM1 81, duplexer 82 and DPX MN 83 can as WCDMABC5 PA 80 and antenna 95 it
Between matching network.
In the present embodiment, adjust the matching value of the first matching network according to above the first measured load characteristic, its
In the first matching network be the matching network that the first emission source is corresponding, if the first emission source is WCDMA BC5 PA 80, then first
Matching network is WNM1 81, duplexer 82 and DPX MN 83.
Its method of adjustment is as follows: after getting the first load characteristic, obtains the load characteristic figure of the first emission source (such as figure
2, it is the load characteristic figure of WCDMA BC5 PA 80), and judge that the best power of the first emission source on load characteristic figure is defeated
Out position, wherein, for WCDMA BC5PA 80, when the antenna load measured by the outfan at WCDMA BC5 PA 80
When the third quadrant of Randy Smyth circle diagram, WCDMA BC5 PA 80 can export best power.Therefore, adjustable first
The matching value of distribution network so that the first emission source be operated on best power outgoing position (i.e. the 3rd of Randy Smyth circle diagram as
Limit).
Specifically, adjust the first matching network matching value method for the first matching network carried out series inductance,
Series capacitance, shunt inductance or shunt capacitance process, and wherein, series capacitance can make the resistance circles such as antenna load meeting edge to moving down
Dynamic, shunt inductance can make the conductance circles such as antenna load meeting edge move up, and shunt capacitance can make the electricity such as antenna load meeting edge
Rounding moves down.For example, if choosing WCDMA BC5 PA 80 as the first emission source, then the first coupling of its correspondence
Network is WNM1 81, duplexer 82 and DPX MN 83, by the outfan of one end of radio frequency line with WCDMA BC5 PA 80 is
(end points 94) connects, and the other end of radio frequency line is connected to vector network analyzer, can obtain WCDMA from vector network analyzer
Antenna load between BC5 PA 80 and antenna 95, the i.e. first load characteristic, obtain the load characteristic of WCDMA BC5 PA 80
Figure (i.e. Fig. 2), it is judged that the best power outgoing position of the WCDMA BC5 PA 80 on load characteristic figure, wherein, when at WCDMA
Antenna load measured by the outfan of BC5 PA 80 is when the third quadrant of Randy Smyth circle diagram, and WCDMA BC5 PA 80 can
Export best power, therefore, if the antenna load that vector network analyzer is measured is not at third quadrant, then can be by adjusting the
One matching network makes antenna load that vector network analyzer measures at the third quadrant of the Smith chart shown in Fig. 2
On, wherein, method of adjustment is: make antenna load along the resistance circle such as shown in Fig. 2 in W MN3 81 or DPX MN 83 series inductance
Move up；WMN3 81 or DPX MN 83 series capacitance make antenna load along shown in Fig. 2 etc. resistance circle move down；
W MN3 81 or DPX MN 83 shunt inductance make antenna load along shown in Fig. 2 etc. conductance circle move up；At W MN3
81 or DPX MN 83 shunt capacitances make antenna load along shown in Fig. 2 etc. conductance circle move down.
Wherein, the action such as series inductance, series capacitance, shunt inductance and shunt capacitance can be at HB MN 41, LB MN
51, the position such as W MN1 61, DPX MN 63, W MN1 71, DPXMN 73, W MN1 81 or DPX MN83 is carried out, right to adjust
Answer the matching value of matching network.
Refer to the stream that Fig. 6, Fig. 6 are the antenna debugging methods of communication terminal according to one preferred embodiment of the present invention
Cheng Tu.As shown in Figure 6, the antenna debugging method of the communication terminal of the present invention comprises the following steps:
Step 101, is connected to vector network analyzer by the outfan of the first emission source, utilizes vector network analyzer to survey
Try the outfan of the first emission source to the first load characteristic between antenna.Wherein, the first emission source is the first power amplifier.
Further, the signal that the first emission source is exported can be WCDMA signal or GSM signal.
First emission source described herein can be GSM HB PA 40, GSM LB PA 50, WCDMA BC1 PA 60,
WCDMA BC2 PA 70 or WCDMA BC5 PA 80, its frequency range that can test according to actual needs is chosen.Vector network
Analyser directly obtain GSM HB PA 40, GSM LB PA 50, WCDMA BC1 PA 60, WCDMA BC2 PA 70 or
The outfan of WCDMA BC5 PA 80 is to the first load characteristic between antenna.
Step 102, adjusts the matching value of the first matching network according to the first load characteristic.In a step 102, getting
After first load characteristic, specifically can obtain load characteristic figure (wherein, the load spy of the first emission source of the first emission source further
Property figure can by the first emission source manufacturer provide, maybe can be obtained by many experiments, it is prior art, does not goes to live in the household of one's in-laws on getting married in this
State), and judge the best power outgoing position of the first emission source on load characteristic figure, adjust the matching value of the first matching network
So that the first emission source is operated on best power outgoing position.Specifically, the matching value of the first matching network is adjusted
Method processes for the first matching network carries out series inductance, series capacitance, shunt inductance or shunt capacitance, wherein, and series electrical
Appearance can make the resistance circles such as antenna load meeting edge move down, and shunt inductance can make the conductance circles such as antenna load meeting edge upwards move
Dynamic, shunt capacitance can make the conductance circles such as antenna load meeting edge move down.
Referring to Fig. 7, Fig. 7 is the antenna debugging method using communication terminal according to one preferred embodiment of the present invention
After the antenna impedance characteristic curve of WCDMA BC5 PA 80 of communication terminal, as shown in Figure 7, from figure 7 it can be seen that
Antenna load converges to third quadrant, meets the load characteristic requirement of power amplifier.And from fig. 5, it can be seen that this tune
Method for testing and GSM and other WCDMA frequency ranges do not have any relation, do not interfere with the antenna performance of these frequency ranges.Actual test
Income value such as table 2:
Table 2:
| Band5 | 19 | 19.7 | 19.6 |
Referring to Fig. 8, Fig. 8 is the antenna debugging method using communication terminal according to one preferred embodiment of the present invention
The VSWR curve of aft antenna 95, as it can be observed in the picture that for the VSWR curve measured by the prior art shown in Fig. 4, use
After the antenna debugging method of the present invention, the jitter phenomenon of the VSWR curve of antenna 95 is significantly suppressed.
And in the alternative of the present invention, it is possible to choosing another power amplifier is the second emission source, and first launches
Source the first matching network connects duplexer, and the second emission source connects duplexer, duplexer warp through the second matching network
Antenna matching network connects antenna, the outfan of the second emission source is connected to vector network analyzer, utilizes vector network to divide
Analyzer tests the outfan of the second emission source to the second load characteristic between antenna, and adjusts second according to the second load characteristic
The matching value of matching network.Wherein, the second emission source can be the second power amplifier, concretely in addition to above-mentioned first emission source
GSM HB PA40, GSM LB PA50, WCDMA BC1 PA60, WCDMA BC2 PA70 and WCDMA BC5 PA 80 in
Any one.Further, the signal that the first emission source is exported can be WCDMA signal or GSM signal.
Furthermore, it is possible to by the 3rd emission source, the 4th emission source ... (quantity of emission source depends on to wait multiple emission source
The set-up mode of communication terminal, it corresponds to GSM HB PA40, GSMLB PA 50, WCDMA BC1 PA 60, WCDMA
BC2 PA 70 and WCDMA BC5PA 80 constant power amplifier) sequentially it is respectively connecting to vector network analyzer, with the most right
The matching value of the matching network between each emission source and antenna is adjusted.
In adjust the step of matching value of the second matching network according to the second load characteristic, the second emission source can be obtained
Load characteristic figure, and judge the best power outgoing position on load characteristic figure, adjust the matching value of the second matching network so that
Obtain the second emission source to be operated on best power outgoing position.Adjust the method for matching value of the second matching network for second
Distribution network carries out series inductance, series capacitance, shunt inductance or shunt capacitance and processes.In like manner, according to from the 3rd emission source, the 4th
Emission source ... the load characteristic waiting the outfan of multiple emission source to obtain adjusts the step of the matching value of matching network with upper
State consistent, do not repeat in this.
Communication terminal in the present embodiment supports two kinds of standards of GSM850 and WCDMA BC5, its working frequency range simultaneously
It is all 824MHz-849MHz.But in the case of same antenna, the TRP performance of GSM850 is fine, the poor-performing of WCDMA, therefore
Branch road at the place of WCDMA carries out antenna adjustment, to promote on the premise of not affecting TRP performance corresponding for GSM850
TRP performance corresponding for WCDMA.
The present invention in the passive debugging to antenna the matching network between power amplifier and duplexer and device
(can be, but not limited to duplexer) etc. also include debugging process in, will include but not limited to that the signal of the standards such as 2G, 3G and 4G is sent out
Penetrate the passive debugging of antenna of branch road separately, respectively start debugging since the outfan of the power amplifier of each transmitting branch.As long as
It is the transmitting path terminal different branch of 2G, 3G, 4G (can be, but not limited to be) that has branch, may be by these branch roads
Obtain radio-frequency match and obtain antenna performance debugging acid independent of each other.Do not affecting radio frequency and the antenna performance premise of other paths
Under, it is thus achieved that this branch road radio frequency and the optimization of antenna performance.Antenna is debugged by the matching network being originally used for conduction.Antenna
The pad conversion of passive debugging radio frequency line, is revised as the outfan of power amplifier after existing duplexer.
Similarly, technical scheme provided by the present invention is also applicable to other similar bimodulus or multimode terminals, as
The radio frequency framework of the terminals such as CDMA2000+GSM or LTE+WCDMA+GSM.
Further, please with further reference to Fig. 5, the present invention further provides a kind of test system, it includes communication terminal
With vector network analyzer (not shown), wherein, communication terminal includes the first emission source (sign), the first matching network
(sign), the second emission source (sign), the second matching network (sign), antenna matching network 94, duplexer 90 with
And antenna 95, the first emission source connects duplexer 90 through the first matching network, and the second emission source connects through the second matching network
Duplexer 90, duplexer 90 connects antenna 95 through antenna matching network 94.
The outfan of the first emission source is connected to vector network analyzer, and vector network analyzer tests the first emission source
Outfan is to the first load characteristic between antenna 95, and wherein, the matching value of the first matching network is adjusted according to the first load characteristic
Whole.
Further, the outfan of the second emission source is connected to vector network analyzer, utilizes vector network analyzer test the
The outfan of two emission sources is to the second load characteristic between antenna 95, and wherein, the matching value of the second matching network is according to second
Load characteristic adjusts.
Technical scheme is time under identical working frequency range different systems, antenna performance is inconsistent, it is also possible to pass through
The antenna load of the place branch road adjusting the power amplifier of different systems makes power amplifier and the antenna of different systems
Match.The outfan of the first emission source is connected to vector network analyzer by technical scheme provided by the present invention, utilizes and vows
Amount Network Analyzer carries out load characteristic test for the antenna corresponding to single frequency band or pattern, is directed to single frequency to obtain
Load characteristic between outfan and the antenna of the first emission source of section or pattern, and adjust the first emission source according to load characteristic
The first corresponding matching network so that the first emission source matches with antenna, it is thus achieved that the sky most preferably mated with the first emission source
Linearly energy, thus optimize the performance of antenna.Shown in sum up, the present invention proposes a kind of channel radio being applicable to multimode multi-frequency section
The antenna debugging method of news terminal, the acquisition that can be more prone in this way of profit is for each standard and each frequency range
Good antenna performance.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (8)
1. the antenna debugging method of a communication terminal, it is characterised in that in described communication terminal, first launches
Source the first matching network connects duplexer, and the second emission source connects described duplexer, described sky through the second matching network
Line adjustment method includes:
The outfan of described first emission source is connected to vector network analyzer, utilizes described vector network analyzer to test institute
State the first load characteristic between the outfan extremely described antenna of the first emission source；
The matching value of described first matching network is adjusted according to described first load characteristic；
In adjust the step of matching value of described first matching network according to the first load characteristic, obtain described first emission source
Load characteristic figure, and judge the best power outgoing position on described load characteristic figure, adjust described first matching network
Matching value is so that described first emission source is operated on described best power outgoing position；
In adjust the step of matching value of described first matching network according to the first load characteristic, adjust described first pair net
The method of the matching value of network is for carry out series inductance, series capacitance, shunt inductance or shunt capacitance to described first matching network
Process；
Wherein, series inductance makes the resistance circles such as antenna load edge move up, and series capacitance can make antenna load meeting edge etc.
Resistance circle moves down, and shunt inductance can make the conductance circles such as antenna load meeting edge move up, and shunt capacitance can make antenna
The conductance circles such as load meeting edge move down.
Method the most according to claim 1, it is characterised in that described antenna debugging method farther includes:
The outfan of described second emission source is connected to described vector network analyzer, utilizes described vector network analyzer to survey
Try the second load characteristic between the outfan extremely described antenna of described second emission source；
The matching value of described second matching network is adjusted according to the second load characteristic.
Method the most according to claim 2, it is characterised in that adjusting described second pair net according to the second load characteristic
In the step of the matching value of network, obtain the load characteristic figure of described second emission source, and judge on described load characteristic figure
Good power outgoing position, adjust the matching value of described second matching network so that described second emission source be operated in described most preferably
On power outgoing position.
Method the most according to claim 3, it is characterised in that adjusting described second pair net according to the second load characteristic
In the step of the matching value of network, adjust the method for matching value of described second matching network for described second matching network to be carried out
Series inductance, series capacitance, shunt inductance or shunt capacitance process.
5. according to the method described in any one of Claims 1-4, it is characterised in that described first emission source is that the first power is put
Big device, described second emission source is the second power amplifier.
6. according to the method described in any one of Claims 1-4, it is characterised in that the signal that described first emission source is exported
For WCDMA signal, the signal that described second emission source is exported is GSM signal.
7. a test system, it is characterised in that including:
Communication terminal, including the first emission source, the first matching network, the second emission source, the second matching network, antenna match
Network, duplexer and antenna, described first emission source connects described duplexer through described first matching network, and described the
Two emission sources connect described duplexer through described second matching network；
Vector network analyzer, the outfan of described first emission source is connected to described vector network analyzer, described vector net
Network analyser tests the first load characteristic between the outfan extremely described antenna of described first emission source, wherein, described first
The matching value of matching network adjusts according to described first load characteristic；
Adjust the matching value of described first matching network according to the first load characteristic, obtain the load characteristic of described first emission source
Figure, and judges the best power outgoing position on described load characteristic figure, adjust the matching value of described first matching network so that
Obtain described first emission source to be operated on described best power outgoing position；
Adjust the matching value of described first matching network according to the first load characteristic, adjust the matching value of described first matching network
Described first matching network carries out series inductance, series capacitance, shunt inductance or shunt capacitance process；
Wherein, series inductance makes the resistance circles such as antenna load edge move up, and series capacitance can make antenna load meeting edge etc.
Resistance circle moves down, and shunt inductance can make the conductance circles such as antenna load meeting edge move up, and shunt capacitance can make antenna
The conductance circles such as load meeting edge move down.
Test system the most according to claim 7, it is characterised in that the outfan of described second emission source is connected to described
Vector network analyzer, utilizes described vector network analyzer to test between the outfan extremely described antenna of described second emission source
The second load characteristic, wherein, the matching value of described second matching network according to described second load characteristic adjust.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110327104.XA CN102412913B (en) | 2011-10-24 | 2011-10-24 | A kind of antenna debugging method testing system and communication terminal |
| PCT/CN2012/081609 WO2013060209A1 (en) | 2011-10-24 | 2012-09-19 | Test system and antenna commissioning method for mobile communication terminal |
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| CN201110327104.XA CN102412913B (en) | 2011-10-24 | 2011-10-24 | A kind of antenna debugging method testing system and communication terminal |
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| CN102412913B (en) * | 2011-10-24 | 2016-09-14 | 惠州Tcl移动通信有限公司 | A kind of antenna debugging method testing system and communication terminal |
| US9312889B2 (en) * | 2012-11-27 | 2016-04-12 | Aviacomm Inc. | Tunable wideband RF transmitter interface |
| CN104198824B (en) * | 2014-09-05 | 2017-05-03 | 中国科学院电子学研究所 | Measurement method for differential antenna |
| CN105811054B (en) * | 2016-05-31 | 2018-09-07 | 广东欧珀移动通信有限公司 | Debug the convergent method and device of duplexer |
| CN106130664B (en) * | 2016-06-21 | 2018-07-20 | 广东欧珀移动通信有限公司 | The antenna test method and test system of mobile terminal |
| CN106685448A (en) * | 2017-01-20 | 2017-05-17 | 江苏智联天地科技有限公司 | Cellphone radio-frequency front-end transmission link power consumption and ACLR optimal matching method |
| CN108964695B (en) * | 2018-07-18 | 2021-06-08 | Oppo广东移动通信有限公司 | Radio frequency circuit debugging method and related device |
| CN109041096B (en) * | 2018-07-18 | 2021-04-13 | Oppo广东移动通信有限公司 | Radio frequency circuit simulation method and related device |
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| CN1534698A (en) * | 2002-12-30 | 2004-10-06 | 摩托罗拉公司 | Distribution capacitor in high density application |
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| US6816711B2 (en) * | 2001-11-27 | 2004-11-09 | Qualcomm Incorporated | GPS equipped mobile phone with single shared antenna |
| US20100253435A1 (en) * | 2004-03-18 | 2010-10-07 | Ikuroh Ichitsubo | Rf power amplifier circuit utilizing bondwires in impedance matching |
| CN102412913B (en) * | 2011-10-24 | 2016-09-14 | 惠州Tcl移动通信有限公司 | A kind of antenna debugging method testing system and communication terminal |
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| WO2013060209A1 (en) | 2013-05-02 |
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