CN107786286A - The apparatus and method calibrated to the antenna of wireless terminal - Google Patents
The apparatus and method calibrated to the antenna of wireless terminal Download PDFInfo
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- CN107786286A CN107786286A CN201610784008.0A CN201610784008A CN107786286A CN 107786286 A CN107786286 A CN 107786286A CN 201610784008 A CN201610784008 A CN 201610784008A CN 107786286 A CN107786286 A CN 107786286A
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- 238000012360 testing method Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 4
- 238000009966 trimming Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
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- 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
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- 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
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- Computer Networks & Wireless Communication (AREA)
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- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The apparatus and method that a kind of antenna to wireless terminal is calibrated are provided, including：Processor, adjustment parameter is provided to adjustable impedance；Adjustable impedance, adjustment parameter is received from processor, and the adjustment parameter based on reception changes the impedance parameter of itself；Impedance factor determiner, it is determined that under the impedance parameter antenna input echo impedance factor；Controller, judge whether the input echo impedance factor of the antenna meets predetermined condition, wherein, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition, controller updates the adjustment parameter of adjustable impedance, and processor provides the adjustment parameter after renewal to adjustable impedance.According to the apparatus and method, the antenna of wireless terminal can be calibrated under the conditions of complete machine, by this calibrating mode, can not only improve the precision of calibration, also reduce antenna is influenceed by follow-up mobile telephone production process.
Description
Technical field
This invention relates generally to the collimation technique of antenna.More particularly, it is related to a kind of antenna to wireless terminal
The apparatus and method calibrated.
Background technology
With the fast development of mobile communication technology especially wireless communication technology, various wireless terminal devices should
Transport and give birth to.Important component of the antenna as wireless terminal device, its characteristic directly decide whole communication link system
Performance is good and bad.
The performance of antenna is tested in the prior art, generally qualified antenna will be examined to be used for wireless terminal device
In follow-up making, the antenna of disqualified upon inspection is eliminated, and this mode causes the waste of antenna, adds manufacturing cost.This
Outside, antenna may be influenceed by the miscellaneous part of wireless terminal device or production procedure so that antenna performance is unable to reach
Expected Results.
The content of the invention
The present invention exemplary embodiment be to provide the apparatus and method that a kind of antenna to wireless terminal is calibrated,
To overcome the mobile phone complete machine manufacturing process of existing metal fuselage to fusion the antenna on phone housing has a great influence the problem of.
According to the one side of the exemplary embodiment of the present invention, there is provided what a kind of antenna to wireless terminal was calibrated sets
It is standby, including：Processor, adjustment parameter is provided to adjustable impedance；Adjustable impedance, adjustment parameter is received from processor, and be based on connecing
The adjustment parameter of receipts changes the impedance parameter of itself；Impedance factor determiner, it is determined that under the impedance parameter antenna input
Echo impedance factor；Controller, judges whether the input echo impedance factor of the antenna meets predetermined condition, wherein, work as institute
When stating the input echo impedance factor of antenna and being unsatisfactory for predetermined condition, controller updates the adjustment parameter of adjustable impedance, processor
The adjustment parameter after renewal is provided to adjustable impedance.
Alternatively, the adjustable impedance is adjustable condenser, and the impedance parameter is capacitance.
Alternatively, one end of adjustable impedance is connected to the feed point of antenna, and impedance factor determiner is from the another of adjustable impedance
End determines the input echo impedance factor of the antenna under the impedance parameter.
Alternatively, impedance factor determiner includes：Signal generator, sent out via the other end of adjustable impedance to antenna
Penetrate test signal, and the echo-signal that is returned from antenna is received via described one end of adjustable impedance；Measuring appliance, determine the survey
The power of trial signal and the power of echo-signal；Calculator, the power of power and echo-signal based on the test signal are true
Determine the input echo impedance factor of antenna.
Alternatively, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition, the controller is configured
For：The desired impedance of input echo impedance factor and antenna based on the antenna determines the present impedance of antenna, it is determined that described
Position relationship of the present impedance of antenna in the antenna impedance Smith chart prestored between the desired impedance of antenna,
Present impedance based on the antenna is in the antenna impedance Smith chart prestored between the desired impedance of antenna
Position relationship, update the adjustment parameter of adjustable impedance.
Alternatively, one end of adjustable impedance is connected to the feed point of antenna, when the input echo impedance factor of the antenna is expired
During sufficient predetermined condition, the new feed point of the other end of adjustable impedance as antenna.
Alternatively, the impedance factor determiner divides instrument to realize by the net outside wireless terminal.
Alternatively, the controller is realized by the processor inside wireless terminal or other special chips, or,
The controller is realized by the server outside wireless terminal.
Alternatively, the predetermined condition refers to the preferable input echo impedance of the input echo impedance factor and antenna of antenna
The difference of coefficient is in the range of target offset.
A kind of another aspect according to an exemplary embodiment of the present invention, there is provided the side that antenna to wireless terminal is calibrated
Method, including：(A) adjustment parameter is provided from processor to adjustable impedance；(B) regulation is received from processor by adjustable impedance to join
Number, and the adjustment parameter based on reception changes the impedance parameter of itself；(C) determine to join in the impedance by impedance factor determiner
The input echo impedance factor of several lower antennas；(D) whether the input echo impedance factor for judging the antenna by controller meets
Predetermined condition, wherein, can resistance trimming by controller renewal when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition
Anti- adjustment parameter.
Alternatively, the adjustable resistance is adjustable condenser, and the impedance parameter is capacitance.
Alternatively, one end of adjustable impedance is connected to the feed point of antenna, and impedance factor determiner is from the another of adjustable impedance
End determines the input echo impedance factor of the antenna under the impedance parameter.
Alternatively, step (C) includes：(C1) test signal is launched to antenna via the other end of adjustable impedance, and
The echo-signal returned from antenna is received via described one end of adjustable impedance；(C2) test signal is determined by measuring appliance
The power of power and echo-signal；(C3) day is determined by the power of highway of the calculator based on the test signal and echo-signal
The input echo impedance factor of line.
Alternatively, step (D) includes：(D1) when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition,
The desired impedance of input echo impedance factor and antenna based on the antenna determines the present impedance of antenna；(D2) described in determining
Position relationship of the present impedance of antenna in the antenna impedance Smith chart prestored between the desired impedance of antenna；
(D3) present impedance based on the antenna in the antenna impedance Smith chart prestored with the desired impedance of antenna it
Between position relationship, update the adjustment parameter of adjustable impedance, and return perform step (A).
Alternatively, one end of adjustable impedance is connected to the feed point of antenna, when the input echo impedance factor of the antenna is expired
During sufficient predetermined condition, the new feed point of the other end of adjustable impedance as antenna.
Alternatively, the impedance factor determiner divides instrument to realize by the net outside wireless terminal.
Alternatively, the controller is realized by the processor inside wireless terminal or other special chips, or,
The controller is realized by the server outside wireless terminal.
Alternatively, the predetermined condition refers to the preferable input echo impedance of the input echo impedance factor and antenna of antenna
The difference of coefficient is in the range of target offset.
, can be in complete machine in the equipment that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated
Under the conditions of the antenna of wireless terminal is calibrated, by this calibrating mode, can not only improve the precision of calibration, also reduce
Antenna is influenceed by follow-up mobile telephone production process.
Brief description of the drawings
Pass through the detailed description carried out with reference to the accompanying drawing for being exemplarily illustrated embodiment, exemplary embodiment of the present
Above and other purpose will become apparent, wherein：
Fig. 1 shows the block diagram for the equipment that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated；
Fig. 2 shows the equipment middle impedance coefficient calibrated to the antenna of wireless terminal according to invention exemplary embodiment
The block diagram of determiner；
Fig. 3 shows the example of the adjustment parameter of controller renewal adjustable impedance according to an exemplary embodiment of the present invention；
Fig. 4 shows the example for the equipment that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated；
Fig. 5 shows showing according to the equipment calibrated to the antenna of wireless terminal of another exemplary embodiment of the present invention
Example；
Fig. 6 shows that the input echo impedance factor of antenna according to an exemplary embodiment of the present invention meets day during predetermined condition
The structure chart of line and adjustable impedance；
Fig. 7 shows the flow for the method that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated
Figure；
Fig. 8 shows the input echo impedance according to an exemplary embodiment of the present invention that antenna is determined by impedance factor determiner
The flow chart of the step of coefficient；
Fig. 9 show it is according to an exemplary embodiment of the present invention by controller update adjustable impedance adjustment parameter the step of
Flow chart.
Embodiment
The exemplary embodiment of the present invention is reference will now be made in detail, the example of the embodiment is shown in the drawings, wherein, phase
Same label refers to identical part all the time.The embodiment will be illustrated by referring to accompanying drawing below, to explain this hair
It is bright.
Fig. 1 shows the block diagram for the equipment that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated.
Here, as an example, the wireless terminal can be mobile communication terminal (for example, smart mobile phone), Intelligent worn device (example
Such as, intelligent watch), the equipment that is internally provided with antenna such as tablet personal computer.
As shown in figure 1, the equipment that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated includes：
Processor 100, adjustable impedance 200, impedance factor determiner 300 and controller 400.
Processor 100 is used to provide adjustment parameter to adjustable impedance 200.
Particularly, processor 100 can be connected with controller 400 in advance, be carried out when entering the antenna to wireless terminal
During the pattern of calibration, controller 400 sends the finger for providing adjustment parameter index1 to adjustable impedance 200 to processor 100
Order, processor 100 provide adjustment parameter index1 in response to the instruction to adjustable impedance 200.Here, the adjustment parameter
Index1 is determined by controller 400 according to historical experience record.In addition, as an example, the controller 400 also can directly lead to
The processor 100 or other special chips crossed inside wireless terminal realize, or, the controller 400 can be by wireless
The server of exterior of terminal is realized.
Adjustable impedance 200 is used to receive adjustment parameter index1, and the adjustment parameter based on reception from processor 100
Index1 changes the impedance parameter of itself.
Here, as an example, the adjustable impedance 200 can be adjustable condenser, the impedance parameter can be electric capacity
Value.Preferably, the adjustable impedance 200 may include the adjustable condenser of two series connection.
Particularly, in the case where the adjustable impedance 200 is adjustable condenser, the adjustable condenser can be based on connecing
The adjustment parameter of receipts changes the capacitance of itself, for example, adjustable condenser has 2000 capacitances, each capacitance is according in advance
The corresponding adjustment parameter of the matching relationship of setting, when receiving the adjustment parameter index1 of the offer of processor 100, adjustable electric
Container can be changed the capacitance of itself to the capacitance matched with adjustment parameter index1 based on the matching relationship pre-set
On；In addition, as another example, also the capacitance of itself can be changed according to the physical characteristic of adjustable condenser.
Impedance factor determiner 300 determines the input echo impedance factor of the antenna under the impedance parameter.
As an example, one end of adjustable impedance 200 is connected to the feed point of antenna, impedance factor determiner 300 is from can resistance trimming
Anti- 200 other end determines the input echo impedance factor of the antenna under the impedance parameter.Below, Fig. 2 will be combined in detail
Illustrate the block diagram in above-mentioned this attachment structure middle impedance coefficient determiner 300.
Fig. 2 shows the equipment middle impedance system that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated
The block diagram of number determiner 300.
As shown in Fig. 2 the impedance factor determiner 300 includes signal generator 310, measuring appliance 320 and calculator
330。
After adjustment parameter index1 of the adjustable impedance 200 based on reception changes the impedance parameter of itself, signal generator
310 launch test signal via the other end of adjustable impedance 200 to antenna, and via described one end of adjustable impedance 200
Receive the echo-signal returned from antenna, that is to say, that the test signal can be transmitted into antenna via adjustable impedance 200, institute
Signal generator 310 can be returned to via adjustable impedance 200 by stating echo-signal.Here, the test signal refers to signal
Pumping signal caused by device 310, the echo-signal refer to the pumping signal via adjustable impedance 200 reach antenna after by day
The signal that line reflection is returned.
Measuring appliance 320 determines the power of test signal and the power of echo-signal.
The power of power and echo-signal of the calculator 330 based on the test signal determines the input echo impedance of antenna
Coefficient.Particularly, the input echo impedance factor of the antenna for test signal power and echo-signal power ratio
Value.Because the test signal via adjustable impedance 200 is transmitted into antenna, the echo-signal returns via adjustable impedance 200
To signal generator 310, therefore, test signal and echo-signal receive the influence of adjustable impedance 200.
In addition, as an example, the impedance factor determiner 300 can also divide instrument come real by the net outside wireless terminal
It is existing.
Referring again to Fig. 1, after impedance factor determiner 300 determines the input echo impedance factor of antenna, controller 400
Judge whether the input echo impedance factor of the antenna meets predetermined condition, wherein, when the input echo impedance of the antenna
When coefficient is unsatisfactory for predetermined condition, controller 400 updates the adjustment parameter of adjustable impedance 200, and processor 100 is to adjustable impedance
200 provide the adjustment parameter after renewal.
Here, the predetermined condition refers to the input echo impedance factor of antenna and the preferable input echo impedance system of antenna
Several differences are in the range of target offset.
As an example, when the input echo impedance factor of antenna is unsatisfactory for predetermined condition, the controller 400 is configured
For：The desired impedance of input echo impedance factor and antenna based on the antenna determines the present impedance of antenna, it is determined that described
Position relationship of the present impedance of antenna in the antenna impedance Smith chart prestored between the desired impedance of antenna,
Present impedance based on the antenna is in the antenna impedance Smith chart prestored between the desired impedance of antenna
Position relationship, update the adjustment parameter of adjustable impedance 200.
Here, the Smith chart is that the scattered plane subscript of digital reflex system is painted with normalization input impedance (or admittance) equivalence
The calculating figure of family of circles, to utilize diagram method to solve in transmission line and some waveguide problems, to avoid cumbersome computing.
In addition, as an example, the present impedance of antenna can be determined by following equation 1：
Wherein, Z is the present impedance of antenna, and S11 is the input echo impedance factor of antenna, and Z ' is the preferable resistance of antenna
It is anti-.
Controller 400 according to an exemplary embodiment of the present invention is described hereinafter with reference to Fig. 3 and updates adjustable impedance 200
The example of adjustment parameter.
Assuming that the desired impedance of antenna is Z ', adjustable impedance 200 is adjustable condenser, when entrance is to the antenna of wireless terminal
During the pattern calibrated, controller 400 is sent for providing adjustment parameter index1 to adjustable impedance 200 to processor 100,
Processor 100 provides adjustment parameter index1 in response to the instruction to adjustable impedance 200, and adjustable impedance 200 receives regulation ginseng
After number index1, change the capacitance of itself, in the case where the feed point of one end of adjustable impedance 200 and antenna connects, be based on
The power for the test signal that signal generator 310 is launched to antenna and the power of the echo-signal received can be got can resistance trimming
The current input echo impedance factor S11 of the anti-lower antenna of 200 effect, it is 0 and pre- in the preferable input echo impedance factor of antenna
In the case of determining deviation range for ± 0.1dBm, the input echo impedance factor of antenna and the preferable input echo impedance system of antenna
Several difference is simultaneously unsatisfactory for predetermined condition, and controller 400 determines that the present impedance of antenna is Z using formula 1.
As shown in (A) in Fig. 3, in Smith chart, the desired impedance Z ' of antenna adds for Smith chart center
Thick circle system, the present impedance Z of antenna are located at the M opening positions in irregular roundness system in Smith chart, now, it may be determined that day
The position relationship of the present impedance of line and the desired impedance of antenna, it can be seen that the reason of present impedance and antenna based on antenna
Position relationship of the impedance in Smith chart is thought, in order to reduce the difference between the present impedance of antenna and the desired impedance of antenna
Away from, can by M points to upper right side move.
Position (that is, M point) and adjustable impedance of the present impedance of antenna in Smith chart have been preset in controller 400
Adjustment relation existing for 200, for example, during capacitance before the capacitance that adjustable impedance 200 newly changes is more than, antenna is worked as
Preceding impedance can be moved in the position of Smith chart to upper right side, and now, controller 400 can determine to make antenna according to existing algorithm
Position of the present impedance in Smith chart to upper right side move the desired impedance of infinite approach antenna when adjustable impedance 200
Adjustment parameter index2, and adjustment parameter index2 is sent to by adjustable impedance 200, adjustable impedance 200 by processor 100
Change the capacitance of itself based on adjustment parameter index2, so that position of the present impedance of antenna in Smith chart is wireless
Close to the circle system of the desired impedance of antenna, wherein, the present impedance based on the antenna under the adjustment parameter after renewal is in Smith
Shown in (B) in position such as Fig. 5 in circle, it can be seen that the present impedance based on the antenna under the adjustment parameter after renewal connects
It is bordering on circle system of the desired impedance of antenna in Smith chart.
Fig. 4 shows the example for the equipment that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated.
As shown in figure 4, the impedance factor determiner 300 can divide instrument to realize by the net outside wireless terminal, it is described
Controller 400 can be realized by the server outside wireless terminal.
In addition, as an example, the impedance factor determiner 300 also may be implemented in inside wireless terminal.
Fig. 5 shows showing according to the equipment calibrated to the antenna of wireless terminal of another exemplary embodiment of the present invention
Example.As shown in figure 5, the controller 400 can be realized by the server of exterior of terminal.
Fig. 6 shows that the input echo impedance factor of antenna according to an exemplary embodiment of the present invention meets day during predetermined condition
Line and the structure chart of adjustable impedance 200.
As an example, as shown in fig. 6, one end of adjustable impedance 200 is connected to the feed point of antenna, when the input of the antenna
When echo impedance factor meets predetermined condition, the new feed point of the other end of adjustable impedance 200 as antenna.Pass through this side
Formula, can be when the input echo impedance factor of antenna meets predetermined condition, using adjustable resistance 200 and antenna as an entirety
Instead of original antenna so that antenna is constantly in the optimal state of performance.
By the above-mentioned means, can be calibrated under the conditions of complete machine to the antenna of wireless terminal, pass through this calibration side
Formula, the precision of calibration can be not only improved, also reduce antenna is influenceed by follow-up mobile telephone production process.
Fig. 7 shows the flow for the method that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated
Figure.Here, as an example, the wireless terminal can be mobile communication terminal (for example, smart mobile phone), Intelligent worn device
The equipment that (for example, intelligent watch), tablet personal computer etc. are internally provided with antenna.
As shown in fig. 7, in step S100, adjustment parameter is provided from processor 100 to adjustable impedance 200.
Particularly, processor 100 can be connected with controller 400 in advance, be carried out when entering the antenna to wireless terminal
During the pattern of calibration, sent from controller 400 to processor 100 for providing adjustment parameter index1's to adjustable impedance 200
Instruction, adjustment parameter index1 is provided from processor 100 in response to the instruction to adjustable impedance 200.Here, the adjustment parameter
Index1 is determined by controller 400 according to historical experience record.In addition, as an example, the controller 400 also can directly lead to
The processor 100 or other special chips crossed inside wireless terminal realize, or, the controller 400 can be by wireless
The server of exterior of terminal is realized.
In step S200, the adjustment parameter index1 is received from processor 100 by adjustable impedance 200, and based on reception
Adjustment parameter index1 change the impedance parameter of itself.
Here, as an example, the adjustable impedance 200 can be adjustable condenser, the impedance parameter can be electric capacity
Value.Preferably, the adjustable impedance 200 may include the adjustable condenser of two series connection.
In step S300, the input echo impedance of the antenna under the impedance parameter is determined by impedance factor determiner 300
Coefficient.
As an example, one end of adjustable impedance 200 is connected to the feed point of antenna, by impedance factor determiner 300 from adjustable
The other end of impedance 200 determines the input echo impedance factor of the antenna under the impedance parameter.Below, Fig. 8 will be combined in detail
Describe in detail it is bright antenna is determined by impedance factor determiner 300 in above-mentioned this attachment structure input echo impedance factor the step of
Flow.
Fig. 8 shows the input echo according to an exemplary embodiment of the present invention that antenna is determined by impedance factor determiner 300
The flow chart of the step of impedance factor.
The impedance parameter of itself is changed by adjustment parameter index1 of the adjustable impedance 200 based on reception as shown in figure 8, working as
Afterwards, in step S310, test signal is launched to antenna via the other end of adjustable impedance, and based on described in adjustable impedance
One end receives the echo-signal returned from antenna.That is, the test signal can be transmitted into day via adjustable impedance 200
Line, the echo-signal can return to signal generator 310 via adjustable resistance 200.Here, the test signal refers to signal
Pumping signal caused by generator 310, after the echo-signal refers to that the pumping signal reaches antenna via adjustable impedance 200
The signal returned by antenna-reflected.
In step S320, the power of the test signal and the power of echo-signal are determined by measuring appliance 320.
In step S330, antenna is determined by the power of highway of the calculator 330 based on the test signal and echo-signal
Input echo impedance factor.Particularly, the input echo impedance factor of the antenna is the power and echo of test signal
The ratio of the power of signal.Because the test signal via adjustable impedance 200 is transmitted into antenna, the echo-signal is via can
Resistance trimming anti-200 returns to signal generator 310, and therefore, test signal and echo-signal receive the shadow of adjustable impedance 200
Ring.
In addition, as an example, the impedance factor determiner 300 can also divide instrument come real by the net outside wireless terminal
It is existing.
Referring again to Fig. 7, after the input echo impedance factor of antenna is determined by impedance factor determiner 300, in step
Whether S410, the input echo impedance factor for judging the antenna by controller 400 meet predetermined condition, wherein, when the day
When the input echo impedance factor of line is unsatisfactory for predetermined condition, the tune of adjustable impedance 200 is updated by controller 400 in step S420
Parameter is saved, after execution of step S420, returns and performs step S100, renewal is provided from processor 100 to adjustable impedance 200
Adjustment parameter afterwards.
Here, the predetermined condition refers to the input echo impedance factor of antenna and the preferable input echo impedance system of antenna
Several differences are in the range of target offset.
Fig. 9 shows the step of the adjustment parameter according to an exemplary embodiment of the present invention that adjustable impedance is updated by controller 400
Rapid flow chart.
As shown in figure 9, in step S421, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition, base
The present impedance of antenna is determined in the input echo impedance factor of the antenna and the desired impedance of antenna.
As an example, the present impedance of antenna can be determined by following equation 1：
Wherein, Z is the present impedance of antenna, and S11 is the input echo impedance factor of antenna, and Z ' is the preferable resistance of antenna
It is anti-.
In step S422, determine the present impedance of the antenna in the antenna impedance Smith chart prestored with day
Position relationship between the desired impedance of line.
Here, the Smith chart is that the scattered plane subscript of digital reflex system is painted with normalization input impedance (or admittance) equivalence
The calculating figure of family of circles, to utilize diagram method to solve in transmission line and some waveguide problems, to avoid cumbersome computing.
In step S423, the present impedance based on the antenna in the antenna impedance Smith chart prestored with day
Position relationship between the desired impedance of line, updates the adjustment parameter of adjustable impedance, and returns and perform step S100.
In addition, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition, wireless terminal records current
The adjustment parameter of adjustable impedance, and terminate methods described.
In addition, as an example, one end of adjustable impedance is connected to the feed point of antenna, when the input echo impedance of the antenna
When coefficient meets predetermined condition, the new feed point of the other end of adjustable impedance as antenna.In this way, can be in antenna
Input echo impedance factor when meeting predetermined condition, adjustable resistance 200 and antenna are replaced into original day as an entirety
Line so that antenna is constantly in the optimal state of performance.
, can be with the apparatus and method that the antenna according to an exemplary embodiment of the present invention to wireless terminal is calibrated
The antenna of wireless terminal is calibrated under the conditions of complete machine, by this calibrating mode, can not only improve the precision of calibration,
Also reduce antenna is influenceed by follow-up mobile telephone production process.
It should be noted that what the embodiment each above of the present invention was merely exemplary, and the present invention is not limited to this.Ability
Field technique personnel should be appreciated that：Without departing from the principles and spirit of the present invention, can change these embodiments,
Wherein, the scope of the present invention limits in claim and its equivalent.
Claims (10)
1. the equipment that a kind of antenna to wireless terminal is calibrated, including：
Processor, adjustment parameter is provided to adjustable impedance；
Adjustable impedance, adjustment parameter is received from processor, and the adjustment parameter based on reception changes the impedance parameter of itself；
Impedance factor determiner, it is determined that under the impedance parameter antenna input echo impedance factor；
Controller, judges whether the input echo impedance factor of the antenna meets predetermined condition,
Wherein, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition, controller updates the tune of adjustable impedance
Parameter is saved, processor provides the adjustment parameter after renewal to adjustable impedance.
2. equipment as claimed in claim 1, wherein, the adjustable impedance is adjustable condenser, and the impedance parameter is electric capacity
Value.
3. equipment as claimed in claim 1, wherein, one end of adjustable impedance is connected to the feed point of antenna, and impedance factor determines
Device determines the input echo impedance factor of the antenna under the impedance parameter from the other end of adjustable impedance.
4. equipment as claimed in claim 3, wherein, impedance factor determiner includes：
Signal generator, launch test signal to antenna via the other end of adjustable impedance, and via the institute of adjustable impedance
State one end and receive the echo-signal returned from antenna；
Measuring appliance, determine the power of the test signal and the power of echo-signal；
Calculator, the power of power and echo-signal based on the test signal determine the input echo impedance factor of antenna.
5. equipment as claimed in claim 1, wherein, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition
When, the controller is configured as：
The desired impedance of input echo impedance factor and antenna based on the antenna determines the present impedance of antenna, it is determined that described
Position relationship of the present impedance of antenna in the antenna impedance Smith chart prestored between the desired impedance of antenna,
Present impedance based on the antenna is in the antenna impedance Smith chart prestored between the desired impedance of antenna
Position relationship, update the adjustment parameter of adjustable impedance.
6. equipment as claimed in claim 1, wherein, one end of adjustable impedance is connected to the feed point of antenna, when the antenna
Input echo impedance factor is when meeting predetermined condition, the new feed point of the other end of adjustable impedance as antenna.
7. equipment as claimed in claim 1, the impedance factor determiner divides instrument to realize by the net outside wireless terminal.
8. equipment as claimed in claim 1, the controller passes through the processor inside wireless terminal or other special cores
Piece realizes, or, the controller realized by the server outside wireless terminal.
9. the equipment as described in claim any one of 1-8, wherein, the predetermined condition refers to the input echo impedance system of antenna
The ideal of number and antenna inputs the difference of echo impedance factor in the range of target offset.
10. a kind of method that antenna to wireless terminal is calibrated, including：
(A) adjustment parameter is provided from processor to adjustable impedance；
(B) adjustment parameter is received from processor by adjustable impedance, and the adjustment parameter based on reception changes the impedance of itself
Parameter；
(C) the input echo impedance factor of the antenna under the impedance parameter is determined by impedance factor determiner；
(D) whether the input echo impedance factor for judging the antenna by controller meets predetermined condition,
Wherein, when the input echo impedance factor of the antenna is unsatisfactory for predetermined condition, adjustable impedance is updated by controller
Adjustment parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784008.0A CN107786286A (en) | 2016-08-31 | 2016-08-31 | The apparatus and method calibrated to the antenna of wireless terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784008.0A CN107786286A (en) | 2016-08-31 | 2016-08-31 | The apparatus and method calibrated to the antenna of wireless terminal |
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| Publication Number | Publication Date |
|---|---|
| CN107786286A true CN107786286A (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610784008.0A Withdrawn CN107786286A (en) | 2016-08-31 | 2016-08-31 | The apparatus and method calibrated to the antenna of wireless terminal |
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| CN (1) | CN107786286A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041190A (en) * | 2018-09-17 | 2018-12-18 | 维沃移动通信有限公司 | A kind of Poewr control method and terminal |
| CN109150326A (en) * | 2018-11-05 | 2019-01-04 | Oppo（重庆）智能科技有限公司 | Antenna impedance adjustment method, electronic device and computer readable storage medium |
| CN109450560A (en) * | 2018-09-25 | 2019-03-08 | 广州求远电子科技有限公司 | Detection system, detection method and the terminal device of LF communication device |
| WO2024159912A1 (en) * | 2023-02-01 | 2024-08-08 | 荣耀终端有限公司 | Impedance calibration method, electronic device, medium and product |
-
2016
- 2016-08-31 CN CN201610784008.0A patent/CN107786286A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041190A (en) * | 2018-09-17 | 2018-12-18 | 维沃移动通信有限公司 | A kind of Poewr control method and terminal |
| CN109041190B (en) * | 2018-09-17 | 2021-02-05 | 维沃移动通信有限公司 | Power control method and terminal |
| CN109450560A (en) * | 2018-09-25 | 2019-03-08 | 广州求远电子科技有限公司 | Detection system, detection method and the terminal device of LF communication device |
| CN109150326A (en) * | 2018-11-05 | 2019-01-04 | Oppo（重庆）智能科技有限公司 | Antenna impedance adjustment method, electronic device and computer readable storage medium |
| WO2024159912A1 (en) * | 2023-02-01 | 2024-08-08 | 荣耀终端有限公司 | Impedance calibration method, electronic device, medium and product |
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Application publication date: 20180309 |