CN108267646A - Radio circuit and adjusting method - Google Patents
Radio circuit and adjusting method Download PDFInfo
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- CN108267646A CN108267646A CN201611262118.7A CN201611262118A CN108267646A CN 108267646 A CN108267646 A CN 108267646A CN 201611262118 A CN201611262118 A CN 201611262118A CN 108267646 A CN108267646 A CN 108267646A
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- antenna
- phase shifter
- frequency current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
Abstract
The disclosure discloses a kind of radio circuit and adjusting method, belongs to radio frequency arts.The radio circuit includes：PA, radio frequency testing seat, phase shifter, antenna measurement seat and antenna body；The radio-frequency current output terminal of radio frequency testing seat and PA are electrical connected, for testing the radio-frequency current that PA is exported；The radio-frequency current input terminal of antenna measurement seat and antenna body is electrical connected, and is tested for the radiance to antenna body；Phase shifter is arranged between radio frequency testing seat and antenna measurement seat, is electrical connected respectively with radio frequency testing seat and antenna measurement seat, for adjusting the phase of the radio-frequency current of PA outputs；Antenna body, for according to the radio-frequency current radiated radio frequency (RF) signal after phase adjustment.The embodiment of the present disclosure, which is realized, matches antenna with the power maximum point of PA, so that it is guaranteed that antenna efficiency and OTA test performances reach higher level.
Description
Technical field
This disclosure relates to radio frequency arts, more particularly to a kind of radio circuit and adjusting method.
Background technology
PA (PowerAmplifier, power amplifier) is as in RF (Radio Freqency, less radio-frequency) system
For providing amplified radio-frequency current to antenna, radiofrequency signal spoke is carried out by antenna according to radio-frequency current for important composition component
It penetrates.
In order to which PA is made to reach peak power output, developer needs to draw (loadpull) technology pair of shifting beforehand through load
PA and antenna carry out impedance matching.Since under high power work state, the internal resistance of PA and working performance can change, therefore
The maximum output power point of PA often not at the 50ohm of Smith chart (Smith Chart), and then cause using 50ohm as
When reference point carries out antenna adjustment, antenna efficiency is higher but OTA (Over The Air, over the air) testability of antenna
It can be poor.
Invention content
In order to solve to cause in the relevant technologies since the maximum output power point of PA is not at the 50ohm of Smith chart
When carrying out antenna adjustment as reference point using 50ohm, the problem of antenna efficiency is higher but the OTA test performances of antenna are poor, this public affairs
It opens embodiment and provides a kind of radio circuit and adjusting method.The technical solution is as follows：
According to the embodiment of the present disclosure in a first aspect, providing a kind of radio circuit, which includes：PA, radio frequency are surveyed
Try seat, phase shifter, antenna measurement seat and antenna body；
The radio-frequency current output terminal of radio frequency testing seat and PA are electrical connected, for being surveyed to the radio-frequency current that PA is exported
Examination；
The radio-frequency current input terminal of antenna measurement seat and antenna body is electrical connected, for the radiance to antenna body
It is tested；
Phase shifter is arranged between radio frequency testing seat and antenna measurement seat, electric with radio frequency testing seat and antenna measurement seat respectively
Property be connected, for adjust PA output radio-frequency current phase；
Antenna body, for according to the radio-frequency current radiated radio frequency (RF) signal after phase adjustment.
Optionally, phase shifter includes inductance capacitance (Inductance Capacitance, LC) phase-shift circuit or resistance
Capacitance (Resistance, Capacitance) RC phase-shift circuits；
Phase shifter adjusts radio frequency for the phase for passing through LC phase-shift circuits adjustment radio-frequency current or, by RC phase-shift circuits
The phase of electric current.
Optionally, phase shifter includes LC phase-shift circuits, and controllable impedance and capacitance are included in LC phase-shift circuits；
First connecting pin of controllable impedance is electrical connected with radio frequency testing seat, and second connection end and the antenna of controllable impedance are surveyed
Examination seat is electrical connected；
First connecting pin of capacitance and the second connection end of controllable impedance are electrical connected, the second connection end ground connection of capacitance；
Phase shifter, for adjusting the phase of radio-frequency current by adjusting the inductance value of controllable impedance.
Optionally, phase shifter includes RC phase-shift circuits, and adjustable resistance and capacitance are included in RC phase-shift circuits；
First connecting pin of adjustable resistance is electrical connected with radio frequency testing seat, and second connection end and the antenna of adjustable resistance are surveyed
Examination seat is electrical connected；
First connecting pin of capacitance is connected with the second connection end of adjustable resistance, the second connection end ground connection of capacitance；
Phase shifter, for adjusting the phase of radio-frequency current by adjusting the resistance value of adjustable resistance.
Optionally, ranging from 0 ° to 360 ° of the phase adjustment of phase shifter.
According to the second aspect of the embodiment of the present disclosure, a kind of adjusting method is provided, for radio frequency electrical as described in relation to the first aspect
Road, this method include：
When PA completes loadpull debugging, the phase of phase shifter is adjusted；
OTA tests are carried out under test phase after adjustment, obtain the corresponding test result of test phase；
Test result at least once according to getting determines the target phase of phase shifter, wherein, target phase is corresponding
Test result is better than the corresponding test result of other test phases.
Optionally, the phase of phase shifter is adjusted, including：
Preset phase stepping is obtained, preset phase stepping is carries out phase adjustment value during OTA tests every time；
According to the phase of preset phase step-by-step adjustment phase shifter；
Wherein, corresponding test phase+preset phase stepping during the test phase after adjusting=last time OTA tests.
Optionally, this method further includes：
Phase shifter is adjusted to target phase, phase shifter is for adjusting radio-frequency current to target phase, so as to antenna body
According to the radio-frequency current radiated radio frequency (RF) signal after phase adjustment.
The technical solution that the embodiment of the present disclosure provides can include the following benefits：
By setting phase shifter, and pass through the phase shifter between the radio frequency testing seat of radio circuit and antenna measurement seat
Adjust PA output radio-frequency current phase, so as to the antenna body in radio circuit according to the radio-frequency current after phase adjustment into
Row radiofrequency signal radiates；The maximum output power point due to PA is solved not at the 50ohm of Smith chart, cause with
When 50ohm carries out antenna adjustment for reference point, the problem of antenna efficiency is higher but the OTA test performances of antenna are poor；It realizes
Antenna is matched with the power maximum point of PA, so that it is guaranteed that antenna efficiency and OTA test performances reach higher level.
It should be understood that above general description and following detailed description is only exemplary, this can not be limited
It is open.
Description of the drawings
Attached drawing herein is incorporated into specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and in specification together for explaining the principle of the disclosure.
Fig. 1 shows the schematic diagram for the radio circuit that an embodiment of the present disclosure provides；
Fig. 2 shows the schematic diagrames of the radio circuit of the disclosure another embodiment offer；
Fig. 3 shows the schematic diagram of radio circuit that another embodiment of the disclosure provides；
Fig. 4 A show the schematic diagram for the adjusting method that an embodiment of the present disclosure provides；
Fig. 4 B show the schematic diagram of adjusting method that another embodiment of the disclosure provides.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, example is illustrated in the accompanying drawings.Following description is related to
During attached drawing, unless otherwise indicated, the same numbers in different attached drawings represent the same or similar element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
It please refers to Fig.1, it illustrates the schematic diagram for the radio circuit that an embodiment of the present disclosure provides, in the radio circuit
Including：PA 110, radio frequency testing seat 120, phase shifter 130, antenna measurement seat 140 and antenna body 150.
PA 110 is the electronic device for amplifying in radio circuit (high frequency) radio-frequency current.Wherein, PA 110 is Class A
Power amplifier, Class B power amplifier, class AB power amplifier or Class C power amplifier etc., the disclosure is not defined the concrete type of PA 110.
The radio-frequency current output terminal 111 of radio frequency testing seat 120 and PA 110 is electrical connected, for being penetrated to 110 outputs of PA
Frequency electric current is tested.Optionally, circuit designer utilization tests probe and is inserted into the mode of the radio frequency testing seat 120 to radio frequency
Electric current is tested.
In order to which PA 110 is made to reach peak power output or reaches the preferable linearity, circuit designer needs pass through
Loadpull technologies debug the source impedance and load impedance of PA 110.In loadpull debugging process, circuit design
Personnel draw the corresponding grade output power curves (Power of different loads impedance according to setting load impedance, and with reference to Smith chart
Contours), so as to by load impedance corresponding when output power curves find peak power output.
Antenna measurement seat 140 and the radio-frequency current input terminal 151 of antenna body 150 are electrical connected, for antenna body
150 radiance is tested.Optionally, circuit designer utilizes the mode for testing probe insertion antenna measurement seat 140
The radiance of antenna body is tested.
Antenna body 150 has radiofrequency signal radiation and receive capabilities.Wherein, when carrying out radiofrequency signal radiation, antenna
Ontology 150 is the high-frequency radio frequency current emissions radiofrequency signal exported according to PA 110.Antenna body 150 is planar inverted F-shape antenna
(Planar Inverted F-shaped Antenna, PIFA), planar inverted L antennas (Planar Invert L Antenna,
PILA), inverted F shaped antenna (Invert F Antenna, IFA), inverted-L antenna (Invert L Antenna, ILA), monopole
Antenna (monopole antenna) or loop antenna (loop antenna) etc., the disclosure is not to the type of antenna body
It is defined.
Optionally, circuit designer carries out loadpull debugging by 140 pairs of antenna bodies 150 of antenna measurement seat, i.e.,
Impedance matching is carried out to antenna body 150 and feeder line.
In the relevant technologies, radio frequency testing seat is arranged at nearly PA, and antenna measurement seat is then arranged at nearly antenna body, and is penetrated
It is electrical connected between frequency test bench and antenna measurement seat.The amplified high-frequency radio frequency electric currents of PA are surveyed via radio frequency testing seat and antenna
It tries seat and reaches antenna body, radiofrequency signal radiation is carried out according to high-frequency radio frequency electric current by antenna body.
And in the embodiment of the present disclosure, phase shifter 130 is additionally provided between radio frequency testing seat 130 and antenna measurement seat 140.PA
When the high-frequency radio frequency electric current of 110 outputs flows through phase shifter 130, phase shifter 130 adjusts the phase of the high-frequency radio frequency electric current
It is whole, and high-frequency radio frequency electric current after adjustment phase place is transmitted to antenna body 150 via antenna measurement seat 140, so as to antenna body
150 according to the high-frequency radio frequency current emissions radiofrequency signal after phase adjustment, wherein, ranging from 0 ° of the phase adjustment of phase shifter 130
To 360 °.
Optionally, which includes LC phase-shift circuits or RC phase-shift circuits, correspondingly, phase shifter 130 passes through
The phase of LC phase-shift circuits or the radio-frequency current of RC phase-shift circuits adjustment PA110 outputs.Phase shifter 130 can also use other classes
The phase-shift circuit of type is adjusted the phase of radio-frequency current, and the disclosure does not limit the type of phase-shift circuit in phase shifter
It is fixed.
Optionally, manually or automatically, control phase shifter 130 adjusts high-frequency radio frequency electric current to circuit developer
To different test phases, and OTA tests are carried out under different test phases, so as to obtain the corresponding test of different test phases
As a result.By comparing the test performance indicated by each test result, circuit developer will be corresponding to best test performance
Test phase is determined as the target phase of phase shifter, and phase shifter 130 is adjusted to the target phase.Under the target phase,
The high efficiency point of antenna body 150 and the maximum power point of PA110 match, and antenna efficiency and OTA test performances reach
Higher level.
In addition, it is different from traditional antenna loadpull debugging (matching and debugging at antenna leading portion), in the present embodiment, lead to
It crosses and phase shifter is set in front of antenna measurement seat, more matching positions are reserved for antenna body, so as to improve antenna tune
The degree of freedom of examination is conducive to the impedance matching of antenna body.
In conclusion in the present embodiment, by being set between the radio frequency testing seat of radio circuit and antenna measurement seat
Phase shifter, and pass through the phase shifter adjustment PA output radio-frequency current phase, so as to the antenna body in radio circuit according to
Radio-frequency current after phase adjustment carries out radiofrequency signal radiation；The maximum output power point due to PA is solved not in Smith
At the 50ohm of figure, when causing to carry out antenna adjustment as reference point using 50ohm, antenna efficiency is higher but the OTA test performances of antenna
The problem of poor；It realizes and matches antenna with the power maximum point of PA, so that it is guaranteed that antenna efficiency and OTA test performances
Reach higher level.
In a kind of possible embodiment, on the basis of Fig. 1, as shown in Fig. 2, phase shifter 130 includes LC phase shifts
Circuit, comprising controllable impedance 131 and capacitance 132 in the LC phase-shift circuits, phase shifter 130 is the inductance by adjusting controllable impedance
Value adjusts the phase of radio-frequency current.
As shown in Fig. 2, controllable impedance 131 includes the first connecting pin 131a and second connection end 131b, capacitance 132 includes the
One connecting pin 132a and second connection end 132b.
Wherein, the first connecting pin 132a of controllable impedance 131 is electrical connected with radio frequency testing seat 120, controllable impedance 131
Second connection end 131b is electrical connected with antenna measurement seat 140, and the radio-frequency current that radio frequency testing seat 120 flows out passes through adjustable electric
First connecting pin 131a of sense 131 flows into phase shifter 130, and the second connection end 131b for passing through controllable impedance 131 flows into antenna
Test bench 140.
The second connection end 131b of the first connecting pin 132a and controllable impedance 131 of capacitance 132 are electrical connected, capacitance 132
Second connection end 131b ground connection, flow through the radio-frequency current of controllable impedance 131 i.e. by the first connecting pin 132a of capacitance 132 streams
Enter capacitance 132.
In the case where controllable impedance 131 and capacitance 132 interact, the phase of the radio-frequency current flowed out from LC phase-shift circuits occurs
Variation.Further, controllable impedance 131 has at least one inductance value, and by adjusting the inductance value of controllable impedance 131, LC is moved
Circuitry phase can realize the adjusting by radio-frequency current to out of phase, wherein, the phase adjustment ranges of LC phase-shift circuits for 0 ° extremely
360°。
Optionally, circuit developer manually or automatically adjusts the inductance value of controllable impedance 131, is controlled with this
Phase shifter 130 adjusts high-frequency radio frequency electric current to different test phases, and OTA tests are carried out under different test phases.It is logical
Cross the test performance indicated by more each test result, test phase of the circuit developer corresponding to by best test performance
It is determined as the target phase of phase shifter, and controllable impedance 131 is adjusted into inductance value corresponding to the target phase.
In alternatively possible embodiment, on the basis of Fig. 1, as shown in figure 3, phase shifter 130 includes RC shiftings
Circuitry phase, comprising adjustable resistance 133 and capacitance 134 in the RC phase-shift circuits, phase shifter 130 is the electricity by adjusting adjustable resistance
Resistance value adjusts the phase of radio-frequency current.
As shown in figure 3, adjustable resistance 133 includes the first connecting pin 133a and second connection end 133b, capacitance 134 includes the
One connecting pin 134a and second connection end 134b.
Wherein, the first connecting pin 133a of adjustable resistance 133 is electrical connected with radio frequency testing seat 120, controllable impedance 133
Second connection end 133b is electrical connected with antenna measurement seat 140, and the radio-frequency current that radio frequency testing seat 120 flows out passes through adjustable electric
First connecting pin 133a of resistance 133 flows into phase shifter 130, and the second connection end 133b for passing through adjustable resistance 133 flows into antenna
Test bench 140.
The second connection end 133b of the first connecting pin 134a and adjustable resistance 133 of capacitance 134 are electrical connected, capacitance 134
Second connection end 131b ground connection, flow through the radio-frequency current of controllable impedance 131 i.e. by the first connecting pin 132a of capacitance 132 streams
Enter capacitance 134.
In the case where adjustable resistance 133 and capacitance 134 interact, the phase of the radio-frequency current flowed out from RC phase-shift circuits occurs
Variation.Further, adjustable resistance 133 has at least one resistance value, and by adjusting the resistance value of adjustable resistance 133, RC is moved
Circuitry phase can realize the adjusting by radio-frequency current to out of phase, wherein, the phase adjustment ranges of RC phase-shift circuits for 0 ° extremely
360°。
Optionally, circuit developer manually or automatically adjusts the resistance value of adjustable resistance 133, is controlled with this
Phase shifter 130 adjusts high-frequency radio frequency electric current to different test phases, and OTA tests are carried out under different test phases.It is logical
Cross the test performance indicated by more each test result, test phase of the circuit developer corresponding to by best test performance
It is determined as the target phase of phase shifter, and adjustable resistance 133 is adjusted into resistance value corresponding to the target phase.
In above-described embodiment, phase shifter utilizes LC phase-shift circuits or RC phase-shift circuits, by adjusting controllable impedance or adjustable
The mode of resistance, you can change the phase for the high-frequency radio frequency electric current for flowing into antenna body, phase adjustment mode is simple and efficiency compared with
It is high.
For the phase shifter shown in Fig. 1 to 3, circuit designer needs the phase by repeatedly adjusting phase shifter so that
When antenna body carries out radiofrequency signal radiation according to the radio-frequency current after phase adjusted, antenna efficiency and the power maximum point phase of PA
Matching.The process for adjusting phase shifter phase is illustrated using schematical embodiment below.
Please refer to Fig.4 A, it illustrates an embodiment of the present disclosure provide adjusting method schematic diagram, the present embodiment with
The adjusting method for have Fig. 1 to 3 it is any shown in illustrate for radio circuit, this method comprises the following steps.
In step 401, when PA completes loadpull debugging, the phase of phase shifter is adjusted.
When in radio circuit PA complete loadpull debugging when, circuit designer will the terminal (be built-in with and penetrate
Frequency circuit) it is positioned over the OTA tests carried out in darkroom under designated frequency band.
In the present embodiment, darkroom has the function of automatic decision, and before carrying out OTA tests every time, darkroom is sentenced automatically by this
The phase of disconnected function instruction terminal automatic adjustment phase shifter, and change the phase for the radio-frequency current for flowing through phase shifter with this.
Optionally, when phase shifter includes LC phase-shift circuits as indicated with 2, terminal is by adjusting the inductance of controllable impedance
Value adjusts the phase of phase shifter；When phase shifter includes RC phase-shift circuits as indicated at 3, terminal is by adjusting adjustable resistance
Resistance value adjust the phase of phase shifter.
In a kind of possible embodiment, circuit designer is phase stepping for phase shifter setting in advance, is carrying out OTA
During test, phase shifter is i.e. according to preset phase stepping adjust automatically test phase.As shown in Figure 4 B, this step includes following step
Suddenly：
In step 402A, preset phase stepping is obtained, preset phase stepping is carries out phase tune during OTA tests every time
Whole value.
Circuit designer sets preset phase stepping according to measuring accuracy demand.Preset phase stepping is smaller, test essence
Degree is higher, and preset phase stepping is bigger, and measuring accuracy is lower.For example, the preset phase stepping is 5 °.
In step 402B, according to the phase of phase shifter described in preset phase step-by-step adjustment, wherein, the test phase after adjusting
Corresponding test phase+preset phase stepping when position=last time OTA is tested.
In a kind of possible embodiment, when the starting test phase of phase shifter is 0 °, phase shifter is adjusted every time
During phase, terminal increases preset phase stepping in upper primary OTA tests on the basis of corresponding test phase；Work as phase shifter
Starting test phase when being 360 °, when adjusting the phase of phase shifter every time, the terminal i.e. corresponding survey in upper primary OTA test
Preset phase stepping is subtracted on the basis of examination phase, until traversing entire phase adjustment range (0 ° to 360 °).
For example, the starting test phase of phase shifter is 0 °, and preset phase stepping is 5 °, then carries out second of OTA test
When, the test phase of phase shifter is adjusted to 5 °, and when carrying out third time OTA tests, the test phase of phase shifter is adjusted to
10 °, until the test phase of phase shifter is adjusted to 360 °.
In step 402, OTA tests are carried out under test phase after adjustment, obtain the corresponding test knot of test phase
Fruit.
After having adjusted phase, terminal is to carry out OTA tests according to the test phase after adjusting.In OTA test process, darkroom
Obtain the test result of instruction radio circuit OTA performances.
Optionally, for each secondary test result got, darkroom closes test result with corresponding test phase
Connection storage, subsequently to determine the corresponding test phase of optimal test result.
In step 403, the target phase of phase shifter is determined according to the test result at least once got, wherein, mesh
It marks the corresponding test result of phase and is better than the corresponding test result of other test phases.
When after each test phase completes OTA tests, darkroom is according to the test result at least once got, to each
Test performance indicated by secondary test result is compared, so as to which the test phase corresponding to optimal test performance is determined as mesh
Mark phase.Under the target phase, the power maximum point of antenna efficiency and PA match.
In step 404, phase shifter is adjusted to target phase, phase shifter for adjusting radio-frequency current to target phase,
So that antenna body is according to the radio-frequency current radiated radio frequency (RF) signal after phase adjustment.
After the target phase for determining phase shifter, terminal adjusts phase shifter to target phase so that radio circuit is in work
Make under state, can either ensure that the power maximum point of antenna efficiency and PA match, and can ensure the performance of OTA tests.
In conclusion in the present embodiment, by increasing automatic decision function for darkroom so that the terminal in darkroom can be certainly
The dynamic phase for adjusting phase shifter in radio circuit, so as to fulfill under out of phase to carrying out OTA tests under designated frequency band, entirely
Test process improves testing efficiency without human intervention.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice invention disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principle of the disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as illustratively, and the true scope and spirit of the disclosure are by following
Claim is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by appended claim.
Claims (8)
1. a kind of radio circuit, which is characterized in that the radio circuit includes：Power amplifier PA, radio frequency testing seat, phase shift
Device, antenna measurement seat and antenna body；
The radio-frequency current output terminal of the radio frequency testing seat and the PA is electrical connected, for the radio-frequency current exported to the PA
It is tested；
The radio-frequency current input terminal of the antenna measurement seat and the antenna body is electrical connected, for the antenna body
Radiance is tested；
The phase shifter is arranged between the radio frequency testing seat and the antenna measurement seat, respectively with the radio frequency testing seat and
The antenna measurement seat is electrical connected, for adjusting the phase of the radio-frequency current of the PA outputs；
The antenna body, for according to the radio-frequency current radiated radio frequency (RF) signal after phase adjustment.
2. radio circuit according to claim 1, which is characterized in that the phase shifter includes inductance capacitance LC phase shifts electricity
Road or resistance capacitance RC phase-shift circuits；
The phase shifter, for adjusting the phase of the radio-frequency current by the LC phase-shift circuits or, passing through the RC phase shifts
The phase of radio-frequency current described in the regulation of electrical circuit.
3. radio circuit according to claim 2, which is characterized in that the phase shifter includes the LC phase-shift circuits,
And controllable impedance and capacitance are included in the LC phase-shift circuits；
First connecting pin of the controllable impedance is electrical connected with the radio frequency testing seat, the second connection end of the controllable impedance
It is electrical connected with the antenna measurement seat；
First connecting pin of the capacitance and the second connection end of the controllable impedance are electrical connected, the second connection of the capacitance
End ground connection；
The phase shifter, for adjusting the phase of the radio-frequency current by adjusting the inductance value of the controllable impedance.
4. radio circuit according to claim 2, which is characterized in that the phase shifter includes the RC phase-shift circuits,
And adjustable resistance and capacitance are included in the RC phase-shift circuits；
First connecting pin of the adjustable resistance is electrical connected with the radio frequency testing seat, the second connection end of the adjustable resistance
It is electrical connected with the antenna measurement seat；
First connecting pin of the capacitance is connected with the second connection end of the adjustable resistance, and the second connection end of the capacitance connects
Ground；
The phase shifter, for adjusting the phase of the radio-frequency current by adjusting the resistance value of the adjustable resistance.
5. radio circuit according to any one of claims 1 to 4, which is characterized in that the phase adjustment range of the phase shifter
It is 0 ° to 360 °.
6. a kind of adjusting method, which is characterized in that the method is for 1 to 5 any radio circuit of power, the method packet
It includes：
When the PA, which completes load, draws shifting loadpull debugging, the phase of the phase shifter is adjusted；
Over the air OTA tests are carried out under test phase after adjustment, obtain the corresponding test knot of the test phase
Fruit；
Test result described at least once according to getting determines the target phase of the phase shifter, wherein, the target phase
The corresponding test result in position is better than the corresponding test result of other test phases.
7. according to the method described in claim 6, it is characterized in that, the phase for adjusting the phase shifter, including：
Preset phase stepping is obtained, the preset phase stepping is carries out phase adjustment value during OTA tests every time；
According to the phase of phase shifter described in the preset phase step-by-step adjustment；
Wherein, the corresponding test phase+preset phase stepping during test phase after adjusting=last time OTA tests.
8. the method described according to claim 6 or 7, which is characterized in that the method further includes：
The phase shifter is adjusted to the target phase, the phase shifter is used to adjust the radio-frequency current to the target phase
Position, so that the antenna body is according to the radio-frequency current radiated radio frequency (RF) signal after phase adjustment.
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| CN201611262118.7A CN108267646B (en) | 2016-12-30 | 2016-12-30 | Radio frequency circuit and adjusting method |
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| CN201611262118.7A CN108267646B (en) | 2016-12-30 | 2016-12-30 | Radio frequency circuit and adjusting method |
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| CN108267646B CN108267646B (en) | 2021-08-10 |
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Cited By (4)
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|---|---|---|---|---|
| CN110932797A (en) * | 2019-11-30 | 2020-03-27 | 惠州Tcl移动通信有限公司 | Connecting circuit, connecting circuit group, system and method for verifying active performance of antenna |
| CN112213615A (en) * | 2020-09-09 | 2021-01-12 | 麦腾物联网技术有限公司 | Radio frequency circuit debugging method and device, electronic equipment and storage medium |
| CN113690619A (en) * | 2021-09-15 | 2021-11-23 | 宇龙计算机通信科技(深圳)有限公司 | Antenna and terminal |
| CN114499703A (en) * | 2022-01-13 | 2022-05-13 | 维沃移动通信有限公司 | Radio frequency signal test circuit, test probe and electronic equipment |
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| CN105633580A (en) * | 2015-12-25 | 2016-06-01 | 海能达通信股份有限公司 | Adjustable antenna |
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