CN102510364A - Method for calibrating amplitude phase consistency of intelligent multi-channel power amplifier - Google Patents
Method for calibrating amplitude phase consistency of intelligent multi-channel power amplifier Download PDFInfo
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- CN102510364A CN102510364A CN2011104566166A CN201110456616A CN102510364A CN 102510364 A CN102510364 A CN 102510364A CN 2011104566166 A CN2011104566166 A CN 2011104566166A CN 201110456616 A CN201110456616 A CN 201110456616A CN 102510364 A CN102510364 A CN 102510364A
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Abstract
The invention discloses a method for calibrating the amplitude phase consistency of an intelligent multi-channel power amplifier and relates to the field of base station amplifiers. The method comprises the following steps of: (1) energizing the intelligent multi-channel power amplifier to allow the intelligent multi-channel power amplifier to be self-checked; (2) configuring a field-programmable gate array (FPGA) by using software to make the FPGA send a group of known relatively-independent sequences in each channel of the intelligent multi-channel power amplifier; (3) sending a signal which is coupled to a radio frequency output port into the FPGA through a feedback link, and capturing data of the feedback link by using the software; (4) estimating channel impulse response, and computing difference between the phase and amplitude of each channel; (5) computing correction factors; and (6) configuring the correction factors to finish calibration. The method for calibrating the amplitude phase consistency of the intelligent multi-channel power amplifier has the advantages that: on the basis of the conventional hardware, the amplitude phase consistency of each channel can be calibrated by using the software and the FPGA, and the power and efficiency of a system are guaranteed.
Description
Technical field
The present invention relates to the base station field, particularly a kind of amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier.
Background technology
Along with the development of society, increasing industry is concerned about the importance of energy-saving and emission-reduction, and traditional base station industry is no exception.In order to improve power amplification efficiency, base station has used the digital processing technology in forward position, has designed a intelligent multichannel power amplifier.But in design process, run into multiple signals mutually inconsistent problem that causes power output and deterioration of efficiency of width of cloth when synthetic.
Above-mentioned intelligent multichannel power amplifier is as shown in Figure 1; To become analog if signal through down-conversion from signal of base station; Behind ADC, send into FPGA; Through FPGA intermediate-freuqncy signal is carried out converting to after the digital processing output of four tunnel radiofrequency signals and send into radio frequency amplifier, at the synthetic transmitting antenna that outputs to of amplifier end.In order to raise the efficiency and power output, this intelligence multichannel power amplifier has adopted four tunnel synthetic modes to realize, but because there is inconsistent situation mutually in the signal width of cloth that odjective causes such as circuit cause being sent to power amplifier, makes power output and efficient all worsen.Existing mode generally adopts the mode of hardware debug to come the calibration of realization amplitude and phase place, because the limitation of the inconsistency of hardware and hardware debug itself causes debugging difficulty to strengthen, has reduced production capacity.
Summary of the invention
The objective of the invention is to overcome existing above-mentioned deficiency in the prior art, a kind of flexibility that has more is provided, reduce the amplitude-phase consistency Calibration Method of the intelligent multichannel power amplifier of hardware debug difficulty.
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
A kind of amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier may further comprise the steps:
(1), make intelligent multichannel power amplifier carry out self check to intelligent multichannel power amplifier electrifying startup;
(2) utilize software arrangements FPGA (Field-Programmable Gate Array, field programmable gate array), make FPGA send one group of known relatively independent sequence at each passage of intelligent multichannel power amplifier;
(3) through based on feedback link the signal of radio frequency delivery outlet coupling is sent among the FPGA, utilized software to catch the data of based on feedback link;
(4) estimating channel impulse response, thus phase place and the amplitude difference between each passage calculated;
(5) calculate modifying factor;
(6) the configuration modifications factor is accomplished calibration; Said software is common software.
Preferably, in the amplitude-phase consistency Calibration Method of above-mentioned intelligent multichannel power amplifier, the known relatively independent sequence of said step (2) is each self-corresponding training sequence of each passage.
Preferably; In the amplitude-phase consistency Calibration Method of above-mentioned intelligent multichannel power amplifier, in order not influence normal communication, so the relatively independent sequence of said step (2) requires to send at the GP time slot; And consider the fail safe of power amplifier, the power of signal can not be excessive.
Preferably, in the amplitude-phase consistency Calibration Method of above-mentioned intelligent multichannel power amplifier, in the said step (4),, be reference channel with the first passage for simplified design, the maximum of each passage component and the target difference between the component in the same way in the same way relatively.
Preferably, in the amplitude-phase consistency Calibration Method of above-mentioned intelligent multichannel power amplifier, the modifying factor in the said step (5) comprises time delay modifying factor and amplitude modifying factor.
Preferably, in the amplitude-phase consistency Calibration Method of above-mentioned intelligent multichannel power amplifier, the modifying factor in the said step (6) is by software arrangements, and FPGA revises according to each roadbed band signal of this factor pair, guarantees the consistency of each channel phases and amplitude.
Preferably, in the amplitude-phase consistency Calibration Method of above-mentioned intelligent multichannel power amplifier, configuration FPGA adjustment communication channel delay guarantees that the time-delay between each passage is consistent, is equal to target component in the same way.
Compared with prior art, beneficial effect of the present invention:
1, the amplitude-phase consistency Calibration Method of the present invention intelligence multichannel power amplifier is on based on existing hardware foundation, uses the mode of software and FPGA to realize that each passage amplitude-phase consistency calibrates, and guaranteed the power and the efficient of system;
2, the amplitude-phase consistency Calibration Method of the present invention's intelligence multichannel power amplifier is used the mode of software and FPGA, and is convenient, flexible, easy easy realization.
Description of drawings:
Fig. 1 is the intelligent multichannel power amplification system block diagram that the present invention relates to;
Fig. 2 is the amplitude-phase consistency Calibration Method flow chart of the present invention's intelligence multichannel power amplifier.
Embodiment
Below in conjunction with Test Example and embodiment the present invention is made further detailed description.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, allly all belong to scope of the present invention based on the technology that content of the present invention realized.
Embodiment 1
A kind of amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier, as shown in Figure 2, may further comprise the steps:
(1), make intelligent multichannel power amplifier carry out self check to intelligent multichannel power amplifier electrifying startup;
(2) utilize common software configuration FPGA (Field-Programmable Gate Array; Field programmable gate array); Make FPGA send one group of each self-corresponding known training sequence (promptly sending one group of known relatively independent sequence), in order not influence normal communication, so relatively independent known training sequence requires to send at the GP time slot at each passage at each passage of intelligent multichannel power amplifier; And consider the fail safe of power amplifier, the power of signal can not be excessive.
(3) through based on feedback link the signal of radio frequency delivery outlet coupling is sent among the FPGA, utilized common software to catch the data of based on feedback link;
(4) estimating channel impulse response, thus phase place and the amplitude difference between each passage calculated; For simplified design, be reference channel with the first passage, the maximum of each passage of comparison is component I in the same way
MaxAnd target is the difference between the component I in the same way;
(5) calculate modifying factor, said modifying factor comprises time delay modifying factor and amplitude modifying factor;
(6) by the common software configuration modifications factor, FPGA revises according to each roadbed band IQ signal of this factor pair, guarantees the consistency of each channel phases and amplitude; Configuration FPGA adjustment communication channel delay; Guarantee that the time-delay between each passage is consistent, be equal to target component in the same way, accomplish calibration.
Step (2) to (5) is specially: each each self-corresponding training sequence of transmission channel emission, after the radio frequency delivery outlet receives training sequence, just can calculate amplitude difference and phase difference between each transmission channel.The amplitude calibration sequence is generated by Matlab and is solidificated in the program, and up to adopt same sequence, transmitting time during with the emission amplitude calibration be the GP time slot.
What reality was sent is the complex sequences that gets according to this reality sequence modulation, and modulation system is: one group of per 2 bit are mapped as corresponding plural number according to following relation of plane with it: 00 <-1,01--j, 10 <-j, 11 <--1.
The training sequence length of transmitting calibration is 35chips, and wherein basic training sequences is 32chips, and the training sequence that all passages are corresponding is obtained by 32chips basic sequence cyclic shift.
If real basic training sequences is
; Corresponding this training of complex radical series is
, i.e.
.
According to cycle characteristics, can get the training sequence of four-way.If the training sequence that calibration receives is
; Tectonic sequence thus;
; Wherein,
.
The estimating channel impulse response can adopt the method for FFT.
Compare each passage I
MaxBetween difference and target I, produce the alarm of transmission channel time delay and adjust with time delay.FPGA adjusts communication channel delay, guarantees that the time-delay between each passage is consistent, is equal to target I; Upgrade the amplitude of each passage simultaneously, guarantee that the amplitude between each passage is consistent.
Common software+FPGA the mode of using present embodiment realizes the calibration of multichannel amplitude-phase consistency; Its realization is to realize calibration through the mode of sending known training sequence; Width of cloth phase modifying factor is disposed by common software; FPGA revises according to each roadbed band IQ signal of this factor pair, guarantees the consistency of each channel phases and amplitude, and its realization is time delay and the amplitude that compensates each roadbed band IQ signal through modifying factor.
Claims (7)
1. the amplitude-phase consistency Calibration Method of an intelligent multichannel power amplifier is characterized in that, said method comprising the steps of:
(1), make intelligent multichannel power amplifier carry out self check to intelligent multichannel power amplifier electrifying startup;
(2) utilize software arrangements FPGA, make FPGA send one group of known relatively independent sequence at each passage of intelligent multichannel power amplifier;
(3) through based on feedback link the signal of radio frequency delivery outlet coupling is sent among the FPGA, utilized software to catch the data of based on feedback link;
(4) estimating channel impulse response, thus phase place and the amplitude difference between each passage calculated;
(5) calculate modifying factor;
(6) the configuration modifications factor is accomplished calibration.
2. the amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier according to claim 1 is characterized in that, the known relatively independent sequence of said step (2) is each self-corresponding training sequence of each passage.
3. the amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier according to claim 2 is characterized in that, the relatively independent sequence of said step (2) requires to send at the GP time slot, and signal power can not be excessive.
4. the amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier according to claim 3 is characterized in that, in the said step (4), is reference channel with the first passage, relatively the maximum of each passage component and the target difference between the component in the same way in the same way.
5. the amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier according to claim 4 is characterized in that, the modifying factor in the said step (5) comprises time delay modifying factor and amplitude modifying factor.
6. the amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier according to claim 5; It is characterized in that; Modifying factor in the said step (6) is by software arrangements, and FPGA revises according to each roadbed band signal of this factor pair, guarantees the consistency of each channel phases and amplitude.
7. the amplitude-phase consistency Calibration Method of intelligent multichannel power amplifier according to claim 6 is characterized in that, configuration FPGA adjustment communication channel delay guarantees that the time-delay between each passage is consistent, is equal to target component in the same way.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021900A (en) * | 2015-07-02 | 2015-11-04 | 北京理工大学 | Channel agility difference measuring method for multi-channel measurement |
| CN105071870A (en) * | 2015-07-02 | 2015-11-18 | 北京理工大学 | Time slot design method for channel agility difference measurement |
| CN105846917A (en) * | 2016-03-16 | 2016-08-10 | 太仓市同维电子有限公司 | Calibration system and calibration method thereof based on wireless test |
| CN106843051A (en) * | 2017-02-17 | 2017-06-13 | 上海星秒光电科技有限公司 | A kind of FPGA time-delay mechanisms and method |
| CN107528643A (en) * | 2017-09-04 | 2017-12-29 | 中国计量大学 | A kind of multichannel emitter and its passage consistency error auto compensatng method |
| CN110031809A (en) * | 2019-04-15 | 2019-07-19 | 北京电子工程总体研究所 | A kind of more receiving channel amplitude-phase consistency Calibration Methods of radar and readable storage medium storing program for executing |
| CN110554331A (en) * | 2019-08-23 | 2019-12-10 | 武汉中科牛津波谱技术有限公司 | emission phase calibration system and method of nuclear magnetic resonance instrument |
| CN112583360A (en) * | 2021-02-25 | 2021-03-30 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
| CN113092880A (en) * | 2021-03-04 | 2021-07-09 | 北京航空航天大学 | Multichannel array receiver amplitude-phase inconsistency detection method based on phase rotation |
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| GB2380079A (en) * | 2001-09-20 | 2003-03-26 | Roke Manor Research | A mobile phone base-station multicarrier amplifier with feedforward linearisation |
| CN1476164A (en) * | 2002-04-19 | 2004-02-18 | Multichannel power amplifier | |
| CN101964449A (en) * | 2010-08-27 | 2011-02-02 | 中国科学院上海微***与信息技术研究所 | On-track correcting device of space-borne phased array transmitting antenna |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071870A (en) * | 2015-07-02 | 2015-11-18 | 北京理工大学 | Time slot design method for channel agility difference measurement |
| CN105071870B (en) * | 2015-07-02 | 2017-04-05 | 北京理工大学 | A kind of time slot method for designing for passage agile difference measurement |
| CN105021900A (en) * | 2015-07-02 | 2015-11-04 | 北京理工大学 | Channel agility difference measuring method for multi-channel measurement |
| CN105846917A (en) * | 2016-03-16 | 2016-08-10 | 太仓市同维电子有限公司 | Calibration system and calibration method thereof based on wireless test |
| CN106843051A (en) * | 2017-02-17 | 2017-06-13 | 上海星秒光电科技有限公司 | A kind of FPGA time-delay mechanisms and method |
| CN107528643B (en) * | 2017-09-04 | 2020-11-24 | 中国计量大学 | Multi-channel transmitter and automatic channel consistency error compensation method thereof |
| CN107528643A (en) * | 2017-09-04 | 2017-12-29 | 中国计量大学 | A kind of multichannel emitter and its passage consistency error auto compensatng method |
| CN110031809A (en) * | 2019-04-15 | 2019-07-19 | 北京电子工程总体研究所 | A kind of more receiving channel amplitude-phase consistency Calibration Methods of radar and readable storage medium storing program for executing |
| CN110031809B (en) * | 2019-04-15 | 2021-07-23 | 北京电子工程总体研究所 | Radar multi-receiving-channel amplitude-phase consistency calibration method and readable storage medium |
| CN110554331A (en) * | 2019-08-23 | 2019-12-10 | 武汉中科牛津波谱技术有限公司 | emission phase calibration system and method of nuclear magnetic resonance instrument |
| CN110554331B (en) * | 2019-08-23 | 2022-01-11 | 武汉中科牛津波谱技术有限公司 | Emission phase calibration system and method of nuclear magnetic resonance instrument |
| CN112583360A (en) * | 2021-02-25 | 2021-03-30 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
| CN112583360B (en) * | 2021-02-25 | 2021-05-04 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
| CN113092880A (en) * | 2021-03-04 | 2021-07-09 | 北京航空航天大学 | Multichannel array receiver amplitude-phase inconsistency detection method based on phase rotation |
| CN113092880B (en) * | 2021-03-04 | 2022-04-05 | 北京航空航天大学 | Multichannel array receiver amplitude-phase inconsistency detection method based on phase rotation |
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Application publication date: 20120620 |