WO2023103302A1 - 多路信号相干电路和射频信号源 - Google Patents

多路信号相干电路和射频信号源 Download PDF

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Publication number
WO2023103302A1
WO2023103302A1 PCT/CN2022/096581 CN2022096581W WO2023103302A1 WO 2023103302 A1 WO2023103302 A1 WO 2023103302A1 CN 2022096581 W CN2022096581 W CN 2022096581W WO 2023103302 A1 WO2023103302 A1 WO 2023103302A1
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signal
output
electrically connected
unit
channel
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PCT/CN2022/096581
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English (en)
French (fr)
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秦喜朋
何毅军
王悦
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普源精电科技股份有限公司
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Publication of WO2023103302A1 publication Critical patent/WO2023103302A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/028—Arrangements specific to the transmitter end

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a multi-channel signal coherent circuit and a radio frequency signal source.
  • the second is to use the frequency synthesis system of the phase-locked loop.
  • the problem with this method is that the part below the oscillation frequency is basically realized by the frequency division circuit, and the use of frequency division will lead to phase uncertainty.
  • the third is to output and couple a part of the signal at each port, and then perform down-conversion reception and intermediate frequency processing to obtain the phase information of each channel, but the existing problem is that the receiving and detecting phase system has a complex structure, is difficult to implement, and has high cost; and in During the real-time detection process, there is a large local oscillator signal in the receiving system, and the local oscillator signal is easily leaked back to the output of the signal source to form spurs, which is difficult to process.
  • the existing multi-channel signal coherent circuits have the problems of incompatibility with amplitude adjustment, phase adjustment, good stability, small spurs and simple structure.
  • the embodiments of the present application provide a multi-channel signal coherent circuit and a radio frequency signal source to solve at least one problem existing in the background art.
  • the embodiment of the present application provides a multi-channel signal coherent circuit, including:
  • the signal generation module receives the phase adjustment signal, and outputs a single signal under the control of the phase adjustment signal;
  • phase difference detection module the phase difference detection module is electrically connected to the at least two-way signal generation module, configured to detect the phase difference between the two-way signals and generate the phase adjustment signal.
  • the multi-channel signal coherent circuit further includes: at least two output calibration switches, the output calibration switches correspond to the signal generating modules one by one;
  • the output calibration switching switch includes a signal connection end, a first switching end and a second switching end, the signal connection end is electrically connected to the output end of the signal generation module; the first switching end is connected to the phase The input end of the difference detection module is electrically connected; the second switching end is electrically connected to the output end of the multi-channel signal coherent circuit.
  • the phase difference detection module includes:
  • a comparison branch the comparison branch is connected to the other single-channel signal
  • a detection unit the detection unit is electrically connected to the reference branch, and is electrically connected to the comparison branch; the detection unit is configured to generate the phase adjustment signal according to the two single-channel signals.
  • the reference branch includes: a first attenuation unit and a first amplification unit connected in series, and the first attenuation unit and the first amplification unit are configured to adjust an amplitude range of one of the single signals;
  • the comparison branch includes: a second attenuation unit and a second amplification unit connected in series, and the second attenuation unit and the second amplification unit are configured to adjust the amplitude range of the other single signal.
  • the detection unit includes:
  • a first frequency mixing subunit the first input terminal of the first frequency mixing subunit is electrically connected to the reference branch, and the second input terminal is electrically connected to the comparison branch;
  • a first acquisition subunit the input end of the first acquisition subunit is electrically connected to the output end of the first frequency mixing subunit;
  • a first processor the input end of the first processor is electrically connected to the output end of the first acquisition subunit, and the output end of the first processor is used as the output end of the detection unit to output the phase conditioning signal.
  • the reference branch includes: a second frequency mixing unit and a second acquisition unit; the first input terminal of the second frequency mixing unit is connected to one of the single-channel signals, and the second frequency mixing unit The second input end of the second input terminal is connected to the oscillator signal; the input end of the second acquisition unit is electrically connected to the output end of the second frequency mixing unit, and the output end of the second acquisition unit is used as the reference branch output terminal;
  • the comparison branch includes: a third frequency mixing unit and a third acquisition unit; the first input terminal of the third frequency mixing unit is connected to another channel of the single signal, and the second frequency mixing unit of the third frequency mixing unit The input end is connected to the oscillator signal; the input end of the third acquisition unit is electrically connected to the output end of the third frequency mixing unit, and the output end of the third acquisition unit is used as the output of the comparison branch. end;
  • the detection unit includes: a second processor, the first input end of the second processor is electrically connected to the output end of the reference branch, the second input end of the second processor is electrically connected to the comparison branch
  • the output terminal of the circuit is electrically connected, and the output terminal of the second processor is used as the output terminal of the detection unit to output the phase adjustment signal.
  • the reference branch includes: a fourth acquisition unit; an input terminal of the fourth acquisition unit is connected to one of the single-channel signals, and an output terminal of the fourth acquisition unit is used as the reference branch output terminal;
  • the comparison branch includes: a fifth acquisition unit; the input end of the fifth acquisition unit is connected to another single-channel signal, and the output end of the fifth acquisition unit is used as the output end of the comparison branch;
  • the detection unit includes: a third processor, the first input end of the third processor is electrically connected to the output end of the reference branch, the second input end of the third processor is electrically connected to the comparison branch
  • the output terminal of the circuit is electrically connected, and the output terminal of the third processor is used as the output terminal of the detection unit to output the phase adjustment signal.
  • the phase difference detection module also includes:
  • a channel switching switch includes a signal connection terminal and at least two switching terminals, the number of the switching terminals matches the number of the signal generating modules; the switching terminals match the output terminals of the signal generating modules Electrically connected; the signal connection terminal is electrically connected to the comparison branch, and provides the other single signal to the comparison branch.
  • the multi-channel signal coherent circuit also includes:
  • An additional calibration device at least two signal input terminals of the additional calibration device are electrically connected to at least two output terminals of the multi-channel signal coherent circuit; the control output terminal of the additional calibration device is connected to the multi-channel signal coherent circuit The additional control terminal is electrically connected; the additional calibration device is configured to compensate the phase variation of at least two single-channel signals.
  • the number of the phase difference detection module is at least one;
  • phase difference detection module If the number of the phase difference detection module is one, then all the signal generation modules are electrically connected to the phase difference detection module; the single signal output by one of the signal generation modules is used as a reference signal, and the other signals are generated The single-channel signal output by the module is used as a comparison signal;
  • phase difference detection modules If the number of the phase difference detection modules is at least two, one of the signal generation modules is electrically connected to all the phase difference detection modules, and the single signal output by it is used as a reference signal, and the other signals are generated
  • the single-channel signal output by the modules is used as a comparison signal; each of the phase difference detection modules is electrically connected to a part of the signal generation modules.
  • the embodiment of the present application further provides a radio frequency signal source, including: the multi-channel signal coherent circuit as described in any embodiment of the present application.
  • the embodiment of the present application provides a multi-channel signal coherent circuit.
  • the multi-channel signal coherent circuit includes a phase difference detection module and at least two signal generation modules.
  • the signal generation module receives the phase adjustment signal and outputs a single channel under the control of the phase adjustment signal.
  • Signal; the phase difference detection module is electrically connected to at least two signal generation modules, configured to detect the phase difference of the two signals and generate a phase adjustment signal.
  • the signals of each channel are independent of each other, and signals of different amplitudes can be output, and the signals of each channel are independently adjustable under the control of the phase adjustment signal, thereby realizing the functions of amplitude adjustment and phase adjustment.
  • the embodiment of the present application independently outputs each signal, and compares the phase difference after each signal is taken out, without using a frequency division circuit to divide the frequency of the signal, thus avoiding the phase uncertainty caused by the frequency division circuit for better stability.
  • the embodiment of the present application does not need to couple signals at the signal output end, and does not need to equip each channel with a detection and receiving device. Therefore, problems such as insertion loss, frequency response, and spurious caused by this will not be introduced. Therefore, the embodiments of the present application achieve the effects of compatible amplitude adjustment, phase adjustment, good stability, small spurs and simple structure.
  • FIG. 1 is a schematic structural diagram of a multi-channel signal coherent circuit provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of another multi-channel signal coherent circuit provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of another multi-channel signal coherent circuit provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of another multi-channel signal coherent circuit provided by the embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another multi-channel signal coherent circuit provided by the embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another multi-channel signal coherent circuit provided by the embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another multi-channel signal coherent circuit provided by the embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another multi-channel signal coherent circuit provided by the embodiment of the present application.
  • first, second, third etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one from the other. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application. When a second element, component, region, layer or section is discussed, it does not necessarily indicate that the present application must have a first element, component, region, layer or section.
  • FIG. 1 is a schematic structural diagram of a multi-channel signal coherent circuit provided in an embodiment of the present application.
  • the multi-channel signal coherent circuit includes: a phase difference detection module 200 and at least two signal generation modules 100 .
  • the signal generation module 100 receives the phase adjustment signal, and outputs a single signal under the control of the phase adjustment signal.
  • the phase difference detection module 200 is electrically connected to at least two signal generation modules 100 and is configured to detect the phase difference between the two signals and generate a phase adjustment signal.
  • the signal generation module 100 may be composed of hardware circuits, and is used to output a single signal.
  • the signal generating module 100 is the signal source of the multi-channel signal coherent circuit, and the number of the signal generating module 100 is N, where N ⁇ 2.
  • the N signal generation modules 100 independently output N-channel signals, therefore, all the signal generation modules 100 can be collectively referred to as independent N-channel signal sources.
  • the signal CH1-signal CHN represent independent signal source outputs of multiple channels.
  • the signal generation module 100 includes signal output devices for phase adjustment in various frequency ranges and amplitude ranges.
  • the phase difference detection module 200 detects the phase difference between the two signals means that one of the multiple signals is used as a calibration signal, and the other signals are compared with the calibration signal to obtain a phase difference and generate a phase adjustment signal accordingly.
  • the first signal is set as the calibration signal
  • the other signals are compared signals
  • the other signals are sequentially compared with the first signal, and the phase difference between each signal and the first signal can be obtained and based on this
  • the phase adjustment signal of each signal is obtained, and the phase adjustment of each signal is realized.
  • the signals of the various channels in the embodiment of the present application are independent of each other, and signals of different amplitudes can be output, and the signals of each channel are independently adjustable under the control of the phase adjustment signal, thereby realizing amplitude adjustment and phase adjustment.
  • the embodiment of the present application independently outputs each signal, and compares the phase difference after each signal is taken out, without using a frequency division circuit to divide the frequency of the signal, thus avoiding the phase uncertainty caused by the frequency division circuit for better stability.
  • the embodiment of the present application does not need to couple signals at the signal output end, and does not need to equip each channel with a detection and receiving device. Therefore, problems such as insertion loss, frequency response, and spurious caused by this will not be introduced. Therefore, the embodiments of the present application achieve the effects of compatible amplitude adjustment, phase adjustment, good stability, small spurs and simple structure.
  • the multi-channel signal coherent circuit further includes at least two output terminals 400 , the number of output terminals 400 is equal to the number of signal generation modules 100 , configured to output the multi-channel signals.
  • FIG. 2 is a schematic structural diagram of another multi-channel signal coherent circuit provided by an embodiment of the present application.
  • the multi-channel signal coherent circuit further includes: at least two output calibration switching switches 300 , and the output calibration switching switches 300 correspond to the signal generating modules 100 one-to-one.
  • the output calibration switching switch 300 includes a signal connection end, a first switching end and a second switching end, the signal connection end is electrically connected to the output end of the signal generation module 100; the first switching end is electrically connected to the input end of the phase difference detection module 200 connected; the second switching end is electrically connected to the output end of the multi-channel signal coherent circuit.
  • the signal connection end of the calibration switch can be connected to the first switching end, or can be connected to the second switching end. If the control signal connection terminal is connected to the first switch terminal, the signal can be output to the phase difference detection module 200; if the control signal connection terminal is connected to the second switch terminal, the signal can be output through the output terminal.
  • the embodiment of the present application facilitates adjustment and compensation of the signal phase by setting the output calibration switch 300 , and the setting method of the output calibration switch 300 is simple, easy to implement and low in cost.
  • FIG. 3 is a schematic structural diagram of another multi-channel signal coherent circuit provided in an embodiment of the present application.
  • the phase difference detection module 200 includes: a reference branch 210 , a comparison branch 220 and a detection unit 230 .
  • the reference branch 210 is connected to a single signal, for example, the reference branch 210 is connected to the first signal, and the reference branch 210 processes the first signal for subsequent phase comparison.
  • the comparison branch 220 is connected to another single signal, for example, the comparison branch 220 is connected to a second signal, and the comparison branch 220 processes the second signal for subsequent phase comparison.
  • the detection unit 230 is electrically connected to the reference branch 210 and is electrically connected to the comparison branch 220; the detection unit 230 is configured to generate a phase adjustment signal according to the two single-channel signals.
  • the detecting unit 230 receives the processed first channel signal CH1 and the second channel signal CH2, compares the two signals to obtain a phase difference, and generates a phase adjustment signal according to the phase difference.
  • FIG. 4 is a schematic structural diagram of another multi-channel signal coherent circuit provided in an embodiment of the present application.
  • the reference branch 210 includes: a first attenuation unit 211 and a first amplification unit 212 connected in series, and the first attenuation unit 211 and the first amplification unit 212 It is configured to adjust the amplitude range of a single signal to realize the amplitude processing of the calibration signal.
  • the comparison branch 220 includes: a second attenuation unit 221 and a second amplifying unit 222 connected in series, and the second attenuation unit 221 and the second amplifying unit 222 are configured to adjust the amplitude range of another single-channel signal, so as to realize the comparison of the compared signal magnitude processing.
  • the signal generation module 100 can generate signals with different amplitudes, the calibration signal and the compared signal may have different amplitudes.
  • the reference branch 210 by setting the reference branch 210 to include a first attenuation unit 211 and a first amplification unit 212 , and the comparison branch 220 to include a second attenuation unit 221 and a second amplification unit 222 , adjustments to signals of different amplitudes are realized.
  • the first attenuation unit 211 and the second attenuation unit 221 may be, for example, a digital control attenuation unit, an analog PIN attenuation unit, or the like.
  • the detection unit 230 includes: a first frequency mixing subunit 231 , a first acquisition subunit 232 , and a first processor 233 .
  • a first input terminal of the first frequency mixing subunit 231 is electrically connected to the reference branch 210 , and a second input terminal is electrically connected to the comparison branch 220 .
  • the input end of the first acquisition subunit 232 is electrically connected to the output end of the first frequency mixing subunit 231 .
  • the input terminal of the first processor 233 is electrically connected to the output terminal of the first acquisition subunit 232, and the output terminal of the first processor 233 is used as the output terminal of the detection unit 230 to output a phase adjustment signal.
  • the first frequency mixing subunit 231 is used to realize the phase comparison between the calibration signal and the compared signal.
  • the first frequency mixing subunit 231 performs analog multiplication between the calibration signal of the same frequency and the compared signal, and the phase difference is represented by a direct current output at the intermediate frequency.
  • the first acquisition sub-unit 232 is used to realize the acquisition and recording of analog-to-digital signals.
  • the first acquisition subunit 232 is an ADC acquisition module.
  • the first collection subunit 232 is a high-precision ADC collection module, so as to realize high-precision data collection.
  • the first collection subunit 232 is also integrated with a filtering function, which can realize data filtering and further improve the accuracy of data collection.
  • the first processor 233 receives the digital signal sent by the first acquisition subunit 232, and generates a phase adjustment signal after digital processing.
  • the technical solution shown in FIG. 4 can be called a frequency mixing detection solution. Due to the limitation of the signal amplitude by the first frequency mixing subunit 231, it is necessary to use the first frequency mixing subunit 231 to perform frequency mixing according to the amplitude change Range, the signal is attenuated by the attenuation unit (including the first attenuation unit 211 and the second attenuation unit 221 ), or the signal is amplified by the amplifying unit (including the first amplifying unit 212 and the second amplifying unit 222 ). It can be seen that the complexity of the frequency mixing detection scheme is low and easy to implement.
  • the mixed frequency detection scheme can handle a wide frequency range.
  • the first frequency mixing subunit 231 uses analog multiplication, its processing accuracy mainly depends on the accuracy of the first acquisition subunit 232, so the coherence of multiple signals can be improved by improving the accuracy of the first acquisition subunit 232 accuracy of the circuit.
  • FIG. 5 is a schematic structural diagram of another multi-channel signal coherent circuit provided in an embodiment of the present application.
  • the reference branch 210 includes: a second frequency mixing unit 213 and a second acquisition unit 214; the first input terminal of the second frequency mixing unit 213 is connected to One road single-channel signal, the second input end of the second frequency mixing unit 213 is connected to the oscillator signal; the input end of the second acquisition unit 214 is electrically connected with the output end of the second frequency mixing unit 213, and the output of the second acquisition unit 214 terminal as the output terminal of the reference branch 210.
  • the comparison branch 220 includes: a third frequency mixing unit 223 and a third acquisition unit 224; the first input terminal of the third frequency mixing unit 223 is connected to another single-channel signal, and the second input terminal of the third frequency mixing unit 223 is connected to The input of the oscillator signal; the input of the third acquisition unit 224 is electrically connected to the output of the third mixing unit 223, and the output of the third acquisition unit 224 is used as the output of the comparison branch 220.
  • the detection unit 230 includes: a second processor 234, the first input end of the second processor 234 is electrically connected to the output end of the reference branch 210, the second input end of the second processor 234 is connected to the output end of the comparison branch 220 The output end of the second processor 234 is used as the output end of the detection unit 230 to output a phase adjustment signal.
  • the phase difference detection module 200 further includes an oscillator 250, and the oscillator 250 is used to generate an oscillator signal to provide a frequency-mixed calibration signal.
  • the technical solution shown in FIG. 5 can also be called a two-channel receiving solution.
  • the two-channel receiving scheme is similar to the down-converting receiving device, specifically, the calibration signal is mixed with the oscillator signal shared by the compared signal, and the calibration signal is converted to a lower frequency by the second mixing unit 213, and then passed through the second acquisition
  • the digital acquisition of the unit 214 converts the calibration signal into a baseband signal; at the same time, the signal to be compared is converted to a lower frequency by the third frequency mixing unit 223, and then the digital acquisition by the third acquisition unit 224 will be compared
  • the signal is down-converted to a baseband signal.
  • the phase difference between the calibration signal and the compared signal can be obtained by comparing the two baseband signals through the second processor 234 .
  • the two-channel receiving scheme can handle a wide frequency range. And, since the calibration signal and the compared signal are respectively subjected to frequency mixing and digital acquisition, the two-channel receiving scheme can handle a larger amplitude range.
  • FIG. 6 is a schematic structural diagram of another multi-channel signal coherent circuit provided in an embodiment of the present application.
  • the reference branch 210 includes: a fourth acquisition unit 215; the input end of the fourth acquisition unit 215 is connected to a single-channel signal, and the fourth acquisition unit 215 The output terminal of is used as the output terminal of the reference branch 210.
  • the comparison branch 220 includes: a fifth collection unit 225 ;
  • the detection unit 230 includes: a third processor 235, the first input end of the third processor 235 is electrically connected to the output end of the reference branch 210, the second input end of the third processor 235 is connected to the output end of the comparison branch 220 The output end of the third processor 235 is used as the output end of the detection unit 230 to output a phase adjustment signal.
  • the technical solution shown in FIG. 6 is similar to the two-channel receiving solution, and both output the calibration signal and the compared signal to the processor (the second processor 234 or the third processor 235), the difference is that There is no need to down-convert the calibration signal and the compared signal. Therefore, the technical solution shown in FIG. 6 can be called a two-channel sampling comparison solution.
  • the two-channel sampling comparison scheme is to directly digitally collect the calibration signal and the compared signal, and digitally compare the phases in the third processor 235 .
  • the two-channel sampling comparison scheme has a simple structure and low cost, and can be applied to occasions with relatively low requirements.
  • the reference branch 210 in the two-channel receiving scheme and the two-channel sampling comparison scheme further includes a first attenuation unit 211 and a first amplification unit 212, to Adjust the amplitude of the calibration signal;
  • the comparison branch 220 also includes a second attenuation unit 221 and a second amplification unit 222 to adjust the amplitude of the compared signal.
  • Such setting is beneficial to improve the amplitude range and stability of multi-channel signal coherence.
  • the phase difference detection module 200 also includes: a channel switching switch 240, the channel switching switch 240 includes a signal connection terminal and at least two switching terminals, the switching terminal The number matches the number of signal generating modules 100; the switching end is electrically connected to the output end of the matched signal generating module 100; In this way, the multi-channel compared signals except the calibration signal can be compared with the calibration signal through the channel switching switch 240, which is beneficial to realize the phase adjustment function by adjusting the phase of each channel, and finally realize the phase of each channel signal align.
  • FIG. 7 is a schematic structural diagram of another multi-channel signal coherent circuit provided in an embodiment of the present application.
  • the multi-channel signal coherent circuit further includes: an additional calibration device 500, at least two signal input terminals of the additional calibration device 500 and at least two signal input terminals of the multi-channel signal coherent circuit
  • the two output terminals 400 are electrically connected;
  • the control output terminal of the additional calibration device 500 is electrically connected to the additional control terminal 600 of the multi-channel signal coherent circuit;
  • the additional calibration device 500 is configured to compensate the phase variation of at least two single-channel signals.
  • an attenuation unit (which can be set separately or in the additional calibration device 500) is used to adjust the amplitude of the compared signal.
  • an additional The calibration device 500 measures the phase variation of the compared signal relative to the calibration signal, and forms a phase variation curve of the compared signal with amplitude variation.
  • the additional calibration device 500 detects a change in the amplitude of the compared signal, it will reversely compensate for the phase adjustment of the compared signal according to the phase change corresponding to the amplitude change of the curve.
  • Such setting can solve the problem of the channel phase change caused by the amplitude change, and can be applied to the situation where the port phase difference detection range is limited or the amplitude adjustment part is after the phase difference detection.
  • the number of phase difference detection modules 200 is at least one. If the quantity of phase difference detection module 200 is one, then all signal generating modules 100 are electrically connected with phase difference detecting module 200, wherein the single-channel signal output by one-way signal generating module 100 is used as a reference signal, and the single-channel signal output by other signal generating modules 100 signal as a comparison signal.
  • FIG. 8 is a schematic structural diagram of another multi-channel signal coherent circuit provided by the embodiment of the present application.
  • the quantity of phase difference detection module 200 is at least two, then wherein one road signal generation module 100 is electrically connected with all phase difference detection modules 200, and the single signal of its output is used as reference signal, other signal generation module 100 outputs
  • the single-channel signal is used as a comparison signal; each phase difference detection module 200 is electrically connected to a part of the signal generation module 100 .
  • the first channel signal CH1 is used as the calibration signal and is multiplexed to each phase difference detection module 200 .
  • the signals CH2-CH8 are respectively compared with the first signal CH1 in the first phase difference detection module 200, and the signals CH9-CH16 are respectively compared with the first signal CH1 in the second phase difference detection module 200, and so on.
  • phase difference detection module 200 illustrate several specific configurations of the phase difference detection module 200 , and are not intended to limit the present application.
  • the phase difference detection module 200 provided in the embodiment of the present application is not limited to the above solutions, and any structure capable of simulating or indirectly reflecting the phase difference of different channels is within the protection scope of the present application.
  • the embodiment of the present application also provides a radio frequency signal source
  • the radio frequency signal source includes a multi-channel signal coherent circuit as provided in any embodiment of the present application, the technical principle and the effect thereof are similar and will not be repeated here.
  • the radio frequency signal source can be applied to MIMO system testing, multi-channel cabinets, and the like.

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Abstract

本申请实施例公开了一种多路信号相干电路和射频信号源。多路信号相干电路包括：至少两路信号产生模块，所述信号产生模块接收相位调节信号，在所述相位调节信号的控制下输出单路信号；相位差检测模块，所述相位差检测模块与所述至少两路信号产生模块电连接，配置为检测其中两路信号的相位差并生成所述相位调节信号。

Description

多路信号相干电路和射频信号源
相关申请的交叉引用
本申请要求于2021年12月09日申请的，申请号为202111496658.2，名称为“多路信号相干电路和射频信号源”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种多路信号相干电路和射频信号源。
背景技术
随着量子通信领域的快速发展，多通道信号相干的射频信号源系统应用需求较大。在现有技术中，有多种方式可以实现多路信号相干：
一是，通过单路信号源输出功分实现多路信号相干；该方式存在的问题是，功分存在幅度无法调节、相位无法调节，使得应用的局限性较大。二是，采用锁相环的频率合成系统，该方式存在的问题是，在振荡频率以下的部分基本由分频电路实现，分频的使用会导致相位的不确定性。三是，通过在各端口输出耦合一部分信号，然后进行下变频接收和中频处理，得到各通道的相位信息，但是存在的问题是，接收检测相位系统结构复杂、实现难度大、成本高；且在实时检测过程中，接收系统存在大幅度的本振信号，该本振信号容易反向泄露到信号源的输出形成杂散，处理难度大。
综上所述，现有的多路信号相干电路存在无法兼容幅度调节、相位调节、稳定性好、杂散小和结构简单的问题。
发明内容
有鉴于此，本申请实施例为解决背景技术中存在的至少一个问题而提供一种多路信号相干电路和射频信号源。
第一方面，本申请实施例提供了一种多路信号相干电路，包括：
至少两路信号产生模块，所述信号产生模块接收相位调节信号，在所述相位调节信号的控制下输出单路信号；
相位差检测模块，所述相位差检测模块与所述至少两路信号产生模块电连接，配置为检测其中两路信号的相位差并生成所述相位调节信号。
可选地，多路信号相干电路还包括：至少两个输出校准切换开关，所述输出校准切换开关与所述信号产生模块一一对应；
其中，所述输出校准切换开关包括信号连接端、第一切换端和第二切换端，所述信号 连接端与所述信号产生模块的输出端电连接；所述第一切换端与所述相位差检测模块的输入端电连接；所述第二切换端与所述多路信号相干电路的输出端电连接。
可选地，所述相位差检测模块包括：
参考支路，所述参考支路接入一路所述单路信号；
比较支路，所述比较支路接入另一路所述单路信号；
检测单元，所述检测单元与所述参考支路电连接，且与所述比较支路电连接；所述检测单元配置为根据两路所述单路信号生成所述相位调节信号。
可选地，所述参考支路包括：串联连接的第一衰减单元和第一放大单元，所述第一衰减单元和所述第一放大单元配置为调节一路所述单路信号的幅度范围；
所述比较支路包括：串联连接的第二衰减单元和第二放大单元，所述第二衰减单元和所述第二放大单元配置为调节另一路所述单路信号的幅度范围。
可选地，所述检测单元包括：
第一混频子单元，所述第一混频子单元的第一输入端与所述参考支路电连接，第二输入端与所述比较支路电连接；
第一采集子单元，所述第一采集子单元的输入端与所述第一混频子单元的输出端电连接；
第一处理器，所述第一处理器的输入端与所述第一采集子单元的输出端电连接，所述第一处理器的输出端作为所述检测单元的输出端，输出所述相位调节信号。
可选地，所述参考支路包括：第二混频单元和第二采集单元；所述第二混频单元的第一输入端接入一路所述单路信号，所述第二混频单元的第二输入端接入振荡器信号；所述第二采集单元的输入端与所述第二混频单元的输出端电连接，所述第二采集单元的输出端作为所述参考支路的输出端；
所述比较支路包括：第三混频单元和第三采集单元；所述第三混频单元的第一输入端接入另一路所述单路信号，所述第三混频单元的第二输入端接入所述振荡器信号；所述第三采集单元的输入端与所述第三混频单元的输出端电连接，所述第三采集单元的输出端作为所述比较支路的输出端；
所述检测单元包括：第二处理器，所述第二处理器的第一输入端与所述参考支路的输出端电连接，所述第二处理器的第二输入端与所述比较支路的输出端电连接，所述第二处理器的输出端作为所述检测单元的输出端，输出所述相位调节信号。
可选地，所述参考支路包括：第四采集单元；所述第四采集单元的输入端接入一路所 述单路信号，所述第四采集单元的输出端作为所述参考支路的输出端；
所述比较支路包括：第五采集单元；所述第五采集单元的输入端接入另一路所述单路信号，所述第五采集单元的输出端作为所述比较支路的输出端；
所述检测单元包括：第三处理器，所述第三处理器的第一输入端与所述参考支路的输出端电连接，所述第三处理器的第二输入端与所述比较支路的输出端电连接，所述第三处理器的输出端作为所述检测单元的输出端，输出所述相位调节信号。
可选地，所述相位差检测模块还包括：
通道切换开关，所述通道切换开关包括信号连接端和至少两个切换端，所述切换端的数量与所述信号产生模块的数量匹配；所述切换端与匹配的所述信号产生模块的输出端电连接；所述信号连接端与所述比较支路电连接，向所述比较支路提供另一路所述单路信号。
可选地，多路信号相干电路还包括：
附加校准设备，所述附加校准设备的至少两个信号输入端与所述多路信号相干电路的至少两个输出端电连接；所述附加校准设备的控制输出端与所述多路信号相干电路的附加控制端电连接；所述附加校准设备配置为对至少两路所述单路信号的相位变化量进行补偿。
可选地，所述相位差检测模块的数量为至少一个；
若所述相位差检测模块的数量为一个，则全部所述信号产生模块与所述相位差检测模块电连接；其中一路所述信号产生模块输出的单路信号作为参考信号，其他所述信号产生模块输出的单路信号作为比较信号；
若所述相位差检测模块的数量为至少两个，则其中一路所述信号产生模块与全部所述相位差检测模块电连接，其输出的所述单路信号作为参考信号，其他所述信号产生模块输出的单路信号作为比较信号；每个所述相位差检测模块与部分所述信号产生模块电连接。
第二方面，本申请实施例还提供了一种射频信号源，包括：如本申请任意实施例所述的多路信号相干电路。
本申请实施例提供了一种多路信号相干电路，多路信号相干电路包括相位差检测模块和至少两路信号产生模块，信号产生模块接收相位调节信号，在相位调节信号的控制下输出单路信号；相位差检测模块与至少两路信号产生模块电连接，配置为检测其中两路信号的相位差并生成相位调节信号。第一方面，本申请实施例各路信号相互独立，可以输出不同幅度的信号，且各路的信号在相位调节信号的控制下独立可调，从而实现了幅度调节、相位调节的功能。第二方面，本申请实施例通过独立输出各路 信号，且各路信号取出后进行相位差比较，无需采用分频电路对信号分频，从而避免了采用分频电路带来的相位的不确定性，有利于实现较好的稳定性。第三方面，本申请实施例无需在信号输出端耦合信号，也无需在每个通道配备检测接收装置，因此，不会引入由此带来的插损、频响、杂散等问题。因此，本申请实施例实现了兼容幅度调节、相位调节、稳定性好、杂散小和结构简单的效果。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本申请实施例提供的一种多路信号相干电路的结构示意图；
图2为本申请实施例提供的另一种多路信号相干电路的结构示意图；
图3为本申请实施例提供的又一种多路信号相干电路的结构示意图；
图4为本申请实施例提供的又一种多路信号相干电路的结构示意图；
图5为本申请实施例提供的又一种多路信号相干电路的结构示意图；
图6为本申请实施例提供的又一种多路信号相干电路的结构示意图；
图7为本申请实施例提供的又一种多路信号相干电路的结构示意图；
图8为本申请实施例提供的又一种多路信号相干电路的结构示意图。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
在此使用的术语的目的仅在于描述具体实施例并且不作为本申请的限制。在此使用时，单数形式的“一”、“一个”和“所述/该”也可能意图包括复数形式，除非上下文清楚指出另外的方式。还应明白术语“包括”，当在该说明书中使用时，确定所述特征、整数、步骤、操作、元件和/或部件的存在，但不排除一个或更多其它的特征、整数、步骤、操作、元件、部件和/或组的存在或添加。在此使用时，术语“和/或”包括相关所列项目的任何及所有组合。
应当明白，当结构被称为“连接到”或“耦合到”其它结构时，其可以直接地连接或耦合到其它结构，或者可以存在居间的结构。相反，当结构被称为“直接连接到”或“直接耦合到”其它结构时，则不存在居间的结构。应当明白，尽管可使用术语第 一、第二、第三等描述各种元件、部件、区、层和/或部分，这些元件、部件、区、层和/或部分不应当被这些术语限制。这些术语仅仅用来区分其中的一个与另一个。因此，在不脱离本申请教导之下，下面讨论的第一元件、部件、区、层或部分可表示为第二元件、部件、区、层或部分。而当讨论的第二元件、部件、区、层或部分时，并不表明本申请必然存在第一元件、部件、区、层或部分。
本申请实施例提供了一种多路信号相干电路。图1为本申请实施例提供的一种多路信号相干电路的结构示意图。参见图1，该多路信号相干电路包括：相位差检测模块200和至少两路信号产生模块100。信号产生模块100接收相位调节信号，在相位调节信号的控制下输出单路信号。相位差检测模块200与至少两路信号产生模块100电连接，配置为检测其中两路信号的相位差并生成相位调节信号。
其中，信号产生模块100可以由硬件电路构成，用以输出单路信号。信号产生模块100即多路信号相干电路的信号源，信号产生模块100的数量为N个，N≥2。N个信号产生模块100独立输出N路信号，因此，全部信号产生模块100可以统称为独立N通道信号源。相应地，信号CH1-信号CHN，表示多个通道的独立信号源输出，示例性地，信号产生模块100包括各种频率范围、幅度范围的相位调节的信号输出装置。
相位差检测模块200检测其中两路信号的相位差是指，以多路信号中的一路作为校准信号，其他路信号与该校准信号进行相位比较，得到相位差并据此生成相位调节信号。示例性地，设置第一路信号为校准信号，其他路信号为被比较信号，其他路信号依次与第一路信号进行相位比较，能够得到各路信号与第一路信号的相位差并据此得到各路信号的相位调节信号，实现对各路信号的相位调节。
由此可见，第一方面，本申请实施例各路信号相互独立，可以输出不同幅度的信号，且各路的信号在相位调节信号的控制下独立可调，从而实现了幅度调节、相位调节的功能。第二方面，本申请实施例通过独立输出各路信号，且各路信号取出后进行相位差比较，无需采用分频电路对信号分频，从而避免了采用分频电路带来的相位的不确定性，有利于实现较好的稳定性。第三方面，本申请实施例无需在信号输出端耦合信号，也无需在每个通道配备检测接收装置，因此，不会引入由此带来的插损、频响、杂散等问题。因此，本申请实施例实现了兼容幅度调节、相位调节、稳定性好、杂散小和结构简单的效果。
继续参见图1，多路信号相干电路还包括至少两个输出端400，输出端400的数量与信号产生模块100的数量相等，配置为将多路信号输出。
图2为本申请实施例提供的另一种多路信号相干电路的结构示意图。参见图2，在上述各实施例的基础上，可选地，多路信号相干电路还包括：至少两个输出校准切换开关300，输出校准切换开关300与信号产生模块100一一对应。其中，输出校准切换开关300包括信号连接端、第一切换端和第二切换端，信号连接端与信号产生模块100的输出端电连接；第一切换端与相位差检测模块200的输入端电连接；第二切换端与多路信号相干电路的输出端电连接。其中，校准切换开关的信号连接端可以与第一切换端连接，也可以与第二切换端连接。若控制信号连接端与第一切换端连接，能够将该路信号输出至相位差检测模块200；若控制信号连接端与第二切换端连接，能够将该路信号通过输出端输出。示例性地，控制第一路信号对应的校准切换开关的信号连接端和第一切换端连接，控制第二路信号对应的校准切换开关的信号连接端和第一切换端连接，这样可以实现第一路信号和第二路信号的相位差比较，以第一路信号为校准信号，第二路信号为被比较信号，经相位差检测模块200的处理生成第二路信号的相位调节信号，对第二路信号产生模块100进行相位调节和相位补偿。由此可见，本申请实施例通过设置输出校准切换开关300，有利于实现对信号相位的调节和补偿，且输出校准切换开关300的设置方式简单，易于实现且成本较低。
图3为本申请实施例提供的又一种多路信号相干电路的结构示意图。参见图3，在上述各实施例的基础上，可选地，相位差检测模块200包括：参考支路210、比较支路220和检测单元230。参考支路210接入一路单路信号，示例性地，参考支路210接入第一路信号，该参考支路210对第一路信号进行处理，用于后续相位比较。比较支路220接入另一路单路信号，示例性地，比较支路220接入第二路信号，该比较支路220对第二路信号进行处理，用于后续相位比较。检测单元230与参考支路210电连接，且与比较支路220电连接；检测单元230配置为根据两路单路信号生成相位调节信号。示例性地，检测单元230接收经处理的第一路信号CH1和第二路信号CH2，对两路信号进行比较，得到相位差，并根据该相位差生成相位调节信号。
在上述各实施例中，参考支路210、比较支路220和检测单元230的设置方式有多种，下面就其中的几种进行说明，但不作为对本申请的限定。在实际应用中，可以根据需要采用不同的设置方式。
图4为本申请实施例提供的又一种多路信号相干电路的结构示意图。参见图4，在本申请的一种实施方式中，可选地，参考支路210包括：串联连接的第一衰减单元211和第一放大单元212，第一衰减单元211和第一放大单元212配置为调节一路单路信号的幅度范围，以实现对校准信号的幅度处理。比较支路220包括：串联连接的第二衰减单元221 和第二放大单元222，第二衰减单元221和第二放大单元222配置为调节另一路单路信号的幅度范围，以实现对被比较信号的幅度处理。其中，由于信号产生模块100能够产生不同幅度的信号，因而校准信号和被比较信号的幅度可能不同。本申请实施例通过设置参考支路210包括第一衰减单元211和第一放大单元212、比较支路220包括第二衰减单元221和第二放大单元222，实现了对不同幅度的信号调节。示例性地，第一衰减单元211和第二衰减单元221例如可以是数控衰减单元、模拟PIN衰减单元等。
继续参见图4，在本申请的一种实施方式中，可选地，检测单元230包括：第一混频子单元231、第一采集子单元232和第一处理器233。第一混频子单元231的第一输入端与参考支路210电连接，第二输入端与比较支路220电连接。第一采集子单元232的输入端与第一混频子单元231的输出端电连接。第一处理器233的输入端与第一采集子单元232的输出端电连接，第一处理器233的输出端作为检测单元230的输出端，输出相位调节信号。
其中，第一混频子单元231用以实现对校准信号和被比较信号的相位比较。示例性地，第一混频子单元231同频频率的校准信号和被比较信号进行模拟相乘，以中频输出的直流表示相位差。
第一采集子单元232用以实现模拟转数字的信号采集和记录。示例性地，第一采集子单元232为ADC采集模块。可选地，第一采集子单元232为高精度ADC采集模块，以实现高精度的数据采集。可选地，第一采集子单元232还集成有滤波功能，能够实现数据滤波，进一步提升数据采集的精度。
第一处理器233接收第一采集子单元232发送的数字信号，经数字处理后生成相位调节信号。
由此可见，图4所示的技术方案可以称为混频检测方案，由于第一混频子单元231对信号幅度的限制，需要在采用第一混频子单元231进行混频之前根据幅度变化范围，通过衰减单元(包括第一衰减单元211和第二衰减单元221)对信号进行衰减，或者通过放大单元(包括第一放大单元212和第二放大单元222)对信号进行放大。由此可见，混频检测方案的复杂度低、易于实现。且由于第一混频子单元231能够对频率范围较宽的信号的进行混频，因此，混频检测方案可处理的频率范围宽。在一些实施例中，由于第一混频子单元231采用模拟乘法，其处理精度主要依赖第一采集子单元232的精度，因此可以通过提升第一采集子单元232的精度来提升多路信号相干电路的精度。
图5为本申请实施例提供的又一种多路信号相干电路的结构示意图。参见图5，在本申请的一种实施方式中，可选地，参考支路210包括：第二混频单元213和第二采集单元214；第二混频单元213的第一输入端接入一路单路信号，第二混频单元213的第二输入端接入振荡器信号；第二采集单元214的输入端与第二混频单元213的输出端电连接，第二采集单元214的输出端作为参考支路210的输出端。比较支路220包括：第三混频单元223和第三采集单元224；第三混频单元223的第一输入端接入另一路单路信号，第三混频单元223的第二输入端接入振荡器信号；第三采集单元224的输入端与第三混频单元223的输出端电连接，第三采集单元224的输出端作为比较支路220的输出端。检测单元230包括：第二处理器234，第二处理器234的第一输入端与参考支路210的输出端电连接，第二处理器234的第二输入端与比较支路220的输出端电连接，第二处理器234的输出端作为检测单元230的输出端，输出相位调节信号。
其中，相位差检测模块200还包括振荡器250，振荡器250用以产生振荡器信号，提供混频的校准信号。由此可见，与混频检测方案不同的是，参考支路210和比较支路220均与振荡器信号进行混频，因此，图5所示的技术方案也可以称为两通道接收方案。两通道接收方案类似于下变频接收装置，具体地，校准信号和被比较信号共用的振荡器信号混频，通过第二混频单元213将校准信号变换到较低的频率，然后通过第二采集单元214的数字化采集，将校准信号数字化下变频为基带信号；同时，通过第三混频单元223将被比较信号变换到较低的频率，然后通过第三采集单元224的数字化采集，将被比较信号下变频为基带信号。两路基带信号通过第二处理器234进行比较可获得校准信号和被比较信号的相位差。与混频检测方案类似，由于第二混频单元213和第三混频单元223能够对频率范围较宽的信号进行混频，因此两通道接收方案可处理的频率范围宽。以及，由于校准信号和被比较信号分别进行混频和数字采集，因此两通道接收方案可处理的幅度范围较大。
图6为本申请实施例提供的又一种多路信号相干电路的结构示意图。参见图6，在本申请的一种实施方式中，可选地，参考支路210包括：第四采集单元215；第四采集单元215的输入端接入一路单路信号，第四采集单元215的输出端作为参考支路210的输出端。比较支路220包括：第五采集单元225；第五采集单元225的输入端接入另一路单路信号，第五采集单元225的输出端作为比较支路220的输出端。检测单元230包括：第三处理器235，第三处理器235的第一输入端与参考支路210的输出端电连接，第三处理器235的第二输入端与比较支路220的输出端电连接，第三处理器235的输出端作为检测单元230的输出端，输出相位调节信号。
由此可见，图6所示的技术方案与两通道接收方案类似，均是将校准信号和被比较信号输出至处理器(第二处理器234或第三处理器235)，不同之处在于，无需将校准信号和被比较信号进行下变频，因此，图6所示的技术方案可以称为两通道采样比较方案。两通道采样比较方案是将校准信号和被比较信号直接进行数字化采集，在第三处理器235中进行数字化比较相位。与两通道接收方案相比，两通道采样比较方案的结构简单，成本较低，可应用于要求相对较低的场合。
继续参见图5和图6，可选地，与混频检测方案类似，两通道接收方案和两通道采样比较方案中的参考支路210还包括第一衰减单元211和第一放大单元212，以对校准信号进行幅度调整；比较支路220还包括第二衰减单元221和第二放大单元222，以对被比较信号进行幅度调整。这样设置，有利于提升多路信号相干的幅度范围和稳定性。
结合图3-图6，在上述各实施例的基础上，可选地，相位差检测模块200还包括：通道切换开关240，通道切换开关240包括信号连接端和至少两个切换端，切换端的数量与信号产生模块100的数量匹配；切换端与匹配的信号产生模块100的输出端电连接；信号连接端与比较支路220电连接，向比较支路220提供另一路单路信号。这样设置，可以将除了校准信号以外的多路被比较信号通过通道切换开关240，依次与校准信号进行相位比较，从而有利于通过调节各个通道的相位实现相位调节功能，最终实现各个通道信号的相位对齐。
图7为本申请实施例提供的又一种多路信号相干电路的结构示意图。参见图7，在上述各实施例的基础上，可选地，多路信号相干电路还包括：附加校准设备500，附加校准设备500的至少两个信号输入端与多路信号相干电路的至少两个输出端400电连接；附加校准设备500的控制输出端与多路信号相干电路的附加控制端600电连接；附加校准设备500配置为对至少两路单路信号的相位变化量进行补偿。
示例性地，假设校准信号的幅度不变，采用衰减单元(可以是另外单独设置，也可以设置于附加校准设备500内)调节被比较信号的幅度，当被比较信号的幅度变化时，用附加校准设备500测量出被比较信号相对于校准信号的相位的变化量，形成一条被比较信号随幅度变化相位变化量曲线。这样，当附加校准设备500检测到被比较信号的幅度发生变化时，根据曲线幅度变化量对应的相位变化量，反补偿到被比较信号的相位调节中去。这样设置，可以解决幅度变化引起的通道相位变化的问题，可以应用于端口相位差检测幅度受限的情况下或幅度调节部分在相位差检测之后的情况。
在上述各实施例的基础上，可选地，如图1-图7所示，相位差检测模块200的数量为 至少一个。若相位差检测模块200的数量为一个，则全部信号产生模块100与相位差检测模块200电连接，其中一路信号产生模块100输出的单路信号作为参考信号，其他信号产生模块100输出的单路信号作为比较信号。
图8为本申请实施例提供的又一种多路信号相干电路的结构示意图。参见图8，若相位差检测模块200的数量为至少两个，则其中一路信号产生模块100与全部相位差检测模块200电连接，其输出的单路信号作为参考信号，其他信号产生模块100输出的单路信号作为比较信号；每个相位差检测模块200与部分信号产生模块100电连接。这样设置，有利于解决通道数比较多，多路信号依次进行相位差比较的效率较低的问题。示例性地，以第一路信号CH1作为校准信号公分多路连接到各相位差检测模块200。信号CH2-CH8在第一个相位差检测模块200分别于第一路信号CH1进行比较，信号CH9-CH16在第二相位差检测模块200分别于第一路信号CH1进行比较，依次类推。
需要说明的是，以上各实施例示例性地示出了几种相位差检测模块200的具体设置方式，并非对本申请的限定。本申请实施例提供的相位差检测模块200并不局限于上述几种方案，凡是能够模拟或间接反应不同通道相位差量的结构均在本申请的保护范围之内。
本申请实施例还提供了一种射频信号源，该射频信号源包括如本申请任意实施例所提供的多路信号相干电路，其技术原理和产生的效果类似，不再赘述。示例性地，该射频信号源可应用于MIMO系统测试、多通道机柜等。
需要说明的是，本申请提供的各实施例属于同一构思；各实施例所记载的技术方案中各技术特征之间，在不冲突的情况下，可以任意组合。注意，上述仅为本申请的实施例及所运用技术原理。本领域技术人员会理解，本申请不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本申请的保护范围。因此，虽然通过以上实施例对本申请进行了较为详细的说明，但是本申请不仅仅限于以上实施例，在不脱离本申请构思的情况下，还可以包括更多其他等效实施例，而本申请的范围由所附的权利要求范围决定。

Claims (11)

  1. 一种多路信号相干电路，包括：
    至少两路信号产生模块，所述信号产生模块接收相位调节信号，在所述相位调节信号的控制下输出单路信号；
    相位差检测模块，所述相位差检测模块与所述至少两路信号产生模块电连接，配置为检测其中两路信号的相位差并生成所述相位调节信号。
  2. 根据权利要求1所述的多路信号相干电路，其中，还包括：至少两个输出校准切换开关，所述输出校准切换开关与所述信号产生模块一一对应；
    其中，所述输出校准切换开关包括信号连接端、第一切换端和第二切换端，所述信号连接端与所述信号产生模块的输出端电连接；所述第一切换端与所述相位差检测模块的输入端电连接；所述第二切换端与所述多路信号相干电路的输出端电连接。
  3. 根据权利要求1所述的多路信号相干电路，其中，所述相位差检测模块包括：
    参考支路，所述参考支路接入一路所述单路信号；
    比较支路，所述比较支路接入另一路所述单路信号；
    检测单元，所述检测单元与所述参考支路电连接，且与所述比较支路电连接；所述检测单元配置为根据两路所述单路信号生成所述相位调节信号。
  4. 根据权利要求3所述的多路信号相干电路，其中，
    所述参考支路包括：串联连接的第一衰减单元和第一放大单元，所述第一衰减单元和所述第一放大单元配置为调节一路所述单路信号的幅度范围；
    所述比较支路包括：串联连接的第二衰减单元和第二放大单元，所述第二衰减单元和所述第二放大单元配置为调节另一路所述单路信号的幅度范围。
  5. 根据权利要求3所述的多路信号相干电路，其中，所述检测单元包括：
    第一混频子单元，所述第一混频子单元的第一输入端与所述参考支路电连接，第二输入端与所述比较支路电连接；
    第一采集子单元，所述第一采集子单元的输入端与所述第一混频子单元的输出端电连接；
    第一处理器，所述第一处理器的输入端与所述第一采集子单元的输出端电连接，所述第一处理器的输出端作为所述检测单元的输出端，输出所述相位调节信号。
  6. 根据权利要求3所述的多路信号相干电路，其中，
    所述参考支路包括：第二混频单元和第二采集单元；所述第二混频单元的第一输入端接入一路所述单路信号，所述第二混频单元的第二输入端接入振荡器信号；所述第二采集 单元的输入端与所述第二混频单元的输出端电连接，所述第二采集单元的输出端作为所述参考支路的输出端；
    所述比较支路包括：第三混频单元和第三采集单元；所述第三混频单元的第一输入端接入另一路所述单路信号，所述第三混频单元的第二输入端接入所述振荡器信号；所述第三采集单元的输入端与所述第三混频单元的输出端电连接，所述第三采集单元的输出端作为所述比较支路的输出端；
    所述检测单元包括：第二处理器，所述第二处理器的第一输入端与所述参考支路的输出端电连接，所述第二处理器的第二输入端与所述比较支路的输出端电连接，所述第二处理器的输出端作为所述检测单元的输出端，输出所述相位调节信号。
  7. 根据权利要求3所述的多路信号相干电路，其中，
    所述参考支路包括：第四采集单元；所述第四采集单元的输入端接入一路所述单路信号，所述第四采集单元的输出端作为所述参考支路的输出端；
    所述比较支路包括：第五采集单元；所述第五采集单元的输入端接入另一路所述单路信号，所述第五采集单元的输出端作为所述比较支路的输出端；
    所述检测单元包括：第三处理器，所述第三处理器的第一输入端与所述参考支路的输出端电连接，所述第三处理器的第二输入端与所述比较支路的输出端电连接，所述第三处理器的输出端作为所述检测单元的输出端，输出所述相位调节信号。
  8. 根据权利要求3-7任一项所述的多路信号相干电路，其中，所述相位差检测模块还包括：
    通道切换开关，所述通道切换开关包括信号连接端和至少两个切换端，所述切换端的数量与所述信号产生模块的数量匹配；所述切换端与匹配的所述信号产生模块的输出端电连接；所述信号连接端与所述比较支路电连接，向所述比较支路提供另一路所述单路信号。
  9. 根据权利要求1所述的多路信号相干电路，其中，还包括：
    附加校准设备，所述附加校准设备的至少两个信号输入端与所述多路信号相干电路的至少两个输出端电连接；所述附加校准设备的控制输出端与所述多路信号相干电路的附加控制端电连接；所述附加校准设备配置为对至少两路所述单路信号的相位变化量进行补偿。
  10. 根据权利要求1所述的多路信号相干电路，其中，所述相位差检测模块的数量为至少一个；
    若所述相位差检测模块的数量为一个，则全部所述信号产生模块与所述相位差检测模块电连接；其中一路所述信号产生模块输出的单路信号作为参考信号，其他所述信号产生模块输出的单路信号作为比较信号；
    若所述相位差检测模块的数量为至少两个，则其中一路所述信号产生模块与全部所述相位差检测模块电连接，其输出的所述单路信号作为参考信号，其他所述信号产生模块输出的单路信号作为比较信号；每个所述相位差检测模块与部分所述信号产生模块电连接。
  11. 一种射频信号源，包括：如权利要求1-10任一项所述的多路信号相干电路。
PCT/CN2022/096581 2021-12-09 2022-06-01 多路信号相干电路和射频信号源 WO2023103302A1 (zh)

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CN112702237A (zh) * 2020-12-24 2021-04-23 上海创远仪器技术股份有限公司 实现针对mimo通信系统通道间时延和相位差进行计算测量的方法
CN114401169A (zh) * 2021-12-09 2022-04-26 普源精电科技股份有限公司 多路信号相干电路和射频信号源

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