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WO2023035663A1 - Modulateur de vecteur à commande numérique - Google Patents

Modulateur de vecteur à commande numérique Download PDF

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Publication number
WO2023035663A1
WO2023035663A1 PCT/CN2022/093873 CN2022093873W WO2023035663A1 WO 2023035663 A1 WO2023035663 A1 WO 2023035663A1 CN 2022093873 W CN2022093873 W CN 2022093873W WO 2023035663 A1 WO2023035663 A1 WO 2023035663A1
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WO
WIPO (PCT)
Prior art keywords
digitally controlled
channel
vector modulator
phase
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/093873
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English (en)
Chinese (zh)
Inventor
谭永
刘胜杰
曾祥希
俞光日
李光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin 712 Communication and Broadcasting Co Ltd
Original Assignee
Tianjin 712 Communication and Broadcasting Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tianjin 712 Communication and Broadcasting Co Ltd filed Critical Tianjin 712 Communication and Broadcasting Co Ltd
Publication of WO2023035663A1 publication Critical patent/WO2023035663A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H03C7/025—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H03C7/025—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices
    • H03C7/027—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices using diodes

Definitions

  • the invention belongs to the field of radio frequency technology, in particular to a numerically controlled vector modulator.
  • the vector modulator can adjust the amplitude and phase at the same time, which is one of the preferred schemes.
  • a digitally controlled attenuator plus a digitally controlled phase shifter is often used to control the amplitude and phase separately.
  • the existing various digitally controlled phase shifter technologies such as switch line technology, load line technology, reflective technology, switch filter technology, etc., are difficult to simultaneously satisfy broadband, 360° all-phase adjustment, high precision, Low insertion loss performance, or there may be problems of high cost and large volume, and it is difficult to perform technology transplantation between various frequency bands.
  • the present invention aims to propose a numerically controlled vector modulator to solve the deficiencies in the above problems.
  • Digitally controlled vector modulator including port 1, I/Q splitter, digitally controlled signal amplitude adjustment unit, digitally controlled inverter, power divider, and port 2 connected in sequence;
  • I/Q splitter used to divide the RF signal input from port 1 into I-channel signal and Q-channel signal which are orthogonal and equal in amplitude
  • the numerical control signal amplitude adjustment unit is used to control the amplitude of the I-channel and Q-channel signals respectively, and after vector synthesis, adjust the amplitude and phase of the signal in the quadrant;
  • the digitally controlled inverter is used to perform phase processing on the I-channel and Q-channel signals processed by the numerically controlled signal amplitude adjustment unit according to the different quadrants required by the vector;
  • the power divider is used to combine the signals of the I channel and the Q channel and then output them through port 2.
  • the I/Q splitter includes a 3dB directional coupler and an isolation resistor.
  • the I/Q splitter includes a high/low pass rheostat filter.
  • the digitally controlled signal amplitude adjustment unit includes a digitally controlled attenuator.
  • the digitally controlled signal amplitude adjustment unit includes a numerically controlled variable gain amplifier.
  • the digitally controlled inverter includes two working states:
  • the reference state is defined as a phase of 0°, and the phase is flipped to 180° in another state.
  • the digitally controlled inverter includes a 3dB directional coupler and a pair of simultaneously on/off SPST RF switches.
  • the digitally controlled inverter includes a pair of SPDT radio frequency switches for switching high/low pass filters.
  • the radio frequency switch includes a radio frequency switch based on a PIN diode, a radio frequency switch IC based on various semiconductor processes, and a MEMS radio frequency switch, and the IC represents an integrated circuit.
  • the power divider includes a non-phase power divider or a reverse-phase power divider.
  • the digitally controlled vector modulator of the present invention has the following beneficial effects:
  • the numerical control vector modulator of the invention is easy to realize the design of wide working frequency band, easy to transplant technology between frequency bands, its performance parameters are not sensitive to temperature, and the response speed is fast.
  • Fig. 1 is the structural representation of numerical control vector modulator of the present invention
  • Fig. 2 is the structural representation of traditional analog vector modulator
  • Fig. 3 is the structural representation of the narrowband IQ splitter of the present invention.
  • Fig. 4 is the quadrant adjustment schematic diagram of the signal vector of the present invention.
  • Fig. 5 is the structural representation of the narrowband digital control inverter of the present invention.
  • 101 I/Q splitter; 102, numerical control attenuator (I road); 103, numerical control attenuator (Q road); 104, numerical control inverter (phase is 0 °); 105, numerical control inverter (phase is 180°); 106, power divider.
  • a numerically controlled vector modulator as shown in FIG. 1 includes: port 1, port 2, I/Q splitter, numerically controlled signal amplitude adjustment unit, numerically controlled inverter, and power divider.
  • the I/Q splitter 101 divides the radio frequency signal into an I-channel signal and a Q-channel signal which are orthogonal and equal in amplitude.
  • the I/Q splitter can be completed using a 3dB directional coupler (90° bridge) and isolation resistors;
  • an I/Q splitter can also be completed in the form of a high/low pass rheostat filter, as shown in Figure 3. And any other circuit form that can split the signal into equal amplitude and phase difference of ⁇ 90° can be used as an I/Q splitter.
  • the digital control signal amplitude adjustment units 102 and 103 respectively control the amplitudes of the I-channel and Q-channel signals, and after vector synthesis, can adjust the amplitude and phase of the signals in the quadrants they are in.
  • the lowest gear of the numerical control signal amplitude adjustment unit affects the accuracy of the amplitude and phase adjustment of the vector modulator.
  • the circuit designed based on the NC signal amplitude adjustment unit with the lowest gear of 0.25dB has an amplitude adjustment accuracy of 0.25dB or better, and an all-phase control accuracy of 0.825° or better;
  • the circuit designed by the signal amplitude adjustment unit has an amplitude adjustment accuracy of 0.5dB or better, and an all-phase control accuracy of 1.65° or better.
  • the core function of the numerically controlled signal amplitude adjustment unit is to adjust the amplitude of the signal, so a numerically controlled attenuator can be used, or a numerically controlled variable gain amplifier can be used instead.
  • the digitally controlled inverters 104 and 105 have two working states. One is the reference state, which is defined as a phase of 0°; in the other state, the phase is flipped to 180°.
  • a 3dB directional coupler and a pair of SPST RF switches that are turned on or off at the same time can be used to complete the function of the digitally controlled inverter.
  • I signal, Q signal when the radio frequency switch is not conducting (open circuit state), it is defined that the signal is in the reference phase at this time, that is, the phase is 0°; then when the radio frequency switch is conducting (short circuit state), the signal phase of this channel will be reversed by 180°.
  • the I-channel signal as the X-axis
  • the Q-channel signal as the Y-axis
  • the RF switches are not turned on the signal vector is in the first quadrant, then the corresponding relationship between the signal vector quadrant and the switch state is shown in Figure 4. That is, by switching the working state of the radio frequency switch, the signal vector can be mapped from the first quadrant to any quadrant from the first to the fourth quadrant, and the 360° all-phase adjustment of the signal vector can be completed.
  • a pair of SPDT radio frequency switches can also be used to switch the high/low pass filter to complete the function of the digitally controlled inverter, and its functional block diagram is shown in Figure 5.
  • any other circuit form that can control the signal vector to a phase difference of 180° can be used as a digitally controlled inverter.
  • RF switches can be realized by a variety of technologies, such as RF switches based on PIN diodes, RF switch ICs based on various semiconductor processes (GaN, GaAs, SiGe, etc.), MEMS RF switches, etc.
  • the power divider 106 may be composed of an in-phase (0° phase difference) power divider or an inverting phase power divider (180° phase difference/BULUN). The difference is only the mirror image of the quadrant where the vector is located, and does not affect the realization of the overall function.
  • the numerically controlled signal amplitude adjustment unit and the numerically controlled inverter are connected in series, so the positions can be interchanged without affecting the realization of the functions.
  • port 1 and port 2 are reciprocal, that is, the signal flow direction is arbitrary, and can be obtained from port 1 Flow to port 2, or flow from port 2 to port 1, without affecting the realization of the function.
  • the digitally controlled inverter can be deleted.
  • the disclosed method and system may be implemented in other ways.
  • the division of the above-mentioned units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored, or Not implemented.
  • the above units may or may not be physically separated, and components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transmitters (AREA)

Abstract

La présente invention concerne un modulateur de vecteur à commande numérique, comprenant un port 1, un diviseur I/Q, une unité de réglage d'amplitude de signal de commande numérique, un onduleur de commande numérique, un diviseur de puissance et un port 2 qui sont connectés en séquence. Le diviseur I/Q est utilisé pour diviser un signal radiofréquence entré à partir du port 1 en un signal de canal I et un signal de canal Q qui sont orthogonaux et égaux en amplitude. L'unité de réglage d'amplitude de signal de commande numérique est utilisée pour commander séparément l'amplitude des signaux de canal I et de canal Q, et après avoir subi une synthèse vectorielle, ajuster l'amplitude et la phase des signaux dans des quadrants de ceux-ci. Selon les différences de quadrant requises par les vecteurs, l'onduleur de commande numérique est utilisé pour effectuer un traitement de phase sur les signaux de canal I et Q traités par l'unité de réglage d'amplitude de signal de commande numérique. Les effets bénéfiques de la présente invention sont les suivants : il est facile pour le modulateur de vecteur à commande numérique décrit dans la présente invention d'obtenir la conception d'une large bande de fréquences de fonctionnement et d'effectuer une transplantation de technologie entre des bandes de fréquences. Les paramètres de performance du modulateur ne sont pas sensibles à la température, et la vitesse de réponse est rapide.
PCT/CN2022/093873 2021-09-10 2022-05-19 Modulateur de vecteur à commande numérique Ceased WO2023035663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111065455.8 2021-09-10
CN202111065455.8A CN113783531A (zh) 2021-09-10 2021-09-10 数控矢量调制器

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WO2023035663A1 true WO2023035663A1 (fr) 2023-03-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113783531A (zh) * 2021-09-10 2021-12-10 天津七一二通信广播股份有限公司 数控矢量调制器
CN116094891B (zh) * 2022-12-30 2025-09-12 公安部第一研究所 一种可补偿的数控无源矢量调制器及实现方法

Citations (5)

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US4355289A (en) * 1980-07-14 1982-10-19 Wisconsin Alumni Research Foundation Phase shift and amplitude modulator
US4968956A (en) * 1989-12-04 1990-11-06 Trw Inc. Microwave phase modulator having a quadrature path with phase offset
CN107229886A (zh) * 2017-06-26 2017-10-03 深圳市远望谷信息技术股份有限公司 一种消除rfid读写器中动态自干扰的方法及装置
CN110855247A (zh) * 2019-11-25 2020-02-28 北京无线电测量研究所 一种e波段带有矢量调制器的多通道接收机
CN113783531A (zh) * 2021-09-10 2021-12-10 天津七一二通信广播股份有限公司 数控矢量调制器

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EP3139556B1 (fr) * 2014-06-26 2018-10-03 Huawei Technologies Co., Ltd. Dispositif et procédé d'annulation d'interférence
CN203951449U (zh) * 2014-06-30 2014-11-19 成都嘉纳海威科技有限责任公司 一种超宽带矢量调制芯片
CN106877002B (zh) * 2015-12-14 2020-09-11 中国航空工业集团公司雷华电子技术研究所 一种相位及功率比连续可调的极化控制网络
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CN106848608B (zh) * 2017-01-25 2020-03-17 东南大学 宽带混合波束成形一体化天线阵
CN107219485B (zh) * 2017-05-22 2019-09-24 中国电子科技集团公司第四十一研究所 应用于微放电效应检测的相位差值计算调零装置及方法
CN109039373B (zh) * 2018-06-21 2020-05-05 北京北大千方科技有限公司 一种射频载波自干扰消除装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355289A (en) * 1980-07-14 1982-10-19 Wisconsin Alumni Research Foundation Phase shift and amplitude modulator
US4968956A (en) * 1989-12-04 1990-11-06 Trw Inc. Microwave phase modulator having a quadrature path with phase offset
CN107229886A (zh) * 2017-06-26 2017-10-03 深圳市远望谷信息技术股份有限公司 一种消除rfid读写器中动态自干扰的方法及装置
CN110855247A (zh) * 2019-11-25 2020-02-28 北京无线电测量研究所 一种e波段带有矢量调制器的多通道接收机
CN113783531A (zh) * 2021-09-10 2021-12-10 天津七一二通信广播股份有限公司 数控矢量调制器

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