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WO2018184177A1 - Procédé de détection d'onde stationnaire, dispositif de détection d'onde stationnaire, et canon à électrons - Google Patents

Procédé de détection d'onde stationnaire, dispositif de détection d'onde stationnaire, et canon à électrons Download PDF

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Publication number
WO2018184177A1
WO2018184177A1 PCT/CN2017/079633 CN2017079633W WO2018184177A1 WO 2018184177 A1 WO2018184177 A1 WO 2018184177A1 CN 2017079633 W CN2017079633 W CN 2017079633W WO 2018184177 A1 WO2018184177 A1 WO 2018184177A1
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WO
WIPO (PCT)
Prior art keywords
antenna
standing wave
reflection coefficient
incident
detecting
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/CN2017/079633
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English (en)
Chinese (zh)
Inventor
邓任钦
陈涛
汤一君
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.)
SZ DJI Technology Co Ltd
Original Assignee
SZ DJI Technology 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 SZ DJI Technology Co Ltd filed Critical SZ DJI Technology Co Ltd
Priority to CN201780016672.3A priority Critical patent/CN108925143B/zh
Priority to PCT/CN2017/079633 priority patent/WO2018184177A1/fr
Publication of WO2018184177A1 publication Critical patent/WO2018184177A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing

Definitions

  • the present invention relates to the field of electronic device technologies, and in particular, to a standing wave detecting method, a standing wave detecting device, and an electron gun.
  • Wireless communication products such as antennas need to perform standing wave detection to obtain the standing wave ratio and evaluate whether the quality of the product meets the requirements by the magnitude of the standing wave ratio.
  • the VSWR of the product is indirectly measured using components such as a coupler and a detector. Because the accuracy of the components such as the coupler is difficult to guarantee, the measurement result of the standing wave ratio is not accurate enough.
  • Embodiments of the present invention provide a standing wave detecting method, a standing wave detecting device, and an electron gun.
  • the standing wave detecting method of the embodiment of the present invention is for detecting a standing wave ratio of an antenna of an antenna assembly, and the method includes:
  • a standing wave detecting apparatus for detecting a standing wave ratio of an antenna of an antenna assembly, the standing wave detecting apparatus including a processor, the processor is configured to:
  • An electron gun includes an antenna assembly and a standing wave detecting device connected to the antenna assembly, the antenna assembly including an antenna, the standing wave detecting device for detecting a standing wave ratio of the antenna, and the standing wave detecting
  • the apparatus includes a processor for:
  • the standing wave detecting method, the standing wave detecting device, and the electron gun are also measured after obtaining the measured reflection coefficient of the antenna.
  • the amount of reflection coefficient calculates the actual reflection coefficient through the calibration parameters, and further calculates the standing wave ratio of the antenna through the actual reflection coefficient, and the obtained antenna standing wave ratio has higher accuracy.
  • FIG. 1 is a schematic flow chart of a standing wave detecting method according to an embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of an electron gun according to an embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a standing wave detecting method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a standing wave detecting method according to an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of an electron gun according to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of an antenna assembly according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a two-port network signal flow of an antenna assembly according to an embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a standing wave detecting method according to an embodiment of the present invention.
  • FIG. 9 is a schematic flow chart of a standing wave detecting method according to an embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of an electron gun according to an embodiment of the present invention.
  • FIG. 11 is a flow chart showing a standing wave detecting method according to an embodiment of the present invention.
  • Electron gun 100 antenna assembly 10, antenna 12, test circuit board 14, signal source 142, bidirectional coupler 144, reverse coupled output 1442, forward coupled output 1444, reflective coupling branch 146, first attenuator 1462
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.
  • the standing wave detecting method is used to detect the standing wave ratio of the antenna 12 of the antenna assembly 10.
  • the standing wave detecting method includes the following steps:
  • the standing wave detecting device 20 of the embodiment of the present invention is for detecting the standing wave ratio of the antenna 12 of the antenna assembly 10.
  • the standing wave detecting device 20 includes a processor 22, and the processor 22 can be used to implement steps S1, S2, S3, and S4. That is, the processor 22 can be used to acquire the measured reflection coefficient of the antenna 12.
  • Processor 22 can be used to obtain calibration parameters.
  • the processor 22 can be configured to calculate an actual reflection coefficient of the antenna 12 based on the reflection coefficient and the calibration parameters.
  • the processor 22 can be used to calculate the standing wave ratio of the antenna 12 based on the actual reflection coefficient.
  • the standing wave detecting device 20 according to the embodiment of the present invention can be applied to the electron gun 100 according to the embodiment of the present invention.
  • the standing wave detecting device 20 is connected to the antenna assembly 10 and used to detect the standing wave ratio of the antenna 12. .
  • the standing wave detecting method, the standing wave detecting device 20, and the electron gun 100 described above acquire the measured reflection coefficient of the antenna 12. Thereafter, the actual reflection coefficient is also calculated by the calibration parameter for the measured reflection coefficient, and the standing wave ratio of the antenna 12 is further calculated by the actual reflection coefficient, whereby the accuracy of the standing wave ratio of the antenna 12 obtained is high.
  • the antenna 12 may transmit or receive electromagnetic waves outward to achieve the purpose of transmitting a signal to an external device or receiving a signal of an external device, or the antenna 12 may also emit electromagnetic waves for the purpose of interfering with communication of an external device.
  • the electromagnetic wave can be a high-frequency electromagnetic wave or a low-frequency electromagnetic wave, such as a radio frequency.
  • the radio frequency can be transmitted in the air and reflected by the ionosphere at the outer edge of the atmosphere to form a long-distance transmission capability.
  • the electron gun 100 may be a device that uses the antenna assembly 10 to emit electromagnetic waves to the outside to interfere with communication of external devices.
  • the electron gun 100 may be used to transmit electromagnetic waves to the drone to interfere with the drone and the drone remote controller, or the drone and the satellite, etc. The communication between the drones makes the drone lose control.
  • the reflection coefficient is defined as the ratio of the reflected voltage to the incident voltage.
  • the reflection coefficient is usually used to describe the amplitude and phase relationship between the reflected wave and the incident wave. There is a certain proportional relationship between the reflection coefficient and the standing wave ratio.
  • the standing wave ratio is an index describing the degree of impedance matching of the antenna 12 port.
  • the magnitude of the standing wave ratio of the antenna 12 port directly affects the transmission and reception efficiency of the signal, thereby affecting the performance of the antenna assembly 10.
  • the standing wave ratio is defined as the ratio of the antinode voltage to the valley voltage. In order to obtain the standing wave ratio of the antenna 12, the reflection coefficient of the antenna 12 can be measured, and then the standing wave ratio of the antenna 12 can be calculated by the relationship between the standing wave ratio and the reflection coefficient.
  • step S2 includes the following sub-steps:
  • Processor 22 can also be used to implement steps S21 and S22. That is to say, the processor 22 is also used to acquire the measured reflection coefficients of the three reference antennas, and the actual reflection coefficients of the three reference antennas are known. The processor 22 is further configured to substitute three known actual reflection coefficients and corresponding measured reflection coefficients into the first equation and calculate calibration parameters. The processor 22 is coupled to the memory 24.
  • processor 22 substitutes ⁇ ′ S and ⁇ S , ⁇ ′ O and ⁇ O , ⁇ ′ L and ⁇ L into the first equation, respectively, to obtain a system of equations in which three equations are connected:
  • the processor 22 calculates the above equations to obtain calibration parameters A, B, and C:
  • the antenna 12 can be regarded as a kind of load in the antenna assembly 10, and the reference antenna is used instead of the antenna 12 as a load in the antenna assembly 10.
  • the measured reflection coefficient of the reference antenna can be obtained by the processor 22.
  • the reference antenna can be one or more of an open load, a shorted load, and a matched load.
  • the three reference antennas may be three of an open load, a short load, and a matched load, for example, the first reference antenna is an open load, the second reference antenna is a short circuit load, and the third reference antenna is a matched load.
  • two of the three reference antennas may be any two of an open load, a short load, and a matched load, and the other reference antenna is the rest of the load, for example, the first reference antenna is an open load, The second reference antenna is a short-circuit load, the third reference antenna is an open load, a short-circuit load, and a load other than the matched load, or the first reference antenna is an open load, the second reference antenna is a matched load, and the third reference antenna is an open load. , short-circuit load and load outside the matching load.
  • one of the three reference antennas may be any one of an open load, a short load, and a matched load, and the other two reference antennas are the remaining types of loads, for example, the first reference antenna is an open load, The second reference antenna and the third reference antenna are both an open load, a short-circuit load, and a load other than the matched load, or the first reference antenna is a short-circuit load, and the second reference antenna and the third reference antenna are open load, short-circuit load, and matching. Load outside the load.
  • the actual reflection coefficients of the open circuit load, the short circuit load, and the matched load are +1, -1, and 0, respectively, and are not easily changed with changes in the environment, thus ensuring the accuracy of the calibration parameters calculated by the processor 22.
  • the memory 24 can also be used to store calibration parameters A, B, C.
  • the processor 22 can also be used to implement step S31, that is, the processor 22 can also be used to calculate the actual reflection coefficient in accordance with the second equation. Specifically, the processor 22 can also be used to substitute the measured reflection coefficient and the calibration parameter into the second equation and calculate the actual reflection coefficient.
  • the network relationship between the first port 16 of the antenna assembly 10 connected to the standing wave detecting device 20 and the second port 18 of the antenna assembly 10 connected to the antenna 12 can be abstractly equivalent to a two-port network.
  • the ports (16, 18) have both incident and reflected waves, and the reflection coefficients of the ports (16, 18) are the ratio of the reflected wave power to the incident wave power.
  • FIG. 7 is a signal flow diagram of a two-port network in which the network relationship between the first port 16 and the second port 18 is abstractly equivalent, wherein the first port 16 is abstracted to receive the first node a 1 . a port 16, the incident, reflected and transmitted waves 16 from the first port node b 1. The second port 18 is abstracted to receive the incident wave of the second port 18 from the node a 2 and the reflected wave of the second port 18 from the node b 2 .
  • the gain of node a 1 to node b 1 is S 11
  • the gain of node a 1 to node b 2 is S 21
  • the gain of node a 2 to node b 1 is S 12
  • the gain of node a 2 to node b 2 is S 22
  • each of the above gains is related to the nature of the antenna assembly 10 itself.
  • the first port 16 is a port that the antenna component 10 is connected to the standing wave detecting device 20.
  • the reflection coefficient of the antenna 12 directly detected by the first port 16 is a measured reflection coefficient.
  • the measured reflection coefficient ⁇ 1 can be used.
  • the processor 22 can also be used to implement step S41, that is, the processor 22 can also be used to calculate the standing wave ratio according to a third party program. In particular, processor 22 can be used to substitute the actual reflection coefficient ⁇ 2 into a third party program to calculate the standing wave ratio VSWR.
  • step S1 includes the steps of:
  • the standing wave detecting device 20 further includes a detector 26 and a memory 24.
  • Detector 26 and processor 22 can be used to implement steps S11 and S12, respectively. That is, the detector 26 can be used to detect the incident wave power and the reflected wave power of the antenna 12.
  • the processor 22 can also be used to calculate a measured reflection coefficient in accordance with the fourth equation. Specifically, the processor 22 can be used to substitute the incident wave power and the reflected wave power detected by the detector 26 into the fourth equation, and calculate the measured reflection coefficient.
  • detector 26 is a means for detecting some useful information in the heartbeat, means for identifying the presence or variation of a wave, oscillation or signal.
  • One end of the detector 26 is coupled to the antenna assembly 10 for equivalent detection of the incident wave power and reflected wave power of the antenna 12, and the other end of the detector 26 is coupled to the processor 22 for providing the detected incidence to the processor 22.
  • the detector 26 is coupled to the antenna assembly 10 via a plug interface to facilitate disassembly and assembly of the detector 26.
  • the antenna assembly 10 further includes a test circuit board 14 including an incident coupling branch 148 for detecting the incident wave power of the antenna 12, and a reflection coupling branch 146 for detecting the reflected wave power of the antenna 12, the step S11 comprising the steps of:
  • the antenna assembly 10 further includes a test circuit board 14 that includes an incident coupling branch 148 for detecting the incident wave power of the antenna 12, and a reflection for detecting the reflected wave power of the antenna 12.
  • Coupled branch 146, detector 26 can be used to implement steps S111 and S112, that is, detector 26 can be used to detect incident wave power through incident coupling branch 148 and to detect reflected wave power through reflective coupling branch 146.
  • step S111 and step S112 may be: first step S111 and then step S112, or step S112 and step S111.
  • the incident coupling branch 148 is used to equivalently output the incident wave of the antenna 12
  • the reflective coupling branch 146 is used to equivalently output the reflected wave of the antenna 12
  • the detector 26 can detect the antenna when connected to the incident coupling branch 148.
  • the incident wave power of 12, when connected to the reflection coupling branch 146, can detect the reflected wave power of the antenna 12.
  • test circuit board 14 further includes a signal source 142, a bidirectional coupler 144, and a changeover switch 149.
  • Signal source 142 is used to generate a signal.
  • Bidirectional coupler 144 is coupled to signal source 142 and antenna 12 and is used to couple forward and reverse power between signal source 142 and antenna 12 for use by incident coupling branch 148 and reflective coupling branch 146.
  • Switching switch 149 is used to switchably connect detector 26 to incident coupling branch 148 or reflective coupling branch 146.
  • the bidirectional coupler 144 couples the incident waves generated by the signal source 142 to the antenna 12 and the incident coupling branch 148, respectively, while coupling the reflected wave portion of the antenna 12 to the reflective coupling branch 146.
  • the bidirectional coupler 144 couples the reflected waves of the antenna 12 to the outcoupling output 1442 and into the reflective coupling branch 146, and couples the incident waves generated by the signal source 142 to the forward coupled output 1444 and into Incident coupling branch 148.
  • Switch 149 can connect incident coupling branch 148 or reflective coupling branch 146 to detector 26.
  • the reflective coupling branch 146 includes a first attenuator 1462 that is coupled between the reverse coupled output 1442 of the bidirectional coupler 144 and the diverter switch 149.
  • the first attenuator 1462 can be used to adjust the reflected wave power of the reflective coupling branch 146 such that the reflected wave power falls within the detection range of the detector 26, ensuring that the detection result of the detector 26 is more accurate.
  • the incident coupling branch 148 includes a second attenuator 1482 that is coupled between the forward coupled output 1444 of the bidirectional coupler 144 and the diverter switch 149.
  • the second attenuator 1482 can be used to adjust the incident wave power of the incident coupling branch 148 such that the incident wave power falls within the detection range of the detector 26, ensuring that the detection result of the detector 26 is more accurate.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • a plurality means at least two, for example two, three, unless specifically defined otherwise.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

La présente invention concerne un procédé de détection d'onde stationnaire. Le procédé de détection d'onde stationnaire est utilisé pour détecter le rapport d'onde stationnaire d'une antenne (12) d'un ensemble antennes (10). Le procédé de détection d'onde stationnaire consiste : (S1) à acquérir un coefficient de réflexion mesuré de l'antenne (12) ; (S2) à acquérir un paramètre d'étalonnage ; (S3) à calculer le coefficient de réflexion réel de l'antenne (12) sur la base du coefficient de réflexion mesuré et du paramètre d'étalonnage ; et (S4) à calculer le rapport d'onde stationnaire de l'antenne (12) sur la base du coefficient de réflexion réel. L'invention concerne également un dispositif de détection d'onde stationnaire (20) et un canon à électrons (100). Le procédé de détection d'onde stationnaire tel que décrit dans la description, le dispositif de détection d'onde stationnaire (20) et le canon à électrons (100), lorsque le coefficient de réflexion mesuré de l'antenne (12) est acquis, consistent également à calculer le coefficient de réflexion réel par rapport au coefficient de réflexion mesuré par l'intermédiaire du paramètre d'étalonnage, et à calculer en outre le rapport d'onde stationnaire de l'antenne (12) par l'intermédiaire du paramètre de réflexion réel, et le rapport d'onde stationnaire de l'antenne (12) produit en tant que tel est d'une précision accrue.
PCT/CN2017/079633 2017-04-06 2017-04-06 Procédé de détection d'onde stationnaire, dispositif de détection d'onde stationnaire, et canon à électrons Ceased WO2018184177A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780016672.3A CN108925143B (zh) 2017-04-06 2017-04-06 驻波检测方法、驻波检测装置和电子枪
PCT/CN2017/079633 WO2018184177A1 (fr) 2017-04-06 2017-04-06 Procédé de détection d'onde stationnaire, dispositif de détection d'onde stationnaire, et canon à électrons

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PCT/CN2017/079633 WO2018184177A1 (fr) 2017-04-06 2017-04-06 Procédé de détection d'onde stationnaire, dispositif de détection d'onde stationnaire, et canon à électrons

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CN112730997B (zh) * 2020-12-23 2024-03-12 昆山锐诚达电子有限公司 一种5g杆套天线自动检测方法
CN114252701B (zh) * 2021-12-08 2024-08-23 中国电子科技集团公司第十三研究所 微波器件驻波比测量方法及测量终端
CN115051763B (zh) * 2022-06-16 2024-01-12 维沃移动通信有限公司 电压驻波比的测量方法、测量装置和电子设备
CN115290997B (zh) * 2022-06-27 2025-03-14 中国电子科技集团公司第十三研究所 一种基于重心的波导端口s参数校准方法及装置

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CN101526564A (zh) * 2009-03-30 2009-09-09 武汉凡谷电子技术股份有限公司 功率与驻波比的检测装置及方法
CN102307363A (zh) * 2011-09-09 2012-01-04 京信通信系统（中国）有限公司 驻波检测方法、装置及基站系统
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US8767871B2 (en) * 2011-06-08 2014-07-01 Broadcom Corporation Antenna tuning using the ratio of complex forward and reflected signals
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CN104579516B (zh) * 2014-12-04 2017-11-14 大唐移动通信设备有限公司 一种驻波比检测方法和设备
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CN102307363A (zh) * 2011-09-09 2012-01-04 京信通信系统（中国）有限公司 驻波检测方法、装置及基站系统
CN103592565A (zh) * 2012-08-16 2014-02-19 中兴通讯股份有限公司 一种线缆故障位置检测方法及装置

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