WO2016032114A1 - Procédé pour commander un rapport d'onde stationnaire de tension à partir d'une antenne de station de base - Google Patents

Procédé pour commander un rapport d'onde stationnaire de tension à partir d'une antenne de station de base Download PDF

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Publication number
WO2016032114A1
WO2016032114A1 PCT/KR2015/006986 KR2015006986W WO2016032114A1 WO 2016032114 A1 WO2016032114 A1 WO 2016032114A1 KR 2015006986 W KR2015006986 W KR 2015006986W WO 2016032114 A1 WO2016032114 A1 WO 2016032114A1
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Prior art keywords
standing wave
antenna
wave ratio
vswr
adjusting
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PCT/KR2015/006986
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English (en)
Korean (ko)
Inventor
문영찬
최오석
김인호
소성환
이명식
Original Assignee
주식회사 케이엠더블유
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Publication of WO2016032114A1 publication Critical patent/WO2016032114A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

Definitions

  • an antenna installed in a base station, a relay station, a small base station (hereinafter, referred to as a base station system), which is a wireless access node, in a mobile communication (PCS, cellular, CDMA, GSM, LTE, etc.) network.
  • a base station system which is a wireless access node, in a mobile communication (PCS, cellular, CDMA, GSM, LTE, etc.) network.
  • PCS mobile communication
  • cellular Code Division Multiple Access
  • CDMA Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • LTE Long Term Evolution
  • the present invention relates to a technique for effectively tuning a voltage standing wave radio (VSWR) of a base station antenna.
  • VSWR voltage standing wave radio
  • the base station system of a wireless communication network is usually an antenna installed in a high position such as a roof or a tower of a building, a base station main body installed on the ground (usually bulky and heavy), and a feeding cable connecting them. It may be configured as a (feeder cable).
  • the base station main body performs basic transmit and receive RF signal processing operations, transmits an RF signal through a feed cable, and an antenna is provided with an array of a plurality of transmit and receive radiating elements to transmit and receive a radio signal.
  • a booster called a tower mounted amplifier (TMA) or a remote radio head (RRH) or the like is used to provide a proximity position of an antenna (for example, For example, the bottom of the antenna) is installed.
  • TMA tower mounted amplifier
  • RRH remote radio head
  • such a base station system is typically provided with devices for remotely controlling the state of the radiation beam of the antenna, including, for example, an RET (Remote Electrical Tilt) device for electronic down tilt angle adjustment.
  • RET Remote Electrical Tilt
  • ALD antenna line devices
  • an antenna interface standard group (AISG) protocol is used for antenna control in the base station main body, and is also compatible with a 3rd generation partnership project (3GPP) standard.
  • 3GPP 3rd generation partnership project
  • the base station system may be equipped with a variety of diagnostic equipment for determining the normal state or malfunction by measuring the radiation performance and characteristics of the antenna, such diagnostic equipment, for example, the standing wave ratio (VSWR: Voltage of the antenna)
  • diagnostic equipment for example, the standing wave ratio (VSWR: Voltage of the antenna)
  • the antenna is provided with a measuring unit for measuring the VSWR, and when the base station main body receives the measured signal of the VSWR measuring unit and is considered to be in a normal state, it generates alarm signal information accordingly.
  • the generated alarm signal information is provided to the operator side through the base station controller and the like, and thereafter, operations such as inspection and replacement of the base station antenna, which are considered to be in a normal state, are performed.
  • the present invention aims to automatically optimize VSWR matching of base station antennas and to normalize VSWR characteristics, eliminating inconvenience caused by inspection and replacement of base station antennas, and minimizing resource waste such as manpower, time and cost. do.
  • An embodiment of the present invention for the above-described purposes in a base station system comprising a primary device and a secondary device including an antenna and in communication with the primary device, the secondary device is the antenna
  • a method of controlling a voltage standing wave ratio (VSWR) of the method comprising: detecting a standing wave ratio of the antenna; Adjusting the standing wave ratio characteristics of the antenna when the detected standing wave ratio is abnormal; And transmitting the adjustment result to the main device.
  • VSWR voltage standing wave ratio
  • Adjusting the standing wave ratio characteristic of the antenna, transmitting the detected standing wave ratio to the main device; Receiving a standing wave ratio control command from the main device; And adjusting the standing wave ratio characteristics of the antenna based on the control command, and transmitting the adjustment result may include detecting and adjusting the adjusted standing wave ratio to the main device.
  • the auxiliary device determines by itself whether or not the detected standing wave ratio is in a normal state until the standing wave ratio of the antenna is in a normal state. It is also possible to repeat the step of adjusting the standing wave ratio characteristics of the.
  • the auxiliary device may receive a request signal for controlling the standing wave ratio of the antenna from the main device and repeatedly perform the detecting step and adjusting the standing wave ratio characteristic of the antenna in response to the received request signal. have. When the standing wave ratio of the antenna does not become a normal state, an alarm signal may be transmitted to the main device.
  • the auxiliary device may adjust the standing wave ratio characteristics of the antenna by changing the electrical characteristics of the internal feed line. For example, by moving the line variable part by a driving unit, an internal power supply is adjusted by adjusting a coupling area between at least one stub extending in the radial direction from the internal feed line and at least one auxiliary line provided in the line variable part. The capacitance of the line can be adjusted.
  • the auxiliary device may adjust the impedance characteristic of the inner feed line by moving a dielectric material surrounding a portion of the inner feed line in a longitudinal direction of the inner feed line by a driving unit.
  • the auxiliary device may adjust the standing wave ratio characteristics of the antenna by changing the transmission and reception characteristics of the radiating element.
  • the auxiliary device may change a transmission / reception characteristic of the radiating element by moving a beam forming auxiliary formed of a thin metal body in a radially spaced distance of the radiating element along a radial direction of the radiating element by a driving unit. .
  • the present invention can improve the VSWR change that may occur randomly after connecting the feed cable of the antenna and each device in the field through the internal tuning of the antenna, and according to the use environment change (climate change, etc.) as well as the initial installation Improvements can also be made to VSWR changes.
  • the use environment change climate change, etc.
  • the initial installation Improvements can also be made to VSWR changes.
  • optimizing the VSWR matching in the present invention it is helpful to the efficiency of the entire system, and it is possible to reduce the alarm occurrence due to VSWR degradation in the field.
  • the present invention can minimize the work for the inspection and replacement of the base station antenna, it is possible to minimize the waste of manpower, time and cost, and reduce the waste of resources due to the replacement of the base station antenna.
  • the eNodeB or BTS can control and monitor the standing wave ratio matching tuner, thereby enabling effective base station operation.
  • FIG. 1 is a block diagram of a base station system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of a base station system according to another embodiment of the present invention.
  • FIG. 3 is a configuration diagram of a base station system according to another embodiment of the present invention.
  • FIG. 4 is a configuration diagram of a base station system according to another embodiment of the present invention.
  • FIG. 5 is a flow chart briefly illustrating a method of controlling the VSWR characteristic of an antenna according to an embodiment of the present invention
  • FIG. 6 is a view for explaining a method of controlling the VSWR characteristic of the antenna according to the first embodiment of the present invention
  • FIG. 7 is a view for explaining a method of controlling the VSWR characteristic of an antenna according to a second embodiment of the present invention.
  • FIG. 8 is a detailed structural diagram of a first example of a VSWR converter and a driver
  • FIG. 9 is an equivalent circuit diagram of a VSWR converter of FIG. 8.
  • FIG. 10 is a detailed structural diagram of a second example of the VSWR converter and the driver
  • FIG. 11 is a view for explaining the principle of the VSWR converter of FIG. 10;
  • FIG. 12 is a detailed structural diagram of a third example of the VSWR converter and the driver.
  • FIG. 1 is a block diagram of a base station system according to an embodiment of the present invention.
  • a base station system includes an auxiliary device 1, an eNodeB 2 of a Long Term Evolution (LTE) system, and a remote radio head (RRH) 3, which is a main device.
  • LTE Long Term Evolution
  • RRH remote radio head
  • the auxiliary device 1 includes an antenna having at least one radiating element 11 for transmitting and receiving a radio signal and a radiating plate 10 on which the radiating element 11 is installed, and a voltage standing wave ratio (VSWR) of the antenna.
  • the auxiliary device 1 may further include an antenna line device (ALD) such as a remote electrical tilt (RET) 30 for electronically adjusting the down tilt angle of the antenna.
  • ALD antenna line device
  • RET remote electrical tilt
  • antenna line devices such as Remote Azimuth Steering (RAS) for remotely adjusting azimuth steering and Remote Azimuth Beamwidth (RAB) for remotely adjusting azimuth beamwidth Etc.
  • eNodeB (2) is a hardware system for the end-to-end connection with the mobile terminal in the LTE system is connected to the main device RRH (3) by the optical cable, such as CPRI (Common Public Radio Interface) or OBSAI (Open Baseband Remote Radiohead Interface) Communicate with RRH (3) according to communication standard.
  • CPRI Common Public Radio Interface
  • OBSAI Open Baseband Remote Radiohead Interface
  • the RRH 3 converts various control signals received from the eNodeB 2 into an AISG (Antenna Interface Standards Group) signal and transmits the signals to the auxiliary device 1 and converts the signals from the auxiliary device 1 into a signal suitable for the optical cable.
  • AISG Industry Standards Group
  • the RRH 3 is connected to the auxiliary device 1 through a feed cable (or a feed line) and an AISG cable.
  • the RRH 3 transmits and receives DC signals, RF signals, and the like through the feed cable, and controls the antenna through the AISG cable. Send and receive control signals and other various signals related to operation.
  • the matching tuner device 20 provided in the auxiliary device 1 converts the VSWR characteristic of the corresponding antenna 1 by converting the electrical signal transmission characteristic of the internal feed line or the radiating element transmission / reception characteristic by external driving.
  • the driving of the driving unit 23 is controlled to control the conversion operation of the VSWR characteristic of the VSWR conversion unit 24.
  • a control unit 22 a control unit 22.
  • various signals transmitted and received between the matching tuner device 20 and the RRH 3 are RS-485 communication via an AISG cable 6 connected to an antenna line device such as a RET 30. Can be transmitted and received according to the standard.
  • the present invention is not limited thereto, and it is also possible to use the feed cable 5 without using the AISG cable 6 according to the implementation manner.
  • the matching tuner device 20 and the RRH 3 may transmit and receive various signals through a feed cable. That is, various signals transmitted and received between the matching tuner device 20 and the RRH 3 may be converted into an OOK (On-Off Keying) signal 6 'and transmitted through the feed cable 5.
  • OOK On-Off Keying
  • FIG. 1 illustrates a base station system for an LTE system.
  • the eNodeB 2 and the RRH 3 are BTSs. (Base Transceiver Station, 7) and multiplexers (8, 9).
  • FIG. 5 is a flowchart schematically illustrating a method of controlling VSWR characteristics of an antenna according to an exemplary embodiment of the present invention.
  • the auxiliary device 1 detects the VSWR of the antenna (S510). That is, the control unit 22 provided in the matching tuner device 20 of the auxiliary device 1 controls the VSWR detection unit 21 to detect the VSWR and receive the detected VSWR.
  • the auxiliary device 1 adjusts the VSWR of the antenna (S530). That is, the controller 22 drives the driver 23 to perform a conversion operation of converting the VSWR characteristic of the antenna by the VSWR converter 24.
  • the auxiliary device 1 transmits the VSWR adjustment result to the main device 3 (S540).
  • whether the VSWR is out of the normal range is determined by the main device, and the auxiliary device 1 may control the VSWR characteristic of the antenna through the control of the main device.
  • the secondary device may itself determine whether the VSWR is out of normal range and automatically control the VSWR characteristics of the antenna.
  • FIG. 6 is a view for explaining a method of controlling the VSWR characteristic of the antenna according to the first embodiment of the present invention.
  • the control unit 22 included in the matching tuner device 20 of the auxiliary device 1 instructs the VSWR detection unit 21 to detect VSWR, and the VSWR detection unit 21 detects the VSWR of the antenna and transmits the detection signal information to the control unit 22.
  • the control unit 22 transmits the detection signal information to the RRH 3 (S604).
  • the control unit 22 may transmit the detection signal information according to the RS-485 communication standard through the AISG cable or as a OOK signal through the feed cable.
  • the RRH 3 converts the received detection signal information into a signal suitable for the optical cable and transmits it to the eNodeB 2 (S606).
  • the eNodeB 2 determines whether the VSWR of the antenna is in the normal range (S608), and if it is in the normal range, terminates the VSWR characteristic control procedure.
  • the eNodeB 2 transmits a control command for controlling the VSWR of the antenna to the RRH 3 through the optical cable (S610), and the RRH 3 sends the control command to the AISG.
  • the signal is converted into a signal and transmitted to the matching tuner device 20 (S612).
  • the control unit 22 of the matching tuner device 20 having received the control command drives the driver 23 according to the control command (S614), and the VSWR converter 24 is operated by the driver 23 to operate the VSWR of the antenna.
  • the characteristic is converted (S616).
  • the controller 22 detects the VSWR of the antenna through the VSWR detection unit 21 (S618), and transmits detection signal information regarding the detected VSWR to the RRH 3 (S620).
  • the RRH 3 transmits the received detection signal information to the eNodeB 2 (S622), and the eNodeB 2 receiving the detection signal information determines whether the detected VSWR is in a normal state (S624).
  • the eNodeB 2 ends the VSWR characteristic control procedure. However, when the detected VSWR is in an abnormal state, the eNodeB 2 determines whether it is impossible to convert the VSWR of the antenna to the normal state (S626). For example, the eNodeB 2 determines whether the VSWR control operation is performed for the entire set VSWR conversion range. When the VSWR control operation is performed for the entire preset range, it means that it is impossible to convert the VSWR to the normal state, and thus the eNodeB 2 outputs an alarm signal (S628). If the VSWR control operation is not performed for the entire preset range, the process returns to S610 and restarts from the step in which the eNodeB 2 transmits a control command for controlling the VSWR of the antenna.
  • the auxiliary device 1 is controlled by the eNodeB 2 through communication with the RRH 3 to control the VSWR of the antenna.
  • the second embodiment of the present invention described below differs from the first embodiment in that the auxiliary device 1 automatically controls the VSWR of the antenna without the control of the external device.
  • FIG. 7 is a view for explaining a method of controlling the VSWR characteristic of the antenna according to the second embodiment of the present invention.
  • the eNodeB 2 transmits a request signal (VSWR Automatic tuning request) for requesting VSWR control of the antenna to the RRH 3 through an optical cable (S700), and the RRH 3 converts the received request signal into an AISG signal. It transmits to the matching tuner device 20 of the auxiliary device 1 (S702).
  • the matching tuner device 20 of the auxiliary device 1 performs a VSWR automatic control procedure of S704 or less in response to the request signal.
  • S700 and S702 may be omitted according to an implementation method.
  • the matching tuner device 20 may perform a VSWR automatic control procedure of S704 or less at predetermined intervals without receiving a request signal from the RRH 3.
  • the control unit 22 of the matching tuner device 20 detects the VSWR of the antenna through the VSWR detector 21 (S704), and determines whether the detected VSWR is in a normal state (S706).
  • the controller 22 drives the driver 23 (S708), and the VSWR converter 24 converts the VSWR of the antenna by driving the driver 23 (S710). .
  • the controller 22 re-detects the VSWR of the antenna through the VSWR detector 21 (S712), and then determines whether the re-detected VSWR is in a normal state (S714). If it is determined that the steady state, the control unit 22 ends the VSWR automatic control procedure. However, when the re-detected VSWR is in an abnormal state, it is determined whether it is impossible to convert the VSWR of the antenna to the normal state (S716). As described with reference to FIG. 6, whether or not it is impossible to convert the VSWR of the antenna to the normal state may be determined from whether the VSWR control operation is performed for the entire preset VSWR conversion range.
  • the controller 22 determines that it is impossible to convert the VSWR of the antenna to the normal state, and generates an alarm signal and transmits it to the RRH 3 ( S718).
  • the RRH 3 transmits the received alert signal to the eNodeB 2 (S720).
  • FIG. 8 is a detailed structural diagram of a first example VSWR converter and a driver
  • FIG. 9 is an equivalent circuit diagram of the VSWR converter of FIG. 8.
  • a VSWR converter according to an embodiment of the present invention may include first and second stubs respectively installed on a feeding line (FL) connected to radiating element (s) in an antenna.
  • the first and second auxiliary lines 242a and 242b are supported, and are configured to be movable by driving of the driving motor 232, which is a main component of the driving unit 23, so that the capacitance coupling amount is variable during movement.
  • the line variable part 242 which has a structure is provided.
  • the first and second stubs S1 and S2 extend in the radial direction of the feed line, and the first and second auxiliary lines 242a and 242b extend in the direction in which the first and second stubs S1 and S2 extend. It is installed in the same direction.
  • the first and second stubs S1 and S2 and the first and second auxiliary lines 242a and 242b are implemented to have a capacitance coupling region c while overlapping portions of both ends thereof.
  • area A enlarged by a circular dashed line shows a side structure of the second stub S2 and the second auxiliary line 242b.
  • the moving direction of the line variable part 242 is configured to be moved according to the direction in which the first and second stubs S1 and S2 are placed. In this case, the rotational force by the driving motor 232 is increased by using a rack and pinion gear structure.
  • the line variable part 242 may be configured to move left and right. As the line variable part 242 moves, the capacitance coupling region c between the first and second stubs S1 and S2 and the first and second auxiliary lines 242a and 242b may be varied.
  • the first and second stubs S1 and S2 are designed to have a ⁇ / 8 distance relative to the processing frequency.
  • the inductor component of the first and second stubs S1 and S2 and the first and second auxiliary lines 242a and 242b, and the first and second stubs S1 and S2 and the first is performed on the VSWR basis by the variable capacitance component of the variable capacitance coupling region c between the second auxiliary lines 242a and 242b.
  • the standing wave ratio refers to the height ratio of standing waves (ie, fixed waves generated by combining the traveling wave and the reflected wave) generated by the reflection at the antenna stage, and the VSWR characteristic is out of the normal range in a specific frequency band. Can be.
  • the standing wave is variable and the VSWR characteristic can be adjusted within the normal value in the frequency band outside the normal range.
  • the VSWR tuning operation can be performed in a relatively fine range.
  • a fine tuning may be very useful in a real environment.
  • the auxiliary device including the antenna is installed in the post, and then the auxiliary device and the RRH are connected through a feed cable, and the performance or characteristics of each of the equipments are individual. Even if both of them satisfy the reference values, it is often measured that the above VSWR is abnormal in the final connection thereof. This is largely due to cumulative tolerances as the equipments are manufactured by different manufacturers, and in this case, the problem may be solved by fine adjustment of characteristics.
  • the VSWR characteristic is out of the normal range due to the slight change in the structure / performance of the devices inside the antenna and the connection state between the devices, not only during initial installation but also according to changes in the use environment (such as climate change such as temperature and weather).
  • climate change such as temperature and weather
  • FIG. 8 illustrates a structure having two stubs S1 and S2 and two auxiliary lines 242a and 242b corresponding thereto
  • the present invention is not limited thereto, and a structure diagram having one or three stubs is provided. It will be possible.
  • the number of stubs and auxiliary lines may be determined according to the bandwidth of the antenna, and the number of stubs and auxiliary lines increases with wideband.
  • FIG. 10 is a detailed structural diagram of a second example of the VSWR converter and the driver
  • FIG. 11 is a view for explaining the principle of the VSWR converter of FIG.
  • a VSWR converter includes a dielectric 244a having a high dielectric constant placed on a feed line FL connected to radiating element (s) within an antenna;
  • a dielectric moving part 244 is supported to support the dielectric material 244a and configured to be movable along the feed line FL by driving of the driving motor 234, which is a main component of the driving part 23.
  • an area A enlarged by a circular dashed line shows a side structure of the dielectric 244a and the feed line FL in the dielectric moving part 244.
  • the movement direction of the dielectric moving part 244 is configured to be moved along the direction in which the feed line FL is placed, that is, in the longitudinal direction of the feed line, by the drive motor 234 using a rack and pinion gear structure or the like. Rotational force may be configured to move the dielectric moving portion 244. As the dielectric moving part 244 moves, the high impedance portion corresponding to the dielectric 244a on the feed line FL is changed, and the signal path on the feed line FL of the front end portion and the rear end portion of the high impedance portion FL is changed. The distance of is changed. Through this structure, frequency matching is performed in the VSWR criterion.
  • the dielectric moving part 244 moves along the longitudinal direction of the internal feeding line FL, and the length L of the front end portion of the internal feeding line FL based on the dielectric moving part 244. 1 ) and the length (L 2 ) of the trailing part change.
  • This change in length changes the impedance of the front end portion and the rear end portion of the internal feed line FL. Therefore, the overall impedance of the internal feed line FL, which is composed of the impedance formed between the dielectric 244a and the internal feed line, the impedance of the front end portion, and the impedance of the rear end portion, is changed, and accordingly, the standing wave is varied and is out of the normal range.
  • VSWR characteristics in the frequency band can be adjusted to within normal values.
  • FIG. 12 is a detailed structural diagram of a third example of the VSWR converter and the driver.
  • the VSWR converter converts electrical characteristics of an internal feed line to control the VSWR of the antenna, whereas the VSWR converter illustrated in FIG. 12 changes the transmission / reception characteristics of the radiating element to Control VSWR.
  • the VSWR converter according to another embodiment of the present invention includes a beam forming aid 246 installed at a distance that is appropriately spaced in the radial direction of each radiating element 11 of the base station antenna;
  • the beam forming aid 246 is movably supported so as to be close to or away from the radiating element 11, and the beam forming aid 246 is moved by driving the driving motor 236, which is a main component of the driving unit 23.
  • the beam forming aid 246 may be composed of, for example, a thin metal body that is generally circular. As such, the beam forming aid 246 may be provided for expanding the beam width by using a principle in which the radiation pattern of the beam is changed when an object having a dielectric constant is placed on a portion where the beam is radiated from the radiating element 11. have. At this time, when changing the distance between the beam forming assistant 246 and the radiating element 11, the transmission and reception characteristics of the radiating element 11 is changed, in the present invention, using the beam forming auxiliary 246, the radiating element ( By changing the transmission and reception characteristics of 11), a frequency matching operation is performed on the VSWR basis.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transmitters (AREA)

Abstract

La présente invention concerne un procédé pour commander un rapport d'onde stationnaire de tension (VSWR) d'une antenne à partir d'un dispositif secondaire, dans un système de station de base comprenant un dispositif principal et le dispositif secondaire comprenant l'antenne pour communiquer avec le dispositif principal. Le procédé comprend les étapes consistant : à détecter le rapport d'onde stationnaire de tension de l'antenne ; à ajuster une caractéristique de rapport d'onde stationnaire de tension de l'antenne lorsque le rapport d'onde stationnaire de tension détecté est un état anormal ; à transmettre le résultat d'ajustement au dispositif principal.
PCT/KR2015/006986 2014-08-29 2015-07-07 Procédé pour commander un rapport d'onde stationnaire de tension à partir d'une antenne de station de base WO2016032114A1 (fr)

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KR1020140114097A KR20160027415A (ko) 2014-08-29 2014-08-29 기지국 안테나의 정재파비 제어 방법

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CN113160661A (zh) * 2021-04-19 2021-07-23 杭州优必学科技有限公司 一种基于电压驻波比的编程积木控制方法及系统
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US20200044612A1 (en) * 2018-07-31 2020-02-06 Advanced Micro Devices, Inc. Transmitter dynamic rf power control via vswr detection for wireless radios

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CN110581741A (zh) * 2019-08-28 2019-12-17 三维通信股份有限公司 驻波异常位置检测方法、设备及介质
WO2021037135A1 (fr) * 2019-08-28 2021-03-04 三维通信股份有限公司 Procédé et dispositif de détection de position anormale d'onde stationnaire, et support
CN110581741B (zh) * 2019-08-28 2021-06-29 三维通信股份有限公司 驻波异常位置检测方法、设备及介质
WO2022135002A1 (fr) * 2020-12-25 2022-06-30 华为技术有限公司 Réseau de sources, antenne de station de base et dispositif de station de base
CN113160661A (zh) * 2021-04-19 2021-07-23 杭州优必学科技有限公司 一种基于电压驻波比的编程积木控制方法及系统
CN113160661B (zh) * 2021-04-19 2023-04-18 杭州优必学科技有限公司 一种基于电压驻波比的编程积木控制方法及系统

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