+

WO2018133333A1 - Dispositif de détection de puissance pour détection de signal d'entrée radiofréquence à canaux multiples - Google Patents

Dispositif de détection de puissance pour détection de signal d'entrée radiofréquence à canaux multiples Download PDF

Info

Publication number
WO2018133333A1
WO2018133333A1 PCT/CN2017/091047 CN2017091047W WO2018133333A1 WO 2018133333 A1 WO2018133333 A1 WO 2018133333A1 CN 2017091047 W CN2017091047 W CN 2017091047W WO 2018133333 A1 WO2018133333 A1 WO 2018133333A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
input signal
input
temperature
power
Prior art date
Application number
PCT/CN2017/091047
Other languages
English (en)
Chinese (zh)
Inventor
曹丽萍
Original Assignee
深圳国人通信股份有限公司
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 深圳国人通信股份有限公司 filed Critical 深圳国人通信股份有限公司
Publication of WO2018133333A1 publication Critical patent/WO2018133333A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters

Definitions

  • the present invention relates to a power detecting device, and more particularly to a power detecting device for detecting multiple radio frequency input signals.
  • Multi-system integration platform (POI, POINT OF INTERFACE) is mainly used in large-scale buildings and municipal facilities that require multiple network access to effectively realize multi-signal multi-band combining functions.
  • the POI monitoring part needs to perform real-time detection on the input power of the multi-channel RF signal, and send the detected effective power value to the monitoring board through the 485 interface.
  • a conventional power detecting device performs input power detection for each radio frequency signal separately.
  • the advantage is that the circuit principle is simple and easy to implement, and avoids mutual interference between detection signals; the disadvantage is that multiple detection modules are required, and the whole device has a large volume, high cost and low integration.
  • the object of the present invention is to overcome the deficiencies of the above technologies, and provide a power detecting device for detecting multiple channels of radio frequency input signals, which has high integration and can detect the power of multiple RF input signals.
  • a power detecting apparatus for multi-channel radio frequency input signal detection includes an input interface for inputting multiple radio frequency input signals, and an input interface connected to the input interface for receiving the input interface. Inputting a signal and selecting a radio frequency switch portion of the radio frequency input signal to be power-detected; a power detecting portion connected to the radio frequency switch portion for receiving the radio frequency input signal sent by the radio frequency switch portion and performing power detection a microprocessor connected to the power detecting portion for controlling the radio frequency switching portion and the power detecting portion; connected to the microprocessor for detecting a temperature of the power detecting portion and detecting The temperature value is sent to the temperature detecting portion of the microprocessor.
  • the radio frequency switching portion includes a plurality of first-level radio frequency switches and a plurality of second-level radio frequency switches, and two input ends of each of the first-level radio frequency switches are respectively adjacent to each other Two-way RF input signal
  • the input interface is connected, and the outputs of the two adjacent first-stage RF switches are respectively connected to two input terminals of the second-stage RF switch.
  • the microprocessor is configured to output a high level and a low level to control the on and off between the two input ends and the output end of the first stage radio frequency switch, and output an off control signal to control the second stage. On and off between the two inputs and outputs of the RF switch.
  • the insertion loss of the first-stage RF switch and the second-stage RF switch is 0.65 ⁇ 1.04 dB
  • the isolation is 44 ⁇ 65 decibels and the return loss is 14 ⁇ 24 decibels.
  • the power detecting portion includes a plurality of detecting tubes and a plurality of temperature compensating circuits connected in one-to-one correspondence with the plurality of detecting tubes; each of the detecting tubes corresponds to one of the second-level radio frequency switches, And connecting to the output terminal of the corresponding second-stage radio frequency switch; the detecting tube is configured to convert the received radio frequency input signal into a corresponding detection voltage value, and send the signal to the microprocessor; each of the temperature compensation circuits Connected to the temperature detecting portion, configured to perform temperature compensation according to the temperature value detected by the temperature detecting portion and the detected voltage value detected by the corresponding detecting tube, and send the temperature compensation value to the microprocessor; The processor is configured to detect a power value of the corresponding radio frequency input signal according to the detection voltage value and the temperature compensation value.
  • the temperature compensation circuit has a temperature compensation range of ⁇ 25° C. to +55° C.
  • the temperature detecting portion includes an analog temperature sensor, the analog scale sensor has a detection scale factor of 10 millivolts per degree Celsius, and the output voltage value ranges from 100 millivolts to 2000 millivolts.
  • the analog temperature sensor detects a temperature range of -40 ° C to + 125 ° C.
  • each of the radio frequency input signals is located in one of the radio frequency signal cavities, and the power detecting portion and the microprocessor are respectively disposed on the PCB board and are respectively located in the detecting cavity And the control chamber.
  • a portion of the PCB between the two adjacent RF signal cavities is provided with a notch.
  • the present invention can effectively detect the input power of multiple frequency input signals of different frequency bands, and can make the power detection range It achieves ⁇ 40 dB, detection accuracy of ⁇ 2dB, high integration and low cost.
  • FIG. 1 is a schematic block diagram of a power detecting device for multi-channel RF input signal detection according to the present invention
  • FIG. 2 is a schematic structural view of a cover sub-chamber of the power detecting device shown in FIG.
  • FIG. 3 is a schematic view of a PCB board of the power detecting device shown in FIG. 1.
  • a power detecting apparatus for multi-channel RF input signal detection includes: an input interface for inputting multiple RF input signals; and an input interface for receiving an input interface; The input signal selects the radio frequency switching portion 20 of the radio frequency input signal for power detection; the power detecting portion connected to the radio frequency switching portion 20 for receiving the radio frequency input signal transmitted by the radio frequency switching portion 20 and performing power detection 30; a microprocessor 50 connected to the power detecting portion 30, for controlling the RF switching portion 20 and the power detecting portion 30; connected to the microprocessor 50 for detecting the temperature of the power detecting portion 30 and detecting the temperature The value is sent to the temperature detecting portion 40 of the microprocessor 50.
  • the present invention is further described by taking power detection of 12 radio frequency input signals as an example.
  • the 12 RF input signals are named RFIN_1 RF input signal, RFIN_2 RF input signal, RFIN_3 RF input signal... RFIN_11 RF input signal, RFIN_12 RF input signal.
  • the 12-channel RF input signal ranges from 800MHz to 2.3GHz, including 2G/3G/4G signals.
  • the radio frequency switching portion 20 includes six first-level radio frequency switches 21 and three second-level radio frequency switches 22, and two input ends of each first-level radio frequency switch 21 are respectively adjacent to two adjacent channels.
  • the input interface of the RF input signal is connected.
  • the two input ends of the first first stage RF switch 21 are respectively connected to the input interfaces of the RFIN_1 RF input signal and the RFI N_2 RF input signal, and the second first stage RF switch is connected.
  • the two inputs of 21 are connected to the RFIN_3 RF input signal and the input interface of the RFIN_4 RF input signal, and so on.
  • the outputs of the adjacent two first-stage RF switches 21 are respectively connected to the two input ends of a second-stage RF switch 22, for example, the outputs of the first and second first-stage RF switches 21 respectively Connected to two inputs of the first second stage RF switch 22, the outputs of the third and fourth first stage RF switches 21 respectively Connected to the two inputs of the second second stage RF switch 22, and so on.
  • the microprocessor 50 is configured to output high and low levels to control the on and off between the two input terminals and the output end of the first stage radio frequency switch 21 and to output two control signals to control the second stage radio frequency switch 22 On and off between input and output.
  • the microprocessor 50 outputs the first second stage radio frequency switch 22 The first input terminal's chirp signal and the second second stage radio frequency switch 22's second input terminal turn off signal, then the first first stage RF switch 21 output and the first second stage RF 22 is turned on, microprocessor 50 outputs a high level to the first first stage RF switch 21, then the first input of the first first stage RF switch 21 and the first first stage The output of the RF switch 21 is turned on,
  • the RFIN_1 RF input signal is turned on, the RFIN_2 RF input signal, the RFIN_3 RF input signal, and the RFI N_4 RF input signal are turned off, thereby selecting the RFIN_1 RF input signal for power detection.
  • the microprocessor 50 outputs the first input of the first second stage radio frequency switch 22 and the off signal of the second input of the first second stage radio frequency switch 22, then the first The output of the first stage RF switch 21 is connected to the first second stage RF switch 22, and the microprocessor 50 outputs a low level to the first first stage RF switch 21, then the first The second input of the first-stage RF switch 21 is connected to the output of the first first-stage RF switch 21, the RFIN_2 RF input signal is turned on, the RFIN_1 RF input signal, the RF IN_3 RF input signal, and the RFIN_4 RF input. The signal is turned off, thereby selecting the RFIN_2 RF input signal for power detection.
  • the microprocessor 50 outputs the chirp signal of the second input of the first second stage radio frequency switch 22 and the off signal of the first input end of the first second stage radio frequency switch 22, and then the second The output of the first stage RF switch 21 is connected to the first second stage RF switch 22, and the microprocessor 50 outputs a high level to the second first stage RF switch 21, then the second The first input of the primary RF switch 21 is connected to the output of the second first stage RF switch 21, the RFIN_3 RF input signal is activated, the RFIN_1 RF input signal, the RF IN_2 RF input signal, and the RFIN_4 RF input. The signal is turned off, thereby selecting the RFIN_3 RF input signal for power detection.
  • the microprocessor 50 outputs a chirp signal of the second input of the first second stage radio frequency switch 22 and a turn off signal of the first input end of the first second stage radio frequency switch 22, and then the second First level RF switch 21
  • the output is connected to the first second stage RF switch 22, the microprocessor 50 outputs a low level to the second first stage RF switch 21, and the second first stage RF switch 21 is second.
  • the input terminal is connected to the output of the second first-stage RF switch 21, the RFIN_4 RF input signal is turned on, the RFIN_1 RF input signal, the RF IN_2 RF input signal, and the RFIN_3 RF input signal are turned off, thereby selecting the RFIN_4 RF input.
  • the signal is tested for power.
  • the RF switch section 20 can simultaneously select three RF input signals of different frequency bands for power detection.
  • the insertion loss of the first stage radio frequency switch 21 and the second stage radio frequency switch 22 is 0.65 to 1.04 decibels, the isolation is 44 to 65 decibels, and the return loss is 14 to 24 decibels, and the frequency is The range is 50MHz ⁇ 6000MHz, and the Pldb value is about 35dBm.
  • the power detecting portion 30 includes three detecting tubes 31 and three temperature compensating circuits (not shown) connected to the three detecting tubes 31 one-to-one.
  • the detector tube 31 is an RMS detector tube, operating at a frequency of 100 MHz to 3.9 G Hz, with a detection accuracy of ⁇ ldB, and an input dynamic range of -65 dBm to +7 dBm, which has good temperature stability.
  • Each detector tube 31 corresponds to a second stage RF switch 22 and is coupled to the output of the second stage RF switch 22.
  • the detector tube 31 is operative to convert the received RF input signal to a corresponding detection voltage value and to the microprocessor 50.
  • Each temperature compensating circuit is connected to the temperature detecting portion 40 for temperature compensation based on the temperature value detected by the temperature detecting portion 40 and the detected detecting voltage value detected by the detecting tube 31, and transmits the temperature compensation value to the microprocessor 50.
  • the microprocessor 50 is configured to detect the power value of the corresponding RF input signal based on the detected voltage value and the temperature compensation value.
  • the RF switch section 20 selects the RFIN_1 RF input signal, the RFIN_5 RF input signal, and the RFIN_9 RF input signal for power detection.
  • the corresponding three detectors 31 will receive the RFIN_1 RF input signal, the RFIN_5 RF input signal, and the RFIN_9 RF input.
  • the signals are respectively converted into corresponding detection voltage values, and sent to the microprocessor 50, and the corresponding three temperature compensation circuits perform temperature compensation according to the temperature value detected by the temperature detecting portion 40 and the detection voltage value detected by the corresponding detector tube 31, and
  • the temperature compensation value is sent to the microprocessor 50, and the microprocessor 50 can detect the power values of the corresponding RFIN_1 RF input signal, RFIN_5 RF input signal, and RFIN_9 RF input signal according to the detection voltage value and the temperature compensation value.
  • the temperature compensation circuit has a temperature compensation range of ⁇ 25° C. to +55° C.
  • the temperature detecting portion 40 includes an analog temperature sensor 41, and the detection scale factor of the analog temperature sensor 51 is 10 millivolts per degree Celsius, the output voltage range is 100 millivolts to 2000 millivolts, and the detected temperature value is obtained by outputting the voltage value to the microprocessor 50.
  • the detected temperature range is -40 ° C to + 125 ° C.
  • the detection accuracy is ⁇ 2 °C.
  • the analog temperature sensor 41 is adjacent to the detector tube 31 to detect a relatively accurate temperature value.
  • the power detecting device of the present invention further includes a bottom plate, a cover plate 80 mounted to the bottom plate, and a PCB board 90 mounted between the bottom plate and the cover plate 80, and formed between the bottom plate and the cover plate 80.
  • a box body having a size of 172.7 mm * 61.1 mm * 22 mm.
  • PCB board adopts double panel, FR-4 board, dielectric constant 1.2-4. 6, thickness 0.8mm, gold plating process, size 172.6mm*61mm, top surface distribution component and RF trace of PCB board 90, The bottom surface distributes the control line traces.
  • the cover plate 80 and the PCB board 90 form mutually independent 12 RF signal cavities 81, the detection cavity and the control cavity 83, and the power supply cavity 84.
  • Each RF input signal is located in a RF signal cavity 81. Internally, the spatial isolation between the RF input signals is guaranteed to ensure the isolation between the RF input signals.
  • 1 2 RF signal cavities 81 are sequentially distributed from left to right along one side of the cover plate 80, and the RF input signal frequencies of the 12 RF signal cavities 81 are 2370 MHz-2390 MHz, 2320 MHz-2370 MHz from left to right.
  • a portion of the PCB board 90 located between the adjacent two RF signal cavities 81 is provided with a notch 91, which reduces interference between the RF input signals of each channel, and further ensures spatial isolation between the RF input signals of the respective channels. .
  • the power detecting portion 30, the microprocessor 50 and the power supply portion are respectively disposed on the PCB board 90 and are respectively located in the detecting cavity, the control cavity 83, and the power supply cavity 84.
  • the detection chamber is further divided into three independent detection tubes, which are placed in the cavity 82, and three detection tubes 31 are respectively located in the three detection tube placement chambers 82.
  • the present invention can effectively detect the power of multiple frequency input signals of different frequency bands, and can achieve a power detection range of ⁇ 40 (18, detection accuracy ⁇ 2dB, high integration, low cost;
  • the design and the box cavity design meet the high isolation requirements between the RF input signals, ensuring the accuracy of power detection.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

La présente invention concerne un dispositif de détection de puissance pour la détection de signal d'entrée radiofréquence à canaux multiples. Le dispositif comprend une interface d'entrée pour entrer des signaux d'entrée radiofréquence à canaux multiples, une partie de commutation radiofréquence reliée à l'interface d'entrée et utilisée pour recevoir des signaux entrés par l'interface d'entrée et sélectionner des signaux d'entrée radiofréquence à soumettre à une détection de puissance, une partie de détection de puissance reliée à la partie de commutation radiofréquence et utilisée pour recevoir des signaux d'entrée radiofréquence envoyés par la partie de commutation radiofréquence et effectuer une détection de puissance, un microprocesseur relié à la partie de détection de puissance et utilisé pour commander la partie de commutation radiofréquence et la partie de détection de puissance, et une partie de détection de température reliée au microprocesseur et utilisée pour détecter la température de la partie de détection de puissance et envoyer une valeur de la température détectée au microprocesseur. Dans la présente invention, la puissance d'entrée de signaux d'entrée radiofréquence à canaux multiples sur différentes bandes de fréquence peut être détectée en temps réel, et un niveau d'intégration élevé et des coûts faibles sont réalisés.
PCT/CN2017/091047 2017-01-19 2017-06-30 Dispositif de détection de puissance pour détection de signal d'entrée radiofréquence à canaux multiples WO2018133333A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720089620.6U CN206472134U (zh) 2017-01-19 2017-01-19 用于多路射频输入信号检测的功率检测装置
CN201720089620.6 2017-01-19

Publications (1)

Publication Number Publication Date
WO2018133333A1 true WO2018133333A1 (fr) 2018-07-26

Family

ID=59704374

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/091047 WO2018133333A1 (fr) 2017-01-19 2017-06-30 Dispositif de détection de puissance pour détection de signal d'entrée radiofréquence à canaux multiples

Country Status (2)

Country Link
CN (1) CN206472134U (fr)
WO (1) WO2018133333A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107907871A (zh) * 2017-12-28 2018-04-13 成都嘉泰华力科技有限责任公司 一种多通道信号功率检测设备
CN108449116B (zh) * 2018-04-27 2021-06-18 广州杰赛科技股份有限公司 多系统接入平台透传端口损耗的检测方法、装置及系统
CN108768455B (zh) * 2018-04-27 2021-06-18 广州杰赛科技股份有限公司 多系统接入平台损耗的检测方法、装置和损耗检测系统
WO2021081989A1 (fr) * 2019-11-01 2021-05-06 华普特科技（深圳）股份有限公司 Circuit de commande de détection en temps partagé, système d'émission-réception sans fil et procédé de commande de détection en temps partagé associé

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090067351A1 (en) * 2007-09-07 2009-03-12 Andreas Wiesbauer Power Detector Radio Frequency Multiplexer
CN201315586Y (zh) * 2008-12-10 2009-09-23 芯通科技（成都）有限公司 一种多路射频信号复用检波装置
CN101635943A (zh) * 2008-07-24 2010-01-27 中兴通讯股份有限公司 宽带功率检测方法和装置
CN103457677A (zh) * 2012-05-31 2013-12-18 中兴通讯股份有限公司 Tdd系统中多通道多载波功率检测的方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090067351A1 (en) * 2007-09-07 2009-03-12 Andreas Wiesbauer Power Detector Radio Frequency Multiplexer
CN101635943A (zh) * 2008-07-24 2010-01-27 中兴通讯股份有限公司 宽带功率检测方法和装置
CN201315586Y (zh) * 2008-12-10 2009-09-23 芯通科技（成都）有限公司 一种多路射频信号复用检波装置
CN103457677A (zh) * 2012-05-31 2013-12-18 中兴通讯股份有限公司 Tdd系统中多通道多载波功率检测的方法及装置

Also Published As

Publication number Publication date
CN206472134U (zh) 2017-09-05

Similar Documents

Publication Publication Date Title
WO2018133333A1 (fr) Dispositif de détection de puissance pour détection de signal d'entrée radiofréquence à canaux multiples
CN101526564B (zh) 功率与驻波比的检测装置及方法
CN103986488B (zh) 一种高性能lte信道模拟器宽带射频接收机
JP2006295375A5 (fr)
WO2019212830A3 (fr) Systèmes frontaux à terminaison commutée pour améliorer des performances de distorsion d'intermodulation
WO2008089317A3 (fr) Circuits, systèmes et procédés de translation de fréquence et de distribution de signaux
CN105490758A (zh) 高精度射频驻波检测方法
CN216390996U (zh) 一种2.4GHz射频开关电路及射频前端模组
MX2020007144A (es) Deteccion de antena a traves de medicion de ruido.
CN107994958B (zh) 一种宽带侦测接收机的通道相位一致性调试系统及方法
RU2012124117A (ru) Электронный сфигмоманомент
US11296736B2 (en) Time-sharing detection control circuit, wireless transceiver system and time-sharing detection and control method
EP1569353A3 (fr) Circuit hautes fréquences
CN204228950U (zh) 一种雷达系统l波段收发机
CN103067036A (zh) 一种非连续频谱的射频接收装置及其方法
CN107370471B (zh) 一种pxi总线可编程放大/衰减器及其校准方法
WO2016094376A3 (fr) Coupleur rf réglable
WO2020107859A1 (fr) Appareil d'étalonnage et de surveillance et système d'antenne
CN202385088U (zh) 一种射频收发功放组件
KR20130113240A (ko) 임피던스 정합 장치
CN205945653U (zh) 一种多通道集中式下变频器
CN204439828U (zh) 一种双向多工作模式通道选择及信号取样电路
CN206602526U (zh) 一种多工位无源互调测试装置
CN201637844U (zh) 用于s波段雷达微波组件测试的信号转接专用设备
CN106452398B (zh) Hub模块

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17893026

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17893026

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载