基于定向耦合器的高动态范围矢量阻抗测量模块设计

doi:10.16180/j.cnki.issn1007-7820.2023.11.003

摘要/Abstract

摘要：

针对高动态范围矢量阻抗测量模块的设计难点,文中采用定向耦合器结合高动态范围射频(Radio Frequency,RF)对数放大器,设计了一种基于定向耦合器的矢量阻抗测量模块。设计给出了软硬件设计框架,推导了该模块的数学原理,完成了模块实验验证与测试。该设计充分利用了定向耦合器的特点,所实现的测试系统体积小且可扩展性好,测试速度快、效率高。该设计也可扩展为监控测量模块,应用于通信设备中,作为通信发射机的天线监测部件或功率强度控制部件。在实验验证后,利用此设计方案开发了多款实际应用。利用文中设计的高动态范围覆盖了从20~400 W的使用场景,取得了良好的应用效果,证明所提设计具有良好的应用与扩展性以及较高的实用价值。

关键词: 定向耦合器, 矢量阻抗, 动态范围, 阻抗测量, 反射系数, 相位差, 入射信号, 反射信号

Abstract:

In view of the design difficulties of the vector impedance measurement module with a high dynamic range, this study designs a vector impedance measurement module based on the directional coupler using the directional coupler combined with the high-dynamic-range RF (Radio Frequency) logarithmic amplifier. The hardware and software design framework is given, the mathematical principle of the module is deduced, and the experimental verification and testing of the module are completed. The design makes full use of the characteristics of directional coupler, and the test system is small in size, good in scalability, fast in test speed and high in efficiency. The design can also be extended to a monitoring and measuring module, which can be used in communication equipment as an antenna monitoring component or power intensity control component of communication transmitter. After the verification, a number of practical applications have been developed using this design scheme. The high dynamic range of the proposed designed covers the application scenarios from 20~400 W, and obtains good application effect, which proves that the proposed design has good application, expansibility and high practical value.

Key words: directional coupler, vector impedance, dynamic range, impedance measurement, reflection coefficient, phase difference, incident signal, reflected signal

中图分类号:

TN98

王鹏,李翔宇. 基于定向耦合器的高动态范围矢量阻抗测量模块设计[J]. 电子科技, 2023, 36(11): 14-18.

WANG Peng,LI Xiangyu. Design of High-Dynamic-Range Vector Impedance Measurement Module Based on Directional Coupler[J]. Electronic Science and Technology, 2023, 36(11): 14-18.

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参考文献 20

[1]	卢玲, 邵吟. 一种矢量阻抗测量电路的原理与设计[J]. 杭州电子科技大学学报, 2012, 32(5):250-253.
	Lu Ling, Shao Yin. The principle and design of a vector impedance measurement circuit[J]. Journal of Hangzhou Dianzi University, 2012, 32(5):250-253.
[2]	马润. 矢量天调研究[D]. 西安: 西安电子科技大学, 2014:5-15.
	Ma Run. The research of vector antenna tuner[D]. Xi'an: Xidian University, 2014:5-15.
[3]	林东. 天线阻抗自动测试系统的研制[J]. 电脑知识与技术, 2019, 15(24):240-241.
	Lin Dong. Development of an automatic measurement system for antenna impedance[J]. Computer Knowledge and Technology, 2019, 15(24):240-241.
[4]	董文庆. 宽带耦合线定向耦合器的综合与设计[D]. 成都: 电子科技大学, 2014:35-47.
	Dong Wenqing. The integrated design of broadband coupled-line directional coupler[D]. Chengdu: University of Electronic Science and Technology of China, 2014:35-47.
[5]	杜金钟. 变电站接地网的高精度电磁探测技术研究[J]. 电力设备管理, 2020(5):40-41.
	Du Jinzhong. Research on high-precision electromagnetic detection technology of substation grounding grid[J]. Electric Power Equipment Management, 2020(5):40-41.
[6]	余威. 无反射定向耦合器研究与设计[D]. 成都: 电子科技大学, 2021:40-58.
	Yu Wei. Research and design of reflectionless directional coupler[D]. Chengdu: University of Electronic Science and Technology of China, 2021:40-58.
[7]	潘于. 微波低噪声晶体管放大器分析与设计[D]. 武汉: 华中科技大学, 2005:30-39.
	Pan Yu. Analysis and design of microwave low noise transistor amplifier[D]. Wuhan: Huazhong University of Science and Technology, 2005:30-39.
[8]	汤静, 周璟. 一种短波发射机耦合鉴别器的设计[J]. 通信与广播电视, 2014, 2(2):1-8.
	Tang Jing, Zhou Jing. Design of coupling discriminator for shortwave transmitter[J]. Communication and Audio Viedo, 2014, 2(2):1-8.
[9]	童俊. 30-150 MHz宽带双定向耦合器的设计与实现[D]. 武汉: 华中科技大学, 2013:21-49.
	Tong Jun. Design of dual directional in 30-150 MHz broadband[D]. Wuhan: Huazhong University of Science and Technology, 2013:21-49.
[10]	秦旭. 1 kW短波广播天馈系统的设计[J]. 桂林电子科技大学学报, 2017, 37(3):181-186.
	Qin Xu. Design of an antenna system for 1 kW shortwave radio[J]. Journal of Guilin University of Electronic Technology, 2017, 37(3):181-186.
[11]	郑仁平, 杨青慧, 张怀武. 一种双耦合双混频中频信号功率反馈电路[J]. 电子科技, 2019, 32(12):1-5.
	Zheng Renping, Yang Qinghui, Zhang Huaiwu. A power feedback circuit of IF signal with dual-coupled and dual-mixed[J]. Electronic Science and Technology, 2019, 32(12):1-5.
[12]	沈廷鳌, 涂亚庆, 刘翔宇, 等. 基于相关原理的非整周期信号相位差测量算法[J]. 仪器仪表学报, 2014, 17(9):2153-2160.
	Shen Tingao, Tu Yaqing, Liu Xiangyu, et al. Research onphase difference measurement for non-integer period sampling signal based on correlation theory[J]. Chinese Journal of Scinece Instrument, 2014, 17(9):2153-2160.
[13]	曾玲, 陈伟, 陶金. 低信噪比正弦信号相位差测量算法对比研究[J]. 电子测量技术, 2017, 18(1):71-75,89.
	Zeng Ling, Chen Wei, Tao Jin. Comparative study of the phase difference measurement algorithms for low signal to noise ratio sine signal[J]. Electronic Measurement Technology, 2017, 18(1):71-75,89.
[14]	王超. ICP光源中阻抗匹配的研究[D]. 武汉: 中国地质大学, 2010:14-24.
	Wang Chao. The research of impedance matching for ICP source[D]. Wuhan: China University of Geosciences, 2010:14-24.
[15]	侯保国. 射频阻抗基准[J]. 中国计量, 1998, 2(5):33-39.
	Hou Baoguo. RF Impedance benchmark[J]. China Metrology, 1998, 2(5):33-39.
[16]	赖展军, 卜斌龙, 冯穗力. 软件无线电在矢量反射系数测量中的应用[J]. 微波学报, 2019, 20(4):6-10.
	Lai Zhanjun, Bu Binlong, Feng Suili. Application of software radio in vector reflection coefficient measurement[J]. Journal of Microwaves, 2019, 20(4):6-10.
[17]	张亚平. 无源超高频RFID标签设计与实现[D]. 武汉: 华中科技大学, 2012:18-25.
	Zhang Yaping. Design and implementation of passive UHF RFID tags[D]. Wuhan: Huazhong University of Science and Technology, 2012:18-25.
[18]	陈晓俐, 薛焕杰, 官伯然. 一种宽带高方向性微带定向耦合器[J]. 电子科技, 2021, 34(1):1-4.
	Chen Xiaoli, Xue Huanjie, Guan Boran. A broadband high directional microstrip directional coupler[J]. Electronic Science and Technology, 2021, 34(1):1-4.
[19]	毛云山, 尉旭波. 一种宽频带大动态AGC电路设计[J]. 电子科技, 2021, 34(2):57-61.
	Mao Yunshan, Wei Xubo. Design of a broadband large dynamic AGC circuit[J]. Electronic Science and Technology, 2021, 34(2):57-61.
[20]	史燕波. 模块化短波电台的设计与实现[D]. 成都: 电子科技大学, 2018:40-45.
	Shi Yanbo. Design and implementation of modular short wave radio[D]. Chengdu: University of Electronic Science and Technology of China, 2018:40-45.