用于通信系统测量的射频开关矩阵

RF switch matrix for communication system measurement

为了解决通信系统测量时需要频繁更换测量仪器的问题,分析通信系统的测量类别、接口要求及常用通信测量仪器的特性、输入输出方式、频率使用范围、功率限制等指标。在此基础上设计了用于通信系统测量的射频开关矩阵,采用高性能程控开关切换测量仪器,在信号通路上增加衰减器控制信号功率,将待测通信系统和多种通信测量仪器有机组合,构成一个完整的测量系统。射频开关矩阵可以进行灵活连接,实现多入多出。所有测量仪器都使用射频开关矩阵选择,测量仪器受限于实验空间的情况得到极大改善。测量时不需手动更换待测模块和测量仪器,只需在射频开关矩阵的操作界面进行选择,即可方便地在仪器常开状态下进行测量且不会对仪器产生影响。

Since the measuring instruments need to be changed frequently in the measurement of communication system,the measurement categories,interface requirements,characteristics,input and output modes,frequency range,power limit and other indicators of common communication measuring instruments are analyzed.On this basis,the RF switch matrix used for communication system measurement is designed,high-performance programmed switches are used to switch the measuring instruments,the attenuator is added to the signal path to control the signal power,and the communication system under measurement and various communication measuring instruments are organically combined to form a complete measuring system.The RF switch matrix can be connected flexibly to realize multi-input and multi-output.All instruments are selected by RF switch matrix,and the conditions which the instruments are restrained by experiment space are eliminated.When measuring,it is not necessary to manually replace the module under measurement and the measuring instrument,but only need to perform selection in the operation interface of the RF switch matrix,so that the instrument can be measured easily in the normally open state without affecting the instrument.