远场天线测试系统的研究与实现

Research and Implementation of Far Field Antenna Testing System

针对天线参数测试过程及测试要求,分析天线参数测试中的主要问题,研究实际测试过程中环境因素对天线参数测量结果的影响,提出了一种基于虚拟仪器技术的远场天线性能参数自动测试系统的设计方案,详细阐述了该方案的系统组成部分与工作原理,包括矢量网络分析仪、天线测试转台与吊杆的控制原理以及数据采集的时序设计,结合Matlab实现了对影响因素的误差补偿与天线性能参数的测试计算方法,利用数据库技术实现天线测试数据的存储、读取与报告打印,通过现场测试试验验证了该方案的可靠性与可行性。

Aiming at the process and requirements of antenna parameters test,we analyze the main problems in the antenna parameters test,study the influence of environmental factors on measurements in the actual test process,and propose a design of an automatic test system based on virtual instrument technology for far field antenna performance parameters. We elaborate the system components and working principles,including the control principles of a vector network analyzer,an antenna test turntable and a derrick and the timing design of data acquisition. Combined with Matlab,we realize the error compensation of affecting factors and the testing calculation methods of antenna performance parameters,use database technology to accomplish antenna test data storage,read and report printing,and verify the reliability and feasibility of the scheme through field test experiment.