目前, 辐射场均匀性主要采用单点多次测试的方式来实现, 该方式将不可避免地引入因辐照信号自身时变特性带来的测量误差; 此外, 单点多次测试极大地增加了测试时间、测试效率低下。为解决这些问题, 本文设计了一种可实现一次多点测试、测试区域可自动调节的装置, 仿真表明: 该装置可满足500 mm×500 mm~1500 mm×1500 mm区域辐射场9点均匀性测试; 在此基础上, 在1000 mm×1000 mm测试区域, 针对1.35 GHz和2.88 GHz两个频点开展了实验验证, 实验表明: 设计的测试装置可满足辐射场均匀性9点自动测试要求, 大幅提高了测试效率和自动化程度。

The uniformity of high-intensity electromagnetic radiation field is mainly realized by multiple tests at a single point presently, which will inevitably lead to measurement errors due to the time-varying characteristics of the radiation signal itself. Moreover, the method of multiple tests at a single point greatly increases the test time and lowers the test efficiency. To solve these problems, a device realizing multi-points test was designed. The test area can be adjusted automatically. The simulation results show that the device can meet the 9-point uniformity test of radiation field in the range of 500 mm×500 mm-1500 mm×1500 mm. In the 1000 mm×1000 mm test area, the experimental verification was carried out for the two frequency points of 1.35 GHz and 2.88 GHz. The experiment shows that the designed test device can meet the 9-point automatic test requirement of high-intensity radiation field uniformity, which greatly improves the test efficiency and automation.