如何进行场均匀面的校准

How to calibrate the uniform field area

在电磁兼容试验中,辐射敏感度测试是必不可少的一项试验,而此试验需要校准电波暗室内的场均匀面。为此应组建测试系统,采取固定功率法或固定场强法,对得到的数据进行分析,最后测得具有相近场强的一个均匀面,并对测试系统的线性进行验证,证明测试系统具备此项测试的能力。

In the EMC tests, radiated susceptibility is a necessary experiment. It needs a uniform field area in the anechoic chamber. So the test system should be set up. This paper used the constant power calibration method or constant field strength calibration method, analysed the data to get a uniform field area with the similar field strength, and then validated the linearity of the test system to verify that the system is suitable for radiated susceptibility test.