电场辐射敏感度测试的天线输入功率计算方法

Three Methods of Calculating Antenna Input Power in Electrical Field Radiated Susceptibility Test

介绍了电场辐射敏感度测试中,在给定场强值E和天线距离的条件下,利用天线参数之间的相互关系,计算天线所需输入功率的三种不同方法:第一种是利用弗里斯传输公式中的变式;第二种是利用发射天线系数中场强与输入电压之间的关系;第三种是利用图表数据和相关公式。结果表明:通过三种方法计算的天线输入功率基本一致。

During the electric field radiated sensitivity test,under the conditions of a fixed electrical field strength value and same antenna distance,there are three different methods to calculate the antenna required input power by using the relationships among various antenna parameters.The first method is using the variant of Friis transmission formula,the second method is using the relationship of field strength and input voltage for transmit antenna factor,and the third method is using a given chart data from the manufacturer and related formulas.By mean of comparing the results from these three calculation methods,the input powers are in accordance with each other generally.