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由于有了专用分析处理系统,可能降低天线生产总成本,因此人们对天线辐射方向图的时域选通测量法日益感兴趣。本文介绍时域法的分析性研究,并辅以典型天线响应的计算机模拟结果,以说明测量精度与测试暗室大小及天线频率特性的关系。比较了频域法与时域法的误差,证实根据所要求的精度等级,时域选通法是频域法的一个可行的替代方法。
Because of the special analysis and processing system, the total cost of antenna production may be reduced, so people are increasingly interested in the time-domain gating method of antenna radiation pattern. This paper presents an analytical study of the time domain method, supplemented by computer simulation of the typical antenna response to illustrate the relationship between measurement accuracy and the size of the test chamber and the frequency characteristics of the antenna. Comparing the frequency domain method and the time domain method, it is proved that the time-domain gating method is a feasible alternative method in the frequency domain method according to the required accuracy grade.