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本文建立了平面近场测试距离和截断误差的计算模型,分别用直接计算法和由近场数据进行近-远场变换的方法计算了天线的远场方向图,给出了计算结果,分析了平面近场测试中测试距离、截断电平对于测试结果的影响。
In this paper, a calculation model of the near field test distance and the truncation error is established. The far field pattern of the antenna is calculated by using the direct calculation method and the near-far-field transform from the near-field data respectively. The calculation results are given, The influence of test distance and cutoff level on the test results in the plane near field test.