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首先介绍了天线罩常见外形、分类和罩壁形式;其次采用电磁波反射、透射和等效传输线理论,建立了分析功率传输系数和计算插入相位移的方法;最后给出了石英氰酸酯平板宽频特性测试流程和结果,理论和测试结果共同验证了等效传输线理论的正确性,平板尺寸0.976 m×0.976 m×0.001 8 m,测试频段1.2~18 GHz,测试水平方位角-40°~40°内,石英氰酸酯平均功率传输系数均大于60%,表现出了良好的宽频特性;测试结果为天线罩蒙皮材料的选择提供了参考数据。
Firstly, the common shape, classification and cover form of the radome are introduced. Secondly, the method of analyzing the power transmission coefficient and calculating the phase shift is established by using electromagnetic wave reflection, transmission and equivalent transmission line theory. Finally, The characteristic test flow and result, theory and test result verify the correctness of the equivalent transmission line theory. The plate size is 0.976 m × 0.976 m × 0.001 8 m, the test frequency band is from 1.2 GHz to 18 GHz, and the test horizontal azimuth is from -40 ° to 40 ° The average power transfer coefficient of both in-situ and in-situ cyanocyanates was more than 60%, which showed good broadband characteristics. The test results provided reference data for the selection of radome skin materials.