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曲线轮廓光壁喇叭天线设计与分析

Keywords: 波纹喇叭,曲线轮廓光壁喇叭,高斯耦合效率,毫米波

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Abstract:

针对毫米波段波纹喇叭加工困难、加工费用昂贵的问题,提出一种由正弦曲线和高斯曲线组成的曲线轮廓光壁喇叭天线,采用基于有限元算法的高频电磁场仿真软件ANSOFTHFSS对该天线的电特性进行计算,并运用准光理论计算其高斯耦合效率.采用高频平面近场天线测试系统对喇叭实物进行测试,实测结果与波纹喇叭对比,这种曲线轮廓光壁喇叭天线的副瓣电平比波纹喇叭低6.59dB,增益高0.5dB,高斯耦合效率高0.9%,长度短15.8mm,而且易于加工,是一种可替代波纹喇叭的优良性能馈源.

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