双层介质周期漏波天线的辐射特性分析  

Radiation Characteristics Analysis of Periodic Leaky-wave Antennas with Double-layer Substrates

作　　者：林洁[1] 万国宾[1] 万伟[1] 周卫来[1] 

机构地区：[1]西北工业大学电子信息学院,西安710072

出　　处：《现代雷达》2008年第5期96-98,102,共4页Modern Radar

基　　金：航空基础科学基金资助课题(98F53028)

摘　　要：利用互易性和谱域矩量法研究了具有双层介质衬底的平面二维周期性漏波天线的远区辐射场特性。首先根据互易原理,给出了周期漏波天线辐射远场的计算公式;然后采用整域基函数谱域矩量法计算贴片阵列的散射场,利用反射系数考虑了接地介质板的贡献;最后通过实际算例验证该方法的正确性,并分析介质衬底的介电常数、厚度及频率等参数对远区辐射场特性的影响,给出数值结果。The far-field radiation characteristics of a two-dimensional(2-D)periodic leaky-wave antennas(LWA)which consists of a periodic array of metal patch on a grounded double-layer dielectric substrate are studied.Reciprocity principle of cal- culation of the far-field pattern is used to avoid the calculation of the exact near field.Then we use a periodic spectral-domain method of moments( MoM)to determine the scattering field excited by the current induced on the metal patches and considere the influence of the ...

关 键 词：漏波天线 周期阵列 互易 矩量法 

分 类 号：TN822[电子电信—信息与通信工程]