双介质栅漏波天线的改进微扰法分析

Improved Perturbation Analysis of Double Dielectric Grating Antenna

本文用改进的微扰法分析了双介质栅漏波天线的辐射特性,并将它与单介质栅漏天线的辐射特性作了比较。结果表明;在辐射强度相同的情况下,双栅天线有更小的几何尺寸,这在对系统重量和体积有严格限制的应用场合无疑有重要意义。文中所得数据与基于场匹配方法得到的精确值进行了比较,证明本文方法在保持与精确方法有相同精度的情况下极大地简化了分析和计算过程。

The radiation characteristcs of the double dielectric grating leaky-wa ve antenna are analyzed by the improved perturbation method. The results indicaet that under the co(?)dition of the same radiation inte sity, the double die-lectric graing anten(?)a has relatively smaller dimensions than that of the single one.It is untdoubtly of great importance in the case that the limitation of the weight and volume of system is strictly required. The results obtained from this paper are compared with the exact solution based on the mode matching method. It is justified that the perturbation procedure yields as highly results as the rigorous method with extreme simplicity of the analysis and calculations.