N层介质覆盖矩形微带天线的分析

ANALYSIS OF RECTANGULAR MICROSTRIP PATCH ANTENNAS COVERED WITH N-LAYER DIELECTRIC

本文给出了在三维电流源激励的情况下,N层介质覆盖微带天线结构的谱域格林函数的新的解析公式,建立了分析这类天线的谱域全波分析模型,并利用有效的数值技术求解出积分方程,得到了天线的贴片表面电流,进而可得到天线的输入电压驻波比和辐射方向图等有关特性参数.实验结果证实了理论计算的正确性.

A generalized spectral Green's function formulation of N-layer superstrata structure is given with three dimension sources, which is a set of closed form formulas. A full-wave analysis model for rectangular microstrip antennas covered with N-layer dielectric has been established by using the above spectral Green's function. The unknown surface current density on the microstrip patch for such structure is found as the solution of an integral equation. The input VSWR and radiation patterns of antenna are also obtained. The numerical results have been verified by the experimental results.