加载介质覆盖层的圆柱共形微带天线的全波分析

Full-Wave Analysis of Cylindrically Conformal Microstrip Antennas with Dielectric Superstrates

基于严格的全波方法分析计算了介质薄层覆盖下由探针激励的圆柱共形微带天线的输入阻抗和辐射方向图。首次详细地推导出了此结构下适于数值计算的微带帖片上的表面电流形式,并通过矩量法求解电场积分方程得到感应电流的分布。最终,通过数值结果揭示出了覆盖介质层对天线特性的影响并且与已发表文献及其他数值方法的结果进行对比,证明了方法的正确性。

The input impedance and radiation patterns of the probe-fed cylindrically conformal microstrip antennas with a dielectric superstrate are analyzed based on a rigorous full-wave approach. The induced current distribution on the patch, which is the kemel of the electric field integral equation, is detailedly derived in the spectral domain for the first time and is solved by using the method of moment （MoM）. Consequently, numerical results are used to reveal the effects of the dielectric superstrate to the characteristics of the antenna and are compared with the results from published references and other numerical solutions for demonstrating the accuracy of the analysis.