PBG结构圆柱形微带贴片天线的设计与仿真

本文利用光子晶体带隙(PBG)结构的特点，将特殊设计的 PBG 结构应用于圆柱形微带贴片天线中。在同轴线馈电的圆柱形微带贴片天线的介质上蚀刻出按一定规律排列的 PBG 结构，并基于 HFSS 对特殊设计的 PGB 结构圆柱形微带贴片天线和普通的圆柱形微带贴片天线进行仿真和优化，仿真结果表明，按照一定规律排列的 PBG 结构可以有效抑制天线表面波的传播，明显提高圆柱形微带贴片天线的带宽和增益，有效改善圆柱形微带贴片天线的辐射方向图，实现天线性能的优化设计。

Design and simulate on cylindrical conformal microstrip patch antenna with PBG structure

This paper proposes a new structure named Photonic Band Gap(PBG)for microstrip patch antenna.The new PBG structure is etched on the dielectric plane of a probe-fed microstrip patch antenna and arranged by a certain rule. The cylindrical conformal microstrip patch antenna with PBG structure was simulated by HFSS.The simulation results indicate that using the PBG structure which is arranged by a certain rule on the antenna could suppresse the propagation of the surface wave,significantly improve the cylindrical microstrip patch antenna bandwidth and gain,effectively improve the cylindrical microstrip patch antenna radiation pattern.