双频HIS的设计及其在微带天线RCS减缩中的应用  

Dual-Band High Impedance Surface Structure Design and Its Application to RCS Reduction of Microstrip Antenna

作　　者：乔志壮[1] 龚书喜[1] 徐云学[1] 

机构地区：[1]西安电子科技大学天线与微波技术重点实验室,西安710071

出　　处：《微波学报》2013年第2期44-48,共5页Journal of Microwaves

基　　金：新世纪优秀人才支持计划资助(NCET-11-0690)

摘　　要：设计了一种新型双频高阻抗表面(HIS)结构,并将其应用在双频微带天线的带内雷达散射截面(RCS)减缩中。通过在蘑菇状EBG结构的表面贴片开槽实现两个同相反射相位带隙,将该HIS结构加载在双频微带天线周围。仿真和实测结果表明,当天线周围加载HIS结构后,天线辐射性能基本不变,同时带内RCS分别获得5.5dB和6.5dB的减缩。A novel high impedance surface （HIS） structure with two in-phase reflection band gaps is presented to reduce the in-band radar cross section （RCS） of microstrip antenna. The HIS structure is constructed by etching the slots on the patch of a mushroom-like EBG structure, and the proposed HIS structure is added around the dual-band antenna. Compared to the reference antenna, the simulated and measured results show that the radiation performance of the antenna is unchanged when the HIS structure is used, and at the same time, at two operating frequencies, the simulated RCS of the antenna with HIS structure is reduced 5.5dB and 6.5dB, respectively.

关 键 词：高阻抗表面(HIS) RCS减缩 同相反射相位带隙 双频微带天线 

分 类 号：TN822[电子电信—信息与通信工程]