高阻抗表面的反射特性研究  

Research on Reflection Phase Characterizations of High-Impedance Surface

作　　者：刘亚宁[1] 郭宇[1] 王素玲[1] 

机构地区：[1]河南理工大学电气学院

出　　处：《微型电脑应用》2013年第12期27-30,共4页Microcomputer Applications

摘　　要：利用高阻抗表面作偶极子天线反射基板,分析高阻抗表面的反射特性。与普通金属板使反射波与入射波相位相差180o比较,高阻抗表面能实现一定频带内的同相位反射。根据这一原理,设计低剖面偶极子天线,使天线的工作频率处于电磁带隙的谐振频率上,从而使高阻抗表面反射后的电磁波与天线的辐射波同相叠加,提高天线的辐射效率。利用HFSS仿真TE极化和TM极化下高阻抗表面反射相位随入射角的变化,结果表明:高阻抗表面在两种极化方式下呈现的相位反射不同。A high-impedance surface used as the reflector of dipole antenna is discussed .This paper focuses on the reflection phase feature of high-impedance surface. Compared with ordinary metal reflector which has 1800 phase difference between the reflection wave and the incident wave, high-impedance surface can make the reflection wave and the incident wave realize in-phase reflection within a certain frequency band. According to the principle of in-phase reflection characterizations of high-impedance surface, low profile dipole antenna is designed. The work frequency of the antenna is in the resonance frequency of the electromagnetic band gap, so that the reflection electromagnetic waves from high-impedance surface and tile radiation wave of antenna achieve superposition, which can improve the radiation efficiency of antenna and reduce the antenna system outline greatly. The reflection phase of high-impedance surlhce changes along with the incident Angle under TE polarization and TM polarization. The simulation restllts show that high-impedance surface has different phase reflection under both polarization mode.

关 键 词：高阻抗表面 金属反射板 偶极子天线 相位反射 

分 类 号：TN820[电子电信—信息与通信工程]