一种新型的双频段圆极化可重构微带天线  

A New Design of Dual-Band Circular Polarization Reconfigurable Microstrip Antenna

作　　者：李媛[1] 许文静[1] 李建兰[1] 郭志雷[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《传感技术学报》2010年第4期480-484,共5页Chinese Journal of Sensors and Actuators

基　　金：国家973项目基金资助(2007CB310605)

摘　　要：在移动终端的狭小受限空间内,如何有效地利用频率资源、空间资源,提高通信系统的传输容量是研究热点,设计性能良好的可重构天线是一种有效手段。本文采用多环缝隙结构设计了一种新型的双频段圆极化可重构天线。它在MEMS开关的控制下,可在4.9GHz和5.8GHz两个频率上同时实现左旋和右旋圆极化,两个频带的相对带宽分别达到11.2%和13.8%,很好地实现了圆极化可重构天线的双频带特性,能够满足移动通信对多频技术的需求。In the mobile terminals within a small confined space,how to make full use of frequency resources and space resources,and to improve the transmission capacity of communication systems are key problems. Based on the theoretical analysis of the square ring slot structure antenna,a new polarization reconfiguration antenna is designed. It uses multi-ring slot structure. Left hand circular polarization reconfiguration and right hand circular polarization reconfiguration can be achieved in 4.9 GHz and 5.8 GHz at the same time through the control of MEMS switch,the band-width of the two frequency band is 11.2 % and 13.8 % respectively. It realizes the dual-band character of polarization reconfigurable microstrip antenna,which can meet the needs of mobile communications.

关 键 词：可重构天线 圆极化 方环缝隙结构 宽带与小型化 

分 类 号：TN455[电子电信—微电子学与固体电子学]