一种可展宽频带的微带贴片天线  

Design of a wideband microstrip patch antenna

作　　者：孙思扬[1] 林欣[1] 高攸纲[1] 吕英华[1] 

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《电波科学学报》2009年第2期307-310,共4页Chinese Journal of Radio Science

基　　金：国家高科技发展计划资助项目(2007AA01Z281);博士点基金(200700130046)

摘　　要：提出了一种可展宽频带的微带贴片天线。通过对普通矩形微带贴片天线进行切角而展宽频带。由贴片天线的谐振频率和该贴片上的电流分布出发,研究了产生宽带特性的机理。采用基于有限元算法的高频电磁场仿真软件ANSOFTHFSS对该天线的电特性进行计算,结果表明:该天线的阻抗带宽(S11<-10dB)达到16%(370MHz)。证明了该方法的有效性。This paper presents a single-patch wide-band microstrip patch antenna. The bandwidth is expanded by cutting down a square at the corner of the ordinary rectangular patch antenna. The wide-band mechanism is explored by investigating the relationship between the resonant frequency and the surface current distribution on the patch. The electrical property of the antenna is computed using commercially available Finite Element software, High Frequency Structure Simulator（HFSS）, of Ansoft. It can be seen from the simulation results that the antenna proposed in this paper has an impedance bandwidth（ S11〈- 10 dB） of 16%（370 MHz）. The validity of this design is demonstrated.

关 键 词：微带贴片天线 展宽频带 切角 表面电流 电流路径 

分 类 号：TN82[电子电信—信息与通信工程]