应用于无线通信的小型化微带缝隙可重构天线  

The Miniaturized Microstrip Reconfigurable Antenna for Wireless Communication

作　　者：温玉娟[1] 张文梅[1] 

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2011年第2期117-121,共5页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(No.60771052);国家博士后基金特别资助(200801424);山西省高校青年学术带头人专项基金(No.2009021019-1;2010021015-1)

摘　　要：提出了一种新型的小型化频率可重构天线,通过两个开关二极管控制天线的频率,实现频率的重构.天线结构新颖简单,采用宽缝隙天线上加载开关,且开关易于操作控制.当开关闭合时,天线的实测结果谐振频率在5.34 GHz,反射系数为-23.4 dB,相对带宽为70%,实现了超宽带.当开关断开时,天线的实测结果谐振频率为2.4 GHz,反射系数为-12 dB,相对带宽为2.01%.该天线保持了大缝隙天线能够实现宽频带的优势,并且天线的尺寸2.4 GHz能够缩小至50%,实现了小型化.This paper presents a frequency-reconfigurable antenna which is controlled by two PIN diode switches. The structure of antenna is simple and compact. A wide slot antenna is loaded with switches, and the switches are easy to be controlled. When the switches turn on, the measured center frequency is 5.34 GHz, the antenna has a relative bandwidth of over 70 % and the reflection is less than - 20 dB. When the switches turn off, the measured center frequency is 2.4 GHz, it has a relative bandwidth of 2.01% and the re- flection is less than - 12 dB. The antenna maintains the advantages of a large slot antenna achieving broad- band performance, reduces the dimension by 50 % and realizes miniaturization.

关 键 词：小型化 可重构天线 开关二极管 

分 类 号：TN823.24[电子电信—信息与通信工程]