一种新型超小型化天线  

A Novel Subminiature Antenna

作　　者：邓曦[1] 刘运林[1] 史志玮[1] 陈锋[1] 

机构地区：[1]西南交通大学电磁场与微波技术研究所,四川成都610031

出　　处：《通信技术》2010年第7期77-79,共3页Communications Technology

摘　　要：许多移动通信场合都需要体积小,重量轻的小型接收和发射天线。微带贴片天线以其抛面低,重量轻等优点而成为天线设计者的首选。然而,为了获得较大的带宽,通常必须增大天线的体积。提出了一种新型的超小型化天线,在天线模型的适当位置处加入短路探针,在保持天线大小不变的情况下,大幅度降低了超小型化天线的驻波比。另外,为了提高天线的增益,在接地板上开L型槽,使天线的增益增大了5.6倍。通过数值模拟所得实验结果发现,天线的带宽从没有短路探针时的0MHz增大到9MHz。The miniaturized receiving and emission antenna in small size and light weight are required in many mobile telecommunication applications.The microstrip antenna,for its low paraboloid and light weight,is the first-of-all choice for antenna designers.However,in order to obtain a wider bandwidth,the antenna is usually enlarged.In this paper,a novel model of subminiature antenna is proposed,in which a short-circuit pin is properly inserted.Thus greatly reducing the Voltage Standing Wave Ratio（VSWR） of the antenna while maintaining the size of the antenna.The numerical simulation results indicate that the bandwidth of the antenna increases from 0MHz without the shorting-circuit pin to 8MHz with the shorting-circuit pin at proper location.

关 键 词：短路针 L槽 超小型化 方向图 增益 

分 类 号：TN820.1[电子电信—信息与通信工程]