一种新颖的超宽带楔形微带准喇叭天线设计  

Design of a novel ultra-wideband microstrip quasi-horn antenna using wedge-shaped dielectric substrate

作　　者：李育红[1] 杨程[1] 周正[1] 

机构地区：[1]北京邮电大学无线网络实验室

出　　处：《电路与系统学报》2007年第1期143-146,50,共5页Journal of Circuits and Systems

基　　金：国家863计划项目(2003AA123240);国家自然科学基金项目(60372097);教育部科学技术研究重点项目(03035)

摘　　要：近年来,超宽带(UWB)无线通信技术的发展日益引起人们的关注和兴趣,超宽带天线设计是一个具有挑战性的课题。本文提出一种新颖的超宽带楔形微带准喇叭天线设计,通过合理设计辐射贴片和介质基板的尺寸及形状,有效地展宽了天线带宽。仿真结果显示其VSWR<2的频带范围较大,而且随着频率的增加,天线的增益有增大的趋势。此外,这种天线成本较低廉,比较容易制作。The developments of ultra-wideband（UWB） radio communication technology have received growing attention and interest in recent years. The design of ultra-wideband antenna is a challenging task. This paper proposes a novel ultra-wideband microstrip quasi-horn antenna using stepped dielectric substrate, with proper size and shape of the radiating patch and the dielectric substrate, the bandwidth is broaden greatly. Simulation results show that the frequency range obtained for VSWR〈2 is much wider, and as the frequency increases, the antenna gain become bigger. In addition, the novel antenna is low cost and easy to be fabricated.

关 键 词：超宽带(UWB) 微带天线 辐射方向图 驻波比 

分 类 号：TN822[电子电信—信息与通信工程]