基于耦合加载的低剖面天线设计

基于耦合加载的低剖面天线设计

内容简介：设计了一种小型化双频天线.通过在单极子天线上引入寄生耦合的方法,即在单极子顶部引入耦合加载板,既保证了单极子天线的辐射全向性又减小了电小天线的分布电容,从而使该天线具有宽频带、低剖面特性.采用仿真软件Ansoft HFSS进行仿真和优化,优化结果表明:该天线工作频率为824~960 MHz/1710~2690 MHz(驻波比小于等于2).根据仿真模型制作了一款天线,实测驻波带宽可达811~1050 MHz/1580~2660 MHz,且在水平面内辐射全向方向图.该天线在限制尺寸的情况下有效地展宽了带宽.

Abstract：@@@@A miniaturized dual-band antenna is proposed. By adding coupling-load electric board,the antenna can achieve broad bandwidth with a low profile.Ansoft HFSS is used to simulate and design a low-profile anten-na based on coupling-load which VSWR is less than 2 in the 824~960 MHz and 1710~2 690 MHz. Finally, an antenna is fabricated based on the simulation model. The measured VSWR is less than 2 in 811~1 050 MHz and 1 580~2 660 MHz,and the horizontal radiation pattern is omnidirectional. The antenna has a broad band-width with a restricted size.

作者：宋阳**, 薛锋章,

关键词：无线光纤分布系统, 单极子, 低剖面天线, 耦合加载,