双L型背腔式圆极化缝隙天线的设计  

Design of a Cavity-Backed Double-L Circular Polarized Slot Antenna

作　　者：任王[1] 

机构地区：[1]浙江工商大学信息与电子工程学院,杭州310018

出　　处：《微波学报》2008年第6期56-59,共4页Journal of Microwaves

摘　　要：针对新型室内嵌入式天线的应用前景,提出了一种新颖的双L型背腔式圆极化缝隙天线。该天线底面由两个对称的L型缝隙组成,顶层由微带馈线网络馈电。天线底部放置一个金属腔体,既适合嵌入式安装,便于与室内其他接口集成,同时减少了墙体对天线的影响,增强了天线的正向辐射。给出了天线的阻抗带宽、辐射方向图、增益以及圆极化率的仿真结果,并对天线的阻抗带宽进行了测量。结果表明,该天线针对900MHz频段的室内嵌入式应用有良好的性能。According to the increasing requirements of the embedded antenna using indoor, we propose a novel double-L cavity-backed circular polarized slot antenna. The proposed antenna is composed of two symmetric L-style slots and is fed by a microstrip network. A metal cavity is placed at the bottom of the antenna to reduce the effect caused by the wall and enhance the front directivity of the proposed antenna. The antenna was also simulated, fabricated and tested. The measured results agree well with the simulated data. It is shown that the proposed antenna has a good performance at 900MHz for embedded using indoor.

关 键 词：背腔式 缝隙天线 圆极化 室内无线通信 

分 类 号：TN823[电子电信—信息与通信工程]