基于金属环与缝隙环的双极化天线设计

Design of Dual Polarized Antenna Based on Metallic Loop Antenna and Annular-ring Slot Antenna

该文提出了一种由金属环天线和环形环天线构成的低成本双极化天线。金属环形天线是电流辐射器,环形缝隙天线可为磁流辐射器,通过使用互补环形天线来实现双线极化天线。紧凑型天线结构连同简单的同轴探针馈电显着地降低了天线成本。仿真结果表明,该文提出的天线的阻抗带宽为4.61%,天线增益高于6 d B,天线方向图具有宽波束特性。

This paper presents a low cost dual polarized antenna composed of a metallic loop antenna and an annular-ring slot antenna.The metallic loop antenna is a current radiator and the annular-ring slot antenna can be regarded as a magnetic current radiator.A dual linearly polarized antenna is realized by using complementary loop antenna.Compact antenna structure together with simple coaxial probes feeding substantially decrease the antenna cost. Simulated results indicate that the proposed antenna has an impedance bandwidth of 4.61%,higher antenna gain than 6dB and broad beam width.