L双频与GPS集成天线设计

摘要

论文设计了一种将L频段通信用双频天线与GPS天线集成的小型化天线.通过在单频工作L天线辐射贴片下插入耦合贴片的方式实现了L天线双频工作,通过恰当地选介质板材料与天线结构参数,使得L天线在双频段具有优良的阻抗特性.将GPS天线的辐射贴片作为L天线的反射地板,降低了天线剖面.设计了天线馈电网络,保证了L天线与GPS天线具有良好的圆极化性能.%An compact integrated antenna is presented in this paper.The antenna contains a dual-band L antenna and a GPS antenna.By inserting a coupled patch to the original L antenna which works in single band, a dual-band L antenna is obtained.This dual-band L antenna has good impedance performance if materials and structure are selected carefully.The radiation patch of GPS antenna is used as the ground of L antenna, thus the height of integrated antenna is reduced.In addition, feed-in network is designed for this antenna to guarantee good circular-polarization performance of it.