共面带状线馈电三频高增益微带天线

Caplanar Stripline Fed Triple-Band High-Gain Microstrip Antenna

介绍一种工作于2.4,3.5和5.8 GHz的三频微带天线,采用共面带状线(coplanar stripline,CPS)馈电,结构简单且具有较高的增益.采用在菱形环结构中添加小环的方式实现多频工作,并在介质基板底部添加反射板以提高整体增益.为实现实测和满足更多应用需求,设计CPS至微带线的巴伦.实测结果与仿真结果较一致,均达到实际应用的要求,并且各频点增益都在10 dB以上.

A microstrip antenna fed by a coplanar stripline（CPS） working at 2.4,3.5 and 5.8 GHz with a simple structure and a high gain is proposed.Multi-frequency operation is realized by introducing a pair of small hoops in the center of the rhombic structure.The gain is improved by placing a metal reflector beneath the substrate.A CPS to microstrip Balun is designed for measurements and more applications.The measuring results agree well with simulation,which meet the demand of practical applications.Gains of all operating frequencies are higher than 10 dB.