共面波导馈电蝶形缝隙天线双频特性的研究

Dual-Frequency of the CPW Fed Bow-tie Slot Microstrip Antenna

研究共面波导馈电的蝶形缝隙天线的双频特性进行分析。并用ADS(Advanced Design System)进行分析。结果表明蝶形缝隙天线会出现双频谐振现象,通过改变蝶形的参数(L、W)可以实现对谐振频率的调整,并改善天线的带宽(两个频率带宽可以分别达到32%、19%)。最后设计一款可用于无线局域网的蝶形缝隙双频天线,其中心频率分别为2.5GHz和5.2GHz,带宽在VSWR=2时能完全覆盖ISM双波段,且具有全向的方向图。

Research the characteristic dual-Frequency of the CPW fed bow-tie microstripantenna with the ADS(Advanced Design System).The parameter of the Bow-tie(L、W) can adjust the resonance frequency. The new design exhibits 32%、19% bandwidth with two resonance frequencies(2.5GHz and 5.2GHz) for the WLAN. The bandwidth VSWR=2 of each frequency suit the ISM, and with Omnidirectional antenna pattern.