展宽贴片天线频带的L型馈电方法的设计与分析

Design and Analysis of Bandwidthenhancement Technique of Lprobefed Patch Antenna

微带天线其本身具有的固有带宽十分狭窄,很难应用于更多更广的领域中,所以对微带天线带宽展宽的研究具有十分重要的意义。采用Ansoft公司的HFSS仿真软件仿真分析了L型探针馈电方法的微带贴片天线,并且设计了一个中心频率为1 000 MHz的L形探针馈电方法的微带贴片天线,其绝对带宽为320 MHz,达到了中心频率的32%,辐射增益大约为9 dB。其具有尺寸小,结构简单,超宽带的特征。

Microstrip antennas have inherent extremely narrow band- width, it is very difficult to be applied in more domains. Thus the wide band -width research of mierostrip antennas is of great significance to the application. In this paper, by using Ansoft Companyts simulation software HFSS, the simulation and analysis of L- probe- fed mierostrip patch antenna are shown,and a 1 000 MHz center frequency L- probe- fed microstrip patch antenna is designed. Its absolute bandwidth is 320 MHz, reaching 32% bandwidth of that at the center frequency. The radiation gain is about 9 dB,it is characterized by its small size,simplified structure and ultra- wide band.