摘要
采用电磁仿真计算软件HFSS设计并仿真了一种工作于C波段宽带圆极化微带贴片天线。天线采用双馈点对圆形微带贴片进行馈电,实现圆极化;选用两层聚四氟乙烯玻璃纤维板作为介质,通过底层馈电网络由探针穿过中间地板层对上层圆形贴片进行馈电,在探针周围用环形槽将探针与地板进行隔离,并增加了天线的谐振点,从而进一步扩展了天线频带。结果表明天线的相对带宽约为30%,并且E面、H面3 dB轴比角度均大于90°。
A broadband circularly polarized microstrip parch antenna working at C band was designed and simulated by HFSS software. The antenna used doubly-fed points to realize circular polarization, selected two-layer PTFE glass fiber board as medium, adopted the ground plane to isolate the feed network and the radiation patch for reducing the influence of feed network on the properties of antenna circular polarization. The experimental results show that the relative bandwidth of the antenna is about 30%, and the 3 dB axial ratio angles of E-plane and H-plane are more than 90 degree.
出处
《现代电子技术》
2011年第17期95-97,共3页
Modern Electronics Technique
关键词
宽频带
圆形贴片天线
圆极化
带宽
broadband
circular patch antenna
circular polarization
band width
