摘要
根据喇叭天线的工作原理设计了一种超宽带双脊喇叭天线,这种天线体积小、宽频带和高增益。仿真结果表明,在2～20 GHz的带宽内驻波比小于2.2,且具有一致的方向图。结合仿真分别研究了喇叭天线脊宽、口径大小、馈电处脊的距离、后部腔体对天线驻波比和增益的影响。
An ultra-wideband double-ridged horn antenna with small size,wide bandwidth and high gain was designed according to the principle of horn antenna.The simulation results indicated that the small-size antenna has a voltage standing wave ratio（VSWR） less than 2.2 in the frequency range from 2 GHz to 20 GHz and had consistent patterns.According to the simulation results,the effect of the ridge width,the aperture size,the ridge spacing at feeding point,and the length of rear chamfer on the VSWR and gain of horn antenna were investigated.
