关键词: 喇叭天线, 介质加载, 卫星通信

Abstract:

Traditional land satellite communication system mostly use parabolic antenna,which is bulky and inflexible.The horn antenna can overcome the shortcomings mentioned above,but with smaller gain and greater loss.This article designs a new type of dielectric loaded rectangular horn antenna which has a two-layer structure,the upper being radiation structure and the lower micro-strip slot coupled feed structure.The radiation structure is a rectangular copper whose center is a rectangular horn hole.This antenna is moderate in size,easy to activities,and has an obvious improvement over the traditional ones in the gain,the reflection coefficient and the half-power lobe width.

Key words: horn antennas;dielectric loaded;satellite communications