Ku波段小型DBS径向线缝隙天线的分析

An Analysis Of The Radial Line Slot Antenna For Direct Broadcasting From A Satellite (DBS) Of Ku Band

径向线缝隙天线（简称ＲＬＳＡ）是Ｋｕ波段卫星直播电视（ＤＢＳ）地面接收天线，ＲＬＳＡ天线的高增益、高效率、小口径、厚度薄的平板型紧凑式结构，代表了ＤＢＳ地面接收天线的发展趋势。本文论述了ＲＬＳＡ天线的结构特点，技术进展，并对口面场分布进行了分析。

A radial line slot antenna (RLSA) is a slotted waveguide planar array for direct broadcasting from a satellite (DBS) subscriber antennas of Ku band with high gain,high efficiency,small size,and structural simplicity,which is the development trend of antenna used for DBS.The article discusses the structural characteristis and the technique development of RLSA,and we have an analysis for distribution of electromagnetic wave.