Ka频段宽带通信卫星多波束天线技术概述

Summarization of Ka-Band Multi-beam Antenna Techniques for Broadband Communication Satellites

随着宽带多媒体卫星通信的发展,解决各类小型终端的宽带通信需求越来越迫切,这对星载天线提出了高增益、低旁瓣、广覆盖、高C/I等新的要求。文章主要介绍了国外用于宽带多媒体业务的Ka频段多波束天线技术,总结了卫星及其星载多波束天线的关键技术和发展趋势,最后讨论了国内开展Ka宽带通信多波束天线技术研究的意义及发展前景。

With the development of the multimedia communication satellites, it is more and more urgent to solve the broadband communication during various small terminals. It raises new requirements for the space antenna, such as higher gain,lower side lobe,greater coverage, higher C/I etc. This paper introduces the Ka-band muhi-beam antenna techniques for multimedia communication satellites. The key technique and development tendency are presented. Finally, this paper discus- ses the meaning and developing prospect of the study of Ka-band broadband communication antennas.