新一代潜用UHF频段卫星通信天线研究

Research on a new submarine antenna used in UHF satellite communication system

随着卫星通信体制的不断革新,现役潜艇上使用的UHF频段卫星通信频段与速率都有大幅度的提升。为了能够适应新体制下的通信要求,本文针对新一代潜用UHF频段卫星通信天线展开设计研究。采用变宽度辐射臂与寄生辐射臂相结合的方式,调节天线的阻抗、扩展天线的工作频段,使天线的电压驻波比在整个UHF频段卫星通信频段内均满足通信要求。通过电磁仿真分析天线的辐射方向图,确定天线在海洋环境下随艇摇摆时依旧能够满足使用要求。同时还针对该天线设计了一款一体化宽带功分移相馈电网络,进一步提高了天线的集成度。最后根据设计结果加工制作了天线实物并进行了测试,测试结果与仿真结果一致,满足各项指标要求。

With the innovation of the satellite communication,the antenna for submarion in ultra high frequency(UHF)has been improved in speed and the band of frequency.In order to meet the needs of use,a new submarine antenna used in UHF satellite communication system is presented in this paper.The research uesed the combination of width-variable radiation arm and parasitic radiation arm to adjust the impedance and wide the frequency band to make the voltage standing wave ratio satisfy the need of communication in UHF.By electromagnetic simulation of the radiation pattern,the antenna is confirmed that it can satisfy the requirement when the submarine is swaying with the wave.At the same time,this paper also designed a integration broadband power splite phase shift work to improve the integration level of the antenna.At last,a practicality has been made and tested and the results meet every target.