波导馈电的圆极化天线阵在卫星通信中的应用  

Application of Circularly Polarization Antenna Array Feed with Waveguide in Satellite Communication

作　　者：范振东 从益凤 何柳 胡坚 钟兴建 FAN Zhen-dong;CONG Yi-feng;HE Liu;HU Jian;ZHONG Xing-jian(Unit 31121 of PLA,Nanjing Jiangsu 210014,China;Unit 31107 of PLA,Nanjing Jiangsu 210004,China;College of Communications Engineering,Army Engineering University of PLA,Nanjing Jiangsu 210007,China)

机构地区：[1]31121部队,江苏南京210014 [2]31107部队,江苏南京210004 [3]陆军工程大学通信工程学院,江苏南京210007

出　　处：《通信技术》2019年第12期3070-3074,共5页Communications Technology

基　　金：国家自然科学基金资助项目（No.61271105)~~

摘　　要：近年来,卫星通信被越来越多的应用于各类领域,作为卫星通信系统中的一个重要组成部分,对于天线性能的要求也越来越高。由于电磁干扰的影响,线极化天线经常会产生极化方向偏转,或因雨滴干扰等因素而出现误码,因此在卫星通信系统中一般采用圆极化天线。提出了一种由波导馈电的ku波段圆极化微带天线阵。微带天线因具有低剖面、较小的体积、和较轻的重量等优点而经常被用作辐射单元;与微带馈电网络相比,波导馈电网络具有更低的传输损耗。本文将波导馈电网络与圆极化微带天线结合,并提出在波导上开槽的方法,引导信号从波导传输到微带线,从而激励四个微带天线形成圆极化辐射。仿真结果表明,所设计的天线具有良好的性能。In recent years,satellite communication has been more and more applied in various fields.As an important part of satellite communication systems,the requirements of antenna performance are getting higher and higher.Due to the influence of electromagnetic interference,linearly polarized antennas often produce polarization deflection,or bit errors due to raindrop interference and other factors.Therefore,circularly polarized antennas are generally used in satellite communication systems.A ku-band circularly polarized microstrip antenna array fed by a waveguide is proposed.Microstrip antenna is usually used as radiation unit for its low profile,compact size and low weight.Compared with microstrip feed network,waveguide feed network has lower transmission loss.In this paper,the waveguide feed network is combined with the circularly polarized microstrip antenna.A slot is designed in the waveguide and it helps guiding the signal from the waveguide to the microstrip lines which excites 4 microstrip antennas to form circularly polarized radiation.Simulation results indicate that the designed antenna has good performance.

关 键 词：圆极化微带天线 波导馈电网络 KU波段 卫星通信 

分 类 号：TN927[电子电信—通信与信息系统]