Ka频段双极化低剖面卫通相控阵天线  

Ka-band dual-polarization low profile phased array antennafor satellite communication

作　　者：刘敦歌 金世超[1,2] 崔喆 刘立朋 黄俊[1,2] 梅辰钰 杨钰茜 费春娇 周波 袁野 龚志红[3] LIU Dunge;JIN Shichao;CUI Zhe;LIU Lipeng;HUANG Jun;MEI Chenyu;YANG Yuqian;FEI Chunjiao;ZHOU Bo;YUAN Ye;GONG Zhihong(Space Star Technology Co.,Ltd.,Beijing 100094,China;State Key Laboratory of Space-Ground Integrated Information Technology,Beijing 100094,China;Unit 93160 of PLA,Beijing 100071,China)

机构地区：[1]航天恒星科技有限公司,北京100094 [2]天地一体化信息技术国家重点实验室,北京100094 [3]中国人民解放军93160部队,北京100071

出　　处：《空间电子技术》2022年第6期42-47,共6页Space Electronic Technology

基　　金：科技部国家重点研发项目(2020YFB1806200,2020YFB1806201)。

摘　　要：当前国内外低轨通信互联网星座发展迅猛,面向卫通天线跨星跨波束快速切换、低剖面应用需求,提出了一种Ka频段层叠式缝隙耦合双圆极化发射相控阵天线。基于多层PCB叠层瓦式架构,将天线层、电源与控制层、功分网络层和芯片层一体化集成。基于“双线极化天线+移相控制”设计实现左右旋圆极化及其极化切换,采用子阵相位旋转排布实现天线整阵二次圆极化。测试结果表明:天线工作频段为27.5~31 GHz,29.2 GHz处法向等效各向同性辐射功率值为16.5 dBW,可实现±60°扫描,法向轴比<2 dB,左右旋圆极化可切换,天线子阵厚度3 mm。相比传统砖式相控阵天线,大幅降低了剖面和重量,对卫通天线低剖面、波束快速切换等具有重要应用意义。With the rapid development of LEO broadband communication satellite constellations,a Ka-band slot coupled dual-polarization transmit phased array antenna is proposed to meet the requirements of fast cross-beam switching and low profile for satellite communication.The antenna layer,power supply and control layer,power distribution network layer and chip layer are integrated together.The dual-linearly polarized antenna and phase shifter are adopted to achieve circular polarization switching and polarization switching.The sub-array rotation arrangement is also used to realize the second circular polarization.The integrated,low-profile phased array is fabricated and tested.The results indicate that the phased array is operated at 27.5~31 GHz,achieving±60°scanning,circular polarization switching,and EIRP 16.5 dBW@29.2 GHz.The thickness of phased array is about 3 mm.Compared with the traditional brick phased array antenna,the profile and weight are greatly reduced,which is of great significance to the general utilization of phased array antennas for satellite communication.

关 键 词：相控阵天线 KA频段 双圆极化 等效各向同性辐射功率 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TN82[电子电信—信息与通信工程]