上海航天（中英文）2024，Vol.41Issue(3)：187-194,8.DOI:10.19328/j.cnki.2096-8655.2024.03.020
一种基于天线-移相器-天线单元结构的双宽带线圆极化器
Dual-broadband Linear-to-circular Polarizer Based on Antenna-filter-Antenna Unit Cell Structure
摘要
Abstract
Linear-to-circular polarizers can play an important role in the antenna systems for satellite communications.In view of the requirements of K/Ka-band satellite communications,in this paper,a dual-broadband linear-to-circular polarizer is proposed,in which the antenna-filter-antenna(AFA)structure is adopted and the dual-band receiving and transmitting antennas are independent.In particular,the working bandwidth can be expanded by stacking the patches,resulting in a unit cell size of 0.4λK×0.37λK×0.27λK.With the polarizer,an incident x-polarized wave can be converted into a right-hand circular-polarized(RHCP)wave at the K-band,whereas an incident y-polarized wave can be converted into a left-hand circular-polarized(LHCP)wave at the Ka-band.A polarizer prototype is fabricated and tested.The measured results indicate that the operating bandwidth of the polarizer is 9.8%(18.3～20.2 GHz)and 7.8%(28.5～30.82 GHz)within the incidence angle ranging from 0° to 25°.关键词
卫星通信/极化器/双频/天线-移相器-天线(AFA)/宽带Key words
satellite communication/polarizer/dual-band/antenna-filter-antenna(AFA)/broadband分类
信息技术与安全科学引用本文复制引用
陆艺文,童宣锋,曾维民,薛晓马,安睿,蒋之浩..一种基于天线-移相器-天线单元结构的双宽带线圆极化器[J].上海航天（中英文）,2024,41(3):187-194,8.基金项目
国家自然科学基金(62122019) （62122019）
