摘要
为了实现圆极化波到线极化波的高效率转换,提出了一种由两种圆极化波调制模块构成的复合结构单元频率选择表面圆-线极化转换器。采用天线-馈线-天线结构设计了左-左旋和左-右旋两种圆极化调制模,并将二者组合形成具有左旋圆极化波接收、左旋和右旋圆极化波同幅同相辐射功能的圆-线极化转换器。仿真与测试结果表明,该极化转换器能够将入射左旋极化波转换成线极化波,3 dB传输系数相对带宽大于19.8%,工作带宽内的圆-线极化转换率大于0.99。该极化转换器具有插入损耗低、设计原理易于推广等优势。
To convert circularly to linearly polarized wave,a frequency selective surface based circular-to-linear polarization convertor was presented.The configuration was built up with two types of circular polarization conversion modules using antenna-feed-antenna structure.The two types of modules could convert the incident left-handed circularly polarized wave into right-and lefthanded circularly polarized waves respectively,which are combined to form linearly polarized wave.Simulation and experimental results show that the proposed circular-to-linear polarization convertor has 3 dB transmission frequency band of 19.8%and absolute polarization conversion ratio greater than 0.99 in the investigated frequency band.Such polarization convertors have low insertion loss,and the design method can be applied to polarization converters in other frequency bands.
作者
毕杰栋
刘伟
郑淏予
王身云
BI Jiedong;LIU Wei;ZHENG Haoyu;WANG Shenyun(Research Center of Applied Electromagnetics,Nanjing University of Information Science and Technology,Nanjing 210044,China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2020年第4期51-55,共5页
Electronic Components And Materials
基金
国家自然科学基金(61971231)。
关键词
频率选择表面
极化转换器
传输系数
极化转换效率
线极化
圆极化
frequency selective surface
polarization converter
transmission coefficient
polarization conversion efficiency
linear polarization
circular polarization
