紧凑型全介质宽带宽入射角线-圆极化转换器  

Compact all-dielectric wideband wide incidence angle line-circular polarization converter

作　　者：秦锴 闫中慧 余孝胜 文品 QIN Kai;YAN Zhonghui;YU Xiaosheng;WEN Pin(School of Information Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学信息工程学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2024年第2期156-161,共6页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省自然科学基金面上资助项目(20224BAB202009)。

摘　　要：提出了一种基于全介质的宽带宽入射角线-圆极化转换器,其由x和y方向的两块介质材料垂直组合而成。通过对两块介质材料分别进行弯折设计,有效减小了圆极化器的横向和纵向高度,使得圆极化器的结构更加紧凑,同时相互垂直结构也可以提高入射角稳定性。为验证所提方法和结构的可行性,设计了一款工作频段为2.00~3.30 GHz的线极化到圆极化的转换器,其3 dB轴比相对带宽为52.0%,且在0°~55°入射角度范围内仍具有较宽的3 dB轴比带宽和极化纯度。A wideband wide incidence angle line-circular polarization converter was proposed based on an all-dielectric design in this study.It was formed by the vertical combination of two pieces of dielectric material in the x and y directions.By individually bending the two blocks of dielectric materials,the lateral and longitudinal dimensions of the circular polarizer were effectively reduced,making the proposed structure more compact.Simultaneously,the perpendicular configuration enhanced the stability of the incident angles.To validate the feasibility of the proposed method and structure,a linear-to-circular polarization converter operating in the frequency range of 2.00 to 3.30 GHz was designed with achieving a 52.0%3 dB axial ratio bandwidth.Moreover,within the range of incident angles from 0°to 55°,it maintained a wide 3 dB axial ratio bandwidth and polarization purity.

关 键 词：紧凑型 全介质 宽带 宽入射角 圆极化器 

分 类 号：TN82[电子电信—信息与通信工程]