双频圆极化器  

Dual-Band Circular Polarizer

作　　者：黄楷焱 李阳 李翔宇 姚夏元 HUANG Kaiyan;LI Yang;LI Xiangyu;YAO Xiayuan(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《人工晶体学报》2024年第6期1008-1015,共8页Journal of Synthetic Crystals

摘　　要：本文提出了一种新型的双频圆极化器,可以在22.1~24.2和30.1~33.2 GHz将入射电磁波分别转化为左旋圆极化波和右旋圆极化波。这两个通道正好覆盖了大气遥感中(23.8±0.2)和(31.4±0.1)GHz的两个观测通道,且此圆极化器在遥感观测通道内的插入损耗小于1 dB,轴比优于1.26,完全满足现有大气遥感在(23.8±0.2)和(31.4±0.1)GHz两个通带中的探测要求。该圆极化器使用了电路谐振的理论构建通带,以等效电路的方式进行初步分析,使用电磁仿真软件进行优化,最终完成了设计。In this paper,a novel dual-band circular polarization was proposed,which converts the incident linear polarization electromagnetic waves into left-handed and right-handed circularly polarized waves at 22.1~24.2 and 30.1~33.2 GHz,respectively.These two channels precisely cover the two observation channels of(23.8±0.2)and(31.4±0.1)GHz in atmospheric remote sensing.The insertion loss in the remote sensing observation channel is less than 1 dB,and the axial ratio is better than 1.26.It fully meets the detection requirements of the existing atmospheric remote sensing in two observation channels of(23.8±0.2)and(31.4±0.1)GHz.For designing this circular polarizer,the circuit resonance theory was used to construct the passband,and preliminary analysis was conducted through equivalent circuits.It is optimized by the electromagnetic simulation software to complete the design.

关 键 词：圆极化器 双频 等效电路 谐振理论 插入损耗 

分 类 号：TN713[电子电信—电路与系统]