宽带
物理
圆极化
光学
极化(电化学)
线极化
带宽(计算)
反射(计算机编程)
轴比
电磁辐射
微带线
工程类
电信
计算机科学
化学
激光器
物理化学
程序设计语言
作者
Abdul Majeed,Jinling Zhang,Muhammad Aqueel Ashraf,Saifullah Memon,Khalid Hussain Mohammadani,Muhammad Ishfaq,Mun Sun
出处
期刊:Electronics
[MDPI AG]
日期:2022-05-25
卷期号:11 (11): 1681-1681
被引量:12
标识
DOI:10.3390/electronics11111681
摘要
In this paper, we present an ultrawideband reflective metasurface with the properties of an LTC-PC, which is an orthotropic composition with two mutually orthogonal symmetric axes, v and u, and 45° rotation about the vertical y-axis. Based on the metasurface unit cell, it seems like a circular pie embedded with a rectangular patch. The converter can convert LP electromagnetic (EM) waves to CP waves over the bands from 20.18 GHz to 33.93 GHz, with a 3-dB AR bandwidth of up to 50.8% and a circular polarization wave that is RHCP (right hand CP). Moreover, the linear-to-circular PCR exceeds 98% in the frequency bands of 20–34 GHz. A comprehensive theoretical investigation was conducted to determine the fundamental cause of the LTC polarization conversion. The ∆φuv between two reflection coefficients at v- and u-polarized incidences is ±90°, which fully anticipates the axial ratio of the reflected wave. Any reflective metasurface can be used as an efficient LTC-PC if the ∆φuv is close to ±90°.
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