物理
太赫兹辐射
宽带
光学
线极化
极化(电化学)
带宽(计算)
电磁辐射
计算机科学
电信
物理化学
化学
激光器
作者
Xi Gao,Xu Han,Wenda Cao,Hai-Ou Li,Hui Feng,Tie Jun Cui
标识
DOI:10.1109/tap.2015.2434392
摘要
In this paper, a double V-shaped metasurface that can efficiently convert linear polarizations of electromagnetic (EM) waves in wideband is proposed. Based on the electric and magnetic resonant features of a single V-shaped particle, four EM resonances are generated in a V-shaped pair, leading to significant bandwidth expansion of cross-polarized reflections. The simulation results show that the proposed metasurface is able to convert linearly polarized waves into cross-polarized waves in ultrawideband from 12.4 to 27.96 GHz, with an average polarization conversion ratio (PCR) of 90%. The experimental results are in good agreement with the numerical simulations. Compared to published designs, the proposed polarization converter has a simple geometry but an ultrawideband and hence can be used in many applications, such as reflector antennas, imaging systems, remote sensors, and radiometers. The method can also be extended to the terahertz band.
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