文章基本信息

标题：Quasi-Crystal Metasurface for Simultaneous Half- and Quarter-Wave Plate Operation
本地全文：下载
作者：Meraj-E- Mustafa ; Muhammad Amin ; Omar Siddiqui 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2018
卷号：8
期号：1
页码：15743
DOI：10.1038/s41598-018-34142-y
语种：English
出版社：Springer Nature
摘要：We present a quasi-crystal metasurface that can simultaneously work as efficient cross-polarizer and circular polarizer for wide range of frequencies. The quasi-crystal technique benefits from individual resonant response of anisotropic patch and the coupled response due to periodic perturbations in the square lattice. It is shown that quasi-crystals offer broadband response for cross-polarization as well as high efficiency circular-polarization conversion of reflected fields. The quasi-crystal metasurface achieves cross-polarization (above -3 dB) for two broad frequency bands between 10.28-15.50 GHz and 16.21-18.80 GHz. Furthermore, the proposed metasurface can simultaneously work as high efficiency circular-polarizer from 10.15-10.27 GHz and 15.51-16.20 GHz. The metasurface design is also optimized to suppress co-polarization below -10 dB between 10.5-15.5 GHz. This metasurface can find potential applications in reflector antennas, imaging microscopy, remote sensing, and control of radar cross-section etc.