Multi-Band Multi-Functional Metasurface-Based Reflective Polarization Converter for Linear and Circular Polarizations

IEEE Access

Jeet Ghosh¹  Zhengbao Yang²  Xingqi Zhang³  Rahul Dutta⁴ 

[1] Department of Electronics and Communication Engineering, Chaitanya Bharathi Institute of Technology, Hyderabad, India;Department of Mechanical Engineering, City University of Hong Kong, Hong Kong;School of Electrical and Electronic Engineering, University College Dublin, Dublin 4, Ireland;School of Electronics Engineering and Computer Science, Queen Mary University of London, London, U.K.;

关键词: Polarization converter;    multi-functional;    multi-band;    linear polarization;    circular polarization;   

DOI  :  10.1109/ACCESS.2021.3128190

来源: DOAJ

【 摘 要 】

In this paper, we present a simple metasurface based multiband reflective polarization converter for both linear and circular polarizations. We show that, on one hand, the proposed structure can convert the polarization of linearly polarized waves to the orthogonal direction at four frequency bands — 4.3 GHz, 7.2 GHz, 12.3 GHz, and 15.15 GHz. On the other hand, this metasurface can achieve linear to circular or circular to linear polarization conversion at 4 GHz, 4.75–5.95 GHz, 8.35–8.8 GHz and 14.35–14.6 GHz frequency bands. Such multiband operation originates from multiple resonances occurring in the structure based on meandered square ring and diagonal split strip resonator. Moreover, the polarization transforming capability is stable for oblique incident angle up to $15^{o}$ , for both transverse electric (TE) and transverse-magnetic (TM) polarizations. Furthermore, the proposed structure acts as a meta-reflector that maintains the handedness of the circular polarization upon reflection. Finally, a prototype of the proposed meta-structure is fabricated and measured for both normal and oblique incidence of electromagnetic waves. All the results present excellent resonant stability with respect to the different polarization and incident angles. In addition, we have also performed the tolerance analysis of different material parameters to understand the robustness of the structure. Due to the ability of the structure to perform three functionalities through a single layout, the proposed design can pave its way in different microwave applications such as satellite, radar, and 5G communications.

【 授权许可】

Unknown