Multifunctional Single Layer Metasurface Based on Hexagonal Split Ring Resonator

• Published in: IEEE access Vol. 8; pp. 28054 - 28063
• Main Authors: Salman, Muhammad Salman, Khan, M. Ismail, Tahir, Farooq A., Rmili, Hatem
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: angular stability; Bandwidth; Broadband; Circular polarization; CPC; Frequencies; Frequency conversion; Metasurface; Metasurfaces; PCR; Polarization; polarization conversion; Resonant frequency; Resonators; Stability criteria; Unit cell
• ISSN: 2169-3536; 2169-3536
• DOI: 10.1109/ACCESS.2020.2971557

We present a single-layer metasurface, which performs both cross and circular polarization conversion at multiple frequency bands. The unit cell of the proposed metasurface consists of periodic array of a uniquely designed hexagonal split ring resonator (SRR). The proposed metasurface behaves as an efficient 90° polarization rotator at dual frequency bands of 6.36-6.59 GHz and 10.54-13.56 GHz. The polarization conversion efficiency approaches 90% within these two operating bands. Moreover, linear-to-circular polarization conversion is also achieved in other three wide frequency bands from 6.10-6.20 GHz, 6.84-9.02 GHz and 14.10-15.48 GHz. The novel features of the subject hexagonal metasurface, which qualify it for numerous practical applications are high cross-polarization conversion (CPC) efficiency, wideband operation and angular stability for oblique incidence up to 45°.