Abstract
•This study presents a thin triple-band cross-polarization-conversion metasurface (CPCM) comprising square split-ring resonators (SSRR), metallic cross elements .•The SSRR and metallic cross elements are developed on a dielectric substrate and the backside is blocked by copper.•Triple band cross-polarization conversion metasurface (CPCM) is designed to work under normal and oblique incidents.•An electrically thin substrate makes the proposed structure identical in polarization responses (up to 750) at normal and oblique incidents above the mentioned frequency band.•The proposed structure has achieved a bandwidth of 5.35 to 5.69 GHz, 7.60 to 8.76 GHz, and 12.41 to 13.96 GHz covering the S, C, and X frequencies band, respectively.
This study presents a thin triple-band cross-polarization-conversion metasurface (CPCM) comprising square split-ring resonators (SSRR), metallic cross elements where four metal strips are housed inside the SSRR. The SSRR resonator and back-layer are designed with copper on FR-4 substrate, where substrate sandwiches the resonator and the back-layer. The SSRR and metallic cross elements are developed on a dielectric substrate and the backside block by a copper layer. CST MWS 2018 is used to design and perform analysis of the metasurface. The electrical dimension of the CPCM structure is 0.128 λ × 0.128 λ × 0.044 λ at a lower frequency of 5.49 GHz. The CPCM achieved a bandwidth of 5.35 to 5.69 GHz, 7.60 to 8.76 GHz, and 12.41 to 13.96 GHz covering the S, C, and X frequencies band. Moreover, the simulated result of the CPCM is verified through experimental development. An electrically thin substrate makes the proposed structure identical in polarization responses (up to 750) at normal and oblique incidents above the mentioned frequency band. The surface current distribution is analyzed to comprehend the structural mechanism behind the polarization conversion of the unit cell.