Abstract
In this paper, a broadband reflective multi-polarization converter based on single-layer double-L-shaped metasurface is proposed. The proposed metasurface can effectively convert linear-polarized (TE/TM) incident wave into the reflected wave with three different polarizations within the frequency bands of 5.5–22.75 GHz. Based on the electric and magnetic resonant features of the double-L-shaped structure, the proposed metasurface can convert linearly polarized waves into cross-polarized waves at three resonant frequency bands. Furthermore, the incident linearly polarized waves can be effectively converted into left/right handed circular-polarized (LHCP and RHCP) waves at other four non-resonance frequency bands. Thus, the proposed metasurface can be regarded as a seven-band multi-polarization converter. The prototype of the proposed polarization converter is analyzed and measured. Both simulated and measured results show the 3-dB axis ratio bandwidth of circular polarization bands and the high polarization conversion efficiency of cross-polarization bands when the incident wave changes from 0° to 30° at both TE and TM modes.
Highlights
Metasurface (MS), an artificial layer material with the thickness less than wavelength, which can realize flexible and effective regulation for electromagnetic wave phase, polarization mode or propagation mode, has received extensive attention in the past few years [1,2,3]
As given in [23], a microstructured surface is proposed for tuning the polarization state, phase difference of light in two orthogonal directions can be efficiently controlled through the metallic L-shaped structure
Δ uv is close to 90° at the frequency bands of 5.5–6.1 and 12.1–16 GHz, and it is implied that two reflected components at the two equal u- and v-polarized incidences are combined into a right-handed circular-polarized wave in theses two frequency bands, while Δ uv is close to 270° at the frequency bands of 6.65–9.6 and 18.1–22.5 GHz, so that the reflected wave will be left-handed circular-polarized under two equal u- and v-polarized incidences
Summary
Metasurface (MS), an artificial layer material with the thickness less than wavelength, which can realize flexible and effective regulation for electromagnetic wave phase, polarization mode or propagation mode, has received extensive attention in the past few years [1,2,3]. Polarization converter is a kind of polarization control device which can effectively change the polarization state of incident wave. The polarization converters based on these materials generally have narrow operating bandwidth. Due. In this letter, a broadband multi-polarization converter based on single-layer double-L-shaped metasurface is proposed. Comparing with the previous designs [6, 18,19,20,21,22], the proposed single-layer double-L-shaped metasurface has lower profile, more operating frequency bands and wider bandwidth of polarization conversion
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
