Efficient ultrawideband linear polarization conversion metasurface based on Φ-shaped

Abstract

Polarization is a property of transverse waves that specify the geometrical orientation of the oscillations, and it is of significant importance to control the polarization of waves at the information storage and processing. In this paper, we propose a new type of polarization conversion metasurface based on the [Formula: see text]-shaped structure in reflection mode. An ultrawideband cross-polarization conversion is obtained. The simulated results show that this metasurface can rotate the polarized direction of the linearly polarized electromagnetic wave by 90[Formula: see text] and the polarization conversion efficiency reaches up to 90% in the ultrawideband from 6.9 GHz to 22.2 GHz. The relative bandwidth is 105%. In addition, the experimental results of polarization conversion efficiency are in good agreement with the simulations. With the advantages of high conversion efficiency, ultrawide operating band and the simple geometric structure, the application of this polarization conversion metasurface structure can be extended to the frequency range of terahertz or even the visible light.

Cross polarization conversion metasurface for fixed wireless and ku‐band applications

“…Different metasurfaces structures have been extensively studied in the literature review 22–25 . It can be seen from the literature review that a magnetic field going through a subwavelenght structure can ignite an electric as well magnetic polarized waves.…”

“…Different metasurfaces structures have been extensively studied in the literature review. [22][23][24][25] It can be seen from the literature review that a magnetic field going through a subwavelenght structure can ignite an electric as well magnetic polarized waves. An applied EM wave will cause electric and magnetic polarization unless the structure bears some cuts and splits in its geometry.…”

“…Despite of the fact that MSs have a broad range of applications but controlling and manipulation the polarization state of electromagnetic (EM) waves have attracted a great interest of research community. Before the invention of MSs, there were many techniques for polarization control of EM waves, like optical activity of crystals, Faraday Effect but these systems suffer from larger sizes, poor performances and low operational bandwidth 22 . On the other hand MSs are lightweight, have compact sizes and can have tens of GHz operational bandwidths.…”

“…Before the invention of MSs, there were many techniques for polarization control of EM waves, like optical activity of crystals, Faraday Effect but these systems suffer from larger sizes, poor performances and low operational bandwidth. 22 On the other hand MSs are lightweight, have compact sizes and can have tens of GHz operational bandwidths. However, attaining large bandwidth and thinner surfaces are still the main issues needs to be addressed.…”

Ultrathin and high efficient wideband polarization converting metasurface

“…MS based cross polarization conversion surfaces have been designed and studied from microwave frequency band to optical band 12 . MS have been designed in different structures and dimensions to achieve cross polarization conversion over different frequency bands of the electromagnetic spectrum, such as a pi‐shaped MS which works as cross polarizer in the frequency band of 6 to 24 GHz is reported in Reference 13; however, this MS is thicker and has no angular stability A MS having cross polarization conversion characteristic is presented in Reference 14, operating in the microwave spectrum, however the simulated results of the designed MS are not experimentally verified. An ultra‐wideband polarization conversion MS, which can rotate polarization of the EM wave from 7.1 to 23.1 GHz is proposed in Reference 15, but the designed surface does not possess angularly stable response.…”