Simple design of efficient broadband multifunctional polarization converter for X-band applications

Abstract

A simple design of a broadband multifunctional polarization converter using an anisotropic metasurface for X-band application is proposed. The proposed polarization converter consists of a periodic array of the two-corner-cut square patch resonators based on the FR-4 substrate that achieves both cross-polarization and linear-to-circular polarization conversions. The simulated results show that the polarization converter displays the linear cross-polarization conversion in the frequency range from 8 to 12 GHz with the polarization conversion efficiency above 90%. The efficiency is kept higher than 80% with wide incident angle up to 45°. Moreover, the proposed design achieves the linear-to-circular polarization conversion at two frequency bands of 7.42–7.6 GHz and 13–13.56 GHz. A prototype of the proposed polarization converter is fabricated and measured, showing a good agreement between the measured and simulated results. The proposed polarization converter exhibits excellent performances such as simple structure, multifunctional property, and large cost-efficient bandwidth and wide incident angle insensitivity in the linear cross polarization conversion, which can be useful for X-band applications. Furthermore, this structure can be extended to design broadband polarization converters in other frequency bands.

Ultra-Wideband and Lightweight Electromagnetic Polarization Converter Based on Multiresonant Metasurface

“…The measurements are taken in the frequency range from 1 to 10 GHz. The detailed description of the measurement setup can be found in [35]. Fig.…”

A compact single‐layer reflective metasurface for high‐efficiency polarisation conversion applications in C and X bands

“…To meet these goals, efforts have been made to integrate both CPC and LTCP properties into a single-design assembly [35][36][37][38][39][40]. Pouyanfar et al introduced a PC incorporating the CPC and LTCP modes.…”

“…Various attempts have also been made to improve both BW and efficiency. Designs such as the fish-like structure and a cornercut square patch showed slight improvements in BW, but they still had large unit-cell sizes, and the efficiency of LTCP remained unexplored [37,38]. In contrast, a design utilising two meander lines and a cut wire increased the BW for both CPC and LTCP [41], but it suffered from a drop in CPC efficiency below 90%, and the size and thickness increased significantly.…”

Dual-Band Wide-Angle Reflective Circular Polarization Converter with Orthogonal Polarization Modes

“…Based on this, many different types of MSs have been proposed, such as coding metasurface [8,9], gradient metasurface [10], and polarization conversion metasurface (PCM) [11]. In particular, polarization converters, based on PCM, have strong design capabilities and functional customization, which can realize different functions for different unit structures, materials and layouts, so it provides a feasible solution to manipulating polarization states in an effective and convenient way [12,13].…”