Ultra-Broadband Angular-Stable Reflective Linear to Cross Polarization Converter

Abstract

An ultra-broadband angular-stable reflective linear to cross polarization converter based on metasurface is developed. The unit cell of the converter is formed by a slant end-loaded H-shaped resonator. The slant arrangement is to create polarization conversion. The end-loaded stubs are useful for miniaturization and the slots are responsible for enlarging bandwidth. The simulated results show that the polarization conversion ratio of the proposed design is better than 90% in the range of 9.83–29.37 GHz, corresponding to a relative bandwidth of 99.69%. It is also demonstrated that the mean polarization conversion ratio is larger than 80% even though the incident angle reaches 40° for both x-polarized and y-polarized incidences. To validate the design, a prototype of the proposed structure is fabricated and measured. Satisfactory agreement has been observed between measurement and simulation. Compared with the designs in the literature, the developed converter exhibits good performance of high efficiency, ultra-broadband and angular stability. Potential applications can be expected in polarization-controlled devices, stealth surfaces, antennas, etc.

A Low Profile Wideband Linear to Circular Polarization Converter Metasurface with Wide Axial Ratio and High Ellipticity

“…The proposed converter's LTC polarization conversion efficiency is determined using the Stokes parameters [26].…”

“…The authors introduce a single-layer metasurface reflector for microwave linear-to-linear cross-polarization conversion featuring a unit cell with a triple-arrow resonant structure [16]. Researchers have also introduced several ideas to fabricate transmission-type [17][18][19][20][21] and reflection-type LTC polarization converters [22][23][24][25][26]. Plasmon resonators that work in multi-order to perform the polarization of waves are reported in the literature [27][28][29][30][31].…”

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

“…A range of polarization conversions are required in these applications. On the basis of MS technology, different types of polarization converters have been intensively studied to realize diverse functionalities, including linear to linear [18], linear to circular [19], circular to circular [8,9], and multifunctional polarization conversion [20,21]. Especially in regard to linear to circular polarization conversion, they have attracted considerable attention for sensor and satellite communication systems.…”

Special Issue “Metamaterials and Metasurfaces”

“…Zhang et al [4] present the development of an ultra-broadband and angular-stable reflective linear into a cross-polarization converter utilizing a metasurface. The converter's unit cell is constructed using a slant end-loaded H-shaped resonator.…”