Abstract
A dual-layer circular polarizer based on FSS (Frequency Selective Surface) composed of two periodic strips in xoy plane. The transmission characteristic of present structure is comprehensively investigated that convert linearly polarized wave into circular polarized wave at operated frequencies. The designed structure has optimal performance for x-band applications. In addition, the designed model of single and dual-layer circular polarizer feature exceptionally strong circular polarization with low loss transmission and attracted for radar and satellite applications. The designed structures of circular polarizers are simple and can be easy fabricated as well. The transmitted waves are achieved with RHCP (Right Handed Circular Polarization) wave at 9.34 GHz and LHCP (Left Handed Circular Polarization) wave at 10.73 GHZ. The corresponding axial ratio bandwidth is enhanced from 9.16- 10.85GHz = 16.89%, respectively. Meanwhile, the proposed dual-layer circular polarizer achieves transmission with RHCP wave at 9.59 GHz and axial ratio bandwidth is achieved from9.3-11.31GHz = 19.49%, respectively.
Highlights
Polarization is one of the most important characteristics of microwaves that transfer the important information through one system to another system
Various types of circular polarizer designs are composed of double-layer introduced by Euler [2] in which Fabry Perot interferometer approach has been employed to adjust the distance between the surfaces of layers [3]
We presented the design of single and duallayer circular polarizer structures based on FSS for Xband applications
Summary
Polarization is one of the most important characteristics of microwaves that transfer the important information through one system to another system. Controlling of EM (Electromagnetics) waves propagation have been always desirable for the researchers to manipulate polarization state in transmission, reflection or absorption. Circular polarization has gained more attention in microwave communication and satellite communication. Circular polarization solves the great challenges, such as, atmospheric absorption, lower susceptibility and reflection effects as well. It is widely used in many electromagnetic waves applications, such as, optical communications and remote sensing. It is often realized to manipulate the polarization state of incident wave. Circular polarizer can modify the polarization state to convert
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