A dual-band sine-square FSS design

Abstract

This paper proposes a new frequency selective surface (FSS) based on the combination of four sinusoidal-waveform like shapes, each formed by the combination of two semi-circles, for an overall arrangement similar to a square shape. The proposed design was simulated and evaluated through a commercial electromagnetic (EM) simulation software. The sine-square FSS has a relatively simple design, yet provides a dual band frequency response, with narrow bandwidths compared to classical designs, and with a relatively stable angular behavior of up to at least 45 • . It was shown that the second resonance frequency can, within a limited range, be independently controlled from the first resonance frequency band. Both band reject and band pass variants, as well as possible active/tunable implementations of this FSS design, were evaluated and are discussed in this paper.

Dual-Band Frequency Selective Surface With Compact Dimension and Low Frequency Ratio

“…In recent years, FSS has caused extensive research for its widely applications in hybrid radomes, antenna sub-reflectors, absorbers, electromagnetic shields, etc. [2] - [8].…”

Multi-Semicircle-Based Single- and Dual-Band Frequency-Selective Surfaces: Achieving Narrower Bandwidth and Improved Oblique Incidence Angular Stability

“…The dual-band eight-semicircle FSS is achieved by combining eight semicircles in a square like shape design. An initial report regarding the eight-semicircle FSS is present in [19], where only simulation results were presented. In this paper, such dual-band FSS design was further studied, with improvements to parametric equations, thorougher comparison with dual-band designs and subsequently validation with a physical prototype, including also design guidelines.…”