A Tri-band Second-order Frequency Selective Surface Designing and Analysis

Gao Shan,Chunyan Gao,Chunlan Chen,Hongbin Pu,F Wen,S.M Ziaei

doi:10.1051/e3sconf/202127503084

Abstract

In this paper, inspired from the technique of patch–aperture–patch, a novel tri-band frequency selective surface with second-order band-pass response in each operation band is presented. The design is implemented by cascading a two-dimensional periodic array of three square loops and an array of wire grids. The proposed structure composed of three metal and two dielectric layers acts as a spatial dual band microwave filter with large band separation. The predicted FSS has the merits of broadband response, excellent stability for different incident angles, and sharp roll-off at X-, Ku- and K-band, respectively. The simulation and measurement are carried out and discussed. The measured results agree well with the simulated ones.

Highlights

Frequency selective surfaces have been studied extensively for many years [1]
Multi-band FSSs are the result of the following techniques: Multi-order resonance of a single layer FSS [4,5,6], loading lumped elements [7] and fractal elements [2], etc
The FSS has the merits of polarization insensitivity and incident angle stability

Summary

Introduction

Frequency selective surfaces have been studied extensively for many years [1]. They are widely used in the design of various microwave devices, such as antenna reflectors, radomes, absorbers, as well as electromagnetic band gap materials [2]. Multi-band FSSs are the result of the following techniques: Multi-order resonance of a single layer FSS [4,5,6], loading lumped elements [7] and fractal elements [2], etc. These designs generally have one resonation in each operating band. The patch–aperture–patch (PAP) FSS was proposed and developed in [10,11,12] Such a kind of FSS possesses higher selectivity and flat pass-band in its operating frequencies, but such FSS usually have larger element size. The design procedure, the simulation and measurement results of predicted FSS are presented and discussed

Structure Design and Operation Principle

Simulation And Measurement

Conclusions