The intent of this paper is to provide an overview of basic concepts, types, techniques, and
experimental studies of the current state-of-the-art Frequency Selective Surfaces (FSSs) …

This article analyzes a review of recent developments in the field of frequency selective
surface (FSS)-based advanced electromagnetic (EM) structures. FSSs have been the …

In the present scenario, there are prime challenges that need to be addressed in modern
wireless communication systems. These challenges consist of implementation of techniques …

A varactor-tunable second-order bandpass frequency-selective surface (FSS) for microwave
frequencies is presented in this article. The FSS is composed of three stacked metallic …

In this paper, a multifunctional active frequency selective surface (MAFSS) is presented
based on the switching responses of active components. The proposed structure comprises …

A reconfigurable frequency-selective surface (RFSS) for electromagnetic shielding
applications is presented in this letter. The unit cell of the proposed RFSS contains a pair of …

This study realized a polarization-insensitive active frequency selective surface (AFSS) that
simultaneously exhibited mode switching and frequency tunable capacity. Its geometry …

In this letter, a dual-band tunable bandstop frequency selective surface (FSS), which is
capable of exhibiting independent tuning for the top and bottom layers, has been presented …

Frequency-tunablefilters are in demand for applications requiring high spectral selectivity.
To this end, frequency-selective surfaces (FSSs) have been widely applied for spatial …

In this letter, a polarization-insensitive absorptive/transmissive reconfigurable frequency
selective surface (RFSS) using pin diodes is presented. The RFSS structure incorporates …