Characterization of Capacitor-based Reconfigurable Frequency Selective Surfaces

New UWB Shielding with Frequency Selective Surfaces

In this paper a Frequency Selective Surface (FSS) as a UWB electromagnetic shield is introduced. The proposed FSS comprises a quasi-J.C-Jerusalem Cross- and a copper ring, which are located at both sides of a FR4 substrate and can represent a S.E -Shielding Effectiveness- better than 20dB in 90% bandwidth of Ultra Wide Band frequency. This structure is compact and thin. Each cell comprises J.C ...

A Novel Concept for Reconfigurable Frequency Selective Surfaces Based on Silicon Switches

The authors describe a novel concept for reconfigurable frequency selective surfaces based on metallic dipole and cross-dipole elements connected by switches on an exposed silicon substrate. As the conductivity of silicon can be varied over a large dynamic range by photonic excitation, it represents a good candidate substrate material for producing effective switches. The genetic algorithm was ...

Design of Novel Reconfigurable Frequency Selective Surfaces with Two Control Tech- Niques

Novel reconfigurable frequency selective surfaces (RFSS) are designed using a finite-difference time-domain with periodic boundary condition (FDTD/PBC) algorithm. The FSS are reconfigured using two techniques: the first technique providing a wide frequency tuning range is based on using diodes to change the current distribution over the FSS surface, and the second technique exhibiting a finer f...

Miniaturized-Element Frequency Selective Surfaces

This article presents an overview of the progress made in the design of surface topology, fabrication, and applications of a new class of spatial filters known as miniaturized-element frequency selective surfaces (FSS’s) in recent years at the University of Michigan. The research in designing the new class was initiated with the demand for FSS’s with overall small dimensions for low frequency a...

A Compressible Reconfigurable Frequency Selective Surface