Frequency Selective Surfaces for Electromagnetic Shielding of Pocket-Sized Transceivers
Artikel i vetenskaplig tidskrift, 2020

This article presents a comprehensive study of the use of small-sized frequency selective surfaces (FSS) to selectively shield pocket-sized devices against EM disturbances. A typical use case is to protect a 2.4-GHz transceiver (e.g. WiFi/Bluetooth) against ISM/GSM disturbances (around 868/915 MHz), using an 8.2 – 4.1 cm FSS structure. A detailed comparison is drawn between results in real and emulated far-fields for different FSS-to-antenna distances (5 and 25 mm), which is further confirmed by emission measurements employing an open transverse electromagnetic cell. Results demonstrate, in line with full-wave simulations including calculated Poynting integrals, that such a FSS can effectively reduce power by about 5 dB in the stopband, while providing no attenuation in the passband and is small enough for an easy integration. Moreover, it is shown that the farther the FSS from the antenna, the closer the results to a no-FSS scenario. This provides an insight to reconsider FSSs for the shielding of mobile and/or smart devices.

Numerical models

Frequency selective surfaces

smart devices

Electromagnetic compatibility

Antenna measurements

open TEM cell

Emission testing

frequency selective surface (FSS)

shielding

Transceivers

TEM cells

Författare

M. Koohestani

Université de Rennes 1

Richard Perdriau

Université de Rennes 1

Mohamed Ramdani

Université de Rennes 1

Jan Carlsson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Antennsystem

IEEE Transactions on Electromagnetic Compatibility

0018-9375 (ISSN)

Vol. 62 6 2785-2792 9123422

Ämneskategorier

Signalbehandling

DOI

10.1109/TEMC.2020.2999635

Mer information

Senast uppdaterat

2021-01-05