Title :
A broadband frequency selective surface absorber using nonuniform circular metallic patches
Author :
M. Karami;R. A. Sadeghzadeh;M. Sharifi
Author_Institution :
Faculty of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran
Abstract :
In this paper, a new broadband Frequency Selective Surface (FSS) electromagnetic absorber (EMA) is proposed. The absorber consists of circular metallic patches with different dimensions backed by a foam spacer and metallic ground. The patches provide different resonances resulting in improvement of the absorption characteristics of the proposed EMA. The reflection coefficient of the proposed EMA with a thickness of 3.4 mm is less than -10 dB from 8 to 12 GHz frequency spectrum. For both TE and TM-polarized waves, the reflection coefficient of the presented EMA is almost independent of the incidence angle from 0° to 30°.
Keywords :
"Frequency selective surfaces","Reflection coefficient","Integrated circuit modeling","Broadband antennas","Equivalent circuits","Broadband communication","Absorption"
Conference_Titel :
Antennas & Propagation Conference (LAPC), 2015 Loughborough
DOI :
10.1109/LAPC.2015.7365995
