Grating Lobes Suppression in Frequency Selective Surfaces Using Electromagnetic Band Gap with Square Holes

Tiago dos Santos Bezerra; Antonio Luiz Pereira de Siqueira Campos; Ruann Victor de Andrade  Lira; Alfredo  Gomes Neto

doi:10.1590/2179-10742020v19i4860

Grating Lobes Suppression in Frequency Selective Surfaces Using Electromagnetic Band Gap with Square Holes

Authors

T. S. Bezerra https://orcid.org/0000-0002-9682-4092
A. L. P. S. Campos Universidade Federal do Rio Grande do Norte https://orcid.org/0000-0003-4350-6389
R. V. A. Lira https://orcid.org/0000-0002-5403-261X
A. Gomes Neto https://orcid.org/0000-0001-5437-9093

DOI:

https://doi.org/10.1590/2179-10742020v19i4860

Keywords:

FSS, EBG, Suppression, Grating lobes

Abstract

In this paper, the authors present a proposal for an application of electromagnetic bandgap (EBG), for suppression of grating lobes, in frequency selective surfaces (FSS), not yet studied in the literature. An alternative type of EBG with square holes was proposed to reduce the computational effort in simulations. The study consists of an application of a rectangular periodic array of cylindrical and square holes in FSS dielectric substrate to create rejection bands and suppress specific resonant frequency modes. We built four prototypes and compared measured results with simulated results obtained with ANSYS HFSS. Simulations and measurements show suppression levels up to 6 dB. A good agreement between the results is observed. The FSS with EBG with square holes allows a simulation time 70 % lower than FSS with EBG with cylindrical holes.

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Published

2020-10-19

How to Cite

Bezerra, T. dos S., Campos, A. L. P. de S., Lira, R. V. de A. ., & Gomes Neto, A. . (2020). Grating Lobes Suppression in Frequency Selective Surfaces Using Electromagnetic Band Gap with Square Holes. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 19(4), 510–521. https://doi.org/10.1590/2179-10742020v19i4860