Closely spaced tri-band frequency selective surfaces based on split ring slots

A tri-band frequency selective surface (FSS) with close band spacing based on split ring slots for y-polarised incident waves is investigated. The close band response is obtained by reducing the strong mutual coupling between the closely packed concentric rings through splitting the ring slots and r...

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Bibliographic Details
Published in:Electronics letters 2016-04, Vol.52 (9), p.727-729
Main Authors: Fabian-Gongora, H, Martynyuk, A.E, Rodriguez-Cuevas, J, Martinez-Lopez, J.I
Format: Article
Language:English
Subjects:
close band spacing
Electronics
frequency 27.3 GHz to 36.2 GHz
Frequency selective surfaces
Incidence
Incident waves
Ka band FSS
microwave antenna arrays
Microwave technology
multifrequency antennas
Mutual coupling
split ring slots
Splitting
Stability
strong mutual coupling
tri‐band frequency selective surfaces
y‐polarised incident waves
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Summary:A tri-band frequency selective surface (FSS) with close band spacing based on split ring slots for y-polarised incident waves is investigated. The close band response is obtained by reducing the strong mutual coupling between the closely packed concentric rings through splitting the ring slots and redistributing the location of the surface currents at resonances. To validate the proposed FSS, a Ka band FSS was designed, fabricated and tested. Experimental results showed closely spaced resonances at 27.3, 31.7 and 36.2 GHz. Frequency ratios of 1.16 for the second to the first resonance, and 1.14 for the third to the second one were obtained. Also, good stability is observed for oblique incidence.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2016.0255