Very Closely Located Dual-Band Frequency Selective Surfaces via Identical Resonant Elements

Very closely located dual-band frequency selective surfaces (FSSs) are proposed in this letter. The ratio of two operating bands can be as low as 1.06. The proposed FSSs comprise simply a single-layer metallic pattern on a thin dielectric substrate. The mechanism to achieve the low ratio between two...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2015-01, Vol.14, p.414-417
Main Authors: Huang, Fan-Cheng, Chiu, Cheng-Nan, Wu, Tzong-Lin, Chiou, Yih-Peng
Format: Article
Language:English
Subjects:
Antenna measurements
Bandstop filters
Dual band
frequency selective surface (FSS)
Frequency selective surfaces
periodic structures
Prototypes
Resonant frequency
spatial filters
Wireless communication
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Summary:Very closely located dual-band frequency selective surfaces (FSSs) are proposed in this letter. The ratio of two operating bands can be as low as 1.06. The proposed FSSs comprise simply a single-layer metallic pattern on a thin dielectric substrate. The mechanism to achieve the low ratio between two operating bands is attributed to two separated resonant modes caused by four identical elements in a unit cell. Asymmetrical meandered pattern is introduced to improve stability of frequency responses with respect to incident angles. Moreover, the ratio of the operating bands can be tuned through rotation of the elements with ratios in the range from 1.06 to 1.10. In order to validate the designs, the prototype of the dual-band FSSs has been fabricated and tested. And the measured results show good agreements with the simulated ones.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2014.2366096