Design and Validation of Flexible Multilayer Frequency Selective Surface With Transmission Zeros

The design, analysis, and validation of a flexible multilayer frequency selective surface (MFSS) with two transmission zeros at the upper side of the passband is presented. The MFSS unit cell is composed of two metallic quasi-Jerusalem-cross patterns on the top and the bottom layers, a metallic slot...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2019-02, Vol.18 (2), p.250-254
Main Authors: Wu, Bian, Li, Hui-Ling, Zhao, Yu-Tong, Wang, Yue-Lin, Lu, Wei-Bing, Chen, Liang
Format: Article
Language:English
Subjects:
Apertures
Capacitance
Couplings
Equivalent circuits
Filtering theory
Flexible substrate
Frequency selective surfaces
Insertion loss
multilayer frequency selective surface (MFSS)
Multilayers
Polarization
Polytetrafluoroethylene
Substrates
transmission zeros
Unit cell
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Summary:The design, analysis, and validation of a flexible multilayer frequency selective surface (MFSS) with two transmission zeros at the upper side of the passband is presented. The MFSS unit cell is composed of two metallic quasi-Jerusalem-cross patterns on the top and the bottom layers, a metallic slot coupling aperture on the middle layer, and two flexible polyimide-Teflon supported substrates. The equivalent circuit is derived to explain the principle of transmission poles and zeros. This MFSS exhibits a good resonance stability for different polarization and incident angles. A prototype flexible MFSS centered at 21.6 GHz is fabricated and measured, which shows an insertion loss of 1.3 dB and a fractional bandwidth of 15.7%. The stable performances of the MFSS at oblique incidences and under different bent conditions for TE and TM polarization are demonstrated as well.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2018.2888523