Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns

Abstract A novel design for an ultra-wide bandwidth and thin microwave absorber is introduced utilizing two frequency selective surfaces (FSSs) with different patterns of resonating frequencies. The circuit parameters, inductance and capacitance, of the three types of FSS (square loop, cross, square...

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Autores principales:	Tian Liu, Sung-Soo Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Frequency Selective Surfaces (FSS) Ultrawide Bandwidth Periodic Array Structure Grating Lobes Absorption Bandwidth Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ae676629fa564271aacf8f1f430d1ffe
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spelling	oai:doaj.org-article:ae676629fa564271aacf8f1f430d1ffe2021-12-02T15:08:27ZUltrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns10.1038/s41598-018-32181-z2045-2322https://doaj.org/article/ae676629fa564271aacf8f1f430d1ffe2018-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-32181-zhttps://doaj.org/toc/2045-2322Abstract A novel design for an ultra-wide bandwidth and thin microwave absorber is introduced utilizing two frequency selective surfaces (FSSs) with different patterns of resonating frequencies. The circuit parameters, inductance and capacitance, of the three types of FSS (square loop, cross, square patch) were determined using an equivalent circuit and strip wire conductor model. The square loop FSS indicates a low frequency resonance (10 GHz) due to its high inductance and capacitance. On the other hand, the square patch of small inductance reveals a high resonating frequency (36 GHz). By optimizing the combination of the two FSSs, an ultra-wide absorption bandwidth (6.3–40.0 GHz for −10 dB reflection loss) was designed with a small total thickness of 5.5 mm, which is close to the theoretical limit. The free space measurement result with a test sample prepared by the screen printing method was in good agreement with the simulation result and verified the validity of the proposed design method. For these periodic array structures, however, the grating lobes were observed above the high frequency limit, and it needs to be emphasized that the further control of the unit cell periodicity is important, particularly for large oblique incidence angles.Tian LiuSung-Soo KimNature PortfolioarticleFrequency Selective Surfaces (FSS)Ultrawide BandwidthPeriodic Array StructureGrating LobesAbsorption BandwidthMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Frequency Selective Surfaces (FSS) Ultrawide Bandwidth Periodic Array Structure Grating Lobes Absorption Bandwidth Medicine R Science Q
spellingShingle	Frequency Selective Surfaces (FSS) Ultrawide Bandwidth Periodic Array Structure Grating Lobes Absorption Bandwidth Medicine R Science Q Tian Liu Sung-Soo Kim Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns
description	Abstract A novel design for an ultra-wide bandwidth and thin microwave absorber is introduced utilizing two frequency selective surfaces (FSSs) with different patterns of resonating frequencies. The circuit parameters, inductance and capacitance, of the three types of FSS (square loop, cross, square patch) were determined using an equivalent circuit and strip wire conductor model. The square loop FSS indicates a low frequency resonance (10 GHz) due to its high inductance and capacitance. On the other hand, the square patch of small inductance reveals a high resonating frequency (36 GHz). By optimizing the combination of the two FSSs, an ultra-wide absorption bandwidth (6.3–40.0 GHz for −10 dB reflection loss) was designed with a small total thickness of 5.5 mm, which is close to the theoretical limit. The free space measurement result with a test sample prepared by the screen printing method was in good agreement with the simulation result and verified the validity of the proposed design method. For these periodic array structures, however, the grating lobes were observed above the high frequency limit, and it needs to be emphasized that the further control of the unit cell periodicity is important, particularly for large oblique incidence angles.
format	article
author	Tian Liu Sung-Soo Kim
author_facet	Tian Liu Sung-Soo Kim
author_sort	Tian Liu
title	Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns
title_short	Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns
title_full	Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns
title_fullStr	Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns
title_full_unstemmed	Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns
title_sort	ultrawide bandwidth electromagnetic wave absorbers composed of double-layer frequency selective surfaces with different patterns
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/ae676629fa564271aacf8f1f430d1ffe
work_keys_str_mv	AT tianliu ultrawidebandwidthelectromagneticwaveabsorberscomposedofdoublelayerfrequencyselectivesurfaceswithdifferentpatterns AT sungsookim ultrawidebandwidthelectromagneticwaveabsorberscomposedofdoublelayerfrequencyselectivesurfaceswithdifferentpatterns
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Ultrawide Bandwidth Electromagnetic Wave Absorbers Composed of Double-Layer Frequency Selective Surfaces with Different Patterns

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