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Popup Tunable Frequency Selective Surfaces for Strain Sensing

Soltani, Shaghayegh, Taylor, P.S., Parker, Edward A., Batchelor, John C. (2020) Popup Tunable Frequency Selective Surfaces for Strain Sensing. IEEE Sensors Journal, . pp. 1-4. ISSN 1530-437X. E-ISSN 1530-437X. (doi:10.1109/LSENS.2020.2983685) (KAR id:80605)

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A 3D popup frequency selective surface (FSS) is presented that can be tuned by the amount of strain due to mechanical loading in its elastomeric substrate. The proposed FSS structure comprises periodic two-dimensional (2D) crossed dipoles attached to the substrate at selective bonding sites. Strain release in the substrate induces compressive stress in the attached FSS, converting it to a 3D periodic pattern. With the out of plane displacement, the interaction with the incident field and mutual interactions between the elements are altered, resulting in a resonant frequency shift and a more stable response regarding the incident angles from 0o to 45o. A design of popup FSS structure is introduced for strain sensing applications. The potential sensor can measure up to 50% strain in the substrate by frequency down-shift from 3.1 GHz to 2.4 GHz. Multiphysics Finite Element Method (FEM) modeling of the mechanical and RF simulation was in good correlation with the experimental data and demonstrates the potential of these structures as sensors.

Item Type: Article
DOI/Identification number: 10.1109/LSENS.2020.2983685
Projects: [UNSPECIFIED] Passively Powered Non-Invasive Human Body Sensing on Bio- Degradable Conformal Substrates
Uncontrolled keywords: Compressive stress, Frequency selective surface, multiphysics simulation, strain.
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: John Batchelor
Date Deposited: 24 Mar 2020 22:18 UTC
Last Modified: 16 Feb 2021 14:12 UTC
Resource URI: (The current URI for this page, for reference purposes)
Taylor, P.S.:
Batchelor, John C.:
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