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  • A Cavity-Backed Slot Antenna on Timber

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    Espinosa528349-Accepted.pdf (335.9Kb)
    File version
    Accepted Manuscript (AM)
    Author(s)
    Radwan, Mohamed
    Salchak, Yana
    Albadri, Noor
    Espinosa, Hugo G
    Thiel, David V
    Griffith University Author(s)
    Espinosa, Hugo G.
    Thiel, David V.
    Radwan, Mohamed A.
    Salchak, Iana
    Year published
    2021
    Metadata
    Show full item record
    Abstract
    Cavity-backed slot antennas can be used to detect anomalies and measure the dielectric properties of lossy media such as timber at microwave frequencies. An enhanced antenna design with the feed plate directly behind the rectangular slot allows maximum E-field coupling to the wood and provides more space for electronics inside the aluminum box. The E-field in a rectangular wood piece (100 mm × 70 mm × 70 mm) was calculated using CST simulations at the resonant frequency of 7.4 GHz. The wood material was modeled as isotropic with a relative permittivity of 2 and low conductivity (10 -6 S/m). A comparison between simulations ...
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    Cavity-backed slot antennas can be used to detect anomalies and measure the dielectric properties of lossy media such as timber at microwave frequencies. An enhanced antenna design with the feed plate directly behind the rectangular slot allows maximum E-field coupling to the wood and provides more space for electronics inside the aluminum box. The E-field in a rectangular wood piece (100 mm × 70 mm × 70 mm) was calculated using CST simulations at the resonant frequency of 7.4 GHz. The wood material was modeled as isotropic with a relative permittivity of 2 and low conductivity (10 -6 S/m). A comparison between simulations and a spherical wave calculation showed significant change in E-field in the very near-field region of the antenna at the distances smaller than 4 mm. The electrical field penetrated the 70 mm width, and reflection from the opposite wood-air interface was observed.
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    Conference Title
    2021 IEEE Asia-Pacific Microwave Conference (APMC)
    DOI
    https://doi.org/10.1109/apmc52720.2021.9661772
    Copyright Statement
    © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subject
    Nanotechnology
    Publication URI
    http://hdl.handle.net/10072/411316
    Collection
    • Conference outputs

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