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    Directional and Isolated UWB-MIMO Antenna Based Uniplanar UWB-FSS Array and T-strip for Bi-static Microwave Imaging: Baggage-Scanner

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    Accepted manuscript (2.781Mb)
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    Publication date
    2021-02
    Author
    Abdulhasan, R.A.
    Alias, R.
    Ramli, K.N.
    Seman, F.C.
    Abd-Alhameed, Raed A.
    Jawhar, Y.A.
    Keyword
    MIMO antenna
    UWB FSS
    Microwave imaging (MWI) baggage-scanner detection
    Rights
    © 2021 Wiley This is the peer reviewed version of the following article: Abdulhasan RA, Alias R, Ramli KN et al (2021) Directional and Isolated UWB-MIMO Antenna Based Uniplanar UWB-FSS Array and T-strip for Bi-static Microwave Imaging: Baggage-Scanner. International Journal of RF and Microwave Computer-Aided Engineering. 32(2): e22960, which has been published in final form at https://doi.org/10.1002/mmce.22960. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
    Peer-Reviewed
    Yes
    Open Access status
    Green
    
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    Abstract
    This article presented a novel compact multi-input-multi-output (MIMO) hexagonal monopole antenna with a uniplanar compact frequency-selective-surface (FSS) array for microwave imaging (MWI). The ultra-wideband (UWB) dual-element linear MIMO antenna was designed on the FR4 substrate with 50 Ω coplanar waveguide feed, T-strip isolation, novel numerical calculation, and equivalent circuit analyses. The main issues of realising high-resolution images based on planer UWB antenna for MWI are the low gain, omnidirectional pattern, design size, and mutual coupling of MIMO design. A novel technique was proposed to solve a hybrid issue (mutual coupling) of the MIMO reflected-waves from the FSS array and direct-wave. The uniplanar UWB-FSS unit cell was compacted by combining a square-loop and cross-dipole with a size of 0.095λ×0.095λ. The novel isolated UWB-MIMO antenna and UWB-FSS array (IMAF) were integrated, after investigating the distance between the antenna and FSS. The fabricated IMAF with a stable gain improvement of 4.5 dBi higher than the antenna without FSS, directional radiation pattern, size of 30×73.8×21.6 mm3 observed that a low mutual coupling of -27 dB, and operation bandwidth of 3.0-11.7 GHz. Moreover, a handbag was scanned experimentally via the bi-static approach to detect a small concealed object. The MWI system based on the MIMO antenna with FSS was displayed image resolution of 55% higher than that of MIMO antenna without FSS. The new baggage-scanner approach confirmed that the proposed MIMO antenna with FSS array can lead the humanity for healthy MWI applications.
    URI
    http://hdl.handle.net/10454/18653
    Version
    Accepted manuscript
    Citation
    Abdulhasan RA, Alias R, Ramli KN et al (2021) Directional and Isolated UWB-MIMO Antenna Based Uniplanar UWB-FSS Array and T-strip for Bi-static Microwave Imaging: Baggage-Scanner. International Journal of RF and Microwave Computer-Aided Engineering. 32(2): e22960.
    Link to publisher’s version
    https://doi.org/10.1002/mmce.22960
    Type
    Article
    Collections
    Engineering and Informatics Publications

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