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    Study on isolation improvement between closely-packed patch antenna arrays based on fractal metamaterial electromagnetic bandgap structures

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    No_264_Alibak_StudyIsolation.pdf (724.0Kb)
    Date
    2018
    Author
    Alibakhshikenari, Mohammad 
    Virdee, Bal S. 
    See, Chan H. 
    Abd-Alhameed, Raed 
    Ali, Abdul 
    Hussein Ali, Ammar 
    Falcone Lanas, Francisco Javier Upna Orcid
    Limiti, Ernesto 
    Version
    Acceso abierto / Sarbide irekia
    Type
    Artículo / Artikulua
    Version
    Versión aceptada / Onetsi den bertsioa
    Project Identifier
    European Commission/Horizon 2020 Framework Program/722424 openaire
    Impact
     
     
     
    10.1049/iet-map.2018.5103
     
     
     
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    Abstract
    A decoupling metamaterial (MTM) configuration based on fractal electromagnetic-bandgap (EMBG) structure is shown to significantly enhance isolation between transmitting and receiving antenna elements in a closely-packed patch antenna array. The MTM-EMBG structure is cross-shaped assembly with fractal-shaped slots etched in each arm of the cross. The fractals are composed of four interconnected-'Y ... [++]
    A decoupling metamaterial (MTM) configuration based on fractal electromagnetic-bandgap (EMBG) structure is shown to significantly enhance isolation between transmitting and receiving antenna elements in a closely-packed patch antenna array. The MTM-EMBG structure is cross-shaped assembly with fractal-shaped slots etched in each arm of the cross. The fractals are composed of four interconnected-'Y-shaped' slots that are separated with an inverted-'T-shaped' slot. The MTM-EMBG structure is placed between the individual patch antennas in a 2 × 2 antenna array. Measured results show the average inter-element isolation improvement in the frequency band of interest is 17, 37 and 17 dB between radiation elements #1 & #2, #1 & #3, and #1 & #4, respectively. With the proposed method there is no need for using metallic-via-holes. The proposed array covers the frequency range of 8-9.25 GHz for X-band applications, which corresponds to a fractional-bandwidth of 14.5%. With the proposed method the edge-to-edge gap between adjacent antenna elements can be reduced to 0.5λ0 with no degradation in the antenna array's radiation gain pattern. Across the array's operating band, the measured gain varies between 4 and 7 dBi, and the radiation efficiency varies from 74.22 and 88.71%. The proposed method is applicable in the implementation of closely-packed patch antenna arrays used in SAR and MIMO systems. © 2018, The Institution of Engineering and Technology. [--]
    Subject
    Fractal, Mutual coupling, Isolation enhancement, Planar antennas, Electromagnetic bandgap (EMBG), Metamaterial (MTM), Multiple-input-multiple-output (MIMO), Synthetic aperture radar (SAR)
     
    Publisher
    Institution of Engineering and Technology
    Published in
    IET Microwaves, Antennas and Propagation, 12 (14), 2241-2247
    Departament
    Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación / Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko, Elektroniko eta Telekomunikazio Saila
     
    Publisher version
    https://doi.org/10.1049/iet-map.2018.5103
    URI
    https://hdl.handle.net/2454/34679
    Sponsorship
    This work was partially supported by innovation programme under grant agreement H2020-MSCA-ITN-2016 SECRET-722424 and the financial support from the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/E022936/1.
    Appears in Collections
    • Investigaciones financiadas por la Unión Europea (OpenAire) - Europar Batasunak finantzatutako ikerketak (OpenAire) [157]
    • Artículos de revista - Aldizkari artikuluak [4202]
    • Artículos de revista DIEC - IEKS Aldizkari artikuluak [240]
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