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    Interaction between closely packed array antenna elements using meta-surface for applications such as MIMO systems and synthetic aperture radars

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    Date
    2018
    Author
    Alibakhshikenari, Mohammad 
    Virdee, Bal S. 
    Shukla, Panchamkumar 
    See, Chan H. 
    Abd-Alhameed, Raed 
    Khalily, Mohsen 
    Falcone Lanas, Francisco Javier Upna Orcid
    Limiti, Ernesto 
    Version
    Acceso abierto / Sarbide irekia
    Type
    Artículo / Artikulua
    Version
    Versión publicada / Argitaratu den bertsioa
    Project Identifier
    European Commission/Horizon 2020 Framework Program/722424 openaire
    Impact
     
     
     
    10.1029/2018RS006533
     
     
     
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    Abstract
    The paper presents a technique to enhance the isolation between adjacent radiating elements that is common in densely packed antenna arrays. Such antennas provide frequency beam-scanning capability needed in multiple-input multiple-output (MIMO) systems and synthetic aperture radars. The method proposed here uses a metamaterial decoupling slab (MTM-DS), which is located between radiating elements ... [++]
    The paper presents a technique to enhance the isolation between adjacent radiating elements that is common in densely packed antenna arrays. Such antennas provide frequency beam-scanning capability needed in multiple-input multiple-output (MIMO) systems and synthetic aperture radars. The method proposed here uses a metamaterial decoupling slab (MTM-DS), which is located between radiating elements, to suppress mutual coupling between the elements that would otherwise degrade the antenna efficiency and performance in both the transmit and receive mode. The proposed MTM-DS consists of mirror imaged E-shaped slits engraved on a microstrip patch with inductive stub. Measured results confirm over 9–11 GHz with no MTM-DS the average isolation (S12) is −27 dB; however, with MTM-DS the average isolation improves to −38 dB. With this technique the separation between the radiating element can be reduced to 0.66λ0, where λ0 is free space wavelength at 10 GHz. In addition, with this technique there is 15% improvement in operating bandwidth. At frequencies of high impedance match of 9.95 and 10.63 GHz the gain is 4.52 and 5.40 dBi, respectively. Furthermore, the technique eliminates poor front-to-back ratio encountered in other decoupling methods. MTM-DS is also relatively simple to implement. Assuming adequate space is available between adjacent radiators the MTM-DS can be fixed retrospectively on existing antenna arrays, which makes the proposed method versatile. ©2018. American Geophysical Union. All Rights Reserved. [--]
    Subject
    Antenna arrays, Frequency beam scanning, Metamaterial decoupling slab (MTM-DS), Multiple-input multiple-output (MIMO) systems, Synthetic aperture radars
     
    Publisher
    Wiley
    Published in
    Radio Science, 53 (11), 1368-1381
    Departament
    Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación / Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa eta Komunikazio Saila
     
    Publisher version
    https://doi.org/10.1029/2018RS006533
    URI
    https://hdl.handle.net/2454/33111
    Sponsorship
    This work is partially supported byInnovation Programme under grant agreement H2020-MSCA-ITN-2016SECRET-722424 and the financialsupport from the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/E022936/1. The authors confirm that there is no relevant domain or general repository for the data. The authors have arranged for all data to be contained in the manuscript (not a repository) for reviewers andreaders to access them, and the acknowledgments section affirms this.
    Appears in Collections
    • Artículos de revista - Aldizkari artikuluak [4253]
    • Artículos de revista DIEC - IEKS Aldizkari artikuluak [243]
    • Investigaciones financiadas por la Unión Europea (OpenAire) - Europar Batasunak finantzatutako ikerketak (OpenAire) [160]
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