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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2021-02-14
Isolation Improvement Using Asymmetric Radiators and Ground Plane Diversity Mechanism in a Six-Element UWB MIMO Antenna Design
By
Aicha Mchbal,

    Dr. Aicha Mchbal

    Department of Physics, Information Systems and Telecommunications Laboratory, Faculty of Science

    Abdelmalek Essaadi University

    Morocco

    Homepage

Naima Amar Touhami,

    Dr. Naima Amar Touhami

    Faculty of Sciences

    Abdelmalek Essaadi University

    Morocco

    Homepage

Hanae Elftouh,

    Dr. Hanae Elftouh

    Faculty of Science

    Abdelmalek Essaâdi University

    Morocco

    Homepage

Aziz Dkiouak

    Dr. Aziz Dkiouak

    Faculty of Sciences

    Chouaib Doukkali University

    Morocco

    Homepage

Progress In Electromagnetics Research B, Vol. 91, 19-37, 2021
doi:10.2528/PIERB20122205 | Google Scholar

Abstract
A compact six elements MIMO antenna is presented for UWB applications. The proposed MIMO array consists of non-identical monopole antennas with distinctive ground planes so as to nullify mutual coupling amid side-by-side elements. Also, by properly placing the antenna elements exploiting cross polarization diversity, a good isolation throughout the operating bandwidth is achieved. Moreover, two parasitic inverted L stubs in combination with small rectangular stubs are employed near the middle-placed radiators and corner placed radiators, respectively, in order to extend the frequency band and enhance the impedance matching. Results show a good reflection coefficient about -10 dB, a high isolation >20 dB, an envelope correlation coefficients <0.15, a high diversity gain equal to 9.3, and finally, a maximum value of efficiency for both used antenna elements which is about 78% and 60% with 6 and 5 dBi of gain, respectively. They validate the proposed MIMO antenna efficiency for UWB diversity applications.
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Citation
Aicha Mchbal, Naima Amar Touhami, Hanae Elftouh, and Aziz Dkiouak, "Isolation Improvement Using Asymmetric Radiators and Ground Plane Diversity Mechanism in a Six-Element UWB MIMO Antenna Design," Progress In Electromagnetics Research B, Vol. 91, 19-37, 2021.
doi:10.2528/PIERB20122205
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