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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2019-05-01
A Wideband Conformal Antenna with High Pattern Integrity for mmWave 5G Smartphones
By
Gulur Sadananda Karthikeya,

    Dr. Gulur Sadananda Karthikeya

    Department of electronics and Communication

    BMS College of Engineering

    India

    Homepage

Mahesh Pandurang Abegaonkar,

    Prof. Mahesh Pandurang Abegaonkar

    Centre for Applied Research in Electronics

    Indian Institute of Technology Delhi

    India

    Homepage

Shiban Kishen Koul

    Dr. Shiban Kishen Koul

    Indian Institute of Technology Delhi

    India

    Homepage

Progress In Electromagnetics Research Letters, Vol. 84, 1-6, 2019
doi:10.2528/PIERL19030503 | Google Scholar

Abstract
In this paper, a co-planar waveguide fed circular slot antenna with an operational impedance bandwidth of 20-28 GHz is proposed. In order to reduce the effective occupied volume when the antenna is integrated onto a typical mmWave 5G smartphone, a conformal topology is investigated. Since the radiating aperture is not backed by an electrically large ground plane, it leads to a bidirectional beam resulting in an inherently low forward gain of 4 dBi with a front to back ratio of 1 dB. Hence, a compact exponentially tapered copper film reflector is integrated electrically close (0.046λ at 28 GHz) to the radiating aperture to achieve a forward gain of 8-9 dBi with an effective radiating volume of 0.24λ03. The impedance bandwidth is from 25 to 30 GHz (18.2%) with a 1-dB gain bandwidth of 34.7% indicating high pattern integrity across the band. Since the proposed antenna element offers wideband with high gain, it is a potential candidate for mmWave 5G smartphones.
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Citation
Gulur Sadananda Karthikeya, Mahesh Pandurang Abegaonkar, and Shiban Kishen Koul, "A Wideband Conformal Antenna with High Pattern Integrity for mmWave 5G Smartphones," Progress In Electromagnetics Research Letters, Vol. 84, 1-6, 2019.
doi:10.2528/PIERL19030503
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