A multi-slotted 2-element quadband MIMO antenna for 4G and 5G applications

Maryam Rasool, Imran Rashid, Abdul Rauf, Adil Masood, Farooq Ahmed Bhatti and Bilal Ijaz

Journal of Electromagnetic Waves and Applications, 2021, vol. 35, issue 15, 2062-2077

Abstract: This paper presents design of a multi-slotted quadband 2-element MIMO antenna suitable for 4G and 5G applications. The design is realized on an 18.5 × 56 mm2 (0.154 $ {\lambda _o} $ λo × 0.467 $ {\lambda _o} $ λo, where $ {\lambda _o} $ λo is the wavelength of the lowest resonant frequency of 2.5 GHz) FR4 epoxy substrate having a thickness of 1.6 mm and a relative permittivity of 4.4. The simulated and measured results agree well with each other. A simple de-coupler structure has been incorporated on the bottom side to reduce the mutual coupling at operating frequency bands (2.5, 3.7, 4.3, and 5.5 GHz). Furthermore, it was observed that the measured envelope correlation coefficient of the designed MIMO antenna is considerably lower than 0.05. Also, the design exhibits measured gains of 3.49, 2.97, 2.93, and 2.54 dBi at 2.5, 3.7, 4.3, and 5.5 GHz, respectively.

Date: 2021
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DOI: 10.1080/09205071.2021.1934565

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