A compact slot MIMO antenna for smartphones with metal housing

Di Wu, Xiaoxue Hua, Sing Wai Cheung, Bo Wang, Min Li and Bing Xiao

Journal of Electromagnetic Waves and Applications, 2018, vol. 32, issue 2, 204-214

Abstract: A compact slot multiple-input multiple-output Antenna (CSMA) for smartphones with metal housing is proposed in this paper. The antenna has a slot radiator shared between two input ports and a T-shaped defect-ground slot (DGS) for decoupling. A function for selecting the best dimensions of the DGS for optimum decoupling is derived using the transmission theory. The CSMA antenna is designed using simulation to operate in the 2.4-GHz wireless-area-network (WLAN) system and then fabricated for measurement. Measured results show that the antenna has an impedance bandwidth (IMBW) of 2.4–2.48 GHz, mutual coupling from −19 to −29 dB and envelope-correlation coefficient (ECC) below 0.0867 within the IMBW. The antenna is very easy to fabricate and is a potential candidate for the MIMO smartphones antennas with metal housing.

Date: 2018
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DOI: 10.1080/09205071.2017.1374883

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