volume | PIER Journals

Abstract

The design and analysis of a dual-band two-port multiple-input-multiple-output (MIMO) antenna with high isolation suitable for fifth-generation (5G) and wireless local area network (WLAN) applications are introduced in this paper. On the top of the substrate, the proposed antenna element is mainly composed of a defected circular ring with an L-shaped strip, an F-shaped stub, and an L-shaped stub. The bottom of the substrate comprises two rectangular defected ground structures and a neutral line with two Y-shaped stubs. The antenna isolation structure is employed to minimize the coupling between antenna elements, which is larger than 15 dB. The overall dimension of the proposed two-port MIMO antenna is approximately 45 mm × 45 mm × 1.59 mm. The measured -10 dB impedance frequency bands include 3.28-3.72 GHz and 4.44-5.92 GHz, which can cover 5G (3.3-3.6 GHz and 4.8-5 GHz) and IEEE 802.11 a/ac/ax (5.15-5.35 GHz and 5.47-5.85 GHz). The measured efficiency is greater than 60% and 55% at the lower and higher frequency bands. The measured peak gain ranges from 4 dBi to 5.8 dBi in both operating frequency bands. The proposed MIMO antenna is feasible for the 5G and WLAN applications.

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Dr. Jing Cai

Dr. Jianlin Huang

Dr. Bo Chen

Dr. Lingrong Shen

Dr. Tian Hong Loh

Professor Gui Liu