Abstract

In this paper, a novel multiple-input multiple-output (MIMO) antenna for 5G applications in n77, n78, n79 and 6 GHz bands is proposed. The antenna structure is compact, measuring 30×50×1.5 mm³. The antenna is composed of two microstrip antenna units, which are formed of two hexagonal rings with lotus and small human, with the floor partially removed. The antenna functions in a frequency range of 3.3 to 9 GHz. The flow of coupling currents is impeded, and the isolation of the antenna is improved by the use of stepped rectangular slots and the floor of the projecting T-shaped structure, resulting in the antenna having an isolation of less than -20 dB over the entire operating bandwidth. Furthermore, the envelope correlation coefficient (ECC) is less than 0.008, the diversity gain (DG) greater than 9.95, the total active reflectance coefficient (TARC) less than -30 dB, and the channel capacity loss (CCL) less than 0.32 bit/s/Hz. The simulations and measurements of the antenna demonstrate its reliability and stability, thus indicating its potential for significant applications in 5G wireless communications.

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Mr. Tianchu Yang

Dr. Shanhua Yao

Mr. Xiaorong Qiu

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