A 5G Hybrid Circular Polarization MIMO Antenna

In this paper, a Si-shaped circular polarization (CP) antenna for 5G communication system is proposed. The proposed antenna consists of two identical and symmetrical Chinese character “司” with two L-shaped feeding probes that are connected to the metal ground plane. The two Chinese characters “司” with a pronunciation of “Si” are modeled on the top of substrate to construct radiation elements. By simulating and optimizing in HFSS 2019, the results show that a -6 dB fractional bandwidth of 22.47% from 2.37 GHz to 2.97 GHz has been achieved for the proposed Si-shaped MIMO antenna and the axial bandwidth of 2.31~2.84 GHz, 2.30~2.87 GHz has also been obtained for each Si-shaped CP antenna element, respectively, which can cover the n41 band of 5G communication from 2.515 GHz to 2.675 GHz.