Design of 5G Microstrip patch array antenna for gain enhancement

Abstract

A Novel 5G antenna is designed in this research, which resonates at 28GHz. In modern wireless communication, there is a need to develop a 5G antenna with enhanced gain value, and the antenna size should be small and low-profile. The design of the patch of the 5G antenna consists of a rectangular ring of 8mmx5mm. The rectangular ring is of 1mm size from all sides. Various antenna parameters are measured, such as S-parameter [1,1], gain, radiation pattern, and bandwidth. The return loss of the antenna obtained is -24.79dB. The average gain obtained in the proposed 5G antenna is 7.9 dBi, and the radiation pattern of the antenna is Unidirectional, bandwidth range is 27.36-29.29GHz, with centre frequency 28.108GHz, and four-element array antennas are with merits of average gain of 13.385dBi, bandwidth ranges from 27.29-29.14GHz, centre frequency 28.024GHz. A 5G array antenna of the size 1x4 is designed, which greatly increases the antenna's gain. A Defective ground structure (DGS) is implemented on the ground plane to improve the antenna performance. The DGS is implemented on the ground plane by introducing three Concentric circles, and the antenna's bandwidth is improved using the Concentric circles. The array antenna enhances some antenna characteristics. An edge feeding strategy is used to feed the antenna, and the ANSYS HFSS programme simulates the proposed antenna.