Design of Dual-Band Microstrip Linear Array MIMO Antenna With U Slot For 5G Communication System

Abstract

The development of 5G technology is expected to result in high data rate communication, low power consumption and larger network capacity. Microstrip antenna is an antenna that can support 5G technology because it can work at high frequencies but has the disadvantage of producing a small gain and narrow bandwidth. The use of array and MIMO methods can increase the gain value. The addition of the U slot method aims to increase bandwidth and can produce multi-frequency. In this study, the antenna was designed using an epoxy substrate (FR-4) with a rectangular U-slot patch arranged in a 4×2 MIMO array and fabricated. From the simulation results, the return loss parameter (S11) is -12.49 dB, (S12) is -88.17 dB, bandwidth is 610 MHz, gain is 15.70 dB, envelope correlation coefficient is 3.85 × 10-10. and diversity gain of 10 dB. From the fabrication results, two working frequencies are obtained, namely at a frequency of 3.2 GHz and 3.62 GHz with each return loss value (S11) of -25.96 dB and -29.22 dB, (S12) of -48.61 dB and -51.78 dB, bandwidth of 50 MHz. The independence of each antenna is indicated by the envelope correlation coefficient of 6.48 × 10-6 and 1.5 × 10-6, and a diversity gain of 10 dB. This antenna can be recommended as a receiving antenna in 5G communication systems.