Design of Microstrip Array Antenna with Beamforming Capability for 5G Communication

Authors

  • Adam Tsany Magrifaghibran Faculty of Electrical Engineering, Telkom University, Bandung - INDONESIA
  • Dharu Arseno Faculty of Electrical Engineering, Telkom University, Bandung - INDONESIA
  • Rizky Satria Faculty of Electrical Engineering, Telkom University, Bandung - INDONESIA

Keywords:

5G Technology,, Antenna, Microstrip, Array, Beamforming

Abstract

The fifth generation technology (5G) is a wireless network technology that offers access at very high data rates and greater capacity. One important element in realizing 5G technology is the antenna. Antennas with beamforming capabilities are one of the keys to 5G technology. Beamforming itself is an antenna's ability to direct the radiation patterns produced with certain characteristics. Based on previous research, antennas with beamforming capabilities can produce higher gain and wider bandwidth. In that study, antennas with high gain cause the value of SINR to increase, so that the resulting throughput is also higher. One type of antenna that can be used for 5G technology is a microstrip antenna. However, microstrip antennas have several disadvantages, including bandwidth and small gain. At present, the 28 GHz frequency is the most developed 5G frequency candidate. In this research, a microstrip antenna designed with beamforming capability can work at a frequency of 28 GHz. The antenna designed is an 8×8 MIMO array antenna arranged linearly. An array of antennas is carried out in order to increase the antenna gain. The antenna that has been designed is then performed beamforming simulation. The beamforming simulation is done by adjusting the phase difference at each antenna excitation. The desired beam characteristic is that it can point to 60 degrees with a beam width ≤ 30 degrees. The simulation results show that the antenna is able to work in the frequency range of 27.07 GHz - 28.77 GHz at a return loss limit of less than -10 dB with a bandwidth of 1.7 GHz and a gain value of 20.1 dB. Meanwhile, the beamforming simulation results by providing a relative phase difference between excitation of 45 degrees and 90 degrees, resulting in a radiation pattern with a beam characteristic approaching as desired. Setting the phase difference between excitation by 45 degrees produces a beam that leads to 61 degrees, with a beam width of 34.4 degrees. Meanwhile, the phase difference setting between excitation of 90 degrees produces a beam that leads to 64 degrees, with a beam width of 35.8 degrees.

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Published

2021-04-22

Issue

Section

FoITIC 2020