Theta Slotted Circular Multiband Patch Antenna Design and Analysis for mm-Wave 5G Communication System

Recently, the most enriching and establishing topic is 5G network that is being used for communication in both industrialized and developing countries, because of the high data transmission rate. As high data rate transmission over large areas has become essential, achieving appropriate bandwidth, return loss, and efficiency is crucial. To meet these requirements, this work presents a theta slotted circular patch antenna designed using CST Studio Suite Software for millimeter-wave 5G communication. The antenna's structural dimensions are 10mm x 10mm, and Taconic RF-60A substrate material is used alongside a thickness of 0.787mm. The output of the proposed antenna covers the multiband frequencies such as 32.7 GHz, 40.5 GHz and 50.1 GHz with respective return loss of −24.26 dB, −16.24 dB and −41.22 dB. The design achieved a maximum bandwidth of 7.74 GHz and 9.99 GHz at the resonant frequencies of 32.7 GHz and 50.1 GHz. After calculating the gain and the directivity we got 71.5% and 76% efficiencies at the resonant frequencies of 32.7 GHz and 50.1 GHz. According to the analysis of these performance metrics, it can be inferred that the modeled theta slotted circular patch antenna presents itself as an optimal choice for the millimeter-wave fifth generation (5G) communications.