Defected Ground Structure (DGS) based Miniaturization of a single Circular Patch Antenna for 5G Mobile Applications

• Published in: 2020 28th Signal Processing and Communications Applications Conference (SIU) pp. 1 - 4
• Main Authors: Assoumana, Adramane, Cakir, Gonca
• Format: Conference Proceeding
• Language: English
• Published: IEEE 05.10.2020
• Subjects: 5G mobile communication; Antennas; Circular patch antenna; Defected Ground Structure (DGS); Microstrip; Microstrip antennas; Microwave antennas; Miniaturization; Patch antennas; Reflection coefficient
• DOI: 10.1109/SIU49456.2020.9302240

This paper is intended for a Defected Ground Structure (DGS) based miniaturization of a circular patch antenna for 5G mobile applications. From a standard circular patch antenna radiating at 3.6GHz, it was possible to obtain 50 and 70% size reduction by the help of DGS. As a result, 75 and 91% area shrinkage were achieved respectively. The antenna is made of 0.762 mm thick Arlon DiClad 880 substrate with 2.2 relative permittivity and a 60×60×0.035 mm3 metallic ground plane. All simulations were performed using CST Studio Suite. The achieved gains are as follows: 8.69dB for the standard antenna, 5.17 and 2.41dB for 75 and 91% reduced area antennas respectively. The reflection coefficients are −40.03dB and −32.85dB for 75 and 91 % reduced area antenna respectively, while the standard antenna's reflection coefficient is −46.59dB. The obtained efficiencies are 91% for reference antenna, 99% and 95% for 75 and 91% reduced area antennas respectively. The miniaturized antennas provide a desirable bandwidth, covering 3.4-3.8 GHz band, suitable for 5G mobile communication.