Miniaturized Microstrip Patch Antenna Design using Metamaterial

In this paper, a miniaturized circular patch antenna with two split ring slots is designed using a metamaterial substrate. The proposed antenna is resonating at 2.4 GHz frequency. Initially, a simple circular patch antenna is designed using FR4 epoxy substrate resonating at 2.4 GHz. However, the dimension of the antenna is large. The antenna dimension is significantly reduced using a metamaterial substrate and two split ring slots. There is a 70.86 % reduction in the patch surface area and a 52.53 % reduction in the volume of the antenna as compared to the initial antenna. The proposed antenna is simulated using ANSYS HFSS software. The antenna has an S
₁₁
value of -20.32 dB and a substantial gain of 3.62 dB. It has an excellent radiation efficiency of 99.9%. The proposed antenna is suitable for Wi-fi, WLAN, Bluetooth, etc. applications.