Slots Loaded Multilayered Circular Patch Antenna for Wi-Fi/WLAN Applications

Abstract

In the present work, a circular dual-band patch antenna structure with four rectangular slots is proposed and fabricated for wireless applications. The performance of patch antenna has been analyzed in terms of antenna parameters return loss, VSWR, radiation pattern, and gain. A maximum gain of 3.93 dB at lower resonant frequency of 3.71 GHz and a gain of 3.09 dB at upper resonant frequency of 5.51 GHz are achieved. E-field beam width of 230° and 205° and H-field beam width of 250° and 165° are observed for lower and upper resonance frequencies at −3 dB. The experimental results of return loss and VSWR of the proposed structure are presented along with the simulated results.