Dual-Band Microstrip Patch Antenna Design For Wi-Fi Applications

Abstract

In this paper, a microstrip patch antenna working at 2.4 GHz and 5.8 GHz frequencies is designed for use in Wi-Fi applications. The main purpose of the research is to design a compact, easy manufacture, and high-performance microstrip patch antenna. In the antenna, there is a patch with three slots on it as a conductor and the FR-4 substrate under it. Copper is preferred as a conductor in the patch and ground parts of the antenna. The overall dimensions of the antenna are 50 x 50 x 1.6 mm3. Three rectangular slots were opened in the patch part of the antenna for the antenna to work in the dual-band range. In addition, 50 Ω microstrip feed is used in the antenna. The antenna resonates at 2.41 GHz and 5.8 GHz frequencies. The antennas bandwidth values in the lower (2.4 GHz) and upper bands (5.8 GHz) are 53.6 MHz and 200.4 MHz, respectively. The VSWR values obtained are 1.49 for the 2.41 GHz resonant frequency and 1.08 for the 5.8 GHz resonant frequency, respectively. The directivity graph and radiation properties of the antenna show that the antenna has the desired radiation characteristics. The design of the antenna was made using CST Studio Suite 2020 software.