Dual Band Meandered Fed Circular Microstrip Patch Antenna

Abstract

A technique to attain dual band response of Circular Microstrip Patch Antenna (CMPA) is proposed. Meandered microstrip feeding with defected ground planes is utilized. The dielectric substrate material deployed is FR4 with a dimension of 51mm x 41mm and a total thickness of 2mm. This antenna resonates at 2.45GHz and 5.86GHz frequencies. This antenna's parametric study was conducted in terms of scattering parameter(S11), VSWR, 2D Radiation Pattern, Surface current distribution and its Gain. With the help of ANSYS Electronic Desktop 2019 R3, the impedance bandwidth is 30.61 % and 10.92%, respectively, with maximum gains of 1.6dBi and 3.5dBi in the lower and upper frequency bands. The proposed antenna could be useful for ISM, UHF RFID, WLAN, and other wireless networks.