Simulation and Performance of a Fractal Microstrip Antenna on the Influence of EBG to ISM Band Application

Abstract

in this paper, the project of a fractal antenna is proposed, based on the Cantor sequence in microstrip antenna operating at the projected central frequency at 2.45 GHz and application in ISM Band 2.4 GHz. The use of fractal geometry implies miniaturizing the physical dimensions of the antenna without altering its bandwidth or gain, and to enhance these characteristics it’s proposed to insert structures EBG (Electromagnetic Bandgap). Simulations were carried out with the HFSSO (High Frequency Structural Simulator), to obtain radiation pattern, reflection coefficient, bandwidth, gain and axial ratio. The methods presented in this paper were validated for the development of the radiation parameters, being the device that resulted the best impedance matching with reflection coefficient at -31dB, was the structure EBG 8x8 spaced at 6mm distance to reference antenna.