Design and Analysis of a Metamaterial based Tri band Second Iterative Compact Fractal Antenna for L, S and C Band Applications

Abstract

In this paper, the design of a Compact Fractal antenna with only two iteration with the help of metamaterials is designed. The overall size of the antennas is only of 35×35×1.6mm the dielectric substrate used is Rogers RT/Duroid 5880 with dielectric constant 2.2. The first and second iteration of fractal geometry are designed based closed loop wire antenna model and the metamaterial incorporated here is a dual bent inter digital capacitance based metamaterial which gives combinations of inductance and capacitance variations to effectively manipulate the electromagnetic waves that interacts with it. The tuning of this metamaterial structure will provide tuning antenna to variety range of operating frequencies and also provide reconfigurable radiation. The proposed metamaterial based fractal antenna works at multiple bands around 2, 2.2 & 4.5GHz bands covering L, S, and C bands. The comparative analysis of first and second iterative fractal antenna with proposed metamaterial is presented with the help of return loss, current distribution, radiation pattern, efficiency and other antenna parameters.