Simulation and design of Koch fractal CPW antennas

This paper investigates the properties of Koch fractal coplanar waveguide (CPW) antennas. New antenna geometries are proposed. Simulation is performed using HFSS Ansoft software. Results are presented for resonant frequency, bandwidth, return loss, and radiation pattern. Prototypes are fabricated and measured for comparison purpose between simulation and measurements results. Results for rectangular CPW antennas are included as well. The proposed antennas are designed to operate with multiband in the range from 1 GHz to 14 GHz for CPW on FR-4 dielectric substrate layers. Consistency is observed between theoretical and experimental results.