Design of a small ultra wideband antenna using a genetic algorithm approach

Abstract

This paper addresses the design and optimisation of a physically small and cost effective printed antenna for full-band UWB radio applications. A genetic algorithm assisted optimisation is used to achieve the physical dimensioning and full-band operation. The antenna is realized as a printed slot cut radiator fixed over a trapezoidal ground plane, the antenna dimensions are 21.6mm × 18.8mm × 1.6mm. The prototype antenna performance is in line with the FCC regulations, with an impedance bandwidth of 10 dB or better across the 2.1GHz - 13.2GHz frequency range, and a suitable omni-directional radiation pattern.