A modified small-size tapered monopole antenna for UWB applications designed by genetic algorithm

Abstract

In this paper, a modified small-size tapered monopole antenna is optimized for ultra wideband applications. Our optimization procedure aims at finding an antenna not only with low VSWR, but also miniaturizing the antenna at the same time. In addition, since in UWB communication pulse distortion between the receiver and the transmitter is very crucial the impulse responses of the designed antennae were considered. The optimization technique proposed here is a real-coded compact genetic algorithm, RCCGA, based on the probability density function of each variable. The final design of the antenna works from 3.1 to 11.7 GHz with 48% lower area compared to previous work.