Genetic-algorithm optimization of dipole equivalent-circuit models

In this paper, we use a genetic-algorithm (GA) technique to optimize equivalent-circuit models of an antenna system. Two broad-band equivalent-circuit models with component values are optimized by use of the genetic algorithm. The first is a conventional RLC network, while the second introduces a new technique that makes use of transmission-line segments as well as lumped components. Both equivalent circuits exhibit good impedance fidelity over a bandwidth exceeding five octaves, including the fundamental through the fourth overtone response.