Genetic-algorithm optimization of dipole equivalent-circuit models

In this paper, we nse a genetic-algorithm (GA) technique to optimize equiva lent-circuit models of an antenna system. Two broadband equivalent-circuit models with component values are optimized by use of the generic algorithm. The first is a conventional RLC network, while the second introduces a new technique that makes use of transmission-line segments ns well as lumped c omponents. Both equivalent circuits exhibit good impedance fidelity over a bandwidth exceeding five octaves, including the fundamental through the fou rth overtone response. (C) 2000 John Wiley & Sons, Inc.