Summary
International Symposium on Antennas and Propagation
2006
Session Number:1C2b
Session:
Number:1C2b-4
Analyses of Nonlinearly Loaded Antennas and Antenna Arrays Using Particle Swarm Algorithm
Kun-Chou Lee,
pp.1-6
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
In this paper, the particle swarm algorithm is applied to the analysis of nonlinearly loaded antennas and antenna arrays. In most cases, the particle swarm algorithm is utilized for optimization problem. However, the particle swarm algorithm is utilized in this study for analyzing a nonlinear electromagnetic problem, but not for optimization. Initially, the scattering of nonlinear loaded antennas is viewed as an equivalent microwave circuit with the circuit parameters representing the antenna structure, incident wave and nonlinear load. The analysis of this equivalent microwave circuit is then transformed into the optimization of a scalar fitness function to which the particle swarm algorithm can be applied. Numerical examples show that the results calculated in this study are consistent with those given by other existing studies. The analysis of such a nonlinear problem using the particle swarm algorithm is very straightforward and is found to be more efficient than other stochastic approaches. Therefore, it can also be applied to the analyses of many other nonlinear problems in electromagnetic waves.