Title :
Equivalent Circuit Modeling of Broadband Antennas using Vector Fitting and Particle Swarm Optimization
Author :
Kim, Youngwook ; Ling, Hao
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX
Abstract :
In this paper, the vector fitting was introduced for the robust rational function approximation of broadband antennas. The constrained PSO was then proposed to optimize the sample locations to find the best passive rational function model. The application of the technique to two broadband antennas resulted in RMS errors of 4% and 1%, respectively. However, the method does not guarantee that a passive function can always be found, even though the technique is very successful in all of the antennas tried so far
Keywords :
broadband antennas; equivalent circuits; function approximation; particle swarm optimisation; RMS errors; broadband antennas; constrained PSO; equivalent circuit modeling; particle swarm optimization; passive function; passive rational function model; robust rational function approximation; vector fitting; Approximation algorithms; Broadband antennas; Equivalent circuits; Frequency; Function approximation; Impedance; Particle swarm optimization; Physics; Robustness; Solid modeling;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711386
