A stochastic technique is used in this paper to extract the parameters of three models (Havriliak- Negami, Cole-Cole and Debye models) of the complex relative permittivity of dispersive materials. From the aperture admittance of an open-ended coaxial probe, the complex permittivity is determined by means of a Parti- cle Swarm Optimization (PSO) algorithm. The validity of the proposed technique is proved by the agreement of the results obtained with literature experimental data for methanol. The general character of the procedure makes it applicable to different materials, dielectric relaxation models and measurement techniques.
Extraction of the Complex Permittivity of Dispersive Materials with a Stochastic Optimization Technique / Marcello Artioli; Mauricio D. Perez; Ugo Reggiani; Leonardo Sandrolini. - ELETTRONICO. - (2010), pp. 18-23. (Intervento presentato al convegno The 26th Annual Review of Progress in Applied Computational Electromagnetics - ACES 2010 tenutosi a Tampere, Finland nel April 26 - 29, 2010).
Extraction of the Complex Permittivity of Dispersive Materials with a Stochastic Optimization Technique
ARTIOLI, MARCELLO;PÉREZ CESARETTI, MAURICIO DAVID;REGGIANI, UGO;SANDROLINI, LEONARDO
2010
Abstract
A stochastic technique is used in this paper to extract the parameters of three models (Havriliak- Negami, Cole-Cole and Debye models) of the complex relative permittivity of dispersive materials. From the aperture admittance of an open-ended coaxial probe, the complex permittivity is determined by means of a Parti- cle Swarm Optimization (PSO) algorithm. The validity of the proposed technique is proved by the agreement of the results obtained with literature experimental data for methanol. The general character of the procedure makes it applicable to different materials, dielectric relaxation models and measurement techniques.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
