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Extraction of Permittivity and Permeability for Ferrites and Flexible Magnetodielectric Materials using a Genetic Algorithm
IEEE Transactions on Electromagnetic Compatibility
  • Shenhui Jing
  • Yaojiang Zhang, Missouri University of Science and Technology
  • Jing Li
  • Dazhao Liu
  • Marina Y. Koledintseva, Missouri University of Science and Technology
  • David Pommerenke, Missouri University of Science and Technology
  • Jun Fan, Missouri University of Science and Technology
  • James L. Drewniak, Missouri University of Science and Technology
Abstract
A hybrid approach, based on the two-dimensional finite-element method (2-D-FEM) and a genetic algorithm (GA) optimization, is used to extract relative permittivity and permeability of ferrites and flexible magnetodielectric composite materials over wide frequency bands. S-parameters of a material under test (MUT) placed into a coaxial fixture are measured by a vector network analyzer and simulated using the 2-D-FEM code. The GA optimization procedure is then used to minimize the discrepancies between the measured and simulated S-parameters by iteratively searching the possible best permittivity and permeability. Multiterm Debye models of wideband complex permittivity and permeability are employed here for a frequency-dispersive MUT. This greatly reduces the number of unknowns in the GA optimization. The proposed method is tested with PTFE and a virtual magnetic material.
Department(s)
Electrical and Computer Engineering
Research Center/Lab(s)
Center for High Performance Computing Research
Keywords and Phrases
  • Algorithms,
  • Complex networks,
  • Electric network analyzers,
  • Ferrite,
  • Ferrites,
  • Frequency bands,
  • Genetic algorithms,
  • Gyrators,
  • Hybrid materials,
  • Iterative methods,
  • Magnetic materials,
  • Permittivity,
  • Scattering parameters,
  • Complex permittivity and permeabilities,
  • Dispersive media,
  • Genetic-algorithm optimizations,
  • Magneto-dielectric composites,
  • Magnetodielectric materials,
  • Relative permittivity and permeability,
  • Two dimensional finite element method,
  • Vector network analyzers,
  • Finite element method
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2015 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
6-1-2015
Citation Information
Shenhui Jing, Yaojiang Zhang, Jing Li, Dazhao Liu, et al.. "Extraction of Permittivity and Permeability for Ferrites and Flexible Magnetodielectric Materials using a Genetic Algorithm" IEEE Transactions on Electromagnetic Compatibility Vol. 57 Iss. 3 (2015) p. 349 - 356 ISSN: 0018-9375
Available at: http://works.bepress.com/david-pommerenke/107/