CST – Computer Simulation Technology

Title:
Characterization of Relative Complex Permittivity and Permeability for Magneto-Dielectric Sheets
Author(s):
Ahmad Hosseinbeig, Shubhankar Marathe and David Pommerenke
Source:
IEEE Transactions on Electromagnetic compatibility
Vol./Issue/Date:
1st January 0001
Year:
2018
Page(s):
1-9
Keywords:
Dispersion model, ferrite, material characterization, optimization, permeability, permittivity
Abstract:
A new method is developed to extract relative complex permittivity and permeability of magneto-dielectric sheets. Two test fixtures are used to separately extract electric and magnetic properties of the material under test (MUT). The unknown parameters corresponding to dispersion models of the complex permittivity and permeability of the magneto-dielectric sheet are optimized by comparing the measured |S21 | of the test fixtures containing the MUT with the |S21 | obtained from full-wave simulation. CST Microwave Studio is used to perform the simulations and optimization. The method is verified and the extracted electromagnetic properties of two ferrite sheet samples are presented. Also, the uncertainty of the system due to air gaps in the test fixtures is investigated.
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