Ferrite material Characterization Using S-Parameters Data

Document Type: Research Paper

Authors

Electrical and Electronic Department , Malek Ashtar University of Technology, Tehran, Iran

Abstract

ince many applications rely on the knowledge of the electromagnetic
material properties of ferrites, such as ferrite phase shifters, this paper
presents an algorithm for characterizing ferrite materials in a single
frequency using a rectangular waveguide system. In this method, the
extraction of ferrite parameters is implemented through minimizing the
difference between the measured data and the results from modal
analysis of the system. The main advantage of this method compared to
the other ones is that the proposed method only needs the amplitude of
the reflection and transmission coefficients to estimate the parameters of
ferrite materials. This makes the implementation easy and eliminates the
problems associated with phase calibrations and measurements. This
validation is achieved by simulation and experimental tests. The
proposed algorithm is validated by characterizing YIG and SL-470
ferrites.

Keywords


[1] A. Bogle, M. Havrilla, D. Nyquis, L. Kempel, and E. Rothwell, “Electromagnetic material characterization using a partiallyfilled rectangular waveguide,” Journal of Electromagnetic Waves and Applications, vol. 19, no. 10, pp. 1291–1306, 2005.

[2] P. Queffelec, M. Le Floc’h, and P. Gelin, “Non-reciprocal cell for the broad-band measurement of tensorial permeability of magnetized ferrites: Direct problem,” IEEE Transactions on Microwave Theory Technology, vol. 47, no. 4, pp. 390–397, Apr. 1999.

[3] S. Ramo, J. R. Whinnery, and T. Van Duzer, Fields and Waves in Communications Electronics, 3rd ed., John Wiley & Sons, New York, 1994.

[4] A. S. Omar and K. F. Schinemann, “Complex and backwardwave modes in inhomogeneously and anisotropically filled waveguides,” IEEE Transactions on Microwave Theory and Technology, vol. 35, no. 3, pp. 268-275, Mar. 1987.

[5] A. Verma, A.K. Saxena, and D.C. Dube, “Microwave permittivity and permeability of ferrite-polymer thick films,” Journal of Magn. Mater., vol. 6, no. 263, pp 228–234, 2003.

[6] O. Hashimoto and Y. Shimizu, “Reflecting characteristics of anisotropic rubber sheets and measurement of complex permittivity tensor,” IEEE Trans. Microwave Theory Tech., vol. mtt-34, no. 11, pp. 1202–1207, Nov. 1986.

[7] P.I. Dankov, “Two-resonator method for measurements of dielectric anisotropy in multilayer samples,” IEEE Trans. Microwave Theory Tech., vol. 54, no. 4, pp. 1534–1544, April 2006.

[8] M.R.A. Fenner, E.J. Rothwell, and L. Frasch, “A comprehensive analysis of freespace and guided-wave techniques for extracting the permeability and permittivity of materials using reflection-only measurements,” Radio Science, vol. 47, pp. 1004–1016, Jan. 2013.

[9] M.M. Scott, and D.L. Faircloth, “Microwave permittivity determination for materials with out-of-plane and diagonal

dielectric anisotropy,” IEEE Trans. Microw. Theory Tech., vol. 61, no. 6, pp. 2471–2480, Jun. 2014.

[10] T.W. Kim, B.Y. Park, and S. Y. Park, “Calculation of magnetization and permeability tensor of a partially magnetized cylindrical ferrite resonator,” IEEE Magnetics Letters, vol. 7, Feb. 2016.

[11] S.K. Koul and B. Bharathi, Microwave and Millimeter Wave Phase Shifters. vol. 1, Boston and London: Artech House, 1991.

[12] Ferrite –Domain.com/Products.