Implementing ferrites in finite-difference time-domain (FDTD) modeling requires special care because of the complex nature of the ferrite impedance. Considerable computational resources and time are required to directly implement a ferrite in the FDTD method. Fitting the ferrite impedance to an exponential series with the generalized-pencil-of-function (GPOF) method and using recursive convolution is an approach that minimizes the additional computational burden. An FDTD algorithm for a lumped ferrite using GPOF and recursive convolution is presented herein. Two different ferrite impedances in a test enclosure were studied experimentally to demonstrate the FDTD modeling approach. The agreement is generally good.
M. Li et al., "FDTD Modeling of Lumped Ferrites," IEEE Transactions on Electromagnetic Compatibility, vol. 42, no. 2, pp. 142-151, Institute of Electrical and Electronics Engineers (IEEE), May 2000.
The definitive version is available at http://dx.doi.org/10.1109/15.852408
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
EMC; FDTD Algorithm; FDTD Modeling; Convolution; Electric Impedance; Electromagnetic Compatibility; Electromagnetic Shielding; Exponential Series; Ferrite Impedance; Ferrites; Finite Difference Time-Domain Analysis; Finite-Difference Time-Domain; Generalized-Pencil-Of-Function (GPOF) Method; Lumped Ferrites; Recursive Convolution; Shielding Enclosure; Test Enclosure; Algorithms; Computational Methods; Electric Impedance; Finite Difference Method; Mathematical Models; Time Domain Analysis
International Standard Serial Number (ISSN)
Article - Journal
© 2000 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.