Fast Numerical Method for Computing Resonant Characteristics of Electromagnetic Devices Based on Finite-Element Method

Xiu Zhang, Xin Zhang, Weinong Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


The traditional method to obtain the response of electromagnetic devices over a wide frequency range is to use a frequency sweeping method. However, this method is very time consuming, especially in the time-domain analysis. In order to save the heavy computational time, a novel fast algorithm based on the finite-element method (FEM) to obtain the response under different frequencies is therefore proposed. With this proposed method, the FEM just needs to be solved once under a specific excitation function, and the frequency-domain responses at different frequencies are calculated using a simple integral formula. In this paper, a simple RLC circuit and a planar spiral coil are used to showcase this method. The results indicate that this method can obtain the resonant frequency of the system precisely with significant savings in computation time.
Original languageEnglish
Article number7815402
JournalIEEE Transactions on Magnetics
Issue number6
Publication statusPublished - 1 Jun 2017


  • Finite-element method (FEM)
  • frequency sweeping
  • resonant frequency
  • time domain

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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