Fourier analysis of complex impedance (amplitude and phase) in nonlinear systems: A case study of diodes

Research output: Contribution to journalArticle

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Abstract

The general framework of Fourier analysis of complex impedance including both the amplitude and phase information is presented. For the single frequency sine/cosine input, Fast Fourier Transform can be used to obtain the amplitude and phase of the harmonics in the output signal. Complex nonlinear least squares fitting can then be applied to correlate the experimental and calculated results as in conventional impedance spectroscopy. General purpose p-n junction diodes were used as model systems to test the method as well as to compare it to other means of analysis.

LanguageEnglish (US)
Pages5511-5518
Number of pages8
JournalElectrochimica Acta
Volume55
Issue number19
DOIs
StatePublished - Jul 30 2010

Profile

Fourier analysis
Fast Fourier transforms
Nonlinear systems
Diodes
Spectroscopy

Keywords

  • Complex impedance
  • Fourier analysis
  • Frequency response analysis
  • Harmonic analysis
  • Nonlinear system

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

Fourier analysis of complex impedance (amplitude and phase) in nonlinear systems : A case study of diodes. / Lai, Wei.

In: Electrochimica Acta, Vol. 55, No. 19, 30.07.2010, p. 5511-5518.

Research output: Contribution to journalArticle

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