Quasi-static numerical modeling of miniature RF circuits based on lumped equivalent circuits

Hongliang Li, Jian Ming Jin, Doug Jachowski, Richard Silver, Robert Hammond

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A quasi-static approach based on lumped equivalent circuits is presented and investigated for an efficient numerical analysis of miniature RF circuits. In this approach, the static capacitances and inductances including mutual capacitances and inductances of individual circuit components are first evaluated using the finite element method. An equivalent lumped circuit based on the calculated capacitances and inductances is then constructed for the entire circuit, whose analysis predicts the frequency responses of the circuit. The accuracy of this quasi-static approach is investigated by comparing its solution with that of the full-wave analysis based on Maxwell's equations. It is found that the quasi-static analysis is very accurate for a miniature RF circuit whose electrical size is smaller than a fraction of the effective wavelength.

Original languageEnglish (US)
Article numbere2795
JournalInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields
Issue number1
StatePublished - Jan 1 2021
Externally publishedYes


  • finite element method
  • lumped equivalent circuit model
  • miniature RF circuits
  • quasi-static analysis

ASJC Scopus subject areas

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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