Modelling of multirate switched-capacitor filter using nonlinear programming

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2 Citations (Scopus)


This paper describes a novel approach to the modelling of the multirate switched capacitance (SC) filters using the nonlinear programming with a series of equality constraints. The procedure optimally distributes a limited switched capacitance area in the input branches of individual SC filter, by minimizing the overall capacitor spread while simultaneously achieving a minimum total capacitor area. The optimization algorithm for dimensioning the constraints allows an iterative simulation to carry out the synthesis task, implemented in a sequence two-step design procedure. Compared to the previous design example of SC decimator, the redesign shows that at least 9.2% reduction of the total capacitance area, while maintaining the same frequency responses.

Original languageEnglish
Pages (from-to)215-218
Number of pages4
JournalInternational Journal of Modelling and Simulation
Issue number2
Publication statusPublished - 2008


  • Analogue multirate circuit
  • Modelling and simulation
  • Multirate
  • Nonlinear programming
  • Optimization
  • Switched-capacitor filter


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