Generalized analysis of high-order switch-RCN -path mixers/filters using the adjoint network

Shanthi Pavan, Eric A.M. Klumperink

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Abstract

This paper presents a systematic method to analyze N-path mixers and filters consisting of periodically switched RCnetworks of arbitrary order. It is assumed that each capacitor periodically exchanges charge with the rest of the network during the on-phase of the switching clock, then samples its charge, and holds it perfectly until the next on-phase. This assumption allows for using the adjoint network for simplified analysis of the harmonic transfer functions that describe the signal transfer and folding. Moreover, harmonic transfer cancellations due to the N-path implementation with N equal capacitors switched by N non-overlapping clocks are systematically analyzed. The method is applied to a recently published N-path filter-mixer combination and verified by simulations.
Original languageEnglish
Pages (from-to)3267-3278
Number of pages12
JournalIEEE transactions on circuits and systems I: regular papers
Volume65
Issue number10
DOIs
Publication statusPublished - 1 Oct 2018

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Clocks
Switched filters
Capacitors
Switches
Harmonic functions
Mixer circuits
Transfer functions

Keywords

  • Switches
  • Capacitors
  • Mixers
  • Switching circuits
  • Bandwidth
  • Transfer functions
  • Radio frequency

Cite this

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title = "Generalized analysis of high-order switch-RCN -path mixers/filters using the adjoint network",
abstract = "This paper presents a systematic method to analyze N-path mixers and filters consisting of periodically switched RCnetworks of arbitrary order. It is assumed that each capacitor periodically exchanges charge with the rest of the network during the on-phase of the switching clock, then samples its charge, and holds it perfectly until the next on-phase. This assumption allows for using the adjoint network for simplified analysis of the harmonic transfer functions that describe the signal transfer and folding. Moreover, harmonic transfer cancellations due to the N-path implementation with N equal capacitors switched by N non-overlapping clocks are systematically analyzed. The method is applied to a recently published N-path filter-mixer combination and verified by simulations.",
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Generalized analysis of high-order switch-RCN -path mixers/filters using the adjoint network. / Pavan, Shanthi; Klumperink, Eric A.M.

In: IEEE transactions on circuits and systems I: regular papers, Vol. 65, No. 10, 01.10.2018, p. 3267-3278.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Klumperink, Eric A.M.

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KW - Switches

KW - Capacitors

KW - Mixers

KW - Switching circuits

KW - Bandwidth

KW - Transfer functions

KW - Radio frequency

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