Analysis of instability in feedforward loop

PB Kenington, PA Warr, RJ Wilkinson

Research output: Contribution to journalArticle (Academic Journal)peer-review

4 Citations (Scopus)


Although the feedforward system is theoretically unconditionally stable, there are circumstances under which oscillation can occur. These oscillations are possible in both the error-determining loop and the error-cancellation loop and may occur in-band or out-of-band depending upon the parameters of the design. The authors analyse the circumstances under which oscillation is possible, and highlight the corrective action which may be taken in order to eliminate the possibility of its occurrence
Translated title of the contributionAnalysis of instability in feedforward loop
Original languageEnglish
Pages (from-to)1669 - 1671
JournalElectronics Letters
Issue number20
Publication statusPublished - Sept 1997

Bibliographical note

Publisher: Institution of Electrical Engineers (IEE)
Rose publication type: Journal article

Sponsorship: The authors are grateful to J.P. McGeehan for
the provision of laboratory facilities and to M. Beach for helpful comments during the work. The authors are also grateful to the
following organisations for funding in support of the work: DERA, EPSRC and the European Commission


  • circuit oscillations
  • circuit stability
  • feedforward
  • radiofrequency amplifiers


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