Digital tuning of analog bandpass filters based on envelope detection Conference Paper uri icon


  • A digital automatic tuning technique for analog high-Q bandpass filters is proposed. The technique is based on envelope detection and magnitude comparison at three reference frequencies. The digital approach provides reliability with more robust control of frequency and Q tuning by enabling only one loop at a time. Accurate tuning is achieved since the scheme does not assume a direct relation between the passband gain and Q factor of filter.

author list (cited authors)

  • Sumesaglam, T., Karsilayan, A. I., & IEEE, ..

publication date

  • September 2004