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Automatic tuning of frequency and Q-factor of bandpass filters based on envelope detection

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2 Author(s)
Karsilayan, A.I. ; Dept. of Electr. Eng., Portland State Univ., OR, USA ; Schaumann, R.

The paper discusses an approach using very simple tuning circuitry based on the envelope detection method. A second-order bandpass filter is used as a demonstration vehicle. The complete tuning circuit consists of frequency and Q-factor tuning blocks, and operates on a 3 V power supply. Due to its simplicity, this method can be used for automatic tuning of high-Q bandpass filters at very high frequencies with very little circuit overhead

Published in:

Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on  (Volume:1 )

Date of Conference:

31 May-3 Jun 1998

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