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A digital approach for automatic tuning of continuous-time high-q filters
- Source :
- IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing. 50:755-761
- Publication Year :
- 2003
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2003.
-
Abstract
- A digital scheme for automatic tuning of continuous-time high-Q filters is proposed. The tuning scheme uses the phase information for both frequency and Q-factor tuning, therefore, the relationship between the filter's passband magnitude and Q is immaterial. Due to the digital control of the tuning loops, only one loop is active at a given time interval, which eliminates the need for a slow Q tuning loop, improves stability and reduces tuning time. Experimental breadboard tests verify the operation where approximately 1% tuning error is accomplished using the offline tuning algorithm.
Details
- ISSN :
- 10577130
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
- Accession number :
- edsair.doi...........24c052a98872028c87d598b0e4ffc351