Joan Domingo received a BSc in electrical engineering and an MSc in electronics engineering from the Technical University of Catalonia (UPC) and a PhD in electronics from Barcelona University (UB), both in Barcelona, Spain. He is an associate professor assigned to the Systems Engineering, Automation and Industrial Informatics (ESAII) Department at UPC. Email address: joan.domingo@upc.es
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July 7, 2005[Ideas For Design] Bandpass Filter With Adjustable Q Has Constant Maximum Gain
Some applications, such as audio equalizers, require bandpass filters with a constant maximum gain, independent of the selected quality factor Q. But in a lot of well-known filter structures—such as Sallen-Key, MFB, state variable, and Tow-Thomas—when you adjust the quality factor of the second-order cells, the maximum gain changes...
