Title :
An electronically adjustable bandpass filter
Author :
Hall, Jefferson W. ; Connelly, J.Alvin
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
An electronically adjustable bandpass filter based on the state-variable configuration is developed such that independent control of center frequency, quality factor, and gain is achieved. Electronic tuning of these parameters is accomplished with operational transconductance amplifiers is subcircuits which simulate floating resistors. Linearity of center frequency versus control input and relative independence are demonstrated for a wide input dynamic range
Keywords :
Q-factor; active filters; band-pass filters; operational amplifiers; tuning; OTA; bandpass filter; center frequency; electronic tuning; electronically adjustable; floating resistor simulation; gain; independent control; op amp; operational transconductance amplifiers; quality factor; state-variable configuration; Active filters; Band pass filters; Dynamic range; Frequency; Potentiometers; Q factor; Resistors; Transconductance; Tunable circuits and devices; Voltage control;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271175
