Title :
Tunable Universal OTA–C Frequency Filter Design Using Signal–Flow Graphs
Author :
Minarcik, M. ; Vrba, K.
Author_Institution :
Brno Univ. of Technol., Brno
Abstract :
This article deals with OTA-C frequency filter design using the Mason-Coates signal-flow graphs. The procedure of universal circuit design that can realize low-pass, high-pass, band-pass, band-rejection and all-pass frequency filters working in the current mode as well in the voltage mode is shown. The cut-off frequency and quality factor of the frequency filters can be controlled independently. Controlling the circuit is realized by changing the transconductance of the OTA amplifiers used.
Keywords :
Q-factor; all-pass filters; band-pass filters; band-stop filters; circuit tuning; high-pass filters; operational amplifiers; signal flow graphs; Mason-Coates signal-flow graphs; OTA amplifiers; all-pass frequency filters; band-pass filter; band-rejection filter; current mode filter; cut-off frequency; high-pass filter; low-pass filter; quality factor; tunable universal OTA-C frequency filter; voltage mode filter; Equations; Filters; Flow graphs; Frequency; Q factor; Signal design; Signal processing; Transconductance; Tunable circuits and devices; Voltage; OTA–C frequency filter; universal filter;
Conference_Titel :
Systems, 2008. ICONS 08. Third International Conference on
Conference_Location :
Cancun
Print_ISBN :
978-0-7695-3105-2
Electronic_ISBN :
978-0-7695-3105-2
DOI :
10.1109/ICONS.2008.40
