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Tunable Universal OTA–C Frequency Filter Design Using Signal–Flow Graphs

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2 Author(s)
Minarcik, M. ; Brno Univ. of Technol., Brno ; Vrba, K.

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.

Published in:

Systems, 2008. ICONS 08. Third International Conference on

Date of Conference:

13-18 April 2008