State-Variable Models of Multifunctional Filters in Current Mode

T. Dostal and M. Sigmund (Czech Republic)


Modelling, active filter, current mode.


Universal multifunctional (low-pass, high-pass, band pass, band-reject and all-pass) nth-order active RC filters in the current mode are presented in this paper. The filters are based on given state-variable models in the form of signal flow graphs. Multi-loop feedback state-variable structures are transformed into the current mode and modified to be easily implemented using multi-output transconductors and current conveyors.

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