Bank of new schemes of active RC-filters of the Sallen-Key subclass with
independent tuning of the main parameters
Abstract
A new subclass of Sallen-Key RC-filters with independent adjustment of
the main parameters, which are implemented on voltage followers (buffer
and operational amplifiers), has been studied. Low- and high-pass
filters, band-pass and notch filters are offered, which have the ability
to independently adjust the pole frequency, pole quality factor and
transmission coefficient with different resistors. Their computer
simulation was carried out in the Micro-Cap environment, the
amplitude-frequency and phase-frequency characteristics were obtained in
the tuning mode using the models of buffer and operational amplifiers
built into the Micro-Cap.