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Current-mode leapfrog ladder filters using CDBAs
Author(s)
Date Issued
January 1, 2002
Type
Conference Paper
Abstract
In this paper, a possible realization of a current differencing buffered amplifier (CDBA) in the low-voltage operation is proposed. A leapfrog simulation of the current-mode ladder network using the CDBA as active circuit building blocks is then introduced. In order to demonstrate that the CDBA considerably simplifies the leapfrog structure of the current-mode ladder filters, a fifth-order Butterworth low-pass filter and a sixth-order Chebyshev bandpass filter which require a minimum of active components will be presented. PSPICE simulation results are employed to verify the correctness of the realization procedure.
Citation
Proceedings IEEE International Symposium on Circuits and Systems, 5, V/60, 2002