New Current Mode Multi-Function Filter and Single-Resistance-Controlled Oscillator Employing VDCC and Only Grounded Passive Components

This paper proposes a current mode low input and high output impedance multi-function filter and a sinusoidal quadrature oscillator, both employing two Voltage Differencing Current Conveyors (VDCC) as active elements along with four grounded passive components. Availability of high pass, band pass and low pass filter functions along with independent tunability of its quality factor are the available feature of the designed active filter. By applying some simple modifications in circuit hardware filter network converts into a current/voltage mode single resistance-controlled oscillator (SRCO) circuit. Explicit current outputs, simple and independent oscillation and frequency condition are the paramount features of the derived quadrature oscillator. The validity of both the derived circuits have been performed using pen-paper as well as with software simulations.