Two New Single-Resistor-Controlled Quadrature Sinusoidal Oscillators using Current-Differencing-Buffered-Amplifiers

J. K. Pathak

doi:https://doi.org/10.51976/ijari.521716

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Two New Single-Resistor-Controlled Quadrature Sinusoidal Oscillators using Current-Differencing-Buffered-Amplifiers

J. K. Pathak

Vol 5 , Issue 2 , April - June 2017 | Pages: 87-94 | Research Paper

https://doi.org/10.51976/ijari.521716

Received: January 25, 2017 | Revised: February 20, 2017 | Accepted: February 28, 2017 | Published Online: June 15, 2017

Author Details ( * ) denotes Corresponding author

1. * J. K. Pathak, Department of Electronoics and Communication Engineering, Delhi Technical Campus (IP University), Greater Noida, Uttar Pradesh, India (pathak.jitender@gmail.com)

Two new single resistor–controlled quadrature oscillator (SRCQO) circuits using only two current differencing buffered amplifiers (CDBAs) as active elements and only three resistors and two capacitors, are presented. First proposed circuit uses all input terminals of the CDBA to exploit full capacity of the CDBAs, offers better sensitivities with respect to active parameters and has wide frequency range of operation. The second proposed circuit provides very good low frequency performance with respect to total harmonic distortion. Separate single resistors can control both oscillation condition and the oscillation frequency of the proposed quadrature oscillator circuits independently. PSPICE simulation results based upon commercially available AD844 ICs, to construct the CDBAs, are included which confirm the practical workability of the new proposed quadrature oscillator circuits.

Keywords

Sinusoidal Oscillators; Quadrature Oscillators; Analog Circuits; Current Mode Circuits.

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