Operational transresistance amplifier-based multiphase sinusoidal oscillators

Authors:
Rajeshwari Pandey;Neeta Pandey;Mayank Bothra;Sajal K. Paul
Affiliations:
Department of Electronics and Communication Engineering, Delhi Technological University, Delhi, India;Department of Electronics and Communication Engineering, Delhi Technological University, Delhi, India;Kritikal Solutions Pvt. Ltd., Noida, UP, India;Department of Electronics Engineering, Indian School of Mines, Dhanbad, India
Venue:
Journal of Electrical and Computer Engineering
Year:
2011

Citing 2
Cited 1

A Novel Single-Resistance-Controlled Sinusoidal Oscillator Employing Single Operational Transresistance Amplifier

Analog Integrated Circuits and Signal Processing
Microelectronic Circuits Revised Edition

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Sinh-Domain multiphase sinusoidal oscillator

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Abstract

Multiphase sinusoidal oscillator circuits are presented which utilize Operational Transresistance Amplifier (OTRA) as the active element. The first circuit produces n odd-phase oscillations of equal amplitudes and equally spaced in phase. The second circuit is capable of producing n odd- or even- phase oscillations equally spaced in phase. An alternative approach is discussed in the third circuit, which utilizes a single-phase tunable oscillator circuit which is used to inject signals into a phase shifter circuits. An automatic gain control (AGC) circuit has been implemented for the second and third circuit. The circuits are simple to realize and have a low component count. PSPICE simulations have been given to verify the theoretical analysis. The experimental outcome corroborates the theoretical propositions and simulated results.