OTRA-based Grounded-FDNR and Grounded-Inductance Simulators and Their Applications
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New grounded frequency-dependent negative-resistance (FDNR) and grounded inductance simulation circuits, employing an operational trans-resistance amplifier (OTRA) along with two capacitors, two resistors and a voltage follower have been introduced. The application of the new simulators in the realization of a single-resistance controlled oscillator (SRCO) and a single-capacitance controlled oscillator (SCCO) has been demonstrated and the effect of parasitic capacitance and input and output resistances of the OTRA on the performance of these circuits has been evaluated. The workability of the application circuits has been confirmed by experimental results using an OTRA-implemented from commercially available AD844-type current-feedback operational amplifiers (CFOAs).
KeywordsInductance simulation Frequency-dependent-negative-resistance Sinusoidal oscillators Operational transresistance amplifier
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- 18.R. Pandey, M. Bothra, Multiphase sinusoidal oscillators using operational transresistance amplifier, in IEEE Symposium on Industrial Electronics and Applications, pp. 371–376 (2009) Google Scholar