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Realizations of Grounded Negative Capacitance Using CFOAs

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Abstract

The paper presents new realizations of grounded negative capacitance, using current feedback operational amplifiers (CFOAs), two resistors and one capacitor. All the proposed realizations are canonic in the number of passive components and do not require any critical component matching condition. Application examples in capacitive cancellation schemes and resistance-controlled low-frequency quadrature sinusoidal oscillator design are provided. The workability of the circuits has been verified by PSPICE simulations.

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Correspondence to Abhirup Lahiri.

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Lahiri, A., Gupta, M. Realizations of Grounded Negative Capacitance Using CFOAs. Circuits Syst Signal Process 30, 143–155 (2011). https://doi.org/10.1007/s00034-010-9215-3

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  • DOI: https://doi.org/10.1007/s00034-010-9215-3

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