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Reply to comment on “Identification of a class of two CFOA-based sinusoidal RC oscillators”

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Abstract

This reply relates to a recently published comment (Wangenheim, Analog Integrated Circuits and Signal Processing 67:117–119, 2011) which discusses the validity of the well known Barkhausen criterion of sinusoidal oscillation. According to the author failure to produce sinusoidal oscillation if real amplifiers are used cannot be described as “failure of the Barkhausen criterion”. This conclusion was reached based on the SPICE simulation of a CFOA-based oscillator circuit. It is shown here that while this result can support the verbal formulation of the Barkhausen criterion, it can not support its widely used mathematical formulation and the results obtained based on it. In fact this widely used mathematical formulation of the Barkhausen criterion can not predict the exact frequency and condition of oscillation of any sinusoidal oscillator circuit.

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Authors and Affiliations

  1. King Fahd University of Petroleum and Minerals, Box 203, Dhahran, 31261, Saudi Arabia

    Muhammad Taher Abuelma’atti

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  1. Muhammad Taher Abuelma’atti
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Correspondence to Muhammad Taher Abuelma’atti.

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Abuelma’atti, M.T. Reply to comment on “Identification of a class of two CFOA-based sinusoidal RC oscillators”. Analog Integr Circ Sig Process 71, 155–157 (2012). https://doi.org/10.1007/s10470-011-9778-3

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  • DOI: https://doi.org/10.1007/s10470-011-9778-3

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