Fully uncoupled independent control of frequency and condition of oscillation: A caution |
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Authors: | Muhammad Taher Abuelma&rsquo atti,Zainulabideen Jamal Khalifa |
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Affiliation: | King Fahd University of Petroleum and Minerals, Box 203, Dhahran 31261, Saudi Arabia |
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Abstract: | Over the years researchers have developed and reported a large number of sinusoidal oscillator circuits and classified them as enjoying fully uncoupled independent control of frequency and condition of oscillation. This classification is based on obtaining the frequency and the condition of oscillation using the Barkhausen criterion. This paper serves as a caution as it appears that this classification is incorrect. Experimental results obtained from recently published circuits; that support this caution, are included. |
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Keywords: | Current feedback operational amplifier Sinusoidal oscillators Barkhausen criterion |
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