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A Linear Electronically Tunable Sinusoid Oscillator

Koushick Mathur, Palaniandavar Venkateswaran, Rabindranath Nandi
2020 IEICE Electronics Express  

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A linear electronically tunable sinusoid oscillator (LETSO) using a Current Feedback Amplifier (CFA) and three grounded capacitors, along with a pair of matched analog multiplier devices as the composite active building block (ABB) is presented. The design yields a high-Q filter response; thereby a sustained linear oscillatory response is implemented using the concept of Short-Circuit Natural Frequency (SCNF) at Q ∼ ∞. The oscillation frequency ( f o ) is linearly tunable by the multiplier
more » ... ol voltage (V). Effects of the CFA port-rolloff parameters and parasitic capacitors are negligible. The LETSO -response upto a range of f o ∼ 12MHz with measured THD ∼ 2% and linearity error (∆ ∼ 3.6%) had been experimentally verified.
doi:10.1587/elex.17.20200344 fatcat:xroxu6he7vejlog5fwz2zyonva
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Koushick Mathur, Palaniandavar Venkateswaran, Rabindranath Nandi. "A Linear Electronically Tunable Sinusoid Oscillator." IEICE Electronics Express 17.22 (2020)