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Electronically tunable multiphase sinusoidal oscillator using translinear current conveyors

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Abstract

A new electronically tunable current-mode multiphase sinusoidal oscillator based on translinear current conveyors is presented. The proposed oscillator circuit, which employs only one translinear current conveyor and one grounded capacitor for each phase, can generate arbitrary N output current equal-amplitude signals that are equally spaced in phase (N being even or odd), all at high output impedance terminals. The frequency of oscillation and the condition of oscillation can be controlled electronically and independently through the bias current of the translinear current conveyor. The proposed structure also has simple circuitry, low-component count, and is highly suitable for integrated circuit implementation. The theoretical results were verified by PSPICE simulation. In addition, the modification of the N sinusoidal oscillators to construct a programmable multiphase oscillator is also discussed.

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Authors and Affiliations

  1. Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand

    Montree Kumngern, Jirasak Chanwutitum & Kobchai Dejhan

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  1. Montree Kumngern
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  2. Jirasak Chanwutitum
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  3. Kobchai Dejhan
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Correspondence to Montree Kumngern.

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Kumngern, M., Chanwutitum, J. & Dejhan, K. Electronically tunable multiphase sinusoidal oscillator using translinear current conveyors. Analog Integr Circ Sig Process 65, 327–334 (2010). https://doi.org/10.1007/s10470-010-9470-z

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  • DOI: https://doi.org/10.1007/s10470-010-9470-z

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