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Switched-Current Sinusoidal Oscillators—Single Phase and Multiphase

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Abstract

Circuit designs of sinusoidal switched-current oscillators (SIOs) both single phase and multiphase are presented. First, a novel SIO is proposed. This SIO features simpler configuration and hence fewer transistors and connections, and faster building up of stable oscillation amplitude than those proposed in earlier works. Then, new design schemes of multiple-phase sinusoidal SIOs are introduced. Both even and odd phase SIOs can be implemented using the schemes described. Finally, cascode techniques, S 2 I memory cell, dummy switches and balanced structure are applied to our SIOs to get high precision SIOs. The circuit operations of all SIO proposed have been validated by transistor level SPICE simulations.

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Authors and Affiliations

  1. Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong

    X. D. Jia

  2. Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong

    G. F. Niu & R. M. M. Chen

Authors
  1. X. D. Jia
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  2. G. F. Niu
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  3. R. M. M. Chen
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Jia, X.D., Niu, G.F. & Chen, R.M.M. Switched-Current Sinusoidal Oscillators—Single Phase and Multiphase. Analog Integrated Circuits and Signal Processing 23, 65–76 (2000). https://doi.org/10.1023/A:1008395707367

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