Using Modified Bessel Functions for Calculations of Drain Current Harmonics in a MOS Transistor Operating in Moderate Inversion

I. M. Filanovsky, L. B. Oliveira, N. T. Tchamov

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Abstract

The paper describes evaluation of drain current harmonics in a MOS transistor operating in moderate inversion and strong saturation. The dependence of the drain current on the gate-source and drain-source voltages is described using a simplified 'reconciliation' model developed by Y. Tsividis. Then, in the proposed model the current components corresponding to the terms depending exponentially on normalized gate-source and/or drain-source modulating sinusoidal voltage are evaluated using modified Bessel functions. This approach allows one to omit the small-signal requirement for modulating signals, and calculate the first, second and third harmonics of the drain current caused by the gate-source or drain-source voltages and also find the intermodulation terms. The results are applied to the design of low-distortion low-voltage amplifiers. The recommendations are confirmed by simulations.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2018-May
ISBN (Electronic)9781538648810
DOIs
Publication statusPublished - 26 Apr 2018
Event2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Florence, Italy
Duration: 27 May 201830 May 2018

Publication series

NameIEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2018-May
ISSN (Print)0271-4302

Conference

Conference2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
CountryItaly
CityFlorence
Period27/05/1830/05/18

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Keywords

  • distortion harmonics
  • low-distortion amplifiers
  • low-voltage amplifiers
  • moderate inversion
  • MOS transistor model
  • strong saturation

Cite this

Filanovsky, I. M., Oliveira, L. B., & Tchamov, N. T. (2018). Using Modified Bessel Functions for Calculations of Drain Current Harmonics in a MOS Transistor Operating in Moderate Inversion. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings (Vol. 2018-May). [8350949] (IEEE International Symposium on Circuits and Systems; Vol. 2018-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2018.8350949