On the systematic synthesis of OTA-based Wien oscillators

Author: Yong-an Li

Abstract:
A NAM expansion method for systematic synthesis of OTA-based Wien oscillators is given. Moreover, the NAM expansion method for four different classes of the oscillators is considered. The class I oscillators employ three OTAs,the class II oscillators employ four OTAs,the class III oscillators employ five OTAs, and the class IVoscillators employ six OTAs. Each class has 32 differentforms, resulting in 128Wien oscillators using OTAs. Having used grounded capacitors, the circuits are easy to be integrated and their parameters can be tuned electronically through tuning bias currents of the OTAs. The MULTISIM simulation results have been included to support the generation method.

Keywords:
Wien oscillator
OTA
Nullor–mirror element
Nodal admittance matrix expansion

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 9, September  2013)

Publisher: Elsevier

ISSN Information: 1434-8411

On the systematic synthesis of OTA-based Wien oscillators

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