Sinusoidal oscillators with lower gain requirements at higher frequencies based on an explicit tanh(x) nonlinearity

Elwakil A. S. , Ozoguz S. , SALAMA K. N.

INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS, cilt.38, ss.747-760, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 38 Konu: 7
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1002/cta.592
  • Dergi Adı: INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
  • Sayfa Sayıları: ss.747-760

Özet

Two novel sinusoidal oscillator structures with an explicit tanh(x) nonlinearity are proposed. The oscillators have the attractive feature: the higher the operating frequency, the lower the necessary gain required to start oscillations. A nonlinear model for the two oscillators is derived and verified numerically. Spice simulations using AMS BiCMOS 0.35 mu model parameters and experimental results are shown. Copyright (C) 2009 John Wiley & Sons, Ltd.