In this paper we discuss the application of the negative resistance concept to estimate the amplitude of oscillation of MOS differential LC oscillators in a steady-state regime. This is done by approximating the large-signal non-linearity, associated with the negative resistance, by a piecewise linear model. The analytical findings are in very good agreement with the results provided by transient circuit simulation.
MouraL., ‘An intuitive method for oscillator analysis using Miller's theorems’, International Journal of Electrical Engineering Education, 39(1) (2002), 31–41.
2.
SmithJ., Modern Communication Circuits, 2nd edition (McGraw-Hill International, New York, 1987).
FilanovskyI. G.VerhoenC. J. M.RejaM., ‘Remarks on analysis, design and amplitude stability of MOS Colpitts oscillator’, IEEE Trans. on Circuits and Systems II, 54(9) (2007), 800–804.
5.
HegaziE.AbidiA., ‘Varactor characteristics, oscillator tuning curves, and AM-FM conversion’, IEEE Journal of Solid-State Circuits, 38(6) (2003), 1033–1039.
6.
HajimiriA.ThomasH. L., ‘Design issues in CMOS differential oscillators’, IEEE Journal of Solid-State Circuits, 34(5) (1999), 717–724.
7.
LiS.TsividisT., ‘Analysis of oscillator amplitude control, and its application to automatic tuning of quality factor for active LC filters’, ISCAS, 4(2004), 141–144.
8.
MouraL.DarwazehI., Introduction to Linear Circuit Analysis and Modelling: From DC to RF (Elsevier, Newnes, 2005).
