Abstract
Over the last years the evergrowing demand for higher performance has led to much interest in using nonlinear circuit concepts for electronic circuit design. For this we have to deal with analysis and synthesis of dynamic nonlinear circuits.
This thesis proposes to handle the nonlinear design complexity by dividing the design process in two steps. In the first step, a highlevel synthesis/analysis step, a circuit topology implementing the wanted (nonlinear) function is found. We conclude that an expansion in basic functions, chosen to fit the nonlinear building blocks used, appears to be the best option for implementing this step.
The second step consists of a lowlevel analysis/synthesis step, in which the quality of the topology is determined. The thesis research has focused on using the linear timevarying (LTV) smallsignal model for describing the dynamic behaviour of nonlinear circuits in the context of lowlevel analysis/synthesis. This model is a generalization of the conventional linear timeinvariant smallsignal model and allows the use of equivalent stability criterions. Linear eigenvalues and poles are generalized to dynamic eigenvalues, Floquet exponents and Lyapunov exponents. The LTV smallsignal model decreases lowlevel modeling complexity by using knowledge from the highlevel step.
The linear timevarying approach was applied to various specific nonlinear circuits: a negative feedback amplifier with classB output stage, a dynamic translinear filter and oscillator and a differential pair used as a limiter. These design examples show that the linear timevarying approach is a good modeling candidate for lowlevel synthesis/analysis.
Original language  English 

Qualification  Doctor of Philosophy 
Supervisors/Advisors 

Award date  9 Sep 2003 
Place of Publication  Enschede 
Publisher  
Print ISBNs  909017169X 
Publication status  Published  2003 
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Cite this
Kuijstermans, F. (2003). Design of Nonlinear Circuits, the Linear TimeVarying Approach. Print Partners IPSkamp BV.