The paper presents the derivation of Miller formulas for weakly nonlinear feedback networks. The expressions found are simple and compact and constitute a generalization of the well- known linear case. As an application example, the formulas are applied to a common-emitter amplifier to straightforwardly derive the closed-form expressions of second- and third-harmonic distortion factors. The results found, validated by Spectre simulations with a VBIC bipolar model, allow to understand in depth the contribution of each nonlinear element.
Published in:
Circuits and Systems II: Express Briefs, IEEE Transactions on
(Volume:55
,
Issue:
10
)
Date of Publication: Oct. 2008