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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.
Circuits and Systems II: Express Briefs, IEEE Transactions on (Volume:55 , Issue: 10 )
Date of Publication: Oct. 2008