Per-Element Decompostion in Distortion Analysis

Decomposition of distortion on per nonlinear element basis is crucial in design optimization, symbolic analysis and nonlinear model reduction. However, traditional methods cannot provide efficient and accurate distortion decomposition, for even moderate size analog circuits, because they are based on symbolic analysis. Analysis is normally possible by using simplified transistor models; however, even the most popular compact models are still inadequate for high frequency (HF) distortion analysis. To achieve both, insight of traditional symbolic analysis, and the handling capability, efficiency and accuracy of commercial numerical simulators, this work proposes an advanced distortion decomposition technique based on nonlinearity transfer matrix.