Signal flow analysis of feedback networks

Signal flow theory offers a computationally efficient and accurate design-oriented alternative to traditional feedback network analysis techniques. The latter often suffer from burdensome algebra and questionable approximations that render the impact of a given feedback loop on achievable network performance obscure. Unlike the classical literature, which formulates signal flow theory in terms of relatively vague algebraic concepts, the author develops signal flow theory and associated circuit analysis methods exclusively in terms of elementary network theoretic principles. Aside from confirming the circuit analysis property of signal flow techniques, the new perspective underlying their theoretical development offers considerable insight into the genuinely difficult problem of implementing stable, reliable, and effective feedback.>