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Feedback Amplifiers: Design Oriented Analysis (Geordie Boy)
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About Feedback Amplifiers: Design Oriented Analysis
Feedback is a ubiquitous feature of all integrated circuit and solid-state amplifiers today. Many analytical methods to model the feedback loop use approximations that are only apparent to experts, limiting their use by students and most engineers. More general and accurate analytical tools based on advanced concepts in circuits and systems theory are often beyond the reach of undergraduate students and practicing engineers, leaving Spice-like computer simulations as the only resort to obtain a snapshot of circuit behaviour. This book provides simple, yet accurate and proven tools for analysing feedback amplifiers based on Middlebrook’s Feedback Theorem. The analytical approach helps the reader develop an intuitive and generalized understanding of the circuit structure and leads to useful relationships between design attributes and circuit parameters. Simplified methods to calculate input and output impedances for various feedback arrangements are developed and illustrated using numerous illustrative examples. In particular, the systematic approach for studying the capacitive effects leads to accurate prediction of frequency response in a pole-zero form that permits stability analysis and frequency compensation with ease.
