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Novel Feedback Topology Obviates the Need for High Loop Gain

A novel feedback topology is presented, differing from 'classical' feedback by an additional feedback term, inversely proportioned to open-loop transfer function. The result is the elimination of the open-loop transfer function from the closed-loop equation, without requiring high loop gain. An example circuit, implemented with simple means, is discussed, showing a distortion reduction of several orders of magnitude.

Author: Didden, Johannes M.
AES Convention:103 (September 1997) Paper Number:4597 Import into BibTeX
Subject:Amplifiers and Attenuators

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