Technology Essays, Blogs, and Musings

Lance A. Glasser


1994 ARPA essays

Semiconductor design and manufacturing

Research papers of note


Frequency limitations in circuits composed of linear devices

© Lance A. Glasser 2007-2010

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This paper investigates limitation on the frequency response of networks constructed out of components specified by their small signal models. Tellegen's theorem is used to find tight bounds on the maximum frequency of oscillation. The problem is reduced to deciding whether zero is in the numerical range of a complex non-Hermitian matrix. A decision method is presented, and transistor and negative resistance amplifier examples are developed.

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