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VLSI Design
Volume 2010, Article ID 687498, 8 pages
http://dx.doi.org/10.1155/2010/687498
Research Article

Nonlinear Circuit Analysis via Perturbation Methods and Hardware Prototyping

1Thayer School of Engineering, Dartmouth College, Hanover, 03755, USA
2School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, 30332-0250, USA

Received 3 June 2009; Accepted 8 December 2009

Academic Editor: Benjamin J. Blalock

Copyright © 2010 K. Odame and P. E. Hasler. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nonlinear signal processing is necessary in many emerging applications where form factor and power are at a premium. In order to make such complex computation feasible under these constraints, it is necessary to implement the signal processors as analog circuits. Since analog circuit design is largely based on a linear systems perspective, new tools are being introduced to circuit designers that allow them to understand and exploit circuit nonlinearity for useful processing. This paper discusses two such tools, which represent nonlinear circuit behavior in a graphical way, making it easy to develop a qualitative appreciation for the circuits under study.