Larry Nagel
Laurence W. "Larry" Nagel (born 1945) is an American electrical engineer and former university lecturer who is considered the main developer of the SPICE ("Simulation Program with Integrated Circuit Emphasis"). With SPICE, he laid the foundation for Electronic Design Automation (EDA) and computer-aided circuit simulation.
Nagel studied electrical engineering at the University of California, Berkeley, earning his bachelor’s degree in 1969, master’s degree in 1970, and his Ph.D. in 1975 under Donald Pederson. The subject of his dissertation was the development of the simulation program for analog electronic circuits, SPICE. The development began under Ronald A. Rohrer, who initially supervised his dissertation (and used his own program CANCER ("Computer Analysis of Nonlinear Circuits Excluding Radiation"), which had originated as a class project under Rohrer at the university), and then, after Rohrer’s departure, continued under Pederson. A first version was introduced in 1973, and the second in 1975.
Afterward, he worked as an engineer in various areas related to integrated circuits at the Bell Laboratories in Murray Hill, New Jersey, and in Pennsylvania, where he spent twenty years. Among other things, he developed the ADVICE program for circuit simulation and was the project manager for the circuit simulation program Celerity, as well as being involved in the development of other software tools for device and process simulation. He contributed to the development of the Kull–Nagel model for bipolar transistors and designed submicron analog circuits in NMOS technology.
He then spent three years at Anadigics in New Jersey before founding his own consulting firm in 1998 (Omega Enterprises Consulting).Omega Enterprises Consulting He provided consulting both in his old field and as an expert witness in patent litigation. In 2008, he returned to California. He lives in Kensington, California.
Publications
- Nagel, Laurence W.; Rohrer, Ronald A. (1971). "Computer Analysis of Nonlinear Circuits, Excluding Radiation". IEEE Journal of Solid-State Circuits. 6: 166–192. (CANCER)
- Nagel, L. W.; Pederson, D. O. (April 1973). SPICE (Simulation Program with Integrated Circuit Emphasis) (Technical report). University of California, Berkeley. ERL-M382. Retrieved October 12, 2025.
- Nagel, Laurence W. (May 1975). SPICE2: A Computer Program to Simulate Semiconductor Circuits (Technical report). University of California, Berkeley. ERL-M520. Retrieved October 12, 2025. (Nagel’s dissertation).
External links
References
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