# Leon O. Chua

### Research Areas

- Biosystems & Computational Biology (BIO)
- Control, Intelligent Systems, and Robotics (CIR), Cellular neural networks; Cellular automata; Complexity;
- Nanoelectronics
- Nonlinear circuits and systems; Nonlinear dynamics; Chaos;

## Biography

Leon Chua became an Assistant Professor of Electrical Engineering at Purdue University in 1964, and was promoted to Associate Professor in 1967. He joined the UC Berkeley faculty in 1970.

He is the first recipient of the 2005 Gustav Kirchhoff Award, the highest IEEE Technical Field Award for outstanding contributions to the fundamentals of any aspect of electronic circuits and systems that has a long term significance or impact. He was also awarded the prestigious IEEE Neural Networks Pioneer Award in 2000 for his contributions in neural networks. He was elected a Fellow of the IEEE in 1974 and has received many international prizes, including the IEEE Browder J. Thompson Memorial Prize in 1972, the IEEE W. R. G. Baker Prize in 1978, the Frederick Emmons Award in 1974, the M. E. Van Valkenhurg Award in 1995, and again in 1998. He was awarded 7 USA patents and 8 Honorary doctorates (Doctor Honoris Causa) from major European universities and Japan. He is also a recipient of the top 15 cited authors in Engineering award in 2002, chosen from the Current Contents (ISI) database of all cited papers in the engineering disciplines in the citation index from 1991 to October 31, 2001, from all branches of engineering. He was elected a foreign member of the European Academy of Sciences (Academia Europea) in 1997.

## Education

- 1964, Ph.D., Electrical Engineering, University of Illinois, Urbana-Champaign
- 1961, M.S., Electrical Engineering, Massachusetts Institute of TechnologyM
- 1959, B.S., Electrical Engineering, MapÃºa Institute of Technology, Manila, Philippines

## Selected Publications

- R. Lum and L. O. Chua, "How to represent continuous piecewise linear functions in closed form," Intl J. Circuit Theory and Applications, vol. 34, no. 6, pp. 617-635, Nov. 2006.
- L. O. Chua, "Local activity is the origin of complexity," Intl. J. Bifurcation and Chaos, vol. 15, no. 11, pp. 3435-3456, Nov. 2005.
- H. Kim, H. Son, T. Roska, and L. O. Chua, "High-performance Viterbi decoder with circularly connected 2-D CNN unilateral cell array," IEEE Trans. Circuits and Systems I: Fundamental Theory and Applications, vol. 52, no. 10, pp. 2208-2218, Oct. 2005.
- H. Son, H. Kim, J. Choi, J. W. Lee, and L. O. Chua, "Maximum likelihood decoding of the partial response signal with analog parallel processing circuits of the CNN," in Proc. 2005 IEEE 9th Intl. Workshop on Cellular Neural Networks and Their Applications, T. Roska, B. E. Shi, Z. Chen, C. Lin, C. Rekeczky, and J. Yang, Eds., Piscataway, NJ: IEEE Press, 2005, pp. 134-137.
- H. Kim, T. Oh, M. S. Lim, and L. O. Chua, "Nonlinear pattern classification associated with cellular neural networks-based dynamic programming," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 15, no. 1, pp. 169-179, Jan. 2005.
- M. Itoh and L. O. Chua, "Multipurpose hysteresis CNN," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 14, no. 12, pp. 4035-4073, Dec. 2004.
- L. O. Chua, V. I. Sbitnev, and S. Yoon, "A nonlinear dynamics perspective of Wolfram's New Kind of Science. Part III: Predicting the unpredictable," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 14, no. 11, pp. 3689-3820, Nov. 2004.
- S. Li, P. Mazumder, and L. O. Chua, "Cellular neural/nonlinear networks using resonant tunneling diode," in Proc. 2004 4th IEEE Conf. on Nanotechnology, Piscataway, NJ: IEEE Press, 2004, pp. 164-167.
- M. Itoh and L. O. Chua, "Structurally stable two-cell cellular neural networks," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 14, no. 8, pp. 2579-2653, Aug. 2004.
- M. Itoh and L. O. Chua, "Star cellular neural networks for associative and dynamic memories," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 14, no. 5, pp. 1725-1772, May 2004.
- Y. Tian, X. Yu, and L. O. Chua, "Time-delayed impulsive control of chaotic hybrid systems," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 14, no. 3, pp. 1091-1104, March 2004.
- M. Itoh and L. O. Chua, "Designing CNN genes," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 13, no. 10, pp. 2739-2824, Oct. 2003.
- L. O. Chua, V. I. Sbitnev, and S. Yoon, "A nonlinear dynamics perspective of Wolfram's New Kind of Science. Part II: Universal neuron," Intl. J. Bifurcation and Chaos in Applied Sciences and Engineering, vol. 13, no. 9, pp. 2377-2491, Sep. 2003.
- T. Roska and L. O. Chua, "The CNN Universal Machine: 10 years later," J. Circuits, Systems and Computers, vol. 12, no. 4, pp. 377-388, Aug. 2003.
- H. Kim, T. Roska, L. O. Chua, and F. Werblin, "Bpa100 Bluetooth protocol analyzerAutomatic detection and tracking of moving image target with CNN-UM via target probability fusion of multiple features," Intl. J. Circuit Theory and Applications, vol. 31, no. 4, pp. 329-346, July 2003.
- L. O. Chua and T. Roska, Cellular Neural Networks and Visual Computing: Foundation and Applications, Cambridge, UK: Cambridge University Press, 2002.
- L. O. Chua, CNN: A Paradigm for Complexity, World Scientific Series on Nonlinear Science (Series A), Vol. 31, Singapore: World Scientific Publishing Company, 1998.
- L. O. Chua and L. Yang, "Cellular neural networks: Theory," IEEE Trans. Circuits and Systems, vol. 35, no. 10, pp. 1257-1272, Oct. 1988.
- L. O. Chua, M. Komuro, and T. Matsumoto, "The double scroll family," IEEE Trans. Circuits and Systems, vol. 33, no. 11, pp. 1072-1118, Nov. 1986.
- L. O. Chua, Introduction to Nonlinear Network Theory, McGraw-Hill Series in Electronic Systems, New York, NY: McGraw-Hill, 1969.

## Awards, Memberships and Fellowships

- Julius Springer Prize for Applied Physics, 2020
- IEEE EDS Celebrated Member Award, 2019
- Guggenheim Fellow, 2010
- IEEE CASS Vitold Belevitch Circuits and Systems Award, 2007
- IEEE Gustav Robert Kirchhoff Award, 2005
- IEEE CASS 2000 Millennium Medal, 2000
- CIS Neural Networks Pioneer Award, 2000
- IEEE CASS Mac E. Van Valkenburg Award, 1998
- IEEE CASS Mac E. Van Valkenburg Award, 1995
- IEEE CASS Charles A. Desoer Technical Achievement Award, 1993
- IEEE CASS Guillemin-Cauer Best Paper Award, 1989
- IEEE CASS Guillemin-Cauer Best Paper Award, 1985
- Institute of Electrical & Electronics Engineers (IEEE) Fellow, 1974
- Frederick Emmons Terman Award of the Electrical and Computer Engineering Division, 1974
- IEEE W. R. G. Baker Prize Paper Award, 1973
- IEEE CASS Guillemin-Cauer Best Paper Award, 1972
- IEEE Browder J. Thompson Memorial Prize Paper Award, 1967