Books

• J. Roychowdhury, Numerical Simulation and Modelling of Electronic and Biochemical Systems, Foundations and Trends in Electronic Design Automation, NOW Publishers, 2009.

Book chapters or sections

• T. Wang and J. Roychowdhury, "PHLOGON: PHase-based LOGic using Oscillatory Nanosystems," in Proc. Unconventional Computation and Natural Computation: 13th International Conference, UCNC 2014, London, ON, Canada, July 14-18, 2014, LNCS sublibrary: Theoretical computer science and general issues, Springer, 2014.
• P. Bhansali and J. Roychowdhury, "Injection Locking Analysis and Simulation of Weakly Coupled Oscillator Networks," in Advanced Simulation and Verification of Electronic and Biological Systems, Springer, 2011.
• C. Gu and J. Roychowdhury, "Computing Probabilistic Hypervolumes," in Extreme Statistics in Nanoscale Memory Design (Integrated Circuits and Systems), Springer, 2010.
• J. Roychowdhury and H. A. Mantooth, "Analog and mixed-signal simulation," in Electronic Design Automation for Integrated Circuits Handbook, L. Scheffer, L. Lavagno, and G. Martin, Eds., Boca Raton, FL: CRC Press, 2006.
• J. Roychowdhury, "Automated macromodelling for simulation of signals and noise in mixed-signal/RF systems," in Analog Circuit Design -- RF Circuits: Wide band, Front-Ends, DAC's, Design Methodology and Verification for RF and Mixed-Signal Systems, Low Power and Low Voltage, M. Steyaert, A. H. M. van Roermund, and J. H. Huijsing, Eds., Dordrecht, The Netherlands: Springer Netherlands, 2006, pp. 143-167.

Articles in journals or magazines

• T. Wang and J. Roychowdhury, "[Best Paper] OIM: Oscillator-based Ising Machines for Solving Combinatorial Optimization Problems," Proc. Unconventional Computation and Natural Computation. UCNC 2019., vol. 11493, pp. 232-256, June 2019.
• T. Wang and J. Roychowdhury, "Rigorous Q Factor Formulation and Characterization for Nonlinear Oscillators," arXiv, vol. 1710, no. 02015, Oct. 2017.
• T. Wang and J. Roychowdhury, " Well-Posed Models of Memristive Devices," arXiv, vol. 1605, no. 04897, May 2016.
• J. Roychowdhury, "General-Purpose Boolean Computation Using Sub-Harmonic Injection Locking in Self-Sustaining Oscillators," Proceedings of the IEEE, vol. 103, no. 11, pp. 1958-1969, Nov. 2015.
• J. Roychowdhury, "Boolean Computation Using Self-Sustaining Nonlinear Oscillators," arXiv, vol. 1410, no. 5016, Oct. 2014.
• K. Aadithya, A. Demir, S. Venugopalan, and J. Roychowdhury, "Accurate Prediction of Random Telegraph Noise Effects in SRAMs and DRAMs," IEEE Trans. Computer-Aided Design, Jan. 2013.
• R. K. Balachandran, J. Roychowdhury, K. Dorfman, and V. Barocas, "Telescopic Time-Scale Bridging for Modeling Dispersion in Rapidly Oscillating Flows," AIChE Journal, July 2012.
• J. Roychowdhury, "Hierarchical Abstraction of Phase Response Curves of Synchronized Systems of Coupled Oscillators," arXiv, June 2011.
• N. R. Shanbhag, S. Mitra, G. de Veciana, M. Orshansky, R. Marculescu, J. Roychowdhury, D. Jones, and J. M. Rabaey, "The search for alternative computational paradigms," IEEE Design & Test of Computers, vol. 25, no. 4, pp. 334-343, July 2008.
• S. Srivastava and J. Roychowdhury, "Independent and interdependent latch setup/hold time characterization via Newton-Raphson solution and Euler curve tracking on state-transition equations," IEEE Trans. Computer-Aided Design of Integrated Circuits and Systems, vol. 27, no. 5, pp. 817-830, May 2008.
• N. Dong and J. Roychowdhury, "General-purpose nonlinear model-order reduction using piecewise-polynomial representations," IEEE Trans. Computer-Aided Design of Integrated Circuits and Systems, vol. 27, no. 2, pp. 249-264, Feb. 2008.
• T. Mei and J. Roychowdhury, "A time-domain oscillator envelope tracking algorithm employing dual phase conditions," IEEE Trans. Computer-Aided Design of Integrated Circuits and Systems, vol. 27, no. 1, pp. 59-69, Jan. 2008.
• S. Srivastava and J. Roychowdhury, "Analytical equations for nonlinear phase errors and jitter in ring oscillators," IEEE Trans. Circuits and Systems I: Regular Papers, vol. 54, no. 10, pp. 2321-2329, Oct. 2007.
• T. Mei and J. Roychowdhury, "Small-signal analysis of oscillators using Generalized Multitime Partial Differential Equations," IEEE Trans. Computer-Aided Design of Integrated Circuits and Systems, vol. 26, no. 6, pp. 1054-1069, June 2007.
• R. A. Rutenbar, G. G. E. Gielen, and J. Roychowdhury, "Hierarchical modeling, optimization and synthesis for system-level analog and RF designs (Invited Paper)," Proc. IEEE, vol. 95, no. 3, pp. 640-669, March 2007.
• J. Roychowdhury and R. Melville, "Delivering global DC convergence for large mixed-signal circuits via homotopy/continuation methods," IEEE Trans. Computer-Aided Design of Integrated Circuits and Systems, vol. 25, no. 1, pp. 66-78, Jan. 2006.

Articles in conference proceedings

• T. Wang, K. Aadithya, B. Wu, J. Yao, and J. Roychowdhury, "MAPP: The Berkeley Model and Algorithm Prototyping Platform," in Proc. Custom Integrated Circuits Conference, 2015.
• K. Aadithya, S. Ray, P. Nuzzo, A. Mishchenko, R. K. Brayton, and J. Roychowdhury, "ABCD-NL: Approximating Continuous Non-Linear Dynamical Systems using Purely Boolean Models for Analog/Mixed-Signal Verification," in Proc. IEEE Asia South-Pacific Design Automation Conference, 2014.
• A. Neogy and J. Roychowdhury, "Analysis and design of sub-harmonically injection locked oscillators," in Proc. IEEE DATE, 2012.
• D. Amsallem and J. Roychowdhury, "ModSpec: An Open, Flexible Specification Framework for Multi-Domain Device Modelling," in Proc. IEEE ICCAD, 2011.
• C. Gu and J. Roychowdhury, "Generalized Nonlinear Timing/Phase Macromodeling: Theory, Numerical Methods and Applications," in Proc. IEEE ICCAD, 2010.
• C. Gu and J. Roychowdhury, "Model Reduction via Projection onto Nonlinear Manifolds, with Applications to Analog Circuits and Biochemical Systems," in Proc. IEEE ICCAD, 2008.
• S. Agarwal and J. Roychowdhury, "Efficient multiscale simulation of circadian rhythms using automated phase macromodelling techniques," in Proc. 13th Pacific Symp. on Biocomputing (PSB 2008), R. B. Altman, A. K. Dunker, L. Hunter, T. Murray, and T. E. Klein, Eds., Vol. 13, Singapore: World Scientific Publishing Company, 2008, pp. 402-413.
• C. Gu and J. Roychowdhury, "An efficient, fully nonlinear, variability-aware non-Monte-Carlo yield estimation procedure with applications to SRAM cells and ring oscillators (Best Paper Award)," in Proc.2008 Asia and South Pacific Design Automation Conf. (ASP-DAC '08), Piscataway, NJ: IEEE Press, 2008, pp. 754-761.
• S. Srivastava and J. Roychowdhury, "Rapid estimation of the probability of SRAM failure due to MOS threshold variations," in Proc. 2007 IEEE Custom Integrated Circuits Conf. (CICC '07), Piscataway, NJ: IEEE Press, 2007, pp. 229-232.
• Z. Wang and J. Roychowdhury, "Obtaining frequency sensitivities to variations analytically from parameterized nonlinear oscillator phase macromodels," in Proc. 2007 IEEE Custom Integrated Circuits Conf. (CICC '07), Piscataway, NJ: IEEE Press, 2007, pp. 611-614.
• Z. Wang, X. Lai, and J. Roychowdhury, "PV-PPV: Parameter variability aware, automatically extracted, nonlinear time-shifted oscillator macromodels," in Proc. 44th Annual ACM/IEEE Design Automation Conf. (DAC 2007), New York, NY: The Association for Computing Machinery, Inc., 2007, pp. 142-147.
• S. Srivastava and J. Roychowdhury, "Interdependent latch setup/hold time characterization via Euler-Newton curve tracing on state-transition equations (Best Paper Award)," in Proc. 44th Annual ACM/IEEE Design Automation Conf. (DAC 2007), New York, NY: The Association for Computing Machinery, Inc., 2007, pp. 136-141.
• J. Roychowdhury, "Micro-photonic interconnects: Characteristics, possibilities and limitations," in Proc. 44th Annual ACM/IEEE Design Automation Conf. (DAC 2007), New York, NY: The Association for Computing Machinery, Inc., 2007, pp. 574-575.
• S. Srivastava and J. Roychowdhury, "Rapid and accurate latch characterization via direct Newton solution of setup/hold times," in Proc. 2007 Design, Automation and Test in Europe Conf. and Exhibition (DATE '07), Leuven, Belgium: European Design and Automation Association, 2007, pp. 1006-1011.
• S. Dabas, N. Dong, and J. Roychowdhury, "Automated extraction of accurate delay/timing macromodels of digital gates and latches using trajectory piecewise methods," in Proc. 2007 Asia and South Pacific Design Automation Conf. (ASP-DAC '07), Los Alamitos, CA: IEEE Computer Society, 2007, pp. 361-366.
• X. Lai and J. Roychowdhury, "Advanced tools for simulation and design of oscillators/PLLs (Invited Paper)," in Proc. 2007 Asia and South Pacific Design Automation Conf. (ASP-DAC '07), Los Alamitos, CA: IEEE Computer Society, 2007, pp. 442-449.
• X. Lai and J. Roychowdhury, "TP-PPV: Piecewise nonlinear, time-shifted oscillator macromodel extraction for fast, accurate PLL simulation," in 2006 IEEE/ACM Intl. Conf. on Computer-Aided Design (ICCAD '06) Digest of Technical Papers, New York, NY: The Association for Computing Machinery, Inc., 2006, pp. 269-274.
• T. Mei and J. Roychowdhury, "PPV-HB: Harmonic balance for oscillator/PLL phase macromodels," in 2006 IEEE/ACM Intl. Conf. on Computer-Aided Design (ICCAD '06) Digest of Technical Papers, New York, NY: The Association for Computing Machinery, Inc., 2006, pp. 283-288.
• S. Srivastava, X. Lai, and J. Roychowdhury, "Nonlinear phase macromodel based simulation/design of PLLs with superharmonically locked dividers," in Proc. 28th IEEE Custom Integrated Circuits Conf. (CICC 2006), Piscataway, NJ: IEEE Press, 2006, pp. 349-352.
• T. Mei and J. Roychowdhury, "Rigorous analytical/graphical injection locking analysis of two-port negative resistance oscillators," in Proc. 28th IEEE Custom Integrated Circuits Conf. (CICC 2006), Piscataway, NJ: IEEE Press, 2006, pp. 741-744.
• T. Mei and J. Roychowdhury, "A robust envelope following method applicable to both non-autonomous and oscillatory circuits," in Proc. 43rd Annual ACM/IEEE Design Automation Conf. (DAC 2006), New York, NY: The Association for Computing Machinery, Inc., 2006, pp. 1029-1034.
• X. Lai and J. Roychowdhury, "A multilevel technique for robust and efficient extraction of phase macromodels of digitally controlled oscillators," in Proc. 43rd Annual ACM/IEEE Design Automation Conf. (DAC 2006), New York, NY: The Associaton for Computing Machinery, Inc., 2006, pp. 1017-1022.
• T. Mei and J. Roychowdhury, "Efficient AC analysis of oscillators using least-squares methods," in Proc. 2006 Design, Automation and Test in Europe Conf. (DATE '06), Leuven, Belgium: European Design and Automation Associaton, 2006, pp. 263-268.
• P. Goyal, X. Lai, and J. Roychowdhury, "A fast methodology for first-time-correct design of PLLs using nonlinear phase-domain VCO macromodels," in Proc. 2006 Asia and South Pacific Design Automation Conf. (ASP-DAC '06), Piscataway, NJ: IEEE Press, 2006, pp. 291-296.
• X. Lai and J. Roychowdhury, "Fast simulation of large networks of nanotechnological and biochemical oscillators for investigating self-organization phenomena," in Proc. 2006 Asian and South Pacific Design Automation Conf. (ASP-DAC '06), Piscataway, NJ: IEEE Press, 2006, pp. 273-278.
• X. Lai and J. Roychowdhury, "Macromodelling oscillators using Krylov-subspace methods," in Proc. 2006 Asia and South Pacific Design Automation Conf. (ASP-DAC '06), Piscataway, NJ: IEEE Press, 2006, pp. 527-532.

Technical Reports

• A. G. Mahmutoglu, X. Wang, and J. Roychowdhury, "New Generation Verilog-A Model Development Tools: VAPP and VALint," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2018-89, July 2018.
• T. Wang and J. Roychowdhury, "Modelling Optical Devices and Systems in MAPP," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2017-160, Oct. 2017.

Patents

• I. Shpantzer, M. Tseytlin, Y. Achiam, A. Salamon, I. Smilanski, O. Ritterbush, P. S. Cho, L. Guoliang, J. Khurgin, Y. Meiman, A. Demir, P. Feldman, P. Kinget, N. Krishnapura, J. Roychowdhury, J. Schwarzwalder, and C. Sciabarra, "System and method for code division multiplexed optical communication," U.S. Patent 7,167,651. Jan. 2007.
• I. Shpantzer, Y. Meiman, M. Tseytlin, O. Ritterbush, A. Salamon, P. Feldman, A. Demir, P. Kinget, N. Krishnapura, and J. Roychowdhury, "System and method for orthogonal frequency division multiplexed optical communication," U.S. Patent 7,076,169. July 2006.
• A. Demir and J. Roychowdhury, "Oscillator phase noise prediction," U.S. Patent 6,529,859. March 2003.
• O. Narayan and J. Roychowdhury, "System and method for analyzing forced and unforced oscillators," U.S. Patent 6,518,742. Feb. 2003.
• A. Demir, A. Mehrotra, and J. Roychowdhury, "Method and apparatus for characterizing phase noise and timing jitter in oscillators," U.S. Patent 6,167,359. Dec. 2000.
• J. Roychowdhury, P. Feldmann, and D. E. Long, "Method of making an integrated circuit including noise modeling and prediction," U.S. Patent 6,072,947. June 2000.
• J. Roychowdhury, "Method and apparatus for efficient design and analysis of integrated circuits using multiple time scales," U.S. Patent 5,995,733. Nov. 1999.
• R. C. Melville and J. Roychowdhury, "Systems and methods for testing and manufacturing large-scale, transistor-based, nonlinear circuits," U.S. Patent 5,930,153. July 1999.
• J. Roychowdhury, "Systems and methods for determining characteristics of a singular circuit," U.S. Patent 5,844,821. Dec. 1998.

Talks or presentations

• J. Roychowdhury, "Nonlinear Model-Order Reduction Methods for Oscillatory Systems and Their Applications," presented at 6th International Congress on Industrial and Applied Mathematics, Zurich, Switzerland, July 2007.
• D. L. Jones, M. Jacome, R. Marculescu, S. Mitra, M. Orshansky, J. M. Rabaey, J. Roychowdhury, G. de Veciana, and N. Shanbhag, "Alternative Computational Models," presented at GSRC Joint Alternative/Core Workshop, June 2007.
• S. Srivastava and J. Roychowdhury, "Interdependent Latch Setup/Hold Time Characterization via Euler-Newton Curve Tracing on State-Transition Equations," presented at GSRC Joint Alternative/Core Workshop, June 2007.
• X. Lai, S. Srivastava, C. Bin, Z. Wang, C. Gu, S. Dabas, J. Roychowdhury, A. Pinto, A. L. Sangiovanni-Vincentelli, S. Gambini, and J. M. Rabaey, "MetroSPICE++ and CollabRadio: Synergistic Activities," presented at GSRC Joint Alternative/Core Workshop, June 2007.
• J. Roychowdhury, "Collabradio: Bio-Inspired, Variability-Resistant RF Front-End," presented at Gigascale Systems Research Center Workshop, Hillsboro, OR, March 2007.
• X. Lai, S. Srivastava, J. Roychowdhury, and J. M. Rabaey, "Collaborative Radio Project Update," presented at GSRC Alternative Theme Workshop, Dec. 2006.
• J. Roychowdhury, "Did Leonardo da Vinci Anticipate Ring Oscillators and the Collabradio?," presented at Gigascale Silicon Research Center Working Meeting, University of California, Berkeley, CA, Dec. 2006.
• J. Roychowdhury, "Nonlinear Phase Macromodelling for Fast/Accurate Oscillatory System Simulation," Sunnyvale, CA, Dec. 2006.
• J. Roychowdhury, "Photonic Interconnect: Characteristics, Possibilities and Limitations," presented at 1st International Workshop on Interconnect Design and Variability, Bangalore, India, Dec. 2006.
• J. Roychowdhury, "Fast Simulation of Data and Coupling Noise in PLLs," presented at SRC Annual Review, University of California, Los Angeles, CA, Oct. 2006.
• J. Roychowdhury and J. M. Rabaey, "Collaborative Radio Project," presented at GSRC Annual Symp., San Jose, CA, Sep. 2006.
• J. Roychowdhury, "Optical Interconnect: Features, Possibilities and Limitations," presented at SRC Interconnect Forum, University of California, Santa Cruz, CA, Sep. 2006.
• J. Roychowdhury, "On-Chip Alternative Interconnects," presented at SRC Interconnect Forum, University of California, Santa Cruz, CA, Sep. 2006.
• J. Roychowdhury, "Collaborative Radio," presented at GSRC Annual Review, San Jose, CA, Sep. 2006.
• J. M. Rabaey and J. Roychowdhury, "Collaborative RF Networks Based on Low-Quality Untuned RF Transceivers," presented at Intel External Long-Range Research Symp., San Jose, CA, Aug. 2006.
• J. Roychowdhury, L. Lavagno, J. M. Rabaey, S. Srivastava, and X. Lai, "GSRC Collaborative Radio Project," presented at GSRC Quarterly Workshop, San Francisco, CA, July 2006.
• J. Roychowdhury, "Automated Nonlinear Macromodelling Methods and Their Uses," Hillsboro, OR, July 2006.
• S. Dabas, X. Lai, S. Srivastava, J. M. Rabaey, A. L. Sangiovanni-Vincentelli, J. Roychowdhury, G. B. Meil, M. LaBouff, A. Srivastava, A. Pinto, and T. Mei, "Hybrid System Simulation: MetroSPICE++ (and CollabRadio Design Driver)," presented at GSRC Quarterly Workshop, San Francisco, CA, July 2006.
• J. Roychowdhury, "Novel Numerical Simulation Methods and Design Formulae for Oscillatory Systems," Carnegie Mellon University, Pittsburgh, PA, May 2006.
• J. Roychowdhury, "Nonlinear Model Reduction and Its Applications," University of California, Berkeley, May 2006.
• J. Roychowdhury, "Advanced Simulation and Macromodelling Tools for Analog, RF and High-Speed Systems," Fridley, MN, May 2006.
• J. Roychowdhury, "High-Performance Computing for System-Level Design of Electronic, Biological and Mixed-Domain Systems," University of Minnesota, Minneapolis, MN, Feb. 2006.
• J. Roychowdhury, "Simulation of Electronic and Mixed-Domain Systems," presented at ECE Colloquium, University of Minnesota, Minneapolis, MN, Feb. 2006.
• J. Roychowdhury, "Algorithms for Bridging Circuit and System-Level Simulation," University of Minnesota, Minneapolis, MN, Jan. 2006.

Masters Reports

• J. Hung and J. Roychowdhury, "A Study on Advanced Ising Machine Designs: BLIM, King's Graph Mapping, and OIM Chips," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2024-95, May 2024.
• N. Sagan and J. Roychowdhury, "Ising Machines: Theory and Practice," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2023-138, May 2023.
• J. Roychowdhury and S. Seal, "Oscillator-Based Potts Machine (OPM) for the Implementation of the Vector Potts Model," EECS Department, University of California, Berkeley, Tech. Rep. UCB/EECS-2022-198, Aug. 2022.