Welcome to CAEL (Computer-Aided Engineering Research LAB)

Professors: Michel Nakhla and Ram Achar
5170 ME, Department of Electronics, Carleton University
Ottawa, Ontario, Canada - K1S 5B6
Ph: 613-520-5780/5651/1883; Fax: 613-520-5708
Email: achar@doe.carleton.ca

For more informative contact links, please click here

FACULTY

RESEARCH OVERVIEW

GRADUATE STUDENTS

PUBLICATIONS
(Books; Journal and Conference Papers)

4th YEAR PROJECTS

MISC

 

 

 

 

 

 

 

 

Faculty:

Dr. Michel Nakhla
5170 ME, Department of Electronics, Carleton University
Ottawa, Ontario, Canada - K1S 5B6
Ph: 613-520-5780; Fax: 613-520-5708
msn@doe.carleton.ca

Dr. Ram Achar
5170 ME, Department of Electronics, Carleton University
Ottawa, Ontario, Canada - K1S 5B6
Ph: 613-520-5651; Fax: 613-520-5708
achar@doe.carleton.ca


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Research Overview:  ↑Go to Top

Computer-Aided Design Tools and Methodologies for Analysis of  High-Speed VLSI Systems

The future trend towards higher operating speeds, sharper excitations and more complex designs demands essential changes in the VLSI (Very Large Scale Integration) design/verification methodologies and the associated computer-aided design (CAD) tools. With the increasing signal-speed and decreasing feature sizes, high-frequency effects such as delay, attenuation, reflection, and crosstalk become the dominant factors limiting overall performance of microelectronic systems.

High-speed modules can be diverse, and can exist at any of the hierarchical levels of VLSI systems, including integrated circuits, printed circuit boards, multi-chip modules and backplanes. It is imperative to note that, due to higher frequencies, the traditional and artificial boundaries between different design disciplines such as electrical, thermal and mechanical, etc. are fast vanishing. Conventional CAD tools do not handle adequately the new emerging challenges of high-speed circuits, interconnects and mixed-domain problems. However, if not considered during the early design stages, high-speed effects can result in system failure, leading to extra iterations in the design cycle and steeply increased cost. To cope with these new requirements of managing the complexity of high-speed modules, coordinated research activities spanning various design domains are proposed with the goal of developing new generation CAD algorithms and tools to facilitate easy, efficient and accurate modeling/analysis/optimization process.

The new initiatives are built on the success and the current knowledge of the Computer-Aided Engineering Research Lab (CAEL) in the area of high-speed circuits and interconnects. The research objectives are focused on generic strategic issues that are common to all high-speed applications. In addition, the proposed multidisciplinary tools and methodologies are targeted towards wide range of physical implementation levels. Research activities cover a broad spectrum of issues, including

The proposed methodologies and algorithms will be suitable for iterative interactive design techniques requiring repetitive analysis of large high-speed systems and are expected to lead to shorter design cycles, reduced time-to-market and better quality high-speed electronic systems.

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Recent Publications:    ↑Go to Top


 Multimedia Books:

Publishers: OMNIZ Global Knowledge Corporation
                    in Partnership with IEEE (Education Partners) and Amazon.com

Authors:  M. Nakhla and R. Achar, First Edition: May 01, 2002

1. Introduction to High-Speed Circuit and Interconnect Analysis
     ((ISBN 0-9731047-0-8)
2. Principles of Circuit and Interconnect Simulation
     ((ISBN 0-9731047-1-6)
3. Fundamentals of Multiconductor Transmission Line Analysis
     ((ISBN 0-9731047-2-4)
4. Model-Reduction Algorithms: Principles, AWE, CFH and Macromodeling
     ((ISBN 0-9731047-3-2)
5. Theory of Eigenvalue Analysis and Orthogonal Systems
     ((ISBN 0-9731047-4-0)
6. Krylov Subspace Techniques for Circuit and Interconnect Analysis
     ((ISBN 0-9731047-5-9)
 

  1. Eli Chiprout and Michel Nakhla,  Asymptotic Waveform Evaluation and Moment Matching for Interconnect Analysis ,  Boston, MA : Kluwer Academic Publisher , 1994.
     

  2. Michel Nakhla and Qi-jun Zhang (Editors), Modelling and Simulation of high-Speed VLSI Interconnects, Boston, MA : Kluwer Academic Publisher , 1994.
     

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Chapters in Books (Recent)
 

[1]    R. Achar and M. Nakhla, Minimum Realization of Reduced-Order Models of High-Speed Interconnect Macromodels, Chapter III: Signal Propagation on Interconnects, pp. 23-45, Boston: Kluwer Academic Publishers, 1998.

[2]    M. Nakhla and R. Achar, Interconnect Modelling and Simulation, Chapter XVII: The VLSI Handbook, pp. 17.1 - 17.29, Boca Raton: CRC Press, 2000.

[3]  M. Nakhla, R. Achar and R. Khazaka, Modeling and Simulation of High-Speed VLSI Interconnects, Chapter IV: Circuits And Systems In The Information Age, pp. 187 - 216, NJ: IEEE Publishers, 1997.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Refereed Journal Papers (Recent) ↑Go to Top
 

  1. A. Dounavis, R. Achar and M. Nakhla "Efficient Sensitivity Analysis of Lossy Multiconductor Transmission Lines with Nonlinear Terminations," IEEE Transactions on Microwave Theory and Techniques, accepted Dec 2001.
     
  2. I. Erdin, A. Dounavis, R. Achar and M. Nakhla, "A SPICE Model for Incident Field Coupling to Lossy Multiconductor Transmission Lines,"  IEEE Transactions on Electromagnetic Compatibility, accepted Nov. 2001.
     
  3. A. Dounavis, R. Achar and M. Nakhla "A General Class of Passive Macromodels for Lossy Multiconductor Transmission Lines," IEEE Transactions on Microwave Theory and Techniques, accepted Oct 2001.
     
  4. P. K. Gunupudi and M. Nakhla, "Nonlinear Circuit-Reduction of High-Speed Interconnect Networks Using Conguent Transformation Techniques," IEEE Transactions on Advanced Packaging, vol.24, No 3,pp. 317-325, Aug. 2001.
     
  5. M. Nakhla and R. Achar, "Simulation of High-Speed Interconnects", pp. 693-728, Vol. 89, No. 5, Proceedings of The IEEE, May 2001 (Invited Review/Tutorial Article).
     
  6. E. Gad, R. Khazaka, M. Nakhla and R. Griffith, "A Circuit Reduction Technique for Finding the Steady State Solution of Nonlinear Circuits," IEEE Transactionson  Micorwave Theory and Techniques, vol. 38, pp. 2389-2396, Dec. 2000.
     
  7. A. Dounavis, E. Gad, R. Achar and M. Nakhla, "Passive Model Reduction of Multiport Distributed Interconnects," IEEE Transactions on Microwave Theory and Techniques, vol. 48, pp. 2325-2334, Dec. 2000.
     
  8. R. Khazaka, P. Gunupudi and M. Nakhla, "Efficient Sensitivity Analysis of Transmission-Line Networks using Model Reduction Techniques," IEEE Transactions MTT, vol. 38, pp. 2345-2351, Dec. 2000.
     
  9. I. Erdin, M. Nakhla and R. Achar, " Circuit Analysis of Electromagnetic Radiation and Field Coupling Effects for Networks with Embedded Full-Wave Modules," IEEE Transactions on Electromagnetic Compatibility, vol. 42, pp.449-460, Nov. 2000.
     
  10. A. Dounavis, R. Achar and M. Nakhla, "Efficient Passive Circuit Models for Distributed Networks with Frequency-Dependent Parameters," IEEE Transactions on Advanced Packaging, vol. 23, no. 3, pp 382-392, August 2000.
     
  11. P. K. Gunupudi, M. S. Nakhla and R. Achar, "Simulation of high-speed distributed interconnects using multipoint Krylov subspace techniques," IEEE Transactions on Computer-aided Design of Integrated Circuits and Systems, pp. 799-808, July 2000.
     
  12. N. Soveiko and M. Nakhla, "Efficient capacitance extraction computations in Wavelet Domain," IEEE Transactions on Circuits and Systems-I, pp. 684-701, May 2000
     
  13. R. Achar, M. Nakhla, P. Gunupudi and E. Chiprout, " Passive Multilevel Multipoint Interconnect Reduction Algorithm for Macromodeling of Multiport Networks Including Distributed Elements", IEEE Transactions on Circuits and System-II, pp. 287-301, April 2000
     
  14. A. Dounavis, X. Li, M. Nakhla and R. Achar, "Passive Closed-Form Transmission-Line Model for General-Purpose Circuit Simulators," IEEE Transactions on Microwave Theory and Techniques, vol. 47, no. 12, pp 2450-2459, Dec. 1999.
     
  15. H. Zaabab, Q.J. Zhang, and M.S.Nakhla, "A neural network delay macromodel of high-speed CMOS and BiCMOS circuits," to appear in the International Journal of Analog Integrated Circuits, (15 pages).
     
  16. M. A. Kolbehdari , M. Nakhla and M. Sadiku, "Hyprid model of electromagnetic scattering from eccentric dielectric cylinders," Special issue of the Journal of the Franklin Institute on Antennas and Microwave Technology, Vol. 335B, No.8, pp. 43-51, Feb. 1999.
     
  17. M. A. Kolbehdari and M. Nakhla, "Reduced-order method for dielectric resonators using FEM and CFH," International Journal for computation and Mathematics in Electrical Engineering vol. 18,pp. 84-94,  January'99.
     
  18. I. Erdin, M. Nakhla and R. Khazaka, "Simulation of high-speed interconnects in multilayered medium in the presence of incident Field," IEEE Trans. Microwave Theory and Techniques, vol. 46,  pp.2251-2257., December 1998.
     
  19. R. Achar, M. Nakhla, Q.J. Zhang, "Full-Wave Analysis of High-Speed Interconnects Using Complex Frequency Hopping," IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, vol. 17 ,  pp. 997 - 1016, October 1998.
     
  20. R. Khazaka and M.Nakhla, "Analysis of high-speed interconnects in the presence of electromagnetic interference," IEEE transactions on microwave theory and techniques, vol. 46, pp. 940-947, July 1998.
     
  21. H. Zaabab, Q.J. Zhang and M. Nakhla, "Device and circuit-level modelling using Neural Networks with faster training based on network sparsity," IEEE Trans. Microwave Theory and Techniques, vol. 45, pp. 1696-1704, October 1997.
     
  22. A. Veluswami, M. Nakhla and Q.J. Zhang, "The application of neural networks to EM-based simulation and optimization of interconnects in high-speed VLSI circuits" IEEE Transactions on Microwave Theory and Techniques, Special issue on Automated Circuit Design Using Electromagnetic Simulators, pp. 712-723,  May 1997  (invited paper) .
     
  23. M. A. Kolbehdari and M. Nakhla, " Electromagnetic Modelling  and Simulation of Multiconductor Interconnect Networks with Inhomogeneous Cylindrical  Substrate," IEE Proceedings on Microwaves, Antennas and Propagation, February 1997.
     
  24. Q.J. Zhang, F. Wang and M.S. Nakhla, "Optimization of high-speed VLSI interconnects: a review," Int. Journal on Microwave and Millimeter-wave Computer-Aided Engineering, Special Issue on Optimization Oriented Microwave CAD, vol. 6, pp.83-107, 1997  (invited paper ) .
     
  25. M. Kolbehdari, M.S. Nakhla, Q.J. Zhang,  M. Srinivasan and R. Achar, "Simultaneous time and frequency domain solutions of EM problems using finite element and CFH techniques," IEEE Trans. Microwave Theory and Techniques, vol. 44, pp. 1526-1534,  September 1996.
     
  26. M. Li, Q.J. Zhang and M.S. Nakhla, "Finite difference solution of EM fields by asymptotic waveform techniques,", IEE Proceedings on Microwaves, Antennas and Propagation, vol. 143, pp. 512-520, 1996.
     
  27. J. Williamson, M. Nakhla, Q.J. Zhang and P.D. van der Puije, " Ground noise minimization in integrated circuit packages through pin assignment optimization, " IEEE Trans. on Components, Packaging and Manufacturing Technology  , Part B, vol. 19, pp. 361-371, May 1996.
     
  28. D. Liu, V. Phailatha, Q.J. Zhang and M. Nakhla, "Asymptotic thermal analysis of electronic packages and printed circuit boards," IEEE Trans. on Components, Packaging and Manufacturing Technology  , Part A, vol. 18, pp. 781-787, December 1995.
     
  29. H. Zaabab, Q.J. Zhang and M. Nakhla, "A neural network modeling approach to circuit optimization and statistical design," IEEE Trans. Microwave Theory and Techniques, vol. 43, pp. 1349-1358, June 1995 .
     
  30. E. Chiprout and M. Nakhla, "Analysis of interconnect networks using complex frequency hopping (CFH)," IEEE Transactions on Computer-aided Design , vol. 15, pp.186- 200, Feb. 1995.
     
  31. M. Kolbehdari and M. Nakhla, "Analysis of interconnect networks with conducting wedge loaded by an inhomogeneous dielectric substrate," IEE Proceedings on Microwaves, Antennas and Propagation, vol. 143, No.3, pp. 217-224, June 1996 .
     
  32. R.L. Liu, Q.J. Zhang and M. Nakhla, "Successive asymptotic waveform evaluation of  lossy distributed networks with nonlinear terminations," IEE Proceedings on Microwaves, Antennas and Propagation, vol. 141, No.6, pp. 473-476, 1994.
     
  33. S. Manney, M. Nakhla and Q.J. Zhang, "Analysis of nonuniform frequency dependent high-speed interconnects using numerical inversion of Laplace transform," IEEE Trans. Computer-Aided Design, vol. 13,  pp. 1513-1525, December 1994.
     
  34. R. Sanaie, E. Chiprout, M.S. Nakhla and Q.J. Zhang, "Fast method for frequency and time domain simulation of high-speed VLSI interconnects," IEEE Trans.on Microwave Theory and Techniques,  vol. 42, pp. 2562-2571, December 1994.
     
  35. N. Liu, M. Nakhla and Q.J. Zhang, "Time domain sensitivity of high-speed VLSI interconnects," International Journal on Circuit Theory and Applications, vol. 22, pp.479-511, November 1994.
     
  36. Y.J. Wei, Q.J. Zhang and M. Nakhla, "Multilevel optimization of high-speed VLSI interconnect networks by decomposition," IEEE Trans. Microwave Theory and Techniques, vol. 42, pp. 1638-1650, September 1994.
     
  37. Q.J. Zhang and M. Nakhla, "Statistical simulation and optimization of VLSI interconnects," International Journal on Analog Integrated Circuits and Signal Processing, Special Issue on High-Speed Interconnects, vol. 5, pp. 95-106, 1994.
     
  38. M. Nakhla, "Error probability for multilevel digital systems in presence of intersymbol interference and additive noise", IEEE Transactions on Communications , vol. 42, pp. 2380-2383, July 1994.
     
  39. S. Lum, M. Nakhla and Q.J. Zhang, " Sensitivity analysis of lossy coupled transmission lines with nonlinear terminations", IEEE Transactions on Microwave Theory and Techniques , vol. 42, pp. 607-615, April 1994.
     
  40. L. Lu , M. Nakhla and Q.J. Zhang , " A stepping algorithm for transient analysis of distributed networks", IEEE Transactions on Microwave Theory  and Techniques , pp. 494-500, March 1994.
     
  41. D. Xie and M. Nakhla, " Delay and crosstalk simulation of high-speed VLSI interconnects with nonlinear terminations", IEEE Transactions on Computer-aided Design of Integrated Circuits and Systems , pp. 1798-1811, November 1993.
     
  42. R. Liu, Q.J. Zhang and M. Nakhla, " A frequency domain approach for performance optimization of high-speed interconnects", IEEE Transactions on Microwave Theory and Techniques , vol.40, pp. 2403-2411, December 1992 .
     
  43. R. Griffith, E. Chiprout, Q.J. Zhang and M. Nakhla, " A CAD framework for simulation and optimization of high-speed VLSI interconnects", IEEE Transactions on Circuits and Systems , vol.39, pp.839-906, December 1992.
     
  44. R. Griffith and M. Nakhla, " Mixed frequency/time domain analysis of nonlinear circuits", IEEE Transactions on Computer-aided Design of Integrated Circuits and Systems , vol.11, pp.1032-1043, August 1992.
     
  45. Q.J. Zhang , S. Lum and M. Nakhla , " Minimization of delay and crosstalk in high-speed VLSI interconnects", IEEE Transactions on Microwave Theory and Techniques , vol.MTT-40, pp.1555-1563, July 1992.
     
  46. T. Tang and M. Nakhla , " Analysis of high-speed VLSI interconnects using the asymptotic waveform evaluation technique" , IEEE Transactions on Computer-aided Design of Integrated Circuits and Systems, vol.11, pp.341-352, March 1992.

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Refereed International Conferences (Recent)  ↑Go to Top
 

  1. I. M. Elfadel, H. M. Huang, A. E. Ruehli, A. Dounavis, M. Nakhla "A Comparative Study of Two Transient Analysis Algorithms for Lossy Transmission Lines with Frequency-Dependent Data", Proc. IEEE Electrical Performance of Electronics Packaging EPEP2001, accepted Oct. 2001
     
  2. P. Gunupudi, R. Khazaka, and M. Nakhla "Analysis of transmission line circuits using multi-dimensional model reduction techniques," Proc. IEEE Electrical Performance of Electronics Packaging EPEP2001 , Oct. 2001. (Accepted for publication).
     
  3. P. Gunupudi, R. Khazaka, A. Dounavis, R. Achar and M. Nakhla, "Global multi-level reduction technique for nonlinear simulation of high-speed interconnects," Proc. IEEE Electrical Performance of Electronics Packaging EPEP2001, Oct. 2001 (Accepted for publication).
     
  4. A. Dounavis, R. Achar and M. Nakhla, "A General Class of Passive Macromodels for Efficient Sensitivity Analysis of High-Speed Distributed Interconnects with Nonlinear Terminations," IEEE 8th International Conference on Electronics, Circuits and Systems, pp 899-902, Malta, Sept. 2001.
     
  5. I. Erdin, A. Dounavis, R. Achar, M. Nakhla, "Circuit Simulation of Incident Field Coupling to Multiconductor Transmission Lines with Frequency-Dependent Losses," IEEE EMC International Symposium, Montreal, pp. 1084-1087, Aug. 2001.
     
  6. A. Dounavis, R. Achar and M. Nakhla, "Efficient Sensitivity Analysis of Lossy Multiconductor Transmission Lines with Nonlinear Terminations," IEEE MTT-S International Microwave Symposium Digest, Phoenix, AZ, pp. 2099-2102 June 2001.
     
  7. R. Khazaka, and M. Nakhla"Multi-Level Passive Order Reduction of Interconnect Networks," IEEE MTT-S International Microwave Symposium, pp. 1155-1158, May 2001.
     
  8. R. Khazaka, and M. Nakhla "Addressing redundant poles in Krylov based model reduction," Proc. IEEE Signal Propagation on Interconnects,  pp. 1-4, May 2001.
     
  9. A. Dounavis, P. K. Gunupudi, E. Gad, R. Khazaka, R. Griffith, R. Achar and M. Nakhla, "Addressing Transient Analysis of Multiport Distributed Interconnects," IEEE 9th Topical meeting on Electrical Performance of Electronic Packaging, Phoenix, AZ, pp 243-246, Oct. 2000.
     
  10. P. Gunupudi and M. S. Nakhla, "Multi-Dimensional Model Reduction of VLSI Interconnects," IEEE Custom Integrated Circuits Conference, pp. 499-502, June 2000.
     
  11. E. Gad, A. Dounavis, M. Nakhla and R. Achar, "Passive Model Order Reduction of Multiport Distributed Interconnects," Proceeding DAC, Los Angeles, CA, vol. 37, pp 526-531, June 2000.
     
  12. R. Khazaka, P. Gunupudi and M. Nakhla, "Efficient Sensitivity Analysis of Transmission-Line Networks using Model Reduction Techniques," IEEE  MTT-S International Microwave Symposium, vol. 2, pp. 895-898, June 2000.
     
  13. A. Dounavis, E. Gad, R. Achar and M. Nakhla, "Passive Model-Reduction of Distributed Networks with Frequency-Dependent Parameters," IEEE MTT-S International Microwave Symposium Digest, Boston, Massachuseetts, vol 3, pp 1789-1792, June 2000.
     
  14. E. Gad, R. Khazaka, M. Nakhla and R. Griffith, "Circuit reduction technique for finding the steady state solution of nonlinear circuits," IEEE MTT-S International Microwave Symposium, vol. 1, pp. 83-86, June 2000.
     
  15. E. Gad and M. Nakhla, "Model Reduction for DC Solution of Large Nonlinear Circuits," IEEE International Conference on Computer Aided Desig, ICCAD99, San José, CA, pp. 376-379, Nov. 1999.
     
  16. I. Erdin and M. Nakhla, "Mixed Circuit/Electromagnetic Analysis of Field coupling to High-Speed Interconnects In Inhomogeneous Medium," IEEE 1999 International Symposium on Electromagnetic Compatibility, (Seattle, Washington).
     
  17. P. K. Gunupudi, M. S. Nakhla and R. Achar, "Multi-point multi-port reduction of high-speed distributed interconnects using krylov-space techniques," International Symposium on Circuits and Systems, Orlando, Florida, May 1999, vol. 6, pp 242-245.
     
  18. I. Erdin and Michel Nakhla, "Mixed Circuit/Electromagnetic Analysis of Radiation from High-Speed Interconnects," IEEE 1999 MTT-S International Microwave Symposium.
     
  19. P. K. Gunupudi and M. S. Nakhla, "Model-reduction of nonlinear circuits using krylov-space techniques," IEEE Design Automation Conference, New Orleans, pp 13-16, June 1999.
     
  20. A. Dounavis, X. Li, M. Nakhla and R. Achar, "Passive Closed-Form Transmission Line Model for General Purpose circuit simulators," IEEE MTT-S International Microwave Symposium Digest, Anaheim, CA, vol 1, pp 377-380. June 1999.
     
  21. R. Achar and M. Nakhla, "Efficient Simulation of on-chip RF components using model-reduction techniques", IEEE International Symposium on Circuits and Systems (ISCAS), Orlando, USA, 1999.
     
  22. R. Achar, P. Gunupudi and M. Nakhla, "Multilevel Multipoint Model-Reduction Algorithm for Macromodeling of Multiport Distributed Networks", 3rd IEEE International Workshop on Signal Propagation on Interconnects, Hannover, Germany,  1999 (invited).
     
  23. M. Nakhla and R. Achar, "Recent Advances in Modeling and Simulation of High-Speed VLSI Interconnections", 1999 Workshop on Circuits and Systems, (invited).
     
  24. M. Nakhla, , R. Achar and P. Gunupudi, "Simulation of High-Speed Interconnects using Multilevel Model-Reduction Techniques", IMPAS-99, Calif. USA, 1999 (invited).
     
  25. P. K. Gunupudi, R. Achar, M. S. Nakhla and A. Dounavis, "Simulation of  Distributed Interconnects with Frequency Dependent Parameters Using Krylov-Space Techniques," ECS/IEEE European Conference on Circuit Theory and Design, August 1999, Stresa, Italy, pp. 425-428. (invited).
     
  26. A. Dounavis, X. Li, M. Nakhla and R. Achar, "Passive Closed-Form Transmission Line Model for General Purpose circuit simulators," IEEE MTT-S International Microwave Symposium Digest, Anaheim C. A., vol 1, pp 337-380. June 1999.
     
  27. P. K. Gunupudi, M. S. Nakhla and R. Achar, "Efficient simulation of high speed distributed interconnects using krylov-subspace techniques," IEEE 7th Topical meeting on Electrical Performance of Electronic Packaging, NY, Oct 1998, pp. 295-298. (Best Paper Award)
     
  28. I. Erdin, R. Khazaka and M. Nakhla," EM field coupling to multiconductor transmission lines in multi-layyered medium", 1998 IEEE MTT-S International Microwave Symposium,  vol. 3, pp. 1263-1266, June 1998, Baltimore, USA.
     
  29. R. Achar and M. Nakhla, "A novel technique for minimum-order macromodel synthesis of high-speed interconnect subnetworks", 1998 IEEE International Symposium on Circuits and Systems (ISCAS), June, 1998, Monterey, CA.
     
  30. X. Li, M. Nakhla and R, Achar, "A universal closed-loop high-speed interconnect model for general purpose circuit simulators", 1998 IEEE International Symposium on Circuits and Systems (ISCAS), June, 1998, Monterey, CA.
     
  31. R. Achar, M. Nakhla and E. Ahmed "Nonlinear transient simulation of embedded subnetworks characterized by s-parameters using complex frequency hopping", 1998 IEEE MTT-S International Microwave Symposium, June 1998, Baltimore, USA.
     
  32. R. Achar and M. Nakhla, "Addressing passivity issues in CFH", 2nd IEEE International Workshop on Signal Propagation on Interconnects, May 1998 (Hannover, Germany).
     
  33. Q. Zhang, F, wang, M. Nakhla, J. Bandler and R.M. Biernacki, " Signal integrity optimization of high-speed VLSI packages and interconnects, " IEEE Electronic Components and Technology Conference, (Seattle, Washington), May 1998.
     
  34. R. Griffith and M. Nakhla, " A new high-order absolutely stable explicit numerical integration algorithm for the time-domain simulation of nonlinear circuits" ,  IEEE Int. Conf. Computer Aided Design, (San Jose, CA), November 1997 .
     
  35. R. Achar and M. Nakhla "A fast method for nonlinear simulation of transmision line networks", International Symposium on Nonlinear Theory and Its Applications (NOLTA), Nov. 1997, Hawaii, USA (INVITED PAPER ) .
     
  36. R. Achar, M. Nakhla and E. Chiprout, "Block CFH: A model-reduction technique for distributed interconnect networks", European Conference on Circuits Theroy and Design (ECCTD), Sept 1997, Budapest, Hungary (invited) .
     
  37. M. Nakhla, R. Achar and M. A. Kolbedhari, "Model-reduction techniques for EM and mixed EM/circuit simulation", URSI North American Radio Science Meeting, July 1997, pp.165-171    Montreal, Canada,  (invited)
     
  38. R. Achar, M. A. Kolbehdari and M. Nakhla, "A unified approach for mixed EM/circuit simulation using model-reduction techniques", IEEE International Microwave Symposium Digest, June 1997, pp. 1017-1021, Denver, USA.
     
  39. M. Nakhla, R. Khazaka and R. Achar, "A universal macromodelling technique for high-speed VLSI interconnects", IEEE Inernational Workshop on "Signal Propagation on Interconnects", May 1997, Hannover, Germany,  (invited paper ) .
     
  40. M. A. Kolbedhari, M. Nakhla, R. Achar and M. Srinivasan, "Solution of EM problems using reduced-order models by complex frequency hopping", 13th IEEE Annual Review of Progress in Applied Computational Electromagnetics, March, 1997, Montrery, California,  (invited paper ) .
     
  41. A. Veluswami, M. Nakhla and Q.J. Zhang, " Modelling the frequency-dependent parameters of high-speed interconnects : a neural network approach," IEEE Multichip Module Conference, (Santa Cruz, CA), Feb. 1997.
     
  42. G.W. Zheng, Q.J. Zhang, M.S. Nakhla and R. Achar, "An efficient approach for moment matching simulation of linear subnetworks with measured or tabulated data," IEEE Int. Conf. Computer-Aided Design, (San Jose, CA), November 1996 .
     
  43. Q.J. Zhang, F.Wang and M.S. Nakhla, "Optimization of high-speed VLSI interconnects," Symp. on Antenna Technol. and Appl. Electromagnetics - ANTEM'96  (Montreal, Canada), pp. 265-268, August 1996.
     
  44. G.W. Zheng, Q.J. Zhang and M.S. Nakhla, "CFH simulation for high-speed VLSI interconnects with 3D full wave model," Symp. on Antenna Technol. and Appl.Electromagnetics - ANTEM'96, (Montreal, Canada), pp. 277-280, August 1996.
     
  45. M. Kolbehdari and M. Nakhla, " Analysis of inhomogeneous dielectric resonator structures using FEM and CFH," Symp. on Antenna Technol. and Appl.Electromagnetics - ANTEM'96, (Montreal, Canada), pp.35-37, August 1996.
     
  46. R. Khazaka and M. Nakhla, " Analysis of high-speed interconnects in the presence of electromagnetic interference," IEEE International Microwave Symp. Digest , (San Franscisco, CA), pp. 1811-1814, May 1996.
     
  47. V. Phanilatha,  M.Nakhla and Q.J. Zhang, " Finite element thermal analysis of electronic packages and boards using moment-matching techniques, " Inter. Society Conf. Thermal Phenomena on Electronic Systems (ITHERM),  (Orlando, FL), pp. 391-395, May 1996.
     
  48. R. Khazaka, J. Poltz, M. Nakhla and Q.J. Zhang, " A fast method for simulation of lossy interconnects with frequency dependent parameters," IEEE Multi-Chip Module Conference , (Santa Cruz, CA), pp. 95-98,  February 1996.
     
  49. R. Achar, M. Nakhla and Q.J. Zhang, " Addressing high frequency effects in VLSI interconnects with full wave model and CFH," IEEE International Conference on Computer-Aided Design , (Santa Clara, CA), pp. 53-57, November 1995.
     
  50. H. Zaabab, Q.J. Zhang and M. Nakhla, " Application of neural networks in circuit analysis, " IEEE Int. Conf. Neural Networks, (Perth, Australia), pp. 423-426, November 1995 .
     
  51. M. Nakhla , " Recent progress in the simulation of high speed VLSI interconnects ," Topical Meeting on Electrical Performance of Electronic Packaging, (Portland, Oregon), October 1995 (invited) .
     
  52. M. Li, Q.J. Zhang and M.S. Nakhla, "Solution of EM fields by asymptotic waveform techniques," URSI International Symp. Signals, Systems and Electronics, (San Francisco, CA), pp. 393-396, October 1995.
     
  53. R. Achar, M. Nakhla and Q.J. Zhang, " Moment matching techniques for transient analysis of high speed VLSI interconnects with full wave model", 25th European Microwave Conference, (Bologna, Italy), pp. 820-823, Sept. 1995.
     
  54. M. Kolbehdari, M. Nakhla and Q.J. Zhang, "  Solution of EM problems using finite element and complex frequency hopping techniques, " 25th European Microwave Conference, (Bologna, Italy), pp. 1079-1081, Sept. 1995.
     
  55. M. Nakhla," Tools for signal integrity analysis and optimization," Advanced Routing Workshop, CALCE Electronic Packaging research Center, (Maryland), September'95 (invited).
     
  56. A. Veluswami, H. Zaabab, Q.J. Zhang and M.S. Nakhla, "The application of neural networks to high-speed VLSI interconnect simulation," Canadian Conference on Electrical and Computer Engineering, (Montreal, Canada), pp 381-384, September 1995.
     
  57. R. Achar, R. Khazaka, R. Griffith, M.S. Nakhla and Q.J. Zhang, "Simulation of delay and crosstalk in high-speed VLSI interconnects," Canadian Conferenc on Electrical and Computer Engineering, (Montreal, Canada), pp. 385-388, September 1995.
     
  58. A. Veluswami, Q.J. Zhang and M. Nakhla, "A neural network model for propagation delays in systems with high-speed VLSI interconnect networks," IEEE Custom Integrated Circuits Conference, (Santa, Clara, CA), pp. 387-390,  May 1995 .
     
  59. V. Phanilatha, D.G. Liu, M. Nakhla and Q.J. Zhang, "Nonlinear transient thermal analysis using circuit simulation techniques," 45th IEEE Electronics Components and Technology Conference , (Las Vegas, NV), pp. 879-883, May 1995 .
     
  60. Q.J. Zhang, F. Wang and M.S. Nakhla, "A high-order temporal neural network for word recognition," IEEE International Conf.  Acoustics, Speech and Signal Processing, (Detroit, MI), pp. 3343-3346, May 1995.
     
  61. D.G. Liu, V. Phanilatha, Q.J. Zhang and M.S. Nakhla, "Asymptotic thermal analysis of electronic packages and printed circuit boards," IEEE Semi-Therm Symposium (San Jose, CA), pp. 131-135, Feb. 1995.
     
  62. K. Mihan, B. Stacey, M. Nakhla and Q.J. Zhang, "Concurrent thermal and electrical optimization of high-speed packages and systems," INTERpack: ASME International Intersociety Electronic Packaging Conference, (Lahaina, Hawaii), pp. 221-227, March 1995.
     
  63. R. Khazaka, E. Chiprout, M. Nakhla and Q.J. Zhang, "Analysis of high-speed interconnects with frequency dependant parameters," 11th International Zurich Symp. on  Electromagnetic Compatibility, (Zurich, Switzerland),  pp. 203-208, March 1995 .
     
  64. Q.J. Zhang and M.S. Nakhla, "Simulation and optimization of VLSI interconnects in printed circuit bords," International Conference on Package and PCB Technology (Beijing, China), September 1994.
     
  65. Q.J. Zhang and M. Nakhla, "Signal integrity analysis and optimization of VLSI interconnects using neural network models," Proc. IEEE International Symp. Circuits and Systems, (London, England), pp. 459-462, June 1994.
     
  66. H. Zaabab, Q.J. Zhang and M. Nakhla, "Analysis and optimization of microwave circuits and devices using neural network models," IEEE International Microwave Symp. Digest , (San Diego, CA), pp. 393-396, May 1994.
     
  67. L.Li, O.J. Zhang and M. Nakhla, " A moment method for statistical analysis of high-speed VLSI interconnects", Proceedings of the  IEEE  Custom Integrated Circuit Conference , (San Diego, CA), pp. 305-308, May 1994 .
     
  68. R. Sanaie, E. Chiprout, M. Nakhla and Q.J. Zhang, " Fast method for frequency and time domain simulation of high-speed VLSI interconnects, " Proceedings of the IEEE  International Microwave Symposium , (San Diego, CA) , pp. 1417-1420, May 1994.
     
  69. R. Sanaie, E. Chiprout, M. Nakhla and Q.J. Zhang, " Integrating subnetworks characterized by measured data into moment-matching simulations",  Proceedings of the IEEE Multi-Chip Module Conference , (Santa Cruz, CA) ,  pp. 114-119, March 1994 .
     
  70. M. Nakhla and Q.J. Zhang, " Transient analysis of nonlinear circuits with frequency-dependent parameters ", International Symposium on Nonlinear Theory and Applications , (Waikiki, Hawaii), pp. 323-328,  December 1993 (invited).
     
  71. E. Chiprout, H. Heeb, M. Nakhla and A.E. Ruehli, " Simulating 3-D retarded interconnect models using complex frequency hopping", IEEE International Conference on Computer-Aided Design, (Santa Clara, CA), pp.66-72, November 1993 .
     
  72. N. Liu, M. Nakhla and Q.J. Zhang, "Time-domain sensitivity of high-speed VLSI interconnects," 3rd International Conference on VLSI and CAD , (Teajon, Korea), pp. 68-71, November 1993.
     
  73. S. Manney, M. Nakhla and Q. Zhang," Transient analysis of nonuniform transmission lines using asymptotic waveform evaluation ", 23rd European Microwave Conference , (Madrid, Spain) , Septmber 1993.
     
  74. R.Liu, Q.J.Zhang and M.Nakhla, " Successive Asymptotic Waveform Evaluation of Lossy Distributed Networks with Nonlinear Terminations", 23rd European Microwave Conference , (Madrid, Spain) , Septmber 1993.
     
  75. J. Williamson, K. Kalaichelvan, M. Nakhla, Q.J. Zhang and P.van der Puije," Ground noise estimation and minimization in integrated circuit packages", IEEE International Conference on Electromagnetic Compatibility , (Dallas, TX),  pp. 425-428, August 1993.
     
  76. E. Chiprout and M. Nakhla, " Addressing high-frequency issues in asymptotic waveform evaluation",  Design Automation Conference , (Dallas, TX) , pp.732-736, June 1993.
     
  77. R. Griffith, Q.J. Zhang and M. Nakhla," Parallel time-domain analysis and optimization of distributed VLSI interconnects", IEEE International Symposium on Circuits and Systems , (Chicago, IL),  pp. 1543-1546, May 1993 .
     
  78. Y.Wei ,Q.J. Zhang and M. Nakhla ," Multilevel optimization of high-speed VLSI interconnects using decomposition", IEEE Custom Integrated Circuit Conference , (San Diego,CA),pp. 29.5.1-29.5.4, May 1993.
     
  79. Q.J. Zhang and M. Nakhla, "Yield analysis and optimization of VLSI interconnects in multichip modules",  IEEE Multi-Chip Module Conference , (Santa Cruz, CA), pp.160-163, March 1993 .
     
  80. R.Griffith, Q.J. Zhang and M. Nakhla, " Parallel time-domain analysis and optimization of high-speed  interconnects", Proceedings of the Sixth SIAM Conference on Parallel Processing, pp.225-227, March 1993 .
     
  81. E. Chiprout and M. Nakhla ," Transient waveform estimation of high-speed MCM networks using complex frequency hopping", Proceedings of the IEEE Multi-Chip Module Conference ,  (Santa Cruz, CA),  pp.134-139 , March 1993.
     
  82. S. Manney, M. Nakhla and Q.J. Zhang ," Time domain analysis of nonuniform frequency dependent high-speed interconnects", Proceedings of the IEEE International Conference on Computer-Aided Design , (Santa Clara, CA) , pp. 449-452, November 1992 .
     
  83. H. Besbes, M. Nakhla and Q.J. Zhang , "Analysis of fiber optic communication systems using the saddlepoint approximation", International Workshop on Computer-Aided Modeling, Analysis and Design of Communication Links and Networks, September 1992.
     
  84. S. Lum, M. Nakhla and Q.J. Zhang, " Sensitivity analysis of lossy coupled transmission lines with nonlinear terminations", Proceedings of the   European Microwave Conference , (Espoo, Finland),  pp. 813-818, August 1992.
     
  85. E. Chiprout, and M. Nakhla," Generalized moment matching methods for transient analysis of interconnect networks", Proceedings of the Design Automation Conference , (Anaheim, CA) , pp.201-206, June 1992.
     
  86. R. Liu, Q.J. Zhang and M. Nakhla, "Exact group delay sensitivities for minimization of delay and distortion in high-speed VLSI interconnects", Proceedings of the IEEE International Microwave Symposium , ( Albuquerque, NM), pp.833-836, June 1992.
     
  87. E. Chiprout, and M. Nakhla, "Fast nonlinear waveform estimation of large distributed networks", Proceedings of the IEEE International Microwave Symposium , ( Albuquerque, NM) , pp.1341- 1344, June 1992.
     
  88. E. Chiprout and M. Nakhla, " Optimal pole selection in asymptotic waveform evaluation", IEEE International Symposium on Circuits and Systems , (San Diego, CA), pp.1961-1964, May 1992.
     
  89. L. Lu , M. Nakhla and Q.J. Zhang, " A stepping algorithm for transient analysis of distributed networks", Proceedings of the IEEE International Symposium on Circuits and Systems , (San Diego, CA), pp.1957-1960, May 1992.
     
  90. Q.J. Zhang, S. Lum and M. Nakhla , " Minimization of delay and crosstalk in high-speed VLSI interconnects", Proceedings of the IEEE Custom Integrated Circuit Conference , (Boston, MA), pp. 15.5.1-15.5.4, May 1992.
     
  91. M. Nakhla and Q.J. Zhang, " Simulation and optimization of interconnection delay and crosstalk in multi-chip modules",  IEEE Multi-Chip Module Conference ,  (Santa Cruz, CA), pp.56-59, March 1992.

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 Contact

Computer-Aided Engineering Research LAB (CAEL)
Professors: Michel Nakhla and Ram Achar
5170 ME, Department of Electronics, Carleton University
Ottawa, Ontario, Canada - K1S 5B6
Ph: 613-520-5651;   Fax: 613-520-5708
Email: (msn, achar)@doe.carleton.ca

URL: http://www.doe.carleton.ca/~achar/cael.html
 

Other Useful Links

Department of Electronics

Carleton University

Graduate Studies @ Carleton

International Students Information: (a), (b)

OCIECE: Ottawa-Carleton Institute for Electrical and Computer Engineering

Prof. Michel Nakhla;

Prof. Ram Achar

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 Graduate Students
 

Name

Degree
E. Gad

Ph.D.
A. Dunouvas

Ph.D.
R. Khazaka

Ph.D.
N. Soveiko

Ph.D.
K. Harb

M.A. Sc.
D. Sarswath

M.A. Sc.
B. Skiljo

M.A. Sc.
P. Agrawal

M. Eng.
M. Iskander

M.A. Sc.
S. Nicholl

M.A. Sc.
B. Khabiri

M.A. Sc.
H. Popovici

M.A. Sc.
Y. Soleman

M.A. Sc.
T. Kwan

M.A. Sc.
N. Uppaluri M. A. Sc.
M. Grabari

M.A. SC

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4th Year Projects

Project: Development of High-Speed Interconnect Models and Efficient Simulators.

Introduction: With the continually rising operating frequencies, interconnects are becoming major bottlenecks for high-speed designs. High-speed interconnect effects such as ringing, signal delay, distortion, reflections and crosstalk can severely degrade the system performance. Interconnects can exist at various levels of design hierarchy such as on-chip, packaging structures, multichip modules, printed circuit boards and backplanes. However, conventional circuit simulators do not handle the interconnect analysis efficiently.
 

Goal: The objectives of this project are:

Requirements:


Each participating student will be assigned a specific module of the project.

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