Journal Publications

  1. L. Zhou, S. Djordjevic, R. Proietti, D. Ding, S. Yoo, R. Amirtharajah, and V. Akella, "Design and Evaluation of an Arbitration-Free Passive Optical Crossbar for On-Chip Interconnection Networks," Applied Physics A, Vol. 95, No. 4, June 2009, pp. 1111-8
  2. N. Guilar, A. Chen, T. Kleeburg, D. Yankelevich, and R. Amirtharajah, "Integrated Solar Energy Harvesting and Storage," IEEE Transactions on VLSI Systems, Vol. 17, No. 5, May 2009, pp. 627-37
  3. N. Guilar, R. Amirtharajah and P. Hurst, "A Full-Wave Rectier With Integrated Peak Selection for Multiple Electrode Piezoelectric Energy Harvesters," IEEE Journal of Solid-State Circuits, Vol. 44, No. 1, Jan. 2009, pp. 240-6
  4. R. Amirtharajah, A. Chen, J. Loo and N. Guilar,"Nanomaterial Resistive Sensors: Noise, Power, and Circuit Interfaces," International Journal of Nanotechnology, Vol. 5, Nos. 4/5, 2008, pp. 497-518
  5. J. Oliver, R. Amirtharajah, V. Akella, R. Geyer, and F. Chong,"Life Cycle Aware Com- puting: Reusing Silicon Technology," IEEE Computer, Vol. 40, No. 12, Dec. 2007, pp. 56-61
  6. R.Rao,J.Wenck,D. Franklin, R. Amirtharajah, and V. Akella, "Exploiting Non-Uniform Memory Access Patterns Through Bitline Segmentation," ACM SIGMICRO Newsletter, Vol. 24, No. 1, 2006, [online], available: http://sigmicro-online.org/papers24 1/6.pdf
  7. R. Amirtharajah, J. Collier, J. Siebert, B. Zhou and, A. Chandrakasan, "DSPs for Energy Harvesting Sensors: Applications and Architectures," IEEE Pervasive Computing Magazine, Vol. 4, Issue 3, July-Sep. 2005, pp. 72-9
  8. D. D. Thaker, R. Amirtharajah, F. Impens, I. L. Chuang and, F. T. Chong, "Recursive TMR: Scaling Fault Tolerance in the Nanoscale Era," IEEE Design & Test of Computers, Vol. 22, Issue 4, July-Aug. 2005, pp. 298-305
  9. R. Amirtharajah and A. Chandrakasan, "A Micropower Programmable DSP Using Approximate Signal Processing Based on Distributed Arithmetic," IEEE Journal of Solid-State Circuits, Vol. 39, No. 2, Feb. 2004, pp. 337-47
  10. J. R. Benham, R. Amirtharajah, J. Critchlow, T. Simon, and T. F. Knight, Jr., "An Alignment Insensitive Separable Electromagnetic Coupler for High Speed Digital Multidrop Bus Applications," IEEE Transactions on Microwave Theory and Techniques, Vol. 51, No. 12, Dec. 2003, pp. 2597-2603
  11. S. Meninger, J.-O. Mur-Miranda, R. Amirtharajah, A. Chandrakasan, and J. Lang, "Vibration-to-Electric Energy Conversion," IEEE Transactions on VLSI Systems, Vol. 9, No. 1, Feb. 2001, pp. 64-76
  12. A. Dancy, R. Amirtharajah, and A. Chandrakasan, "High-Efficiiency Multiple-Output DCDC Conversion for Low-Voltage Systems," IEEE Transactions on VLSI Systems, Vol. 8, No. 3, June 2000, pp. 252-63
  13. R. Amirtharajah and A. Chandrakasan, "Self-Powered Signal Processing Using Vibration-Based Power Generation," IEEE Journal of Solid-State Circuits, Vol. 33, No. 5, May 1998, pp. 687-695

Conference Proceedings

  1. N. Guilar, R. Amirtharajah, P. Hurst, and S. Lewis, "An Energy-Aware Multiple-Input Power Supply with Charge Recovery for Energy Harvesting Applications," 2009 IEEE Int'l. Solid-State Circuits Conference Digest of Technical Papers (ISSCC 2009), 8-12 Feb. 2008, pp. 298-9, 299a
  2. S. Yoo, V. Akella, R. Amirtharajah, B. Baas, K. Bergman, S. Fan, J. Harris, M. Lipson, D. Miller, and J. Shalf, "Balanced Computing with Nanophotonic Interconnects," 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS 2008), 9-13 Nov. 2008, pp. 368-9
  3. A. Hadke, T. Benavides, R. Amirtharajah, M. Farrens, and V. Akella, "Design and Evaluation of an Optical CPU-DRAM Interconnect," 2008 IEEE Int'l. Conference on Computer Design (ICCD 08), 12-5 Oct. 2008, pp. 492-7
  4. A. Hadke, T. Benavides, S. Yoo, R. Amirtharajah, and V. Akella, "OCDIMM: Scaling the DRAM Memory Wall Using WDM Based Optical Interconnects," 16th IEEE Symposium on High Performance Interconnects (HOTI 08), 26-8 Aug. 2008, pp. 57-63
  5. N. Guilar, E. Fong, T. Kleeburg, D. Yankelevich, and R. Amirtharajah, "Energy Harvesting Photodiodes with Integrated 2D Diffractive Storage Capacitance," 2008 International Symposium on Low Power Electronics and Design (ISLPED 2008), 11-3 Aug. 2008, pp. 63-8
  6. J. Oliver, R. Amirtharajah, V. Akella, and F. Chong, "Credit-Based Dynamic Reliability Management Using Online Wearout Detection," Proceedings of the 5th ACM Conference on Computing Frontiers (CF '08), 5-7 May 2008, pp. 139-47
  7. N. Guilar, P. Hurst, R. Amirtharajah, D. Margolis, and D. Horsley, "Interface Circuits for Multiphase Piezoelectric Energy Harvesters," 23rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 08), 24-8 Feb. 2008, pp. 639-44
  8. N. Guilar, R. Amirtharajah, and P. Hurst, "A Full-Wave Rectifier for Interfacing with Multi-Phase Piezoelectric Energy Harvesters," 2008 IEEE Int'l. Solid-State Circuits Conference Digest of Technical Papers (ISSCC 2008), 3-7 Feb. 2008, pp. 302-3, 615
  9. R. Geyer, J. Oliver, R. Amirtharajah, V. Akella, and F. T. Chong, "Microchip Reuse: Environmental Rationale and Design Implications," 3rd International Conference on Life Cycle Management (LCM 2007), 27-29 August 2007
  10. J. Wenck, J. Collier, J. Siebert, and R. Amirtharajah, "AC Power Supply Circuits for Energy Harvesting," 2007 Symposium on VLSI Circuits (VLSI 2007), 14-16 June 2007, pp. 92-3.
  11. N. Guilar, P. Hurst, and R. Amirtharajah, "Analysis of DC-DC Conversion for Energy Harvesting Systems Using a Mixed-Signal Sliding-Mode Controller," 38th IEEE Power Electronics Specialists Conference (PESC 07), 17-21 June 2007, pp. 2620-5
  12. L. Guo, M. Scott, and R. Amirtharajah, "An Energy Scalable Functional Unit for Sensor Signal Processing," IEEE 2007 International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 15-20 April 2007, Vol. II, pp. 73-6
  13. R. Rao, J. Wenck, D. Franklin, R. Amirtharajah, and V. Akella, "Segmented Bitline Cache: Exploiting Non-Uniform Memory Access Patterns," 13th IEEE International Conference on High Performance Computing (HiPC 2006), 18-21 December 2006, pp. 123-34
  14. J. Oliver, R. Amirtharajah, R. Geyer and F. T. Chong, "Life-Cycle Aware Computer Architecture: Reusing Silicon in the Technology Food Chain," ACM 12th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS 2006) Wild and Crazy Ideas (WACI-4), 24-26 October 2006
  15. N. Guilar, A. Chen, T. Kleeburg, and R. Amirtharajah, "Integrated Solar Energy Harvesting and Storage," 2006 International Symposium on Low Power Electronics and Design (ISLPED 2006), 4-6 October 2006, pp. 20-4
  16. L. Guo, M. Scott, and R. Amirtharajah, "An Energy Scalable Computational Array for Sensor Signal Processing," IEEE 2006 Custom Integrated Circuits Conference (CICC), 10- 13 September 2006, pp. 317-20
  17. R. Amirtharajah, J. Collier, J. Siebert, J. Wenck, and B. Zhou, "Circuits for Energy Har- vesting Sensor Signal Processing" (invited) 2006 43rd ACM/IEEE Design Automation Con- ference, 24-28 July 2006, pp. 639-44
  18. R. Amirtharajah, "An Energy Scalable Computational Array for Sensor Signal Processing" (invited) 2006 ISSCC Special Topic Session on Power-Aware Signal Processing, 5 February 2006
  19. R. Rao, J. Wenck, D. Franklin, R. Amirtharajah, and V. Akella, "Exploiting Non-Uniform Memory Access Patterns Through Bitline Segmentation," 4th Workshop on Memory Performance Issues (WMPI-2006), 11 February, 2006
  20. R. Amirtharajah, A. Chen, D. Thaker, and F. T. Chong, "Circuit Interfaces and Optimization for Resistive Nanosensors," (invited) Proc. of SPIE, Vol. 6008: Nanosensing: Materials and Devices II, 23-26 October 2005, pp. 60080J1-15
  21. J. Siebert, J. Collier, and R. Amirtharajah, "Self-Timed Circuits for Energy Harvesting AC Power Supplies," 2005 International Symposium on Low Power Electronics and Design, August 2005, pp. 315-8
  22. R. Amirtharajah, "Micropower ICs for Energy Scavenging and Sensor Signal Processing," (invited) IEEE 2005 Vail Computer Elements Workshop, 26-29 June 2005
  23. D. D. Thaker, A. Chen, R. Amirtharajah, and F. T. Chong, "On Designing Self-Calibrating Nanoscale Sensors that Adaptively Invest Power for Accuracy," Proc. of IEEE International Workshop on Design and Test of Defect-Tolerant Nanoscale Architectures (NANOARCH'05), May 2005, pp. 4.9-4.17
  24. D. D. Thaker, F. Impens, I. L. Chuang, R. Amirtharajah, and F. T. Chong, "On Using Recursive TMR as a Soft Error Mitigation Technique," 2005 Workshop on the System Effects of Logic Soft Errors (SELSE-1), 5-6 April 2005
  25. J. R. Benham, R. Amirtharajah, J. Critchlow, T. Simon, and T. F. Knight, Jr., "An Align- ment Insensitive Separable Electromagnetic Coupler for High Speed Digital Multidrop Bus Applications," 2003 International Microwave Symposium, 8-13 June 2003, vol. 2, pp. 1163- 6.
  26. T. Simon, R. Amirtharajah, J.R. Benham, J. Critchlow, and T.F. Knight, Jr., "A 1.6 Gb/s/pair Electromagnetically Coupled Multidrop Bus Using Modulated Signaling," 2003 ISSCC Digest of Technical PapersM, Feb. 2003, pp. 184-5, 487
  27. R. Amirtharajah, S. Meninger, J.-O. Mur-Miranda, A. Chandrakasan, and J. Lang, "A Micropower Programmable DSP Powered Using a MEMS-Based Vibration-to-Electric Energy Converter," 2000 ISSCC Digest of Technical Papers, 2000, pp. 362-3, 469
  28. R. Amirtharajah, T. Xanthopoulos, and A. Chandrakasan, "Power Scalable Processing Using Distributed Arithmetic," 1999 International Symposium on Low Power Electronics and Design, 1999, pp. 170-5
  29. S. Meninger, J.-O. Mur-Miranda, R. Amirtharajah, A. Chandrakasan, and J. Lang, "Vibration-to-Electric Energy Conversion," 1999 International Symposium on Low Power Electronics and Design, 1999, pp. 48-53
  30. A. Chandrakasan, R. Amirtharajah, S.-H. Cho, J. Goodman, G. Konduri, J. Kulik, W. Rabiner, and A. Wang, "Design Considerations for Distributed Microsensor Systems," 1999 Proceedings of the IEEE Custom Integrated Circuits Conference, 1999, pp. 279-86
  31. A. Chandrakasan, R. Amirtharajah, J. Goodman, and W. Rabiner, "Trends in Low Power Digital Signal Processing," 1998 International Symposium on Circuits and Systems, Vol. 4, 1998, pp. 604-7
  32. R. Amirtharajah and A. Chandrakasan, "Self-Powered Low Power Signal Processing," 1997 Symposium on VLSI Circuits Digest of Technical Papers, June 1997, pp. 25-26
  33. M. Bolotski, T. Simon, C. Vieri, R. Amirtharajah, and T.F. Knight, Jr., "Abacus: A 1024 Processor 8 ns SIMD Array,"Proc. Sixteenth Conference on Advanced Research in VLSI, March 1995, pp. 28-40
  34. M. Bolotski, et al., "Abacus: A High-Performance Architecture for Vision," Proc. of ICPR, 1994

Book Chapters

  1. R. Amirtharajah, "Distributed Arithmetic," in Reconfigurable Computing: The Theory and Practice of FPGA-Based Computation, S. Hauck and A. DeHon, eds.,
  2. A. Chandrakasan, R. Amirtharajah, A. Dancy, J. Goodman, W. Rabiner, and T. Xanthopoulos, "Future Directions in Energy Efficient Computing," in Low-Power, High-Speed ULSI Circuits and Technology, Realize, Inc., Japan, 1998.

Patents

  1. T. Simon, R. Amirtharajah, and J. R. Benham, "Controlling Coupling Strength in Electro- magnetic Bus Coupling," U.S. Patent No. 7,411,470, (2008)
  2. T. Simon, R. Amirtharajah, J. R. Benham, and J. Critchlow, "Electromagnetic Coupler Registration and Mating ," U.S. Patent No. 7,252,537, (2007)
  3. R. Amirtharajah, T. Simon, J. R. Benham, J. Critchlow, and M. Naylor, "Interconnecting of Digital Devices," U.S. Patent No. 7,199,681, (2007)
  4. T. Simon, R. Amirtharajah, and J. R. Benham, "Bus Signaling Through Electromagnetic Couplers Having Different Coupling Strengths at Different Locations," U.S. Patent No. 7,126,437, (2006)
  5. T. Simon, R. Amirtharajah, and J. R. Benham, "Controlling Coupling Strength in Electro- magnetic Bus Coupling," U.S. Patent No. 7,088,198, (2006)
  6. T. Simon, R. Amirtharajah, T. F. Knight, Jr., N. Marketkar, and J. R. Benham, "Electro- magnetically Coupled Bus System," U.S. Patent No. 7,080,186 (2006)
  7. T. Simon, R. Amirtharajah, N. Marketkar, and T. F. Knight, Jr., "Symbol-Based Signaling Device for an Electromagnetically-Coupled Bus System," U.S. Patent No. 7,075,996, (2006)
  8. T. Simon and R. Amirtharajah, "Calibrating Return Time With Cross-Coupled Arbiter/Delay Circuits to Compare Clock Signals," U.S. Patent No. 7,039,824, (2006)
  9. N. Marketkar, T. F. Knight, Jr., J. R. Benham and R. Amirtharajah, "Electromagnetic Coupler Flexible Circuit With a Curved Coupling Portion," U.S. Patent No. 6,987,428, (2006)
  10. T. Simon , R. Amirtharajah, J. R. Benham, and J. Critchlow, "Electromagnetic Coupler Registration and Mating," U.S. Patent No. 6,887,095 (2005)
  11. T. Simon and R. Amirtharajah, "Selectively Combining Signals to Produce Desired Output Signal," U.S. Patent No. 6,812,761 (2004)
  12. J. R. Benham and R. Amirtharajah, "Digital Network," U.S. Patent No. 6,788,163, (2004)
  13. T. Simon and R. Amirtharajah, "Calibrating Return Time for Resynchronizing Data De- modulated From a Master Slave Bus," U.S. Patent No. 6,779,123, (2004)
  14. T. Simon, R. Amirtharajah, N. Marketkar, T. F. Knight, Jr., and J. R. Benham, "Symbol- Based Signaling for an Electromagnetically-Coupled Bus System," U.S. Patent No. 6,697,420, (2004)
  15. T. Simon and R. Amirtharajah, "Generating and Using Calibration Information," U.S. Patent No. 6,665,624, (2003)
  16. T. Simon and R. Amirtharajah, "Selectively Combining Signals to Produce Desired Output Signal," U.S. Patent No. 6,661,269 (2003)
  17. T. Simon, R. Amirtharajah, T. F. Knight, Jr., N. Marketkar, and J. R. Benham, "Electro- magnetically Coupled Bus System," U.S. Patent No. 6,625,682 (2003)
  18. N. Marketkar, J. R. Benham, T. F. Knight, Jr., and R. Amirtharajah, "An Electromagnetic Coupler Circuit Board Having at Least One Angled Conductive Trace," U.S. Patent No. 6,611,181 (2003)
  19. J. R. Benham, N. Marketkar, and R. Amirtharajah, "An Electromagnetic Coupler," U.S. Patent No. 6,573,801 (2003)
  20. T. Simon and R. Amirtharajah, "Clock Reshaping," U.S. Patent No. 6,498,512 (2002)

Magazine Articles

  1. R. Amirtharajah, J. Collier, J. Siebert, B. Zhou, and A. Chandrakasan,"Digital Signal Processors for Energy Harvesting Sensors: Applications and Architectures,"IEEE Pervasive Computing, to appear.

Student Theses

  1. Z. Ansari,"Energy Scalable Distributed Arithmetic on a Field Programmable Gate Array and a Standard-Cell Core", M.S. Thesis, ECE Dept. UC Davis, 2005.
  2. J. Collier,"Memory and Low-Swing Interconnect for Energy Harvesting Circuit Applications", M.S. Thesis, ECE Dept. UC Davis, 2005.
  3. J. Siebert,"Pipelined Datapaths for AC Power Supplies", M.S. Thesis, ECE Dept. UC Davis, 2005.
  4. B. Zhou,"Memory Design for Energy Scalable Reconfigurable Logic", M.S. Thesis, ECE Dept. UC Davis, 2004.