UNIC

Publications

Journal Publication

  1. H. Aghasi, R. Mousavi Iraei, A. Naeemi and E. Afshari "An Efficient Non-Boolean Pattern Recognition Using ASL Devices," Submitted to IEEE transaction on Nanotechnology, Dec 2015.

  2. Y. Tousi and E. Afshari, "A Scalabale Terahertz 2-D Phased Array," to appear in IEEEJournal of Solid-State Circuits, Feb. 2015.

  3. E. Afshari, R. Han and Y. Tousi, "Filling the Gap with Sand: When Terahertz Meets CMOS," invited to the IEEE Microwave Magazine, 2014.

  4. S. Saadat, H. Aghasi, H. Mosallaei, and E. Afshari, "Low Power Negative Inductance Integrated Circuit for GHz applications," to appear in the IEEE Microwave and Wireless Components Letters, Feb. 2015.

  5. M. Adnan and E. Afshari, "A Passively Coupled Harmonic VCO Topology with High Output Power and Efficiency," submitted to the IEEE Journal of Solid-State Circuits, 2014.

  6. M. Adnan and E. Afshari, "Efficient Microwave & Millimeter-Wave Frequency Multipliers using Nonlinear Passive Resonators," submitted to the IEEE Transactions on Microwave Theory and Techniques, 2014.

  7. M. Adnan and E. Afshari, "A 105GHz VCO with 9.5% Tuning range and 2.8mW Peak Output Power in a 65nm Bulk CMOS Process," invited to the special issue of the IEEE Transactions on Microwave Theory and Techniques, March 2014.

  8. R. Han, Y. Zhang, Y. Kim, D. Y. Kim, H. Shichijo, E. Afshari, and K. K. O, "Active Terahertz Imaging Using Schottky Diodes in CMOS: Array and 860-GHz Pixel," IEEE Journal of Solid-State Circuits, Oct. 2013.

  9. S. Saadat, H. Mosallaei, and E. Afshari, "Radiation-Ecient 60 GHz On-Chip Dipole Antenna Realised by Reactive Impedance Metasurface," IET Microwaves, Antennas & Propagation, vol. 7, issue 2, July 2013.

  10. S. Saadat, M. Adnan H. Mosallaei, and E. Afshari, "Composite Metamaterial and Meta- surface Integrated With Non-Foster Active Circuit Elements: A Bandwidth-Enhancement Investigation," IEEE Transactions on Antennas and Propagation, vol. 61, issue 3, March 2013.

  11. R. Han and E. Afshari, "A CMOS High-Power Broadband 260-GHz Radiator Array for Spectroscopy," invited to the special issue of the IEEE Journal of Solid-State Circuits, Dec. 2013.

  12. R. Han and E. Afshari, "High-Power Broadband THz Source Design in CMOS: A Passive THz Frequency Doubler," to appear in the Special Issue for RFIC, IEEE Trans. on Microwave Theory and Techniques (T-MTT), 2013.

  13. Y. Tousi, O. Momeni, and E. Afshari, "A Novel CMOS High-Power Terahertz VCO Based on Coupled Oscillators: Theory and Implementation," invited to the special issue of the IEEE Journal of Solid-State Circuits, vol. 47, no. 12, Dec. 2012.

  14. R. Han, Y. Zhang, Y. Kim, D. Y. Kim, H. Shichijo, E. Afshari, and K. K. O, "Terahertz CMOS Image Sensors Using Schottky Barrier Diodes for Lens-less Portable Applications," submitted to IEEE Journal of Solid-State Circuits, 2012.

  15. S. Saadat, M. Adnan, H. Mosallaei and E. Afshari, "A Loop-Based Composite MetaMaterial Integrated with Non-Foster Active Circuit Elements: A Bandwidth-Enhancement Investigation" to appear in IEEE Transactions on Electron Devices, Dec. 2012.

  16. Y. Tousi, V. Pourahmad, and E. Afshari, "Delay Coupled Oscillators for Frequency Tuning of Solid-State Terahertz Sources," Physical Review Letters, June 2012.

  17. G. Li and E. Afshari, "A Low-Phase-Noise Wide-Tuning-Range Oscillator Based on Resonant Mode Switching," IEEE Journal of Solid-State Circuits, vol. 47, no. 6, June 2012.

  18. W. Lee, M. Adnan, O. Momeni, and E. Afshari, "A Nonlinear Lattice for High Am-plitude, Picosecond Pulse Generation in CMOS," IEEE Transactions on Microwave Theory and Techniques, vol. 60, no. 2, Feb. 2012.

  19. W. Lee and E. Afshari, "A CMOS Noise Squeezing Amplifier," IEEE Transactions on Microwave Theory and Techniques, vol. 60, no. 2, Feb. 2012.

  20. S. Saadat, M. Adnan, H. Mosallaei, and E. Afshari, "A Loop-Based Composite Metamaterial Integrated with Non-Foster Active Circuit Elements: A Bandwidth-Enhancement Investigation" submitted to IEEE Transactions on Electron Devices, 2011.

  21. O. Momeni and E. Afshari, "High Power millimeter-Wave Amplifier Design: A Systematic Approach," to be submitted to IEEE Journal of Solid-State Circuits, 2011.

  22. O. Momeni and E. Afshari, "A Terahertz Broadband Traveling-Wave Frequency Multiplier on CMOS," invited to the special issue of the IEEE Journal of Solid-State Circuits, vol. 46, no. 12, Dec. 2011 (pdf).

  23. Y. Tousi and E. Afshari, "A Miniature 2mW 4b 1.2GS/s Delay-Line Based Data Converter," IEEE Journal of Solid-State Circuits, vol. 46, no. 10, Oct. 2011 (pdf).

  24. O. Momeni and E. Afshari, "High Power Terahertz and Sub-millimeter-Wave Oscillator Design: A Systematic Approach," IEEE Journal of Solid-State Circuits, vol. 46, no. 3, pp. 583-597, March 2011 (pdf).

  25. W. Lee and E. Afshari, "Low Noise Parametric Resonant Amplifier," IEEE Transaction on Circuits and Systems I: Regular Papers, vol.58, no.3, pp.479-492, March 2011 (pdf).

  26. G. Li and E. Afshari, "A Distributed Dual-Band LC Oscillator Based on Mode Switching," IEEE Transactions on Microwave Theory and Techniques, vol.59, no.1, pp.99-107, Jan. 2011 (pdf).

  27. O. Momeni and E. Afshari, "A 10-Gb/s Inductor-less Transimpedance Amplifier," IEEE Transaction on Circuits and Systems II: Express Briefs, vol.57, no.12, pp.926-930, Dec. 2010.

  28. Y. Tousi and E. Afshari, "2-D Electrical Interferometer: A Novel High Speed Quantizer," IEEE Transactions on Microwave Theory and Techniques, vol.58, no.10, pp.2549-2561, Oct. 2010 (pdf).

  29. G. Li and E. Afshari, "A Low-Phase-Noise Multi-Phase Oscillator Based on Left- handed LC-Ring," IEEE Journal of Solid-State Circuits, vol.45, no.9, pp.1822-1833, Sept. 2010 (pdf).

  30. W. Lee and E. Afshari, "Distributed Parametric Resonator: A Passive CMOS Frequency Divider," IEEE Journal of Solid-State Circuits, vol.45, no.9, pp.1834-1844, Sept. 2010 (pdf).

  31. G. Lilis, J. Park, W. Lee, H. S. Bhat and E. Afshari, "Harmonic Generation Using Non- linear LC Lattices," IEEE Transactions on Microwave Theory and Techniques, vol.58, no.7, pp.1713-1723, July 2010 (pdf).

  32. H. S. Bhat, W. Lee, G. Lilis, and E. Afshari, "Steady-State Perturbative Theory for Nonlinear Circuits," Journal of Physics A: Mathematical and Theoretical, vol. 43, no. 20, pp. 205101-205101-16, May 2010 (pdf).

  33. O. Momeni and E. Afshari, "Electrical Prism: a High Quality Factor Filter for mm- Wave and Terahertz Frequencies," IEEE Transactions on Microwave Theory and Tech- niques, vol.57, no.11, pp.2790-2799, Nov. 2009 (pdf).

  34. G. Li, Y. Tousi, A. Hassibi, and E. Afshari, "Delay-line Based Analog-to-Digital Converters," IEEE Transaction on Circuits and Systems II: Express Briefs, vol.56, no.6, pp.464-468, June 2009 (pdf).

  35. E. Afshari and H. S. Bhat, "Nonlinear Constructive Interference in Electrical Lattices," Physical Review E, vol. 77, no. 6, pp.066602-066602-13, June 2008 (pdf).

  36. E. Afshari, H. S. Bhat, and A. Hajimiri, "Ultrafast Analog Fourier Transform Using 2-D LC Lattice," IEEE Transaction on Circuits and Systems I: Regular Papers, vol.55, no.8, pp.2332-2343, Sept. 2008 (pdf).

  37. E. Afshari, H. S. Bhat, A. Hajimiri, and J. E. Marsden, "Extremely Wideband Signal Shaping using One and Two Dimensional Non-Uniform Nonlinear Transmission Lines," Journal of Applied Physics, vol. 99, no. 5, pp.054901-054901-16, Mar 2006 (pdf).

  38. E. Afshari and A. Hajimiri, "A Non-Linear Transmission Lines for Pulse Shaping in Silicon," IEEE Journal of Solid-State Circuits, vol.40, no.3, pp. 744- 752, March 2005 (pdf).

Selected Conference Publication

  1. R. Han, C. Jiang, A. Mostajeran, M. Emadi, H. Aghasi, H. Sherry, A. Cathelin, and E. Afshari "A 320GHz Phase-Locked Transmitter with 3.3mW Radiated Power and 22.5dBm EIRP for Heterodyne THz Imaging Systems, " Proc. of IEEE International Solid-State Circuits Conference (ISSCC), 22-26 Feb. 2015.

  2. A. Mostajeran, M. Sharif-Bakhtiar and E. Afshari, "A 2.4GHz VCO with FoM of 190dBc/Hz at 10kHz 2MHz Offset Frequencies in 130nm CMOS Using an ISF Manipulation Technique," Proc. of IEEE International Solid-State Circuits Conference (ISSCC), 22-26 Feb. 2015.

  3. Y. Tousi and E. Afshari, "A Scalable Terahertz 2D Phased Array with +17dBm of EIRP at 338GHz in 65nm Bulk CMOS," Proc. of IEEE International Solid-State Circuits Conference (ISSCC), 9-13 Feb. 2014.

  4. M. Adnan and E. Afshari, "A 247-to-263.5GHz VCO with 2.6mW Peak Output Power and 1.14% DC-to-RF Eciency in 65nm Bulk CMOS," Proc. of IEEE International Solid-State Circuits Conference (ISSCC), 9-13 Feb. 2014.

  5. E. Afshari and R. Han, "Progress Towards mW-Power Generation in CMOS THz Signal Sources," Proc. of Microwave Integrated Circuits Conference (EuMIC), 6-8 Oct. 2013.

  6. M. Adnan and E. Afshari, "A 105GHz VCO with 9.5% Tuning Range and 2.8mW Peak Output Power Using Coupled Colpitts Oscillators in 65nm Bulk CMOS," Proc. of IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2-4 June 2013.

  7. R. Han and E. Afshari, "A 260GHz Broadband Source with 1.1mW Continuous-Wave Radiated Power and EIRP of 15.7dBm in 65nm CMOS," Proc. of IEEE International Solid-State Circuits Conference (ISSCC), 17-21 Feb. 2013.

  8. G. Li and E. Afshari, "A Low Phase Noise Wide Tuning Range Quadrature Oscillator in 65nm CMOS," Proc. of IEEE Custom Integrated Circuits Conference (CICC), 9-12,Sept. 2012.

  9. R. Han and E. Afshari, "A broadband 480-GHz passive frequency doubler in 65-nm bulk CMOS with 0.23mW output power," Proc. of IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 17-19 June 2012.

  10. Y. Tousi and E. Afshari, "A 283-to-296GHz VCO with 0.76mW Peak Output Power in 65nm CMOS," Proc. of IEEE International Solid-State Circuits Con- ference (ISSCC), 2012.

  11. R. Han, Y. Zhang, Y. Kim, S. Shichijo, E. Afshari and K. K. O, "860GHz and 280GHz Image Sensors Using Schottky-Barrier Diodes in 130-nm CMOS," Proc. of IEEE International Solid-State Circuits Conference (ISSCC), 2012.

  12. M. Adnan and E. Afshari, "A 120 GHz Frequency Tripler in 130 nm CMOS," to be submitted to Proc. of International Microwave Symposium (IMS), 2012.

  13. O. Momeni and E. Afshari, "A 220-275 GHz Traveling Wave Frequency Doubler with -6.6 dBm Power at 244 GHz in 65 nm CMOS," Proc. of IEEE International Solid-State Circuits Conference (ISSCC), pp.286-288, 20-24 Feb. 2011.

  14. O. Momeni and E. Afshari, "A High Gain 107 GHz Ampli er in 130 nm CMOS," Proc. of IEEE Custom Integrated Circuits Conference (CICC), 18-21 Sept. 2011.

  15. M. Adnan and E. Afshari, "A Low Conversion Loss Passive Frequency Doubler," Proc. of IEEE Custom Integrated Circuits Conference (CICC), 18-21 Sept. 2011.

  16. W. Lee and E. Afshari, "An 8 GHz, 0.45dB NF CMOS LNA employing noise squeezing," Proc. of IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 5-7 June 2011.

  17. S. Saadat, M. Farahani, H. Mosallaei, and E. Afshari, "Metamaterials Integrated with Active Electronic Circuits," Proc. of IEEE International Symposium on Antennas and Propagation, 3-8 July 2011.

  18. M. Adnan and E. Afshari, "Phase Matching using Bandgap Structures for Efficient Parametric Frequency Conversion," Proc. of European Microwave Conference, 9-14 Oct. 2011.

  19. M. Adnan and E. Afshari, "Bandwidth Enhancement of Passive Filters at mm-Wave Frequencies using Effective Negative Group Index (NGI) Structures," Proc. of IEEE International Symposium on Circuits and Systems(ISCAS), pp. 749-752 May 30-June 2 2010.

  20. W. Lee, F. Amoozegar, and E. Afshari, "Picosecond Pulse Generation on CMOS: De- sign Beyond Transistor Limits," Proc. of IEEE Radar Conference, 4-8 May 2009 (Best student paper award).

  21. Y. Tousi, G. Li, A. Hassibi, and E. Afshari, "A 1mW 4b 1GS/s delay-line based analog- to-digital converter," Proc. of IEEE International Symposium on Circuits and Systems(ISCAS), pp.1121-1124, 24-27 May 2009.

  22. O. Momeni and E. Afshari, "Electrical Prism: a High Quality Factor Filter for mm- Wave and Terahertz Frequencies," Proc. Of Asia-Pacific Microwave Conference (APMC), 16-20 Dec. 2008.

  23. E. Afshari, H. S. Bhat, X. Li, and A. Hajimiri, "Electrical Funnel: A Broadband Signal Combining Method," Proc. Of IEEE International Solid-State Circuits Conference(ISSCC), pp.751-760, 6-9 Feb. 2006.

  24. E. Afshari and A. Hajimiri, "A Non-Linear Transmission Lines for Pulse Shaping in Silicon," Proc. of Custom Integrated Circuits Conference (CICC), pp. 91- 94, 21-24 Sept. 2003 (Best paper award).

BOOK CHAPTERS

  1. E. Afshari and A. Komijani, "Power Amplifier Design," in mm-Wave Silicon Technology, Springer, January 2008.

INVITED TALKS

  1. IEEE 802.15 Standard Meeting Nov. 2012

  2. European Microwave Conference Nov. 2012

  3. University of Toronto Oct. 2012

  4. IEEE Custom Integrated Circuits Conference Sept. 2012

  5. IEEE Joint Chapters Meeting Apr. 2012

  6. DARPA DSRC Workshop Feb. 2012

  7. Berkeley Wireless Research Center Oct. 2011

  8. University of Southern California Sept. 2011

  9. Inphi Corporation Sept. 2011

  10. Intel Aug. 2011

  11. University of Texas at Dallas July 2011

  12. CMOS Emerging Technologies May 2011

  13. Syracuse University Feb. 2011

  14. Sharif University of Science and Technology Jan. 2011

  15. University of Tehran Jan. 2011

  16. Raytheon Dec. 2010

  17. IBM Nov. 2010

  18. Tufts University Oct. 2010

  19. The University of Massachusetts Amherst Apr. 2010

  20. University of California at San Diego Apr. 2010

  21. Jet Propulsion Laboratory March 2010

  22. The Center for Circuit & System Solutions (C2S2) Feb. 2010

  23. Lockheed Martin Corporation Jan. 2010

  24. Tehran University Jan. 2010

  25. Sharif University of Science and Technology Dec. 2009

  26. Columbia University Oct. 2009

  27. University of Texas at Austin Apr. 2009

  28. Cortina Systems, Ottawa ON March 2008

  29. Qualcomm, San Diego CA July 2007

  30. SIAM Nonlinear Waves and Coherent Structures Sept. 2006

  31. Massachusetts Institute of Technology May 2006

  32. University of California, Berkeley Apr. 2006

  33. California Institute of Technology Apr. 2006

  34. Carnegie Mellon University Apr. 2006

  35. Cornell University Feb. 2006