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Shahin Jafarabadi-Ashtiani
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| School of Electrical & Computer Engineering |
| Assistant Professor |
| Email: sashtiani [at] ut.ac.ir |
| Personal Website: |
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| Courses |
Graduate:
ECE 257: Linear Analog Integrated Circuits
ECE 489: Integrated Data converters and analog filters
ECE 648: Special topics on Electronics
Undergraduate:
ECE 89: Electronics III
ECE 88: Electronics II
ECE 87: Electronics I
Electronics I&II Lab
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| Current Researches |
Analog front-end circuits for processing of bio-signals
Large-area electronics: Active-Matrix Organic Light-Emitting Diode Displays and Biosensors
Low-power data conversion
High-speed analog-to-digital and digital to analog converters
Ultra-Low-power, low-bandwidth RF circuits for biomedical telemetry systems
Device modeling
Smart Sensors
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| Education |
PhD: University of Waterloo, Canada
MSc: University of Tehran
BSc: University of Tehran
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| Selected Publications |
Published Journal Papers:
1. J. Ashtiani, A. Nathan, "A driving scheme for active matrix organic light-emitting diode displays based on current feedback," IEEE J. of Display Technology, vol. 5, no. 7, pp. 257-264, July 2009
2. A. Norouzpour, A. Mirhaj, S. J. Ashtiani, and O. Shoaei, "A Novel Low Power 1GS/sec S&H Architecture with Improved Analog Bandwidth," IEEE Trans. Circuits Syst. II, vol. 55, no. 10, pp. 971-975, Oct. 2008
3. M. Rezaei, E. Jhian-Tabasi, and S. J. Ashtiani, "Slew-rate enhancement method for folded-cascode amplifiers," IET Electronics Letters, vol. 44, no. 21, pp. 1226-1228, Oct. 2008
4. S. J. Ashtiani, G. R. Chaji, and A. Nathan, "AMOLED pixel circuit with electronic compensation of luminance degradation," IEEE J. of Display Technology, vol. 3, no. 1, pp. 36-39, March 2007
5. S. J. Ashtiani, A. Nathan, "A driving scheme for active matrix organic light-emitting diode displays based on feedback," IEEE J. of Display Technology, vol. 2, no. 3, pp. 258-264, Sept 2006
6. S. J. Ashtiani, P. servati, D. Striakhilev, and A. Nathan, "A 3-TFT Current-Programmed Pixel Circuit for Active-Matrix Organic Light-Emitting Diode Displays" IEEE Transaction of Electron Devices, vol. 52, no. 7, pp. 1514-1518, July 2005
7. S. J. Ashtiani, P. Servati, and A. Nathan, "An active-matrix organic light-emitting diode display driver based on second-generation current conveyor," IEE Electronics Letters, vol. 40, Issue 19, pp 1178-1179, 16 Sept. 2004
8. S. J. Ashtiani, O. Shoaei, S. M. Rezaul Hasan and A. Jannesari, "On the parasitic-sensitivity of switched-capacitor summing-integrator structure for SD modulators," IEEE Trans. Circuits Syst. II, vol. 50, pp 634-640, Sept. 2003.
9. A. Nathan, G.R. Chaji, and S. J. Ashtiani, "Driving schemes for a-Si and LRPS AMOLED displays," IEEE J. of Display Technology, vol. 1, no. 2, pp. 267-277, Dec. 2005
10. S. Alexander, P. Servati, G.R. Chaji, S. J. Ashtiani, R. Hung, D. Striakhilev, K. Sakariya, A. Kumar, A. Nathan, C. Church, J. Wzorek, and P. Aresnault, "Pixel circuits and drive schemes for glass and elastic AMOLED displays," SID J. of Display, pp. 587-595, July 2005
Selected Published Conference Papers:
1. S. J. Ashtiani, A. Nathan, "A driving scheme for AMOLED display based on current feedback," Proceeding of IEEE Custom Integrated Circuits Conference (CICC) 2006, pp.289-292, Sept. 2006
2. S. J. Ashtiani, and A. Nathan, "Reducing charge injection in active-matrix a-Si TFT pixels," Proc Annu. Meeting LEOS 2006, pp. 440-441, November 2006.
3. A. Nathan, D. Striakhilev, R. Chaji, S. J. Ashtiani,, C.-H. Lee, A. Sazonov, J. Robertson, and W. Milne, "Backplane requirements for active matrix organic light emitting diode displays," MRS Symp. Proc, Vol. 910, pp. 373-388, 2006.
4 S. J. Ashtiani, and A. Nathan, "A fast driving scheme for a-Si:H AMOLED displays based on voltage feedback," Proc Annu. Meeting LEOS 2005, pp. 925-926, October 2005
5. S. Jafarabadi Ashtiani, G. Chaji, S. Sambandan, D. Striakhilev, P. Servati, and A. Nathan, "A new driving method for a-Si AMOLED displays based on voltage feedback," SID Symposium Digest of Technical Papers Volume 36, Issue 1, pp. 316-319, May 2005
6. S. Jafarabadi Ashtiani, P. Servati, A. Nathan, "A high-speed driver for current-programmed-active-matrix OLED displays," The 3rd International IEEE-NEWCAS Con., pp. 400-403, 19-22 Jun, 2005
7. G.R. Chaji, S.J. Ashtiani, S. Alexander, R. Huang, D. Striakhilev, P. Servati, K. Sakariya, A. Kumar, A. Nathan "Pixel Circuits and Drive Schemes for Large-Area a-Si AMOLED, " in IDMC, Taiwan, Feb. 2005
8. N. Safavian, G.R. Chaji, S. J. Ashtiani, A. Nathan, and J. A. Rowlands, "Self-compensated a-Si:H detector with current-mode readout circuit for digital x-ray fluoroscopy," IEEE MIDWEST, Cincinnati, USA, August 2005
9. A. Nathan, S. Alexander, K. Sakariya, P. Servati, D. Striakhilev, S. Tao, A. Kumar, S. Sambandan, S. Jafarabadi ashtiani, Y. Vygranenko, C. Church, J. Wzorek, and P. Arsenault, "Stable AMOLED displays using a-Si backplanes," SID Symposium Digest, pp. 1508-1511, May 2004
Patent Applications:
1. Nathan, A., Jafarabadi Ashtiani, S., Servati, P., and Sakariya, K., Pixel driver circuit. US patent application 20070182671.
2. Vygranenko, Y., JafarabadiAshtiani, S., and Nathan, A., Circuit and method for driving an array of light emitting pixels. US patent application 20070080908.
3. Nathan, A., Jafarabadi Ashtiani, S., and Chaji, G.R., Compensation technique for luminance degradation in electro-luminance devices. US patent application 20070063932.
4. Nathan, A., Jafarabadi Ashtiani, S., and Chaji, G.R., Method and system for driving a pixel circuit in an active matrix display. US patent application 20070008252
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