Ayman Hassan Abdel Aziz Hassan

Associate Professor at Electronics and Communications Engineering

Career Information

Academic Information

Brief

Ayman H. Ismail (S'02-M'08) received the B.Sc. and M.Sc. degrees both in electrical engineering from Ain Shams University, Cairo, Egypt, in 1998 and 2002, respectively. He received the Ph.D. degree from the University of Waterloo, Waterloo, ON, Canada, in 2007.

From 1998 to 2002, he worked as a research assistant and a teaching assistant at the electronics and communications engineering department of Ain Shams University. In 2001, he joined AIAT VLSI design house as a part-time senior analog mixed-signal design engineer. From 2003 to 2007, he was a research assistant at the VLSI Lab, of the University of Waterloo. During the winter of 2005, he had an internship at Texas Instruments, Dallas, Texas, where he was involved in the design of digital PLLs, and low noise voltage controlled oscillators. From 2007 to 2009, he was an analog IC design engineer with the IP division of Gennum Corporation (Snowbush IP), Toronto, ON, Canada, working on high speed ADCs and PCIe/SATA/USB3SERDES. He has been, also, with Si-ware Systems, where he developed innovative high-performance interface ASICs for inertial sensors that went to mass production. Since 2017, Dr. Ismail is an associate professor at the ECE Dept. of Ain Shams University.

Dr. Ismail has more than 25 IEEE Journal and conference publications, one published book, and 5 US patents. He is, also, the recipient of the overall winning design award and the analog/mixed-signal design award from Mentor Graphics, in 2002. Dr. Ismail research interests include high performance analog-to-digital converters, analog filters, interface circuits for sensors, and sigma-delta techniques, and RF tags.

Awards

2004-2003 International Graduate Student Award
2003 University of Waterloo Graduate Scholarship (received 2 times)
2002 Overall Winning Design Prize, 2001-2002 Mentor Graphics Higher Education Program Student Design Contest
2002 IC / Analog - Mixed Signal Design Prize, 2001-2002 Mentor Graphics Higher Education Program Student Design Contest
1993-1998 Scholarship for academic distinction, Ain Shams University, Cairo, Egypt

Articles

A. Ismail, "Designing closed-loop MEMS-based capacitive inertial sensors," EE Times article, March 2013.

Publications

Journal Papers:

1. A. Ismail and M. Elmasry, “A 6-bit 1.6-GS/s Low Power Wide Bandwidth Flash ADC Converter in 0.13-µm CMOS Technology,” IEEE J. of Solid-State Circuits (JSSC), vol. 43, no. 9, pp. 1982-1990, Sept. 2008.
2. A. Ismail and M. Elmasry, “Analysis of The Flash ADC Bandwidth-Accuracy Tradeoff in Deep Submicron CMOS Technologies,” IEEE Trans. Circuits and Syst II (TCAS-II), vol. 55, no. 10, pp. 1001-1005, Oct. 2008.
3. A. Ismail and M. El-Nafarawi, “Energy-efficient successive-approximation-register based capacitive interface for pressure sensors,” IET Electronics Letters, vol. 51, issue no. 24, pp. 2007-2009, Nov. 2015.
4. A. Ismail and I. Mostafa, “A Process-Tolerant, Low-Voltage, Inverter-Based OTA for Continuous-Time Σ-Δ ADC,” IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 24, issue no. 9, pp. 2911- 2917, Sept. 2016.
5. A. Badawy and A. Ismail ,“ Inverter-based noise-shaping SAR ADC for low-power applications ”, Microelectronics Journal, Volume 144, February 2024.
6. A. Hamed and A. Ismail, "Graphical Design Approach for UWB Stacked CG LNA Using Inversion Coefficient" Electronics 13, no. 9: April 2024.
7. A. H. Ismail, "On the System-Level Design of Noise-Shaping SAR Analog-to-Digital Converters" Electronics 13, no. 20: Oct. 2024
8. A. F. Allam, H. A. Omran and A. H. Ismail, “A Noise-Shaping SAR-Based Capacitance-to-Digital Converter for Sensing Applications,” Electronics 14, no.7: Mar. 2025.


Peer-Reviewed Conference Papers:

1. A. Hassan, K. Sharaf, H. El-Ghitani and H. F. Ragai, ”A New Low Power Transconductor for GM-C filters,” in Proc. IEEE Int. Symp. Circ. and Syst. (ISCAS), pp. IV 249-252, Phoenix, Arizona, USA, May 2002.
2. A. Hassan, K. Sharaf, H. El-Ghitani and H. F. Ragai, “Design and Implementation of a GM-C filter for BLUETOOTH,” in Proc. IEEE Midwest Symp. Circ. and Syst. (MWCAS), pp. II 629-632 Tulsa, Oklahoma, USA, Aug. 2002.
3. A. H. Ismail and Mohamed I. Elmasry, “Design of MOS Current Mode Logic,” Micronet Annual Workshop, Toronto, Canada, Sept. 2003.
4. A. H. Ismail and Mohamed I. Elmasry, “A Low Power Design Approach for MOS Current Mode Logic,” in Proc. IEEE Int. Conf. System-on-Chip (SOCC), pp. 143 - 146, Portland, OR, USA, Sept, 2003.
5. A. H. Ismail and Mohamed I. Elmasry, “On the Design of Low Power MCML based ring oscillators,” in Proc. IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), pp. 2383-2386, Niagara Falls, Ontario, Canada, May 2004.
6. A. H. Ismail and Mohamed I. Elmasry, “Applications of Integer Linear Programming in the Design of Decimation Filters for Multi-Standard Transceivers,” in Proc. IEEE Int. Conf. Electrical, Electronics, and Computer Engineering (ICEEC), pp. 690 - 693, Cairo, Egypt, Sept. 2004.
7. A. H. Ismail and M. Elmasry, “Analog-to-Digital Conversion for SONET OC-192,” in Proc. IEEE Int. Conf. System-on-Chip (SOCC), pp. 41-44, Santa Clara, CA, USA, Sept. 2004.
8. A. H. Ismail and M. Elmasry, “A Termination Technique for The Averaging Network of Flash ADC’s,” in Proc. IEEE Int. Symp. Circ. and Syst. (ISCAS), pp. 3321-3324, Kos, Greece, May 2006.
9. A. Elsayed, A. Elshennawy, A. Elmallah, A. Shaban, B. George, M. Elmala, A. Ismail, A. Wassal, M. Sakr, A. Mokhtar, M. Hafez, A. Hamed, M. Saeed, M. Samir, M. Hammad, M. Elkhouly, A. Kamal, M. Rabieah, A. Elghufaili, S. Shaibani, I. Hakami, T. Alanazi, “A Self-Clocked ASIC Interface for MEMS Gyroscope with 1m°/s/√Hz Noise Floor,” in Proc. IEEE Custom Integrated Circuits Conf.(CICC), USA, Sept. 2011.
10. A. Ismail, B. George, A. Elmallah, A. Mokhtar, M. Abdelazim , M. Elmala, A. Elshennawy, A. Omar,M. Saeed, I. Mostafa, A. Elsayed, “A High Performance MEMS Based Digital-Output Gyroscope,” in Proc. Int. Conf. Solid-State Sensors, Actuators and Microsystems (Transducers), Barcelona, Spain, June 2013.
11. A. Essawy, A. Ismail, M. Dessouky, “A 0.75V Continuous-Time Sigma Delta Analog-to-Digital Converter in CMOS Technology,” in Proc. IEEE Ninth International Caribbean Conference on DEVICES, CIRCUITS and SYSTEMS (ICCDCS), México, April 2014.
12. A.Essawy, A. Ismail, “A Low Voltage Inverter-Based Continuous-Time Sigma Delta Analog-to-Digital Converter in 65nm CMOS technology,” in Proc. IEEE 13th Faible Tension Faible Consommation (FTFC), Monaco, May 2014.
13. A. Omar , A. Elshennawy, A. Ismail, M. Nagib, M. Elmala, A. Elsayed, “A new versatile hardware platform for closed-loop gyro evaluation,” in Proc. 2015 DGON Inertial Sensors and Systems (ISS), Karlsruhe, Germany, pp. 1-14, Sept. 2015.
14. I. Mostafa and A. Ismail,“ A Tunable Inverter-Based, Low-Voltage OTA for Continuous-Time ΣΔ ADC,” in Proc. 2015 28th IEEE International System-on-Chip Conference (SOCC), Beijing, China, pp. 74 – 77, Sept. 2015.
15. A. Ismail, K. Ashraf , A. Metawea , I. Mostfa , A. Saeed , E. Helal , M. Essawy ,M. Abdelazim , M. Ibrahim , R. Raafat , E. Abdelbary , I. Alaa , M. Nabil ,A. Mansour , B. Ibrahim , A. Elsayed, “A high-performance self-clocked digital-output quartz gyroscope, ” in Proc. 2015 IEEE Sensors, Busan, South Korea, pp. 1-4, Nov. 2015.
16. A. Walid and A. Ismail, “A 14-bit low-power interface circuit for piezo-resistive pressure sensors,” in Proc. IEEE 27th International Conference on Microelectronics (ICM), Casablanca, Morocco, pp. 166 – 169, Dec. 2015.
17. A. Ismail and M. El-Nafarawi, "A Low-Energy SAR-Based Capacitance-to-Digital Converter for Pressure Sensors: System Analysis, Design and Calibration," in Proc. of 2016 IEEE 59th International Midwest Symposium on Circuits and Systems (MWSCAS), Abu Dhabi, pp.671-674, Oct. 2016.
18. A. H. Ismail and A. Elsayed, "∑-Δ based force-feedback capacitive micro-machined sensors: Extending the input signal range," 2017 IFIP/IEEE International Conference on Very Large-Scale Integration (VLSI-SoC), Abu Dhabi, United Arab Emirates, 2017, pp. 1-6.
19. A. Omar, A. Elshennawy and A. Ismail, "Analysis and Simulation of Phase Errors in Quadrature Cancellation Techniques for MEMS Capacitive Gyroscopes," 2018 DGON Inertial Sensors and Systems (ISS), Braunschweig, Germany 2018, pp. 1-17.
20. A. Omar, A. Elshennawy, M. AbdelAzim and A. H. Ismail, "Analyzing the Impact of Phase Errors in Quadrature Cancellation Techniques for MEMS Capacitive Gyroscopes," 2018 IEEE SENSORS, New Delhi, India, 2018, pp. 1-4.
21. A. Safwat and A. Ismail, "A Low-Power Capacitance-to-Voltage Converter For MEMS Capacitive Sensors," 2019 31st International Conference on Microelectronics (ICM), Cairo, Egypt, 2019, pp. 154-157.
22. A. Safwat and A. Ismail, "A General Purpose Single-Slope MEMS Capacitive Sensors Interface Circuit For IoT Applications," 2020 18th IEEE International New Circuits and Systems Conference (NEWCAS), Montreal, QC, Canada, 2020, pp. 1-4.
23. M. Gad, A. Elshennawy and A. Ismail, "A Design Method for Δ∑ Force-Feedback Accelerometer Interface Systems," 2020 18th IEEE International New Circuits and Systems Conference (NEWCAS), Montreal, QC, Canada, 2020, pp. 5-8.
24. A. H. Mahmoud and A. H. Ismail, "An Inductor-less Current-Reuse CS LNA with Resistive-Feedback for Low-Noise Applications," 2023 International Microwave and Antenna Symposium (IMAS), Cairo, Egypt, 2023, pp. 127-130.
25. A. El-Hinnawey and A. H. Ismail, "A Design Aid Tool for Asynchronous SAR ADCs," 2024 14th International Conference on Electrical Engineering (ICEENG), Cairo, Egypt, May 2024, pp. 412-416.


Granted US Patents:

1. Ahmed Mokhtar, Ahmed Elamllah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ayman Elsayed "Interface for MEMS Inertial Sensors", granted US patent number US 8,476,970 B2, Jul. 2, 2013
2. Ayman Elsayed , Ahmed Elamllah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ahmed Mokhtar "Interface for MEMS Inertial Sensors", granted US patent number US 8,508,290 B2, Aug. 13, 2013
3. Ayman Ismail, Ahmed Elshennawy, Ahmed Mokhtar, Ayman Elsayed "Electronic compensation of capacitive micro-machined sensors parasitic modes in force-feedback interface systems", granted US patent number US 8,872,683 B2, Oct. 28, 2014
4. Ahmed Elamllah, Ahmed Elshennawy, Ahmed Shaban, Botros George, Mostafa Elmala, Ayman Ismail, Mostafa Sakr, Ahmed Mokhtar, Ayman Elsayed "Interface for MEMS Inertial Sensors", granted US patent number US 9,013,233 B2 ,Apr. 21, 2015.
5. Ayman Ismail, Botros George, Ayman Elsayed, “Successive Approximation Analog- to-Digital Converter With Nonlinearity Compensation” granted US patent No. US 10,917,105 B1, Feb. 9 , 2021.