Institut für Mikroelektronik

M.Sc. Ahmed Abdelaal

Ahmed Abdelaal erhielt 2016 den B. Sc-Abschluss in Elektrotechnik von der Deutschen Universität Kairo (GUC), Ägypten. Anschließend erhielt er 2018 den M.Sc.-Abschluss von der Universität Ulm, Deutschland, wo er derzeit unter der Leitung von Professor Dr. Ing. an seiner Promotion arbeitet. Maurits Ortmanns. Sein Forschungsinteresse gilt Hochgeschwindigkeits-Sigma-Delta-Modulatoren mit kontinuierlicher Zeit.

Studentische Arbeiten

[mt] = Masterarbeit, [rp] = Bachelorarbeit

Aktuelle Arbeiten

Abgeschlossene Arbeiten

  • Santiago Noriega-Alvarez
    Negative-Resistance Assisted Amplifier [mt]
  • Fouad Elbadry
    Automated Opamp design using Cadence-Virtuoso Optimization Tool [rp]
  • Omar Ismail
    Dual quantization CT-Sigma-Delta ADC for wide-band applications [mt]

Publikationen

2024

9.
Pietzko, M.; Ungethüm, J.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
A 600MS/s 10-bit SAR ADC with unit via-based delta-length C-DAC in 22nm FDSOI
IEEE International Symposium on Circuits and Systems (ISCAS), Singapore
Mai 2024
DOI:10.1109/ISCAS58744.2024.10558087

2023

8.
Ungethüm, J.; Pietzko, M.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
A Chopped 6-bit 1.6 GS/s SAR ADC Utilizing Slow Decision Information in 22 nm FDSOI
ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC)
September 2023
DOI:10.1109/ESSCIRC59616.2023.10268704

2022

7.
Mokhtar, M. A.; Abdelaal, A.; Sporer, M.; Becker, J.; Kauffman, J. G.; Ortmanns, M.
A 0.9-V DAC-Calibration-Free Continuous-Time Incremental Delta-Sigma Modulator Achieving 97-dB SFDR at 2 MS/s in 28-nm CMOS
IEEE Journal of Solid-State Circuits, Volume: 57, Issue: 11
November 2022
DOI:10.1109/JSSC.2022.3160325

2021

6.
Abdelaal, A.; Pietzko, M.; Mokhtar, M. A.; Kauffman, J. G.; Ortmanns, M.
FIR filter with Symmetric Non-Equal Coefficients for CT Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Daegu, Korea (Online)
Mai 2021
5.
Pietzko, M.; Wagner, J.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Daegu, Korea (Online)
Mai 2021
4.
Mokhtar, M. A.; Abdelaal, A.; Sporer, M.; Becker, J.; Kauffman, J. G.; Ortmanns, M.
A 0.9-V Calibration-Free 97dB-SFDR 2-MS/s Continuous­Time Incremental Delta-Sigma ADC Utilizing Variable Bit-Width Quantizer in 28nm CMOS
IEEE Custom Integrated Circuits Conference (CICC), Texas, USA (Virtual)
April 2021

2020

3.
Abdelaal, A.; Kauffman, J. G.; Mokhtar, M. A.; Ortmanns, M.
A Comparative Study of ISI Errors in Different DAC Structures for CT Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Sevilla, Spain
Oktober 2020
2.
Mokhtar, M. A.; Vogelmann, P.; Abdelaal, A.; Kauffman, J. G.; Ortmanns, M.
FIR DACs in CT Incremental Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Sevilla, Spain
Oktober 2020

2019

1.
Jain, A.; Abdelaal, A.; Ortmanns, M.
Effective Filtering of Requantization Error in Dual Quantized CTDSM using FIR DAC
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-5.
Mai 2019

Research assistant

Ahmed Abdelaal