Contact
Room: 43.2.409
Tel. 0731 - 50 26225
ahmed.abdelaal(at)uni-ulm.de
Teaching
Integrated Analog Circuits
Project - Analog CMOS Circuit Design
M.Sc. Ahmed Abdelaal
Ahmed Abdelaal received the B.Sc degree in Electronics Engineering from the German University in Cairo (GUC), Egypt, 2016. Afterwards, he received the M.Sc degree in 2018 from Ulm University, Germany, where he is currently working towards his PhD under the supervision of Professor Dr.-Ing. Maurits Ortmanns. His research interest is high-speed continuous-time sigma-delta modulators.
Projects
Ultra-low Power, Wide Bandwidth Continuous-time Sigma Delta Analog to Digital Converter Design
A. Abdelaal, M. Pietzko: Continues time delta sigma modulators (CTDS) have recently become the key device for broadband wireless and wireline communication. Due to there built in anti-aliasing filter and the ability to have relaxed sampling requirements the CTDS modulators are preferred over there discrete time counterparts ... [more]
Studentische Arbeiten
[mt] = Masterarbeit, [rp] = Bachelorarbeit
Aktuelle Arbeiten
- Omar Ismail
Dual quantization CT-Sigma-Delta ADC for wide-band applications [mt]
Publications
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)
May 2021
FIR filter with Symmetric Non-Equal Coefficients for CT Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Daegu, Korea (Online)
May 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)
May 2021
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)
May 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
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
October 2020
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
October 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
October 2020
FIR DACs in CT Incremental Delta-Sigma Modulators
IEEE International Symposium on Circuits and Systems (ISCAS), Sevilla, Spain
October 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.
May 2019
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.
May 2019
Research assistant
