M.Sc. Paul Kässer
Paul Kässer studied Electrical Engineering at the University of Ulm where he received his B.Sc. degree in 2018 and his M.Sc. in 2021. The topic of his Master thesis was ''Development and Test of a Mixed-Signal Neural-Network Processing-Element''.
During his bachelor studies, he did an internship in India at TVS Motor Company in control engineering, where he built a motion-controlled robot arm. At the end of his master studies, he pursued another internship at Qualcomm, where he was working in the field of Custom Design Automation.
Since September 2021 he is working as research assistant towards the Ph.D. degree under the supervision of Prof. Dr.-Ing Maurits Ortmanns. His research area is the system-level modeling and optimization of Sigma-Delta ADCs.
Publications
2025
18.
P. Kässer and
M. Ortmanns,
"Performance Prediction of Incremental ΔΣ ADCs",
IEEE Open Journal of Circuits and Systems, vol. 6, pp. 424-431,
Sep.
2025.
| DOI: | 10.1109/OJCAS.2025.3606618 |
17.
P. Kässer,
O. Ismail,
J. Becker and
M. Ortmanns,
"Compensation of Excess Loop Delay in Continuous-Time Incremental ∆Σ ADCs",
IEEE International Symposium on Circuits and Systems (ISCAS), London, United Kingdom, pp. 1-5,
May
2025.
| DOI: | 10.1109/ISCAS56072.2025.11044169 |
16.
P. Kässer,
O. Ismail,
J. Becker and
M. Ortmanns,
"Does the Maximum Stable Amplitude depend on Reconstruction Filters in Incremental ∆Σ ADCs?",
IEEE International Symposium on Circuits and Systems (ISCAS), London, United Kingdom, pp. 1-5,
May
2025.
| DOI: | 10.1109/ISCAS56072.2025.11043924 |
15.
O. Ismail,
P. Kässer,
M. Sporer,
J. G. Kauffman and
M. Ortmanns,
"Incremental ∆Σ ADCs without Periodic Reset",
IEEE International Symposium on Circuits and Systems (ISCAS), London, United Kingdom, pp. 1-5,
May
2025.
| DOI: | 10.1109/ISCAS56072.2025.11043980 |
14.
J. Conrad,
S. Wilhelmstätter,
H. Mandry,
P. Kässer,
A. Abdelaal,
R. Asthana,
V. Belagiannis and
M. Ortmanns,
"PSumSim: A Simulator for Partial-Sum Quantization in Analog Matrix-Vector Multipliers",
IEEE International Symposium on Circuits and Systems (ISCAS), London, United Kingdom, pp. 1-5,
May
2025.
| DOI: | 10.1109/ISCAS56072.2025.11043442 |
13.
O. Ismail,
P. Kässer and
M. Ortmanns,
"Reducing the Impact of Non-Idealities on Incremental Δ∑ ADCs by Reconfiguration: A Review",
IEEE Custom Integrated Circuits Conference (CICC), Boston, MA, USA, pp. 1-8,
Apr.
2025.
| DOI: | 10.1109/CICC63670.2025.10983744 |
12.
M. Aziz,
P. Kässer,
S. Ibrahim and
M. Ortmanns,
"A Comparative Study of Incremental ΔΣ Analog-to-Digital Converter Architectures with Extended Order and Resolution",
MDPI Electronics 2025, 14, 372,
Jan.
2025.
| DOI: | 10.3390/electronics14020372 |
2024
11.
P. Kässer,
O. Ismail,
D. -. Wiens and
M. Ortmanns,
"Offset Cancellation in Incremental ∆Σ ADCs",
IEEE International Symposium on Circuits and Systems (ISCAS), Singapore,
May
2024.
| DOI: | 10.1109/ISCAS58744.2024.10557952 |
10.
P. Kässer,
S. Kaltenstadler,
J. Conrad,
J. Wagner,
O. Ismail and
M. Ortmanns,
"Stability Prediction of Δ∑ Modulators using Artificial Neural Networks",
IEEE International Symposium on Circuits and Systems (ISCAS), Singapore,
May
2024.
| DOI: | 10.1109/ISCAS58744.2024.10557868 |
9.
P. Kässer,
J. Wagner,
O. Ismail and
M. Ortmanns,
"Inner Transfer Functions in Incremental ΔΣ ADCs",
IEEE Transactions on Circuits and Systems II: Express Briefs,
Apr.
2024.
| DOI: | 10.1109/TCSII.2024.3390397 |
8.
O. Ismail,
P. Kässer,
J. G. Kauffman and
M. Ortmanns,
"Non-Ideal Reset in Incremental Delta-Sigma ADCs",
IEEE 22nd Interregional NEWCAS Conference Sherbrooke, Quebec, Canada,
Apr.
2024.
7.
O. Ismail,
P. Kässer,
J. G. Kauffman and
M. Ortmanns,
"DAC Element Mismatch Shaping Algorithms in Incremental Delta-Sigma ADCs",
IEEE International Symposium on Circuits and Systems (ISCAS), Singapore,
Jan.
2024.
| DOI: | 10.1109/ISCAS58744.2024.10558337 |
2023
6.
P. Kässer,
J. Wagner,
O. Ismail,
B. Driemeyer and
M. Ortmanns,
"Quantizer Gain in Incremental Delta-Sigma ADCs",
30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye, pp. 1-4,
Dec.
2023.
| DOI: | 10.1109/ICECS58634.2023.10382904 |
5.
B. Driemeyer,
P. Kässer,
H. Mandry,
D. -. Wiens and
M. Ortmanns,
"A Feasibility Study on a Switched-Capacitor Based PUF in 28 nm Technology",
30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye,
Dec.
2023.
| DOI: | 10.1109/ICECS58634.2023.10382899 |
4.
B. Driemeyer,
P. Kässer and
M. Ortmanns,
"Optimum Position of Digital DAC Error Correction relative to the Decimation Filter in ΔΣ ADCs",
30th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Istanbul, Turkiye,
Dec.
2023.
| DOI: | 10.1109/ICECS58634.2023.10382885 |
3.
P. Kässer,
O. Ismail,
J. Wagner,
R. Fischer and
M. Ortmanns,
"Frequency-Domain Analysis of Reconfigured Incremental ΔΣ ADCs on the Example of the Exponential Phase",
IEEE Transactions on Circuits and Systems I: Regular Papers,
Sep.
2023.
| DOI: | 10.1109/TCSI.2023.3310655 |
2.
P. Kässer,
O. Ismail,
C. Rudorf,
J. Wagner and
M. Ortmanns,
"Linear-Exponential I-DS ADCs: Analysis, Limitations and Higher Order",
IEEE International Symposium on Circuits and Systems (ISCAS), Monterey, CA, USA, pp. 1-5,
May
2023.
| DOI: | 10.1109/ISCAS46773.2023.10182215 |
2021
1.
J. Conrad,
B. Jiang,
P. Kässer,
V. Belagiannis and
M. Ortmanns,
"Nonlinearity Modeling for Mixed-Signal Inference Accelerators in Training Frameworks",
28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), pp. 1-4,
2021.
| DOI: | 10.1109/ICECS53924.2021.9665503 |
Research Assistent
