M.Sc. Jiazuo Chi

Since November 2014, Jiazuo Chi has been working as a research assistant, under the supervision of Prof. Ortmanns at the Institute of Microelectronics, University of Ulm. Jiazuo Chi completed his bachelor degree in Electronic and Communication Engineering at the University of Hong Kong in 2012, and his master study in System-on-Chip Design at the Royal Institute of Technology in 2014.

Currently, Jiazuo Chi’s research topic is design of blocker and jitter tolerant continuous-time Sigma-Delta analog-to-digital converter for wireless receivers.

Projects

Blocker and Jitter-Tolerant Continuous-Time Sigma-Delta ADCs

J. Chi: Continuous-time (CT) Sigma-Delta ADCs are a promising candidate for high-speed receiver applications, such as software-defined radio (SDR), due to its inherent anti-aliasing and signal filtering, potential lower power consumption because of less stringent requirements on Op-Amps, and easy reconfigurability ... [ more]

Student Theses

[mt] = Master theses, [rp] = Bachelor theses

Abgeschlossene Arbeiten

  • Navatouch Deeying
    Modeling and Verification of N-Path Filters [mt]

Publications

2019

9.
Chi , J. ; Mandry , H. ; Ortmanns , M.
Finite Gain-Bandwidth of Q Enhancement in Bandpass CT ΣΔ Modulator and Compensation
IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-5.
Mai 2019

2018

8.
Chi , J. ; Jain , A. ; Sauerbrey , J. ; Becker , J. ; Ortmanns , M.
Interferer Induced Jitter Reduction in Bandpass CT ΣΔ Modulators for Receiver Applications
2018 IEEE International Symposium on Circuits and Systems (ISCAS), Florence, Italy, pp. 1-4
Mai 2018

2017

7.
Wagner , J. ; Chi , J. ; Ortmanns , M.
Designing CT Bandpass Sigma-Delta Modulators with Arbitrary STF Shapes
IEEE International Symposium on Circuits and Systems (ISCAS 2017), Baltimore, USA
Mai 2017
6.
Chi , J. ; Wagner , J. ; Anders , J. ; Ortmanns , M.
Digital Interferer Suppression and Jitter Reduction in Continuous-Time Bandpass Sigma Delta Modulators
IEEE International Symposium on Circuits and Systems (ISCAS 2017), Baltimore, USA
Mai 2017

2016

5.
Wagner , J. ; Chi , J. ; Ortmanns , M.
Designing CT ΣΔ Modulators with Shaped Feedback Waveforms using www.sigma-delta.de
23rd IEEE International Conference on Electronics, Circuits and Systems (ICECS), Monaco
Dezember 2016
4.
Chi , J. ; Ritter , R. ; Wagner , J. ; Ortmanns , M.
Phase Noise vs. Jitter Analysis in Continuous-Time LP and BP Sigma Delta Modulators with Interferers
23rd IEEE International Conference on Electronics, Circuits and Systems (ICECS), Monaco
Dezember 2016
3.
Chu , C. ; Wagner , J. ; Al Marashli , A. ; Chi , J. ; Ortmanns , M.
A Study on Op-amp Nonlinearity in a Single-bit CT Modulator Employing GBW Compensation
Conference on PhD Research in Microelectronics and Electronics (PRIME 2016), Lisbon, Portugal
Juni 2016
2.
Ortmanns , M. ; Ritter , R. ; Chi , J.
ΣΔ ADCs with Improved Interferer Robustness
Band Wideband Continuous-time SD-ADCs, Automotive Electronics, and Power Management: Advances in Analog Circuit Design 2016
Herausgeber: Springer
2016
ISBN:978-3319416694

2015

1.
Tao , S. ; Chi , J. ; Rusu , A.
Design considerations for pipelined continuous-time incremental Sigma-Delta ADCs
2015 IEEE International Symposium on Circuits and Systems (ISCAS), pp. 1014-1017, Lisbon, Portugal
2015

Research Assistant

Jiazuo Chi