CMOS Data Converters for Closed-Loop mmWave Transmitters
Licentiate thesis, 2020
In this thesis, both digital-to-analog (D/A) and analog-to-digital (A/D) converters suitable for wideband operation in millimeter wave (mmWave) massive MIMO transmitters are demonstrated. A 2×6 bit radio frequency digital-to-analog converter (RF-DAC)-based in-phase quadrature (IQ) modulator is demonstrated as a compact building block, that to a large extent realizes the transmit path in a closed-loop mmWave transmitter. The evaluation of an successive-approximation register (SAR) analog-to-digital converter (ADC) is also presented in this thesis. Methods for connecting simulated and measured performance has been studied in order to achieve a better understanding about the alternating comparator topology.
These contributions show great potential for enabling closed-loop mmWave transmitters for massive MIMO transmitter realizations.
Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers), Electronics Systems
Design Considerations and Evaluation of a High-Speed SAR ADC
2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC),; (2018)
Paper in proceedings
Åberg, V., Fager, C., Svensson, L., A 2x6b 8GS/s 17-24GHz I/Q RF-DAC Transmitter in 22nm FDSOI CMOS
Areas of Advance
Information and Communication Technology
Other Electrical Engineering, Electronic Engineering, Information Engineering
Technical report L - Department of Computer Science and Engineering, Chalmers University of Technology and Göteborg University: 212L
Chalmers University of Technology
Opponent: Assoc. Prof. Jacob Wikner, Department of Electrical Engineering (ISY), Linköping University, Sweden