A 6GHz Multi-Path Multi-Frequency Chopping CTΔΣ Modulator achieving 122dBFS SFDR from 150kHz to 120MHz BW

Conference paper (2023)

Authors

L.S. Javvaji Electronic Instrumentation - EEMCS
M. Bolatkale NXP Semiconductors, Electronic Instrumentation - EEMCS
Shagun Bajoria NXP Semiconductors
Robert Rutten NXP Semiconductors
Bert Oude Essink NXP Semiconductors
Koen Beijens NXP Semiconductors
K.A.A. Makinwa Microelectronics
L.J. Breems Electronic Instrumentation - EEMCS , NXP Semiconductors
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
Copyright: © 2023 L.S. Javvaji, M. Bolatkale, Shagun Bajoria, Robert Rutten, Bert Oude Essink, Koen Beijens, K.A.A. Makinwa, L.J. Breems
DOI: https://doi.org/10.23919/VLSITechnologyandCir57934.2023.10185356
More Info
expand_more

Published Date

2023

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

Advances in CMOS technologies have led to the development of continuous-time ΔΣ modulators (CTDSMs) with GHz sampling rates that achieve better than-100dBc linearity and bandwidths above 100MHz. However, at low frequencies (below 10MHz), their SNDR is limited by 1/f noise, which limits their use in radio receivers intended to cover both the AM and the FM bands. In this work, a multi-path multi-frequency chopping scheme is proposed to suppress 1/f noise, while maintaining interferer robustness, noise, spurious, and linearity performance. Implemented in a CTDSM sampling at 6GHz, it reduces its 1/f noise corner frequency by 22x and achieves -98.3dBc THD, 122dBFS SFDR in 120MHzBW.

Files

A_6GHz_Multi_Path_Multi_Freque... (pdf)
(pdf | 1.15 Mb)
- Embargo expired in 24-01-2024
Unknown license