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

Sundeep Javvaji*, Muhammed Bolatkale, Shagun Bajoria, Robert Rutten, Bert Oude Essink, Koen Beijens, Kofi Makinwa, Lucien Breems

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)
35 Downloads (Pure)

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.

Original languageEnglish
Title of host publicationProceedings of the 2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023
PublisherIEEE
Number of pages2
ISBN (Electronic)978-4-86348-806-9
ISBN (Print)979-8-3503-4669-5
DOIs
Publication statusPublished - 2023
Event2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023 - Kyoto, Japan
Duration: 11 Jun 202316 Jun 2023

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
Volume2023-June
ISSN (Print)0743-1562

Conference

Conference2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023
Country/TerritoryJapan
CityKyoto
Period11/06/2316/06/23

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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