A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression

Remco Schalk; Patrick van Mourik; Qilong Liu; Shagun Bajoria; Wei Kong; Georgi I. Radulov; Lucien J. Breems

doi:10.1109/ESSERC62670.2024.10719548

A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression

Remco Schalk, Patrick van Mourik, Qilong Liu, Shagun Bajoria, Wei Kong, Georgi I. Radulov, Lucien J. Breems

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

1 Citation (Scopus)

7 Downloads (Pure)

Abstract

This paper proposes a novel BF-ΔΣM concept, which integrates passive vector modulators within the ΔΣM loop filter to suppress spatial blockers and hence greatly reduce the dynamic range requirements of the ADC. To enhance phased-array receiver performance, a CT-ΔΣM with embedded R-2R based vector modulators as feed-in coefficients is proposed. Resistive vector modulators can provide accurate phase shifting and amplitude scaling, enabling beam-steering and null-steering. This 4-element 40 nm CMOS BF-ΔΣM achieves >30 dB suppression of interferers up to three spatial interferers, 200MHz-bandwidth and >70 dB spatial blocker DR with only 7.3 mW. The BF-ΔΣM obtains 7fJ/cs and 177 dB BF-ADC equivalent Walden FoM and Schreier FoM.

Original language	English
Title of host publication	2024 IEEE European Solid-State Electronics Research Conference (ESSERC)
Publisher	Institute of Electrical and Electronics Engineers
Pages	641-644
Number of pages	4
ISBN (Electronic)	979-8-3503-8813-8
DOIs	https://doi.org/10.1109/ESSERC62670.2024.10719548
Publication status	Published - 23 Oct 2024
Event	European Solid-State Electronics Research Conference 2024 - Bruges, Belgium Duration: 9 Sept 2024 → 12 Sept 2024 https://www.esserc2024.org/conference

Conference

Conference	European Solid-State Electronics Research Conference 2024
Abbreviated title	ESSERC
Country/Territory	Belgium
City	Bruges
Period	9/09/24 → 12/09/24
Internet address	https://www.esserc2024.org/conference

Keywords

Analog-digital conversion
Beam steering
Delta-sigma modulation
Phase shifters
Phased arrays
Receivers

Access to Document

10.1109/ESSERC62670.2024.10719548

pdfFinal published version, 1.33 MBLicence: TAVERNE

Cite this

Schalk, R., van Mourik, P., Liu, Q., Bajoria, S., Kong, W., Radulov, G. I., & Breems, L. J. (2024). A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression. In 2024 IEEE European Solid-State Electronics Research Conference (ESSERC) (pp. 641-644). Article 10719548 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ESSERC62670.2024.10719548

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title = "A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression",

abstract = "This paper proposes a novel BF-ΔΣM concept, which integrates passive vector modulators within the ΔΣM loop filter to suppress spatial blockers and hence greatly reduce the dynamic range requirements of the ADC. To enhance phased-array receiver performance, a CT-ΔΣM with embedded R-2R based vector modulators as feed-in coefficients is proposed. Resistive vector modulators can provide accurate phase shifting and amplitude scaling, enabling beam-steering and null-steering. This 4-element 40 nm CMOS BF-ΔΣM achieves >30 dB suppression of interferers up to three spatial interferers, 200MHz-bandwidth and >70 dB spatial blocker DR with only 7.3 mW. The BF-ΔΣM obtains 7fJ/cs and 177 dB BF-ADC equivalent Walden FoM and Schreier FoM.",

keywords = "Analog-digital conversion, Beam steering, Delta-sigma modulation, Phase shifters, Phased arrays, Receivers",

author = "Remco Schalk and {van Mourik}, Patrick and Qilong Liu and Shagun Bajoria and Wei Kong and Radulov, {Georgi I.} and Breems, {Lucien J.}",

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doi = "10.1109/ESSERC62670.2024.10719548",

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booktitle = "2024 IEEE European Solid-State Electronics Research Conference (ESSERC)",

publisher = "Institute of Electrical and Electronics Engineers",

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Schalk, R, van Mourik, P, Liu, Q, Bajoria, S, Kong, W, Radulov, GI & Breems, LJ 2024, A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression. in 2024 IEEE European Solid-State Electronics Research Conference (ESSERC)., 10719548, Institute of Electrical and Electronics Engineers, pp. 641-644, European Solid-State Electronics Research Conference 2024, Bruges, Belgium, 9/09/24. https://doi.org/10.1109/ESSERC62670.2024.10719548

A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression. / Schalk, Remco; van Mourik, Patrick; Liu, Qilong et al.
2024 IEEE European Solid-State Electronics Research Conference (ESSERC). Institute of Electrical and Electronics Engineers, 2024. p. 641-644 10719548.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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AU - Schalk, Remco

AU - van Mourik, Patrick

AU - Liu, Qilong

AU - Bajoria, Shagun

AU - Kong, Wei

AU - Radulov, Georgi I.

AU - Breems, Lucien J.

PY - 2024/10/23

Y1 - 2024/10/23

N2 - This paper proposes a novel BF-ΔΣM concept, which integrates passive vector modulators within the ΔΣM loop filter to suppress spatial blockers and hence greatly reduce the dynamic range requirements of the ADC. To enhance phased-array receiver performance, a CT-ΔΣM with embedded R-2R based vector modulators as feed-in coefficients is proposed. Resistive vector modulators can provide accurate phase shifting and amplitude scaling, enabling beam-steering and null-steering. This 4-element 40 nm CMOS BF-ΔΣM achieves >30 dB suppression of interferers up to three spatial interferers, 200MHz-bandwidth and >70 dB spatial blocker DR with only 7.3 mW. The BF-ΔΣM obtains 7fJ/cs and 177 dB BF-ADC equivalent Walden FoM and Schreier FoM.

AB - This paper proposes a novel BF-ΔΣM concept, which integrates passive vector modulators within the ΔΣM loop filter to suppress spatial blockers and hence greatly reduce the dynamic range requirements of the ADC. To enhance phased-array receiver performance, a CT-ΔΣM with embedded R-2R based vector modulators as feed-in coefficients is proposed. Resistive vector modulators can provide accurate phase shifting and amplitude scaling, enabling beam-steering and null-steering. This 4-element 40 nm CMOS BF-ΔΣM achieves >30 dB suppression of interferers up to three spatial interferers, 200MHz-bandwidth and >70 dB spatial blocker DR with only 7.3 mW. The BF-ΔΣM obtains 7fJ/cs and 177 dB BF-ADC equivalent Walden FoM and Schreier FoM.

KW - Analog-digital conversion

KW - Beam steering

KW - Delta-sigma modulation

KW - Phase shifters

KW - Phased arrays

KW - Receivers

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M3 - Conference contribution

SP - 641

EP - 644

BT - 2024 IEEE European Solid-State Electronics Research Conference (ESSERC)

PB - Institute of Electrical and Electronics Engineers

T2 - European Solid-State Electronics Research Conference 2024

Y2 - 9 September 2024 through 12 September 2024

ER -

Schalk R, van Mourik P, Liu Q, Bajoria S, Kong W, Radulov GI et al. A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression. In 2024 IEEE European Solid-State Electronics Research Conference (ESSERC). Institute of Electrical and Electronics Engineers. 2024. p. 641-644. 10719548 doi: 10.1109/ESSERC62670.2024.10719548

A 7.3 mW 200 MHz-BW 4-element Passive-Beamforming Continuous-Time ΔΣ ADC with >30dB Spatial Interferer Suppression

Abstract

Conference

Keywords

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