Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators

S. Ringeling; L. Steinebach; Q. Liu; C. Zhang; S. Bajoria; M. Bolatkale; L. Breems; G. Radulov

doi:10.1109/ECCTD49232.2020.9218408

Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators

S. Ringeling, L. Steinebach, Q. Liu, C. Zhang, S. Bajoria, M. Bolatkale, L. Breems, G. Radulov

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

1 Citation (Scopus)

Abstract

This paper reports a novel beamforming method based on Continuous Time Sigma-Delta Modulators (CT SDM) with feedforward (FF) programmable coefficients implemented as spatial FIR filters. This new method realizes analog beamforming in baseband and allows accurate beamsteering by programming banks of resistors. We present the theoretical framework and a proof-of-concept implementation as a spatio-temporal 250MHz signal bandwidth CT SDM in 40nm CMOS for a 9-channels phased array. This paper shows that the proposed method can significantly lower the ADC SNR requirements in phased-array receivers operating in the presence of multiple interferers inside the signal frequency band. Our method can enable power-efficient hybrid multi-link beam-forming when combined with the standard digital beamforming approaches.

Original language	English
Title of host publication	ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	4
ISBN (Electronic)	978-1-7281-7183-8
DOIs	https://doi.org/10.1109/ECCTD49232.2020.9218408
Publication status	Published - Sept 2020
Event	24th European Conference on Circuit Theory and Design, ECCTD 2020 - Sofia, Bulgaria Duration: 7 Sept 2020 → 10 Sept 2020 Conference number: 24

Conference

Conference	24th European Conference on Circuit Theory and Design, ECCTD 2020
Country/Territory	Bulgaria
City	Sofia
Period	7/09/20 → 10/09/20

Keywords

5G
Beamforming
Phased-array
Sigma-Delta

Access to Document

10.1109/ECCTD49232.2020.9218408

Cite this

Ringeling, S., Steinebach, L., Liu, Q., Zhang, C., Bajoria, S., Bolatkale, M., Breems, L., & Radulov, G. (2020). Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators. In ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design Article 9218408 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ECCTD49232.2020.9218408

@inproceedings{b35398fbbd9e411dbb106e47cead7be8,

title = "Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators",

abstract = "This paper reports a novel beamforming method based on Continuous Time Sigma-Delta Modulators (CT SDM) with feedforward (FF) programmable coefficients implemented as spatial FIR filters. This new method realizes analog beamforming in baseband and allows accurate beamsteering by programming banks of resistors. We present the theoretical framework and a proof-of-concept implementation as a spatio-temporal 250MHz signal bandwidth CT SDM in 40nm CMOS for a 9-channels phased array. This paper shows that the proposed method can significantly lower the ADC SNR requirements in phased-array receivers operating in the presence of multiple interferers inside the signal frequency band. Our method can enable power-efficient hybrid multi-link beam-forming when combined with the standard digital beamforming approaches. ",

keywords = "5G, Beamforming, Phased-array, Sigma-Delta",

author = "S. Ringeling and L. Steinebach and Q. Liu and C. Zhang and S. Bajoria and M. Bolatkale and L. Breems and G. Radulov",

year = "2020",

month = sep,

doi = "10.1109/ECCTD49232.2020.9218408",

language = "English",

booktitle = "ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "24th European Conference on Circuit Theory and Design, ECCTD 2020 ; Conference date: 07-09-2020 Through 10-09-2020",

}

Ringeling, S, Steinebach, L, Liu, Q, Zhang, C, Bajoria, S, Bolatkale, M, Breems, L & Radulov, G 2020, Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators. in ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design., 9218408, Institute of Electrical and Electronics Engineers, 24th European Conference on Circuit Theory and Design, ECCTD 2020, Sofia, Bulgaria, 7/09/20. https://doi.org/10.1109/ECCTD49232.2020.9218408

Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators. / Ringeling, S.; Steinebach, L.; Liu, Q. et al.
ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design. Institute of Electrical and Electronics Engineers, 2020. 9218408.

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

TY - GEN

T1 - Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators

AU - Ringeling, S.

AU - Steinebach, L.

AU - Liu, Q.

AU - Zhang, C.

AU - Bajoria, S.

AU - Bolatkale, M.

AU - Breems, L.

AU - Radulov, G.

N1 - Conference code: 24

PY - 2020/9

Y1 - 2020/9

N2 - This paper reports a novel beamforming method based on Continuous Time Sigma-Delta Modulators (CT SDM) with feedforward (FF) programmable coefficients implemented as spatial FIR filters. This new method realizes analog beamforming in baseband and allows accurate beamsteering by programming banks of resistors. We present the theoretical framework and a proof-of-concept implementation as a spatio-temporal 250MHz signal bandwidth CT SDM in 40nm CMOS for a 9-channels phased array. This paper shows that the proposed method can significantly lower the ADC SNR requirements in phased-array receivers operating in the presence of multiple interferers inside the signal frequency band. Our method can enable power-efficient hybrid multi-link beam-forming when combined with the standard digital beamforming approaches.

AB - This paper reports a novel beamforming method based on Continuous Time Sigma-Delta Modulators (CT SDM) with feedforward (FF) programmable coefficients implemented as spatial FIR filters. This new method realizes analog beamforming in baseband and allows accurate beamsteering by programming banks of resistors. We present the theoretical framework and a proof-of-concept implementation as a spatio-temporal 250MHz signal bandwidth CT SDM in 40nm CMOS for a 9-channels phased array. This paper shows that the proposed method can significantly lower the ADC SNR requirements in phased-array receivers operating in the presence of multiple interferers inside the signal frequency band. Our method can enable power-efficient hybrid multi-link beam-forming when combined with the standard digital beamforming approaches.

KW - 5G

KW - Beamforming

KW - Phased-array

KW - Sigma-Delta

UR - http://www.scopus.com/inward/record.url?scp=85096484237&partnerID=8YFLogxK

U2 - 10.1109/ECCTD49232.2020.9218408

DO - 10.1109/ECCTD49232.2020.9218408

M3 - Conference contribution

AN - SCOPUS:85096484237

BT - ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design

PB - Institute of Electrical and Electronics Engineers

T2 - 24th European Conference on Circuit Theory and Design, ECCTD 2020

Y2 - 7 September 2020 through 10 September 2020

ER -

Novel Baseband Analog Beamforming through Resistive DACs and Sigma Delta Modulators

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this