A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End

K. Spoof; M. Tenhunen; V. Unnikrishnan; K. Stadius; M. Kosunen; J. Ryynänen

doi:10.1109/ICECS202256217.2022.9971095

A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End

K. Spoof^*, M. Tenhunen, V. Unnikrishnan, K. Stadius, M. Kosunen, J. Ryynänen

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

1 Citation (Scopus)

Abstract

Hybrid beamformers utilize spatial filtering before the analog-to-digital converter for improved dynamic range performance while also allowing flexibility from digital spatial processing. Using true-time-delays (TTD) in the analog beamforming section of the hybrid enables directivity control for large fractional bandwidths. However, TTD beamforming is not ideal for filtering wide band interferers since the null directions still change with frequency. This paper reports the first published TTD beam-nulling RF receiver front-end for wideband spatial filtering. The receiver implements TTDs with the recently introduced resampling method. The signal inversion required for beam-nulling is implemented on-chip with clock tuning outside of the signal path. The receiver supports an instantaneous beam-nulled bandwidth of 1.6 GHz across the 0.8-6 GHz frequency range, reaching a 100% fractional bandwidth at the low end. The prototype was implemented in a 22-nm FD-SOI CMOS process.

Original language	English
Title of host publication	ICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
Publisher	IEEE
Number of pages	4
ISBN (Electronic)	978-1-6654-8823-5
DOIs	https://doi.org/10.1109/ICECS202256217.2022.9971095
Publication status	Published - 2022
MoE publication type	A4 Conference publication
Event	IEEE International Conference on Electronics, Circuits and Systems - Glasgow, United Kingdom Duration: 24 Oct 2022 → 26 Oct 2022 Conference number: 29

Conference

Conference	IEEE International Conference on Electronics, Circuits and Systems
Abbreviated title	ICECS
Country/Territory	United Kingdom
City	Glasgow
Period	24/10/2022 → 26/10/2022

Keywords

Radio frequency
Filtering
Array signal processing
Prototypes
Receivers
Dynamic range
System-on-chip
Analog beamforming
hybrid beamforming
beam-nulling
true-time-delay
spatial filtering
beam squint
phased array
ADC
radio receiver
CMOS

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10.1109/ICECS202256217.2022.9971095

Cite this

@inproceedings{9041779ec7e1421ebe3378119a3042d8,

title = "A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End",

abstract = "Hybrid beamformers utilize spatial filtering before the analog-to-digital converter for improved dynamic range performance while also allowing flexibility from digital spatial processing. Using true-time-delays (TTD) in the analog beamforming section of the hybrid enables directivity control for large fractional bandwidths. However, TTD beamforming is not ideal for filtering wide band interferers since the null directions still change with frequency. This paper reports the first published TTD beam-nulling RF receiver front-end for wideband spatial filtering. The receiver implements TTDs with the recently introduced resampling method. The signal inversion required for beam-nulling is implemented on-chip with clock tuning outside of the signal path. The receiver supports an instantaneous beam-nulled bandwidth of 1.6 GHz across the 0.8-6 GHz frequency range, reaching a 100% fractional bandwidth at the low end. The prototype was implemented in a 22-nm FD-SOI CMOS process.",

keywords = "Radio frequency, Filtering, Array signal processing, Prototypes, Receivers, Dynamic range, System-on-chip, Analog beamforming, hybrid beamforming, beam-nulling, true-time-delay, spatial filtering, beam squint, phased array, ADC, radio receiver, CMOS",

author = "K. Spoof and M. Tenhunen and V. Unnikrishnan and K. Stadius and M. Kosunen and J. Ryyn{\"a}nen",

year = "2022",

doi = "10.1109/ICECS202256217.2022.9971095",

language = "English",

booktitle = "ICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings",

publisher = "IEEE",

address = "United States",

note = "IEEE International Conference on Electronics, Circuits and Systems, ICECS ; Conference date: 24-10-2022 Through 26-10-2022",

}

Spoof, K, Tenhunen, M, Unnikrishnan, V, Stadius, K , Kosunen, M & Ryynänen, J 2022, A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End. in ICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings. IEEE, IEEE International Conference on Electronics, Circuits and Systems, Glasgow, United Kingdom, 24/10/2022. https://doi.org/10.1109/ICECS202256217.2022.9971095

TY - GEN

T1 - A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End

AU - Spoof, K.

AU - Tenhunen, M.

AU - Unnikrishnan, V.

AU - Stadius, K.

AU - Kosunen, M.

AU - Ryynänen, J.

N1 - Conference code: 29

PY - 2022

Y1 - 2022

N2 - Hybrid beamformers utilize spatial filtering before the analog-to-digital converter for improved dynamic range performance while also allowing flexibility from digital spatial processing. Using true-time-delays (TTD) in the analog beamforming section of the hybrid enables directivity control for large fractional bandwidths. However, TTD beamforming is not ideal for filtering wide band interferers since the null directions still change with frequency. This paper reports the first published TTD beam-nulling RF receiver front-end for wideband spatial filtering. The receiver implements TTDs with the recently introduced resampling method. The signal inversion required for beam-nulling is implemented on-chip with clock tuning outside of the signal path. The receiver supports an instantaneous beam-nulled bandwidth of 1.6 GHz across the 0.8-6 GHz frequency range, reaching a 100% fractional bandwidth at the low end. The prototype was implemented in a 22-nm FD-SOI CMOS process.

AB - Hybrid beamformers utilize spatial filtering before the analog-to-digital converter for improved dynamic range performance while also allowing flexibility from digital spatial processing. Using true-time-delays (TTD) in the analog beamforming section of the hybrid enables directivity control for large fractional bandwidths. However, TTD beamforming is not ideal for filtering wide band interferers since the null directions still change with frequency. This paper reports the first published TTD beam-nulling RF receiver front-end for wideband spatial filtering. The receiver implements TTDs with the recently introduced resampling method. The signal inversion required for beam-nulling is implemented on-chip with clock tuning outside of the signal path. The receiver supports an instantaneous beam-nulled bandwidth of 1.6 GHz across the 0.8-6 GHz frequency range, reaching a 100% fractional bandwidth at the low end. The prototype was implemented in a 22-nm FD-SOI CMOS process.

KW - Radio frequency

KW - Filtering

KW - Array signal processing

KW - Prototypes

KW - Receivers

KW - Dynamic range

KW - System-on-chip

KW - Analog beamforming

KW - hybrid beamforming

KW - beam-nulling

KW - true-time-delay

KW - spatial filtering

KW - beam squint

KW - phased array

KW - ADC

KW - radio receiver

KW - CMOS

UR - http://www.scopus.com/inward/record.url?scp=85142465066&partnerID=8YFLogxK

U2 - 10.1109/ICECS202256217.2022.9971095

DO - 10.1109/ICECS202256217.2022.9971095

M3 - Conference article in proceedings

BT - ICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings

PB - IEEE

T2 - IEEE International Conference on Electronics, Circuits and Systems

Y2 - 24 October 2022 through 26 October 2022

ER -

A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End

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Conference

Keywords

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