A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters

Veselin Manev; Marios Neofytou; Georgi Radulov; Kostas Doris

doi:10.1109/ECCTD49232.2020.9218366

A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters

Veselin Manev, Marios Neofytou, Georgi Radulov, Kostas Doris

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

Abstract

This paper investigates the beam squint of direct conversion phased array transmitters with quadrature modulation and digital beam-forming. Beam squint occurs due to frequency dependent beam forming and leads to signal deterioration. It is analyzed in terms of EVM and maximum bit-rate, using both analytical and numerical computation. Various results illustrate the dependencies of the error mechanism on key design parameters in mm-wave transmitters. It is shown that having 14 elements and 120° scanning angle limits the theoretical maximum bitrate by 84% We show that using partial symbol delay in baseband, the EVM can be improved up to-30dB for 10 elements and more, without any apparent disadvantages. Moreover the bitrate theoretical maximum is increased by 4 times.

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/ECCTD49232.2020.9218366
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

beam squint
mmWave
phased array
transmitter
wideband

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10.1109/ECCTD49232.2020.9218366

Cite this

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title = "A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters",

abstract = "This paper investigates the beam squint of direct conversion phased array transmitters with quadrature modulation and digital beam-forming. Beam squint occurs due to frequency dependent beam forming and leads to signal deterioration. It is analyzed in terms of EVM and maximum bit-rate, using both analytical and numerical computation. Various results illustrate the dependencies of the error mechanism on key design parameters in mm-wave transmitters. It is shown that having 14 elements and 120° scanning angle limits the theoretical maximum bitrate by 84% We show that using partial symbol delay in baseband, the EVM can be improved up to-30dB for 10 elements and more, without any apparent disadvantages. Moreover the bitrate theoretical maximum is increased by 4 times. ",

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author = "Veselin Manev and Marios Neofytou and Georgi Radulov and Kostas Doris",

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

publisher = "Institute of Electrical and Electronics Engineers",

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

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Manev, V, Neofytou, M , Radulov, G & Doris, K 2020, A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters. in ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design., 9218366, 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/ECCTD49232.2020.9218366

A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters. / Manev, Veselin; Neofytou, Marios ; Radulov, Georgi et al.

ECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design. Institute of Electrical and Electronics Engineers, 2020. 9218366.

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

TY - GEN

T1 - A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters

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AU - Radulov, Georgi

AU - Doris, Kostas

N1 - Conference code: 24

PY - 2020/9

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N2 - This paper investigates the beam squint of direct conversion phased array transmitters with quadrature modulation and digital beam-forming. Beam squint occurs due to frequency dependent beam forming and leads to signal deterioration. It is analyzed in terms of EVM and maximum bit-rate, using both analytical and numerical computation. Various results illustrate the dependencies of the error mechanism on key design parameters in mm-wave transmitters. It is shown that having 14 elements and 120° scanning angle limits the theoretical maximum bitrate by 84% We show that using partial symbol delay in baseband, the EVM can be improved up to-30dB for 10 elements and more, without any apparent disadvantages. Moreover the bitrate theoretical maximum is increased by 4 times.

AB - This paper investigates the beam squint of direct conversion phased array transmitters with quadrature modulation and digital beam-forming. Beam squint occurs due to frequency dependent beam forming and leads to signal deterioration. It is analyzed in terms of EVM and maximum bit-rate, using both analytical and numerical computation. Various results illustrate the dependencies of the error mechanism on key design parameters in mm-wave transmitters. It is shown that having 14 elements and 120° scanning angle limits the theoretical maximum bitrate by 84% We show that using partial symbol delay in baseband, the EVM can be improved up to-30dB for 10 elements and more, without any apparent disadvantages. Moreover the bitrate theoretical maximum is increased by 4 times.

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A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters

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Keywords

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