Phased-Array antenna beam squinting related to frequency dependency of delay circuits

S.K. Garakoui; Eric A.M. Klumperink; Bram Nauta; Frank Edward van Vliet

doi:10.23919/EuMC.2011.6101846

Phased-Array antenna beam squinting related to frequency dependency of delay circuits

S.K. Garakoui, Eric A.M. Klumperink, Bram Nauta, Frank Edward van Vliet

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

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Abstract

Abstract-Practical time delay circuits do not have a perfectly linear phase-frequency characteristic. When these delay circuits are applied in a phased-array system, this frequency dependency shows up as a frequency dependent beam direction (“beam squinting‿). This paper quantifies beam squinting for a linear one-dimensional phased array with equally spaced antenna elements. The analysis is based on a (frequency-dependent) linear approximation of the phase transfer function of the delay circuit. The resulting relation turns out to be invariant for cascaded cells. Also a method is presented to design time-delay circuits to meet a maximum phased-array beam squinting requirement.

Original language	English
Title of host publication	Proceedings of the 41st European Microwave Conference, EuMA 2011
Place of Publication	USA
Publisher	IEEE
Pages	1304-1307
Number of pages	4
ISBN (Print)	978-1-61284-235-6
DOIs	https://doi.org/10.23919/EuMC.2011.6101846
Publication status	Published - 10 Oct 2011
Event	41st European Microwave Conference, EuMC 2011 - Manchester, United Kingdom Duration: 10 Oct 2011 → 13 Oct 2011 Conference number: 41

Conference

Conference	41st European Microwave Conference, EuMC 2011
Abbreviated title	EuMC
Country/Territory	United Kingdom
City	Manchester
Period	10/10/11 → 13/10/11

Keywords

METIS-285096
Beam pointing
Beam squint
Beam-forming
Phased array
True time delay
Analog delay
EWI-21440
Phase-shifter
IR-79644

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10.23919/EuMC.2011.6101846

Garakoui-BeamSquintingAndDelaVariation-Eurad2011Accepted author version, 332 KB

Cite this

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title = "Phased-Array antenna beam squinting related to frequency dependency of delay circuits",

abstract = "Abstract-Practical time delay circuits do not have a perfectly linear phase-frequency characteristic. When these delay circuits are applied in a phased-array system, this frequency dependency shows up as a frequency dependent beam direction (“beam squinting‿). This paper quantifies beam squinting for a linear one-dimensional phased array with equally spaced antenna elements. The analysis is based on a (frequency-dependent) linear approximation of the phase transfer function of the delay circuit. The resulting relation turns out to be invariant for cascaded cells. Also a method is presented to design time-delay circuits to meet a maximum phased-array beam squinting requirement.",

keywords = "METIS-285096, Beam pointing, Beam squint, Beam-forming, Phased array, True time delay, Analog delay, EWI-21440, Phase-shifter, IR-79644",

author = "S.K. Garakoui and Klumperink, {Eric A.M.} and Bram Nauta and {van Vliet}, {Frank Edward}",

note = "Also published at EuRAD 2011 in Proceedings of the 8th European Radar Conference, 12-14 Oct 2011 Manchester UK, Page 416-419. - ISBN:978-1-4577-1156-5 ; 41st European Microwave Conference, EuMC 2011, EuMC ; Conference date: 10-10-2011 Through 13-10-2011",

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Garakoui, SK, Klumperink, EAM , Nauta, B & van Vliet, FE 2011, Phased-Array antenna beam squinting related to frequency dependency of delay circuits. in Proceedings of the 41st European Microwave Conference, EuMA 2011. IEEE, USA, pp. 1304-1307, 41st European Microwave Conference, EuMC 2011, Manchester, United Kingdom, 10/10/11. https://doi.org/10.23919/EuMC.2011.6101846

TY - GEN

T1 - Phased-Array antenna beam squinting related to frequency dependency of delay circuits

AU - Garakoui, S.K.

AU - Klumperink, Eric A.M.

AU - Nauta, Bram

AU - van Vliet, Frank Edward

N1 - Conference code: 41

PY - 2011/10/10

Y1 - 2011/10/10

N2 - Abstract-Practical time delay circuits do not have a perfectly linear phase-frequency characteristic. When these delay circuits are applied in a phased-array system, this frequency dependency shows up as a frequency dependent beam direction (“beam squinting‿). This paper quantifies beam squinting for a linear one-dimensional phased array with equally spaced antenna elements. The analysis is based on a (frequency-dependent) linear approximation of the phase transfer function of the delay circuit. The resulting relation turns out to be invariant for cascaded cells. Also a method is presented to design time-delay circuits to meet a maximum phased-array beam squinting requirement.

AB - Abstract-Practical time delay circuits do not have a perfectly linear phase-frequency characteristic. When these delay circuits are applied in a phased-array system, this frequency dependency shows up as a frequency dependent beam direction (“beam squinting‿). This paper quantifies beam squinting for a linear one-dimensional phased array with equally spaced antenna elements. The analysis is based on a (frequency-dependent) linear approximation of the phase transfer function of the delay circuit. The resulting relation turns out to be invariant for cascaded cells. Also a method is presented to design time-delay circuits to meet a maximum phased-array beam squinting requirement.

KW - METIS-285096

KW - Beam pointing

KW - Beam squint

KW - Beam-forming

KW - Phased array

KW - True time delay

KW - Analog delay

KW - EWI-21440

KW - Phase-shifter

KW - IR-79644

U2 - 10.23919/EuMC.2011.6101846

DO - 10.23919/EuMC.2011.6101846

M3 - Conference contribution

SN - 978-1-61284-235-6

SP - 1304

EP - 1307

BT - Proceedings of the 41st European Microwave Conference, EuMA 2011

PB - IEEE

CY - USA

T2 - 41st European Microwave Conference, EuMC 2011

Y2 - 10 October 2011 through 13 October 2011

ER -

Phased-Array antenna beam squinting related to frequency dependency of delay circuits

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Keywords

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