A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line

Peyman Aghabeyki; Zheng Hua Tan; Shuai Zhang

doi:10.23919/EuCAP57121.2023.10133638

A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line

Peyman Aghabeyki^*, Zheng Hua Tan, Shuai Zhang

^*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

3 Citations (Scopus)

Abstract

This paper presents a unitcell configuration for a wideband beam-steering reflectarray (RA). A rectangular patch is designed that is coupled through an H-shape slot to a spiral delay line. The substrate of the delay line is designed with Liquid Crystal (LC) layer. By applying a bias voltage between the delay line and slot-loaded ground plane, the permittivity of LC can be changed, and the concomitant change of electrical length can provide over 300° phase shift in a wide frequency range. The LC layer thickness is also reduced to 0.0042λ to improve the beam-steering speed. To overcome the issue of complex basing voltage implementation and still achieve a focused beam, a hybrid phase compensation for 1D beam-steering is proposed. The simulated results show that the main beam of the RA can be steered to ±60° and the maximum boresight gain reaches 19.5 dBi with 32% 3-dB gain bandwidth.

Original language	English
Title of host publication	17th European Conference on Antennas and Propagation, EuCAP 2023
Publisher	IEEE (Institute of Electrical and Electronics Engineers)
Publication date	2023
ISBN (Electronic)	9788831299077
DOIs	https://doi.org/10.23919/EuCAP57121.2023.10133638
Publication status	Published - 2023
Event	17th European Conference on Antennas and Propagation, EuCAP 2023 - Florence, Italy Duration: 26 Mar 2023 → 31 Mar 2023

Conference

Conference	17th European Conference on Antennas and Propagation, EuCAP 2023
Country/Territory	Italy
City	Florence
Period	26/03/2023 → 31/03/2023

Bibliographical note

Publisher Copyright:
© 2023 European Association for Antennas and Propagation.

Keywords

Beam-steering
Delay line
Liquid crystal
Reflectarray
Wideband

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title = "A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line",

abstract = "This paper presents a unitcell configuration for a wideband beam-steering reflectarray (RA). A rectangular patch is designed that is coupled through an H-shape slot to a spiral delay line. The substrate of the delay line is designed with Liquid Crystal (LC) layer. By applying a bias voltage between the delay line and slot-loaded ground plane, the permittivity of LC can be changed, and the concomitant change of electrical length can provide over 300° phase shift in a wide frequency range. The LC layer thickness is also reduced to 0.0042λ to improve the beam-steering speed. To overcome the issue of complex basing voltage implementation and still achieve a focused beam, a hybrid phase compensation for 1D beam-steering is proposed. The simulated results show that the main beam of the RA can be steered to ±60° and the maximum boresight gain reaches 19.5 dBi with 32% 3-dB gain bandwidth.",

keywords = "Beam-steering, Delay line, Liquid crystal, Reflectarray, Wideband",

author = "Peyman Aghabeyki and Tan, {Zheng Hua} and Shuai Zhang",

note = "Publisher Copyright: {\textcopyright} 2023 European Association for Antennas and Propagation.; 17th European Conference on Antennas and Propagation, EuCAP 2023 ; Conference date: 26-03-2023 Through 31-03-2023",

year = "2023",

doi = "10.23919/EuCAP57121.2023.10133638",

language = "English",

booktitle = "17th European Conference on Antennas and Propagation, EuCAP 2023",

publisher = "IEEE (Institute of Electrical and Electronics Engineers)",

address = "United States",

}

Aghabeyki, P , Tan, ZH & Zhang, S 2023, A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line. in 17th European Conference on Antennas and Propagation, EuCAP 2023. IEEE (Institute of Electrical and Electronics Engineers), 17th European Conference on Antennas and Propagation, EuCAP 2023, Florence, Italy, 26/03/2023. https://doi.org/10.23919/EuCAP57121.2023.10133638

A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line. / Aghabeyki, Peyman ; Tan, Zheng Hua ; Zhang, Shuai.
17th European Conference on Antennas and Propagation, EuCAP 2023. IEEE (Institute of Electrical and Electronics Engineers), 2023.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line

AU - Aghabeyki, Peyman

AU - Tan, Zheng Hua

AU - Zhang, Shuai

PY - 2023

Y1 - 2023

N2 - This paper presents a unitcell configuration for a wideband beam-steering reflectarray (RA). A rectangular patch is designed that is coupled through an H-shape slot to a spiral delay line. The substrate of the delay line is designed with Liquid Crystal (LC) layer. By applying a bias voltage between the delay line and slot-loaded ground plane, the permittivity of LC can be changed, and the concomitant change of electrical length can provide over 300° phase shift in a wide frequency range. The LC layer thickness is also reduced to 0.0042λ to improve the beam-steering speed. To overcome the issue of complex basing voltage implementation and still achieve a focused beam, a hybrid phase compensation for 1D beam-steering is proposed. The simulated results show that the main beam of the RA can be steered to ±60° and the maximum boresight gain reaches 19.5 dBi with 32% 3-dB gain bandwidth.

AB - This paper presents a unitcell configuration for a wideband beam-steering reflectarray (RA). A rectangular patch is designed that is coupled through an H-shape slot to a spiral delay line. The substrate of the delay line is designed with Liquid Crystal (LC) layer. By applying a bias voltage between the delay line and slot-loaded ground plane, the permittivity of LC can be changed, and the concomitant change of electrical length can provide over 300° phase shift in a wide frequency range. The LC layer thickness is also reduced to 0.0042λ to improve the beam-steering speed. To overcome the issue of complex basing voltage implementation and still achieve a focused beam, a hybrid phase compensation for 1D beam-steering is proposed. The simulated results show that the main beam of the RA can be steered to ±60° and the maximum boresight gain reaches 19.5 dBi with 32% 3-dB gain bandwidth.

KW - Beam-steering

KW - Delay line

KW - Liquid crystal

KW - Reflectarray

KW - Wideband

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DO - 10.23919/EuCAP57121.2023.10133638

M3 - Article in proceeding

AN - SCOPUS:85162216823

BT - 17th European Conference on Antennas and Propagation, EuCAP 2023

PB - IEEE (Institute of Electrical and Electronics Engineers)

T2 - 17th European Conference on Antennas and Propagation, EuCAP 2023

Y2 - 26 March 2023 through 31 March 2023

ER -

A Wideband Reconfigurable Reflectarray based on Aperture Coupled Delay Line

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