A new antenna array architecture with hybrid beamforming for broadband satellite communications

Margaux Pellet; George Goussetis; Hervé Legay; João F. C. Mota; Bingen Cortazar; Giovanni Toso

doi:10.23919/eucap57121.2023.10133294

A new antenna array architecture with hybrid beamforming for broadband satellite communications

Margaux Pellet, George Goussetis, Hervé Legay, João F. C. Mota, Bingen Cortazar, Giovanni Toso

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

290 Downloads (Pure)

Abstract

In this paper, an antenna array architecture for broadband space communications with overlapped square subarrays is proposed. Analog and digital beamforming are performed consecutively at subarray level and across all subarrays. Subarrays are considered at digital beamforming level as large radiating elements, and thus the spacing between adjacent subarrays is not sufficient to prevent from interference. This leads to the creation of grating lobes. Overlapping methodologies have been studied in the literature and is an effective solution to mitigate this non-desired grating lobes. An overlapping strategy is proposed in this paper and can be seen as a shift by half the size of a subarray along 2-D. This enables a total mitigation of odd grating lobes. A comparison is made to benchmark this architecture performance compared to other existing strategies.

Original language	English
Title of host publication	17th European Conference on Antennas and Propagation (EuCAP 2023)
Publisher	IEEE
ISBN (Print)	9781665475419
DOIs	https://doi.org/10.23919/eucap57121.2023.10133294
Publication status	Published - 31 May 2023

Keywords

analog beamforming
digital beamforming
grating lobes
hybrid beamforming
multi-beam antenna
overlap
scanning range
subarrays

ASJC Scopus subject areas

Computer Networks and Communications
Hardware and Architecture
Instrumentation

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title = "A new antenna array architecture with hybrid beamforming for broadband satellite communications",

abstract = "In this paper, an antenna array architecture for broadband space communications with overlapped square subarrays is proposed. Analog and digital beamforming are performed consecutively at subarray level and across all subarrays. Subarrays are considered at digital beamforming level as large radiating elements, and thus the spacing between adjacent subarrays is not sufficient to prevent from interference. This leads to the creation of grating lobes. Overlapping methodologies have been studied in the literature and is an effective solution to mitigate this non-desired grating lobes. An overlapping strategy is proposed in this paper and can be seen as a shift by half the size of a subarray along 2-D. This enables a total mitigation of odd grating lobes. A comparison is made to benchmark this architecture performance compared to other existing strategies.",

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author = "Margaux Pellet and George Goussetis and Herv{\'e} Legay and Mota, {Jo{\~a}o F. C.} and Bingen Cortazar and Giovanni Toso",

note = "Funding Information: This work has been supported by the European Space Agency under contract No. 4000135641/21/NL/GLC/my Publisher Copyright: {\textcopyright} 2023 European Association for Antennas and Propagation.",

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AU - Pellet, Margaux

AU - Goussetis, George

AU - Legay, Hervé

AU - Mota, João F. C.

AU - Cortazar, Bingen

AU - Toso, Giovanni

N1 - Funding Information: This work has been supported by the European Space Agency under contract No. 4000135641/21/NL/GLC/my Publisher Copyright: © 2023 European Association for Antennas and Propagation.

PY - 2023/5/31

Y1 - 2023/5/31

N2 - In this paper, an antenna array architecture for broadband space communications with overlapped square subarrays is proposed. Analog and digital beamforming are performed consecutively at subarray level and across all subarrays. Subarrays are considered at digital beamforming level as large radiating elements, and thus the spacing between adjacent subarrays is not sufficient to prevent from interference. This leads to the creation of grating lobes. Overlapping methodologies have been studied in the literature and is an effective solution to mitigate this non-desired grating lobes. An overlapping strategy is proposed in this paper and can be seen as a shift by half the size of a subarray along 2-D. This enables a total mitigation of odd grating lobes. A comparison is made to benchmark this architecture performance compared to other existing strategies.

AB - In this paper, an antenna array architecture for broadband space communications with overlapped square subarrays is proposed. Analog and digital beamforming are performed consecutively at subarray level and across all subarrays. Subarrays are considered at digital beamforming level as large radiating elements, and thus the spacing between adjacent subarrays is not sufficient to prevent from interference. This leads to the creation of grating lobes. Overlapping methodologies have been studied in the literature and is an effective solution to mitigate this non-desired grating lobes. An overlapping strategy is proposed in this paper and can be seen as a shift by half the size of a subarray along 2-D. This enables a total mitigation of odd grating lobes. A comparison is made to benchmark this architecture performance compared to other existing strategies.

KW - analog beamforming

KW - digital beamforming

KW - grating lobes

KW - hybrid beamforming

KW - multi-beam antenna

KW - overlap

KW - scanning range

KW - subarrays

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U2 - 10.23919/eucap57121.2023.10133294

DO - 10.23919/eucap57121.2023.10133294

M3 - Conference contribution

SN - 9781665475419

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

PB - IEEE

ER -

A new antenna array architecture with hybrid beamforming for broadband satellite communications

Abstract

Keywords

ASJC Scopus subject areas

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