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This work was supported in part by MCIN/AEI/10.13039/501100011033 under grants PID2020-114172RB-C21, PID2023-146246OB-C32, and TED2021-130650B-C22, co-funded by the EU (European Union) "NextGenerationEU"/PRTR; by Ministerio de Educacion y Formacion Profesional, under grant FPU20/07267; and by FCT/MECI through national funds and, when applicable, co-funded EU funds under UID/50008: Instituto de Telecomunicacoes.

Analysis of institutional authors

Arrebola, ManuelCorresponding Author

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Article

Compact Beam-Scanning Reflectarray Antenna with SLL Reduction Using In-Plane Panel Translations

Publicated to:Applied Sciences-Basel. 15 (8): 4244- - 2025-04-11 15(8), DOI: 10.3390/app15084244

Authors: Gomez-Alvarez, Andres; Matos, Sergio A; Arrebola, Manuel; Pino, Marcos R; Fernandes, Carlos A

Affiliations

Inst Univ Lisboa Iscte IUL, Dept Ciencias & Tecnol Informacao, P-1649026 Lisbon, Portugal - Author
Inst Univ Lisboa Iscte IUL, Inst Telecomunicacoes, P-1649026 Lisbon, Portugal - Author
Univ Lisbon, Inst Telecomunicacoes, Inst Super Tecn, P-1049001 Lisbon, Portugal - Author
Univ Oviedo, Dept Elect Engn, Grp Signal Theory & Commun, Gijon 33203, Spain - Author
Univ Politecn Madrid, Sch Telecommun Engn, Dept Signals Syst & Radiocommun, Appl Electromagnet Grp, Madrid 28040, Spain - Author
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Abstract

A mechanical beam-scanning reflectarray (RA) antenna is presented for Ka band. The 1D steering of the beam is achieved through linear in-plane panel translations, which can be implemented at low cost using a rail-mounted moving RA panel. Compared to related works, a highly uniform beam level is achieved with a remarkably compact antenna profile. A new technique is also proposed to mitigate the high side lobes caused by the compact antenna optics, achieving an estimated 2.3 dB reduction in maximum SLL. The manufactured prototype has a panel size of 256.4 by 187.2 mm with 2898 elements, and an F/D of only 0.47. A measured scan loss of 1.1 dB is achieved over a 45-degree scanning range. The measured gain is 31.6 dBi and the aperture efficiency is 24.7% at the design frequency of 29.5 GHz, with SLL between -9.4 and -17.5 dB. In-band measurements show a 1 dB bandwidth from 28 to over 32 GHz (11.9%).

Keywords

Band reflectarrayCelDesignMechanical beam steeringMm-wavReflectarray antennasSteerable antennas

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Applied Sciences-Basel due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position 258/439, thus managing to position itself as a Q1 (Primer Cuartil), in the category Materials Science, Multidisciplinary.

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-28:

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

    It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

    • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

    Leadership analysis of institutional authors

    This work has been carried out with international collaboration, specifically with researchers from: Portugal.

    the author responsible for correspondence tasks has been ARREBOLA BAENA, MANUEL.