Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/33134
Autoria: | Vaquero, Á. F. Teixeira, J. Matos, S. A. Arrebola, M. Costa, J. R. Felício, J. M. Fernandes, C. A. Fonseca, N. J. G. |
Data: | 2023 |
Título próprio: | Design of low-profile transmitarray antennas with wide mechanical beam steering at millimeter waves |
Título da revista: | IEEE Transactions on Antennas and Propagation |
Volume: | 71 |
Número: | 4 |
Paginação: | 3713 - 3718 |
Referência bibliográfica: | Vaquero, Á. F., Teixeira, J., Matos, S. A., Arrebola, M., Costa, J. R., Felício, J. M., Fernandes, C. A., & Fonseca, N. J. G. (2023). Design of low-profile transmitarray antennas with wide mechanical beam steering at millimeter waves. IEEE Transactions on Antennas and Propagation, 71(4), 3713-3718. https://doi.org/10.1109/TAP.2023.3243796 |
ISSN: | 0018-926X |
DOI (Digital Object Identifier): | 10.1109/TAP.2023.3243796 |
Palavras-chave: | 3-D printing 5G mobile communications Dielectric lens Ka-band Low focal distance mechanical beam steering Transmitarray (TA) |
Resumo: | Mechanical beam steering using a single Transmitarray (TA) can be a cost-effective solution for a high-gain antenna with wide-angle scanning. Elevation scanning can be achieved by a linear displacement of the feed in the focal plane parallel to the aperture of diameter D. When designing compact terminals with a short focal length F and with high gain, the aberrations caused by this mechanical movement become the main limiting factor for the maximum scanning range. This work presents a novel design method for devising the TA phase correction with an even distribution of these aberrations among all beam directions. A significant improvement in the scanning performance is achieved when compared with the conventional single-focus phase correction approach. To validate the proposed approach, we consider a TA design at Ka-band (30 GHz) F/D≅0.34. A multifocal TA design was manufactured using 3D printed unit-cells. To highlight the proposed concept, the antenna configuration is stripped to the bare minimum: a perforated dielectric slab with in-plane mechanical movements in front of an open-ended standard waveguide used as feed. This antenna scans up to 50°, with a gain of 25 dBi at 30 GHz, 2.5 dB of scan loss, SLL <-10 dB and 1dB-bandwidth of 6.7%. |
Arbitragem científica: | yes |
Acesso: | Acesso Aberto |
Aparece nas coleções: | IT-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Tamanho | Formato | |
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article_94838.pdf | 3,24 MB | Adobe PDF | Ver/Abrir |
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