Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Manuel Arrébola"'
Publikováno v:
Applied Sciences, Vol 14, Iss 23, p 11065 (2024)
The Laser Powder-Bed Fusion Additive Manufacturing (LPBF AM) technique is evaluated for the manufacturing of fully metallic monolithic microwave components. To validate the manufacturing technique, a difference pattern array of 4 × 4 horn antennas i
Externí odkaz:
https://doaj.org/article/cf584c1270a74364ae28b96856b0d9b4
Publikováno v:
Journal of Vascular Surgery. 77:29S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::983a54a0b6d39ab39d5b1336c696d32b
https://doi.org/10.1016/j.jvs.2023.01.088
https://doi.org/10.1016/j.jvs.2023.01.088
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 4, Pp 1095-1107 (2024)
In this article, two multibeam reflectarray antennas are presented for Ka-band in a multi-feed configuration. Both feature a wide-angle scanning range with very low scan losses. They are designed using an iterative optimization process based on a pha
Externí odkaz:
https://doaj.org/article/75387dd960fd42b9a6faaba95218db6a
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 2, Pp 507-515 (2024)
This work presents a reflectarray-based base station antenna to integrate both backhaul (BH) and fronthaul (FH). The reflectarray operates at 28 GHz in dual linear polarization, using one polarization for the BH and another for the FH. The BH is a pe
Externí odkaz:
https://doaj.org/article/b8f6eea1305841d0926c976f6ab98c2f
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract A wideband dual-reflector 3D-printed antenna is proposed to operate in the mm-Wave band. The design is based on a Cassegrain reflector optics but including a dielectric piece for merging the feeding system and the support structure of the su
Externí odkaz:
https://doaj.org/article/67d5cc56e9574651962dda40b29f8c1b
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 4, Pp 847-859 (2023)
This paper presents investigations on reflectarray antennas using non-periodic element distributions. The study involves the analysis and design of two reflectarrays based on quasi-periodic lattices with rectangular and pentagonal profiles, whose per
Externí odkaz:
https://doaj.org/article/126aff74bd8c49fb9426fb3e5b86ccbe
Publikováno v:
IEEE Access, Vol 10, Pp 12580-12591 (2022)
In this paper, it is proposed the use of ultra-thin reflectarrays in some emerging scenarios in the new mm-wave cellular networks such as 5G, Beyond-5G (B5G), and future 6G. To that purpose, two dual-linear polarization reflectarrays are developed to
Externí odkaz:
https://doaj.org/article/3d59c3648e764f5682a2756bd473ea8c
Autor:
Nelson J. G. Fonseca, Sophie-Abigaël Gomanne, José Rico-Fernández, Petar Jankovic, Jaione Galdeano, Giovanni Toso, Piero Angeletti, Manuel Arrebola, Oscar Quevedo-Teruel
Publikováno v:
Sensors, Vol 23, Iss 14, p 6573 (2023)
This paper reports on the design and experimental validation of a fully-metallic double-ridged waveguide 10 × 10 Rotman lens additively manufactured as a single part. The wide band operation of this quasi-optical beamformer enables us to cover the u
Externí odkaz:
https://doaj.org/article/0180caa56fc14376aa92c42c9d3f6226
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Abstract One of the most ambitious projects in communications in recent years is the development of the so-called satellite mega-constellations. Comprised of hundreds or thousands of small and low-cost satellites, they aim to provide internet service
Externí odkaz:
https://doaj.org/article/e24492be0449404eb23be4b3f1fc31d0
Publikováno v:
IEEE Access, Vol 8, Pp 100712-100720 (2020)
A broadband spaceborne reflectarray with high polarization purity is proposed for Ultra High Definition TV (UHDTV) broadcasting for direct-to-home (DTH) applications. The provided bandwidth would allow to offer DTH and other services, while the enhan
Externí odkaz:
https://doaj.org/article/be744aa19bd5429c805046abbd7dee39