Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Marcos R. Pino"'
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:
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
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
Publikováno v:
IEEE Access, Vol 8, Pp 209091-209100 (2020)
A dual-reflector antenna with a self-supported subreflector is proposed. The supporting structure is made of dielectric material and it is part of the feeding of the antenna, which is based on Cassegrain optics and works at X-band. The feeding subsys
Externí odkaz:
https://doaj.org/article/43ed0699ca524ab38be5f25cc44e22a3
Publikováno v:
IEEE Access, Vol 7, Pp 143097-143108 (2019)
This paper investigates the focusing features of a multi-panel near-field focused (NFF) antenna. Differently from conventional NFF planar arrays, the proposed configuration is made of a set of NFF subarrays that are concentrically arranged over a cyl
Externí odkaz:
https://doaj.org/article/472684d28e8a477481f65b6a00d43e3b
Publikováno v:
IEEE Access, Vol 6, Pp 72295-72310 (2018)
This paper describes a general framework for the optimization of very large reflectarrays for space applications. It employs the generalized intersection approach as optimizing algorithm, integrating a number of techniques that substantially improve
Externí odkaz:
https://doaj.org/article/8194214c18ea4abba76e5712c12b24c0
Publikováno v:
International Journal of Antennas and Propagation, Vol 2017 (2017)
An improved reflectarray Phase-Only Synthesis technique which employs the generalized Intersection Approach (IA) algorithm is fully described. It is formulated with the First Principle of Equivalence and takes into account a dielectric frame which is
Externí odkaz:
https://doaj.org/article/424ca78e21514354aec2ace5c9fc375b
Publikováno v:
International Journal of Antennas and Propagation, Vol 2013 (2013)
An overview on compact Planar Inverted-F Antennas (PIFAs) that are suitable for monitor-equipped devices is presented. In particular, high efficiency PIFAs (without any dielectric layer) with a percentage bandwidth (%BW) greater than 59% (470–862 M
Externí odkaz:
https://doaj.org/article/94ce2cc7545c41688edef63fb49fd93d