Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Rafael Caldeirinha"'
Publikováno v:
Energies, Vol 14, Iss 8, p 2225 (2021)
Transmitter antenna arrays are typically coupled to several RF chains, which imposes stringent requirements on the linearization of each power amplifier (PA) present in the system. For this and other reasons discussed in this work, Over-the-air (OTA)
Externí odkaz:
https://doaj.org/article/1ad7c92b449a4e7591ca01ede78ce067
Autor:
Samuel Heleno, Carlos A. Fernandes, João M. Felício, Carlos Salema, Rafael Caldeirinha, Nuno Leonor
Publikováno v:
2023 17th European Conference on Antennas and Propagation (EuCAP).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d71b7f46ef8c9504f3571eee606edd9
https://doi.org/10.23919/eucap57121.2023.10133791
https://doi.org/10.23919/eucap57121.2023.10133791
Autor:
Tomás Soares Da Costa, João M. Felício, Mário Vala, Nuno Leonor, Jorge R. Costa, Paulo Marques, António A. Moreira, Rafael Caldeirinha, Sérgio A. Matos, Carlos A. Fernandes, Nelson J.G. Fonseca, Peter de Maagt
Publikováno v:
2023 17th European Conference on Antennas and Propagation (EuCAP).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d842e1bc3b740fe89e317082fb3ee5be
https://doi.org/10.23919/eucap57121.2023.10133107
https://doi.org/10.23919/eucap57121.2023.10133107
Implementation of a WSN for Environmental Monitoring: From the Base Station to the Small Sensor Node
Publikováno v:
Sensors; Volume 22; Issue 20; Pages: 7976
In this paper, the implementation of a Wireless Sensor Network (WSN) for environmental monitoring (EM) is presented. It includes the design, implementation and experimental characterization of a multi-sector base station (BS) antenna composed of seve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb7920d9b98e8ed05b66dc51e044e631
Autor:
Faria, Stefania, Vala, Mario, Leonor, Nuno, Felicio, Joao, Fernandes, Carlos, Salema, Carlos, Rafael Caldeirinha
Publikováno v:
Web of Science
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b302111305fafad838455101e4e0f8d
https://doi.org/10.23919/at-ap-rasc54737.2022.9814376
https://doi.org/10.23919/at-ap-rasc54737.2022.9814376
Autor:
Bruno Tribovane, Rafael Caldeirinha
Publikováno v:
2022 16th European Conference on Antennas and Propagation (EuCAP).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d4d07565c330d37bb13f07178f2a189
https://doi.org/10.23919/eucap53622.2022.9769211
https://doi.org/10.23919/eucap53622.2022.9769211
Publikováno v:
2020 14th European Conference on Antennas and Propagation (EuCAP).
This paper presents preliminary results about path loss prediction in vegetation using the parabolic equation technique. The trees were modelled in a flat and a triangular format and their effect in the path loss was analysed. A real measurement scen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e76444514dc969d081e71eacfecde34b
https://doi.org/10.23919/eucap48036.2020.9135368
https://doi.org/10.23919/eucap48036.2020.9135368
Publikováno v:
AEU - International Journal of Electronics and Communications. 89:110-115
In this paper, a compact coplanar waveguide (CPW) based dual-band bandpass filter has been proposed. The modified complementary split ring resonator (CSRR) structure at CPW ground plane is investigated for designing of dual-band bandpass filter with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0be6836470d014db5fe3020ee307a523
https://doi.org/10.1016/j.aeue.2018.03.032
https://doi.org/10.1016/j.aeue.2018.03.032
Publikováno v:
Sensors & Transducers, Vol 204, Iss 9, Pp 29-38 (2016)
This paper presents a detailed analysis of the impact of multipath propagation phenomena on the performance of mm Wave wireless systems for both uncoded and coded OFDM architectures, based on IEEE 802.15.3c standard for high data rate applications. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::b5e15f6388338819cc537d1cd0f114f6
http://www.sensorsportal.com/HTML/DIGEST/september_2016/Vol_204/P_2857.pdf
http://www.sensorsportal.com/HTML/DIGEST/september_2016/Vol_204/P_2857.pdf
Autor:
Rafael Caldeirinha
Publikováno v:
Journal of Empirical Legal Studies. 14:652-652
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33fc5cba60db7dd4fc5a66ae902805f4
https://doi.org/10.1111/jels.12159
https://doi.org/10.1111/jels.12159