Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Marco Cardenas"'
Autor:
Jorge Simon, Emmanuel Hernandez-Gonzalez, Juvenal Villanueva-Maldonado, Gustavo Vera-Reveles, Pablo-Armando Alcaraz-Valencia, Victor H. Castillo-Topete, Leonel Soriano-Equigua, Fermin Marcelo Maciel-Barboza, Jorge Flores-Troncoso, Jose Ricardo Gomez-Rodriguez, Marco Cardenas-Juarez, Jose Alvarez-Flores
Publikováno v:
International Journal of Antennas and Propagation, Vol 2024 (2024)
In this article, a comparison of the absorption properties of 7 common agricultural waste materials from the state of Colima in Mexico is performed. The study carried out at X-band frequencies finds that the highest absorption levels were mainly from
Externí odkaz:
https://doaj.org/article/96a9612c701240a9b2f51e6d19cf19d5
Autor:
Carlos A. Gomez-Vega, Jorge Cardenas, Juan C. Ornelas-Lizcano, Carlos A. Gutierrez, Marco Cardenas-Juarez, Jose M. Luna-Rivera, Ruth M. Aguilar-Ponce
Publikováno v:
IEEE Access, Vol 10, Pp 27162-27184 (2022)
This paper describes the implementation of a Doppler spectrum measurement platform for narrowband frequency-dispersive vehicle-to-vehicle (V2V) channels. The platform is based on a continuous-wave (CW) channel sounding approach widely used for path-l
Externí odkaz:
https://doaj.org/article/197ef50dfd334b50b6eb5bab047b9250
Autor:
Jorge Simon, Hugo Perez-Guerrero, Jorge Sosa-Pedroza, Fabiola Martínez-Zúñiga, Juvenal Villanueva-Maldonado, Jorge Flores-Troncoso, Marco Cardenas-Juarez
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
As in any satellite, onboard antennas for CubeSats are crucial to establish communication with ground stations or other satellites. According to its application, antennas must comply with standardized requirements related to size, bandwidth, operatin
Externí odkaz:
https://doaj.org/article/753505ba88f74771bb3cc03db73e5dc8
Autor:
Jorge Simon, Jorge Flores-Troncoso, Jose Luis Alvarez-Flores, Leonel Soriano-Equigua, Marco Cardenas-Juarez, Armando Arce, Edgar Briones, Jorge Sosa-Pedroza
Publikováno v:
International Journal of Antennas and Propagation, Vol 2020 (2020)
This article presents the design, fabrication, and measurement of a square Koch fractal slot antenna for UHF band using both the FR4-G10 and Cuclad 250 substrates. Conveniently, this 56.56 cm full-length antenna possesses a geometry that allows it to
Externí odkaz:
https://doaj.org/article/99c3022afcbc419aa2412882f8b2f7fb
Autor:
Jorge Simón, J. Villanueva-Maldonado, Francisco R. Castillo-Soria, Marco Cardenas-Juarez, Edgar Briones, Remberto Sandoval-Arechiga, Leonel Soriano-Equigua, José L. Alvarez-Flores
Publikováno v:
International Journal of Antennas and Propagation, Vol 2019 (2019)
In this work, a comparison of the microwave absorption properties of Opuntia ficus-indica cladodes, Agave atrovirens branches, and Cocos nucifera L. husk samples was performed. The study was carried out by inserting dry and powdered samples of these
Externí odkaz:
https://doaj.org/article/21cc43821512409c843690a4eedd3ab1
Autor:
Armando Arce, Enrique Stevens-Navarro, Marco Cardenas-Juarez, Ulises Pineda-Rico, Jorge Simon, Marco A. Panduro
Publikováno v:
International Journal of Antennas and Propagation, Vol 2019 (2019)
In this work, a flexible and reconfigurable feeding network design for a nonuniform aperture on circular concentric ring arrays is proposed and analyzed. The network subsystem delivers coherent in-phase outputs with a Gaussian-like amplitude distribu
Externí odkaz:
https://doaj.org/article/d5a8595ccc604335900eed1a80d28209
Autor:
Armando Arce, Enrique Stevens-Navarro, Ulises Pineda-Rico, Marco Cardenas-Juarez, Francisco R. Castillo-Soria, David H. Covarrubias
Publikováno v:
Applied Sciences, Vol 11, Iss 3, p 1111 (2021)
A dual-beam coherent feeding system design approach with a non-uniform layout on a concentric ring array is described and synthesized. In this case, the feeding system is based on a reconfigurable topology composed of a set of alternated power divide
Externí odkaz:
https://doaj.org/article/c3f1f73decc240a8a6c7914d61849eda
Autor:
Lizeth Lopez-Lopez, Marco Cardenas-Juarez, Enrique Stevens-Navarro, Ulises Pineda-Rico, Armando Arce, Aldo G. Orozco-Lugo
Publikováno v:
Sensors, Vol 19, Iss 11, p 2425 (2019)
This paper presents an approach to exploit the superimposed training (ST)-based primary users’ (PUs) transmissions in the context of spectrum sensing for cognitive radio. In the low signal-to-noise ratio (SNR), the proposed scheme splits the spectr
Externí odkaz:
https://doaj.org/article/a7451606e7fe415581ca4215d9d9db56
Autor:
Armando Arce, Marco Cardenas-Juarez, Ulises Pineda-Rico, David H. Covarrubias, Enrique Stevens-Navarro
Publikováno v:
International Journal of Antennas and Propagation, Vol 2015 (2015)
This paper proposes an alternative and innovative way to design a simpler beamforming network (BFN) based on balancing alternated power combiners and dividers, to feed a nonuniformly spaced linear array with Gaussian amplitude and coherent (in-phase)
Externí odkaz:
https://doaj.org/article/4e0d90be179142b1900a0d99e324d33d
Publikováno v:
IET Communications. 14:1147-1154
This study presents a multiuser (MU) multiple-input multiple-output (MIMO) downlink transmission scheme based on the quadrature spatial modulation (QSM) concept, which uses the indices of the non-zero entries in its transmission vector to modulate an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e96834f2f953637f832b1fec42c2b626
https://doi.org/10.1049/iet-com.2019.0573
https://doi.org/10.1049/iet-com.2019.0573