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Listar por palabra clave "Radio frequency"

Mostrando ítems 1-20 de 20

Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite

Gonzalez Iglesias, Daniel; Gomez, Alvaro; Gimeno Martinez, Benito; Fernández, o.; Vegas, A.; Casas, Fernando; Anza Hormigo, Sergio; Vicente Quiles, Carlos Pascual; Gil Raga, Jordi; Mata Sanz, Rafael; Montero, Isabel; Boria Esbert, Vicente Enrique; Raboso García-Baquero, David (Institute of Electrical and Electronics Engineers (IEEE), 2016-12)

In this paper, the multipactor RF breakdown in a parallel-plate waveguide partially filled with a ferrite slab magnetized normal to the metallic plates is studied. An external magnetic field is applied along the vertical ...
Design and simulation of dual-band RF energy harvesting antenna for WSNs

Bakkali, Asma; Pelegrí Sebastiá, José; Sogorb Devesa, Tomás; Bou Escrivà, Antoni; Lyhyaoui, Abdel (Elsevier, 2017)

[EN] Radio frequency energy harvesting is attracting an increasing deal of attention in order to provide power to the electronic devices, including Wireless Sensor Networks. In this context, we focus on ambient radiofrequency ...
DVB-S2 and DVB-T RF Transmission in 1-mm GI-POF System

Beltrán Ramírez, Marta; Cabezón, Xabier; Campo, Miguel A.; Trueba, Roberto; Lekue, Antonio; Pac, Jose M.; Cortés, Francisco J.; Llorente Sáez, Roberto (Institute of Electrical and Electronics Engineers (IEEE), 2014-08-15)

An optical system for the transmission of digital video broadcasting (DVB) signals is proposed and experimentally demonstrated. The transmission media comprises 1-mm diameter graded-index plastic optical fiber (GI-POF) ...
Electromagnetic pulse generation in laser-proton acceleration from conductive and dielectric targets

Seimetz, Michael; Bellido, P.; Mur, P.; Lera, R.; Ruiz-de la Cruz, A.; Sánchez, I.; Zaffino, R.; Benlliure, J.; Ruiz, C.; Roso, L.; Benlloch Baviera, Jose María (IOP Publishing, 2020-11)

[EN] Laser-plasma interactions at high intensities are often accompanied by emission of a strong electromagnetic pulse (EMP) interfering with particle detectors or other electronic equipment. We present experimental evidence ...
Energy-Autonomous Roadside Nodes in V2I Using RF Energy Harvesting

Gimenez-Guzman, Jose Manuel; Leyva-Mayorga, Israel; Azarbahram, Amirhossein; López, Onel Alcaraz; Popovski, Petar (IEEE Communications Society, 2024)

[EN] Future intelligent transportation systems will require complex networking infrastructures with communication among a huge number of vehicles and roadside nodes to support services such as autonomous driving. However, ...
Fotónica aplicada a la monitorización de procesos y al desarrollo de sensores en la industria agroalimentaria

Tomás Egea, Juan Ángel (Universitat Politècnica de València, 2022-04-29)

[ES] El objetivo de la presente tesis es el de desarrollar y utilizar técnicas basadas en la fotónica de baja frecuencia, como la radiofrecuencia, las microondas y los infrarrojos, para monitorizar de forma no destructiva ...
High Power RF Discharge Detection Technique Based on the In-Phase and Quadrature Signals

Monerris-Belda, Oscar; Cervera Marín, Raúl; Rodríguez Jodar, Miguel; Diaz-Caballero, Elena; Alcaide Guillén, Carlos; Petit, John; Boria Esbert, Vicente Enrique; Gimeno, Benito; Raboso, David (Institute of Electrical and Electronics Engineers, 2021-12)

[EN] High power radio frequency (RF) breakdown testing is a subject of great relevance in the space industry, due to the increasing need of higher transmission power and smaller devices. This work presents a novel RF ...
Hot air drying characteristics and nutrients of apricot armeniaca vulgaris lam pretreated with Radio Frequency(RF)

Peng, M.C.; Liu, J.X.; Lei, Y.; Yang, X.J.; Wu, Z.H.; Huang, X.L. (Editorial Universitat Politècnica de València, 2018-09-07)

[EN] Apricot pretreated with RF and then dried with convective hot air at 65℃, 3.0m/s in this research. RF pretreatment time of 20, 30, 40 and 50min were chosen. Results showed that, there is only falling rate period during ...
Improved open-ended coaxial probe for temperature-dependent permittivity measurements of foodstuff at radio frequencies

Gutiérrez Cano, José Daniel; Catalá Civera, José Manuel; Penaranda-Foix, Felipe L.; Plaza González, Pedro José (Elsevier, 2022-03)

[EN] Accurate determination of permittivity is a crucial factor for successfully developing new food processing technologies at radio frequencies. An improved measurement test fixture based on an open-ended coaxial probe ...
In-Depth Study of the Corona Discharge Breakdown Thresholds in Groove Gap Waveguides and Enhancement Strategies for Inductive Bandpass Filters

Morales-Hernández, Aitor; Sánchez-Soriano, Miguel Ángel; Ferrando-Rocher, Miguel; Marini, Stephan; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2022)

[EN] This work focuses on the study of the corona discharge breakdown in groove gap waveguides (GGWs) and inductive bandpass filters (BPFs) based on this technology. With the main aim of improving the peak power handling ...
Integrated Microwave Photonics Coherent Processor for Massive-MIMO Systems in Wireless Communications

Martínez-Carrasco Romero, Pablo; Rausell-Campo, Jose Roberto; Pérez-Galacho, Diego; Li, Xu; Qing, Ting; Pérez-López, Daniel; Wang, Tiangxiang (Institute of Electrical and Electronics Engineers, 2023-11)

[EN] Massive-MIMO systems can achieve high capacities and data rates by increasing the number of operational antennas in the base station. As more antenna elements are introduced, the complexity of the signal processing ...
Load based dynamic channel allocation model to enhance the performance of device-to-device communication in WPAN

Logeshwaran, J.; Shanmugasundaram, R. N.; Lloret, Jaime (Springer-Verlag, 2024-05)

[EN] The modern communication network has advanced to such an extent that it is now possible for devices within a wireless personal area network (WPAN) to communicate among themselves directly. However, the limited shared ...
Localización precisa de activos y humanos en espacios cerrados para seguridad en entornos industriales

Cabrera Castro, Bárbara María (Universitat Politècnica de València, 2021-01-19)

[ES] Los sistemas RTL (Real Time Location) han permitido hasta el momento el desarrollo de aplicaciones de localización basadas en señales de radiofrecuencia con precisión suficientemente aceptable para la localización, ...
New sensor to measure the microencapsulated active compounds released in an aqueous liquid media based in dielectric properties in radiofrequency range

Tomas-Egea, Juan Angel; Fito, Pedro J.; Colom Palero, Ricardo José; Castro Giraldez, Marta (MDPI AG, 2021-09)

[EN] In recent years, the general and scientific interest in nutrition, digestion, and what role they play in our body has increased, and there is still much work to be carried out in the field of developing sensors and ...
Novel Prediction Methods of Multicarrier Multipactor for Space Industry Standards

Anza, Sergio; Puech, Jerome; Raboso, David; Wochner, Ulrich; Mader, Philippe; Koch, Olivier; Angevain, Jean-Christophe; Hong, Un-Pyo; Magnusson, Per; Montero, Isabel; Belhaj, Mohamed; Petit, John; Gil, Jordi; Vicente, Carlos; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2022-01)

[EN] Multipactor prediction methods are of high relevance for the space industry in order to prevent its appearance during the design phase of RF high-power components. Up to the present time, prediction for multicarrier ...
Photonic Microwave Filter With Steep Skirt Selectivity Based on Stimulated Brillouin Scattering

Samaniego-Riera, Diego; Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers (IEEE), 2016-12)

A method to enhance the filter slope of Brillouin-based photonic microwave filters is presented. This improvement is achieved by the combination of Brillouin gain and loss responses over phase-modulated signals. The ...
Prediction of the Estimated Time of Arrival of container ships on short-sea shipping: A pragmatical analysis

Valero, Clara I.; Martínez, Ángel; Oltra Badenes, Raúl Francisco; Gil Gómez, Hermenegildo; Boronat, Fernando; Palau Salvador, Carlos Enrique (Institute of Electrical and Electronics Engineers, 2022-11)

[EN] Fighting against climate change and global warming is one of the biggest challenges faced by the Maritime Industry nowadays to make the supply chain greener and environmentally sustainable. Cutting greenhouse gases ...
Study of the Multipactor Effect in Groove Gap Waveguide Technology

Vague Cardona, José Joaquín; Asensio, Irene; Coves, Ángela; San Blas, Ángel A.; Reglero Mangada, Marta Sofía; Vidal Pantaleoni, Ana; Raboso, David; Baquero Escudero, Mariano; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2022-05)

[EN] This article presents a theoretical and experimental comparative study of the different multipactor threshold values obtained in the rectangular waveguide (RW) and the groove gap waveguide (GGW). To this end, the ...
Study of the Secondary Electron Yield in Dielectrics Using Equivalent Circuital Models

Bañón, David; Socuellamos, J. M.; Mata-Sanz, Rafael; Mercadé-Morales, Laura; Gimeno Martínez, Benito; Boria Esbert, Vicente Enrique; Raboso García-Baquero, David; Semenov, V.; Rakova, E.I; Sánchez-Royo, J. F.; Segura García del Río, Alfredo (Institute of Electrical and Electronics Engineers, 2018)

[EN] Secondary electron emission has an important role on the triggering of the multipactor effect; therefore, its study and characterization are essential in radio-frequency waveguide applications. In this paper, we propose ...
Virtual instrumentation: First step towards a virtual laboratory

Rodrigo Peñarrocha, Vicent Miquel; Ferrando Bataller, Miguel (IEEE, 2000-04-29)

[EN] In this paper the use ofvirtual instrumentation in radio frequency educational laboratories is discussed. In these laboratories students can use instruments in the classic way (looking at the display and changing ...