Exploració per autor "Romeu Robert, Jordi"
Ara es mostren els items 37-56 de 248
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Antenna input impedance measurement using multi-load MST
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents the practical use of modulated scatterer technique (MST) for the measurement of the antenna input impedance using a multi-load automatic switching device, and it also includes the analysis of the ... -
Antenna packaging for in-body applications
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertA cylindrical mode expansion of the fields produced by an embedded antenna is used to determine the dimensions of the antenna packaging in order to minimize antenna impedance changes when the antenna is immersed in a varying ... -
Antenna reconfigurability based on a novel parasitic pixel layer
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialA novel reconfiguration method based in the use of pixel surfaces as parasitic elements is presented. This concept can be used to provide reconfigurability to a wide variety of non-reconfigurable antennas without requiring ... -
Aplicación del método de la descomposición modal al análisis de radomos esféricos
(Universidad de Málaga, 1992)
Text en actes de congrés
Accés obert -
Aprendizaje y asistencia virtual en red
(2011-01-20)
Report de recerca
Accés obertFavorecer el uso de las Tecnologías de Información y la Comunicación (TIC) en entornos educativos puede abarcar varios aspectos del proceso de aprendizaje. La incorporación de TICs en las aulas contribuye, por un lado a ... -
Aprendizaje y asistencia virtual en red /Aprenentatge i assistència virtual en xarxa
(Universitat Politècnica de Catalunya. Càtedra Telefónica-UPC, 2011-01)
Llibre
Accés obert -
Aprendizaje y asistencia virtual en red : la prueba Piloto : Cátedra Telefófica UPC : Análisis de le evolución y tendencias futuras de la sociedad de la información
(2011-07-29)
Report de recerca
Accés obertHemos llevado a cabo una prueba piloto, demostradora del uso de las tecnologías del lenguaje y el habla aplicadas al aprendizaje de inglés. En general, se espera que la actividad acerque al alumno el máximo posible a la ... -
Are space-filling curves efficient small antennas?
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC., 2003-09-30)
Article
Accés obertThe performance of space-filling curves used as small antennas is evaluated in terms of quality factor and radiation efficiency. The influence of their topology is also considered. Although the potential use of these ... -
Assessment of 3-D printing technologies for millimeter-wave reflectors
(Institute of Electrical and Electronics Engineers (IEEE), 2018-07-20)
Article
Accés obertThree different 3D printing technologies: Stereolithography (SLA), Fused Deposition Modeling (FDM) and HP Multi Jet Fusion Technology (MJF) are compared to build a parabolic reflector operating at 100 GHz. Fabrication ... -
Assessment of LTCC-based dielectric flat lens antennas and switched-beam arrays for future 5G millimeter-wave communication systems
(2017-10-30)
Article
Accés obertIEEE This paper presents design, LTCC fabrication, and full experimental verification of novel dielectric flat lens antennas for future high data rate 5G wireless communication systems in the 60 GHz band. We introduce and ... -
Assessment of mmwave handset arrays in the presence of the user body
(Institute of Electrical and Electronics Engineers (IEEE), 2021-01-01)
Article
Accés obertThe emergence of mobile terminals operating at millimeter-wave frequencies necessitates the ability to evaluate the effect the environment, and in particular, users have on their radiation properties. Some studies evaluated ... -
Automatic polyp detection using microwave endoscopy for colorectal cancer prevention and early detection: phantom validation
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Article
Accés obertA system to integrate microwave imaging with optical colonoscopy is presented. The overarching goal is to improve the prevention and early diagnosis of one of the main health and economic burdens of an increasingly aging ... -
Automotive radar and radome calibration to improve the direction of arrival detection performance
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialAn assessment of the improvement in the Direction of Arrival (DoA) measurements in automotive radar sensor by joint calibration of the radar sensor plus the radome is presented. Nowadays, radar sensors are calibrated before ... -
Beamforming antennas for 60 GHz positioning systems
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper we analyze the benefit of using phased arrays as the receiving antennas of indoor location systems. A 60 GHz code division multiple access carrier-based ultra-wide band positioning system for the simultaneous ... -
Break point analysis and modelling in subway tunnels
(2009)
Text en actes de congrés
Accés obertThe time constraints in network developments inside tunnels require a characterisation of canonical tunnels in terms of propagation path losses and developing a slope model which is usually represented as a two slope ... -
Calibration alignment sensitivity in corneal terahertz imaging
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-04-22)
Article
Accés obertImproving the longitudinal modes coupling in layered spherical structure contributes significantly to corneal terahertz sensing, which plays a crucial role in the early diagnosis of cornea dystrophies. Using a steel sphere ... -
Caracterizacion polarimetrica de blancos radar
(Universidad de Málaga, 1992)
Text en actes de congrés
Accés obert -
Caracterización de antenas mediante termografías de infrarrojos
(1998)
Text en actes de congrés
Accés obert -
Channel matrix characterization in MIMO scenario through impedance modulation
(2010)
Text en actes de congrés
Accés obertIn this paper a new measurement setup to obtain the characteristic channel matrix of a MIMO radio system is presented using a small and non intrusive device able to characterize two antennas and therefore obtaining the ... -
Characterization of a 94 GHz radiometric imager with mechanical beam-scanning
(IEEE, 2011)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents the characterization in terms of spatial resolution and radiometric sensitivity of a W-band Total Power Radiometer (TPR). The TPR is based on a heterodyne receiver with 64 dB of gain and 6.5 dB of noise ...
