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Listar por palabra clave "Frequency measurement"

Mostrando ítems 1-11 de 11

Analysis of System Imperfections in a Photonics-Assisted Instantaneous Frequency Measurement Receiver Based on a Dual-Sideband Suppressed-Carrier Modulation

Sánchez Fandiño, Javier Antonio; Muñoz Muñoz, Pascual (Institute of Electrical and Electronics Engineers (IEEE), 2015-01-15)

[EN] Instantaneous frequency measurement receivers are a well-established technology that is used for the ultrafast characterization of pulsed microwave signals over a broad bandwidth. Recently, numerous photonic approaches ...
Analysis of the Rician K Factor in a Typical Millimeter-Wave Office Scenario

Rubio Arjona, Lorenzo; Rodrigo Peñarrocha, Vicent Miquel; Reig, Juan; Fernandez, H; Pérez, Jesus R.; Torres, Rafael P.; Valle, Luis (Institute of Electrical and Electronics Engineers, 2024-05)

[EN] In this letter, the K-factor is estimated in a typical office scenario based on wideband channel measurements carried out at millimeter-wave (mmWave) frequencies, covering the 25-40 GHz spectrum, in both line-of-sight ...
Design and implementation of a low cost isotropic electric field sensor for SAR measurements

Quispe, Marco; Samaniego, Javier; Olivares, Jorge; Adriano, Rolando; Pérez, B.; Inca, Saúl (Institute of Electrical and Electronics Engineers, 2024-11)

[EN] Specific Absorption Rate (SAR) measurement systems are used to evaluate exposure to fields radiated by wireless devices placed close to people's bodies. One of the fundamental elements of these systems is an isotropic ...
Millimeter Wave MISO-OFDM Transmissions in an Intra-Wagon Environment

Sanchis Borrás, Concepción; Molina-García-Pardo, José-María; Rubio Arjona, Lorenzo; Pascual-García, Juan; Rodrigo Peñarrocha, Vicent Miquel; Juan Llacer, Leandro; Reig, Juan (Institute of Electrical and Electronics Engineers, 2021-08)

[EN] In this paper, the maximum achievable throughput is analyzed in the intra-wagon channel when multiple-input single-output (MISO) and orthogonal frequency division multiplexing (OFDM), MISO-OFDM, techniques are used. ...
On the Contribution of Dense Multipath Components in an Intrawagon Environment for 5G mmW Massive MIMO Channels

Challita, Frédéric; Rodrigo Peñarrocha, Vicent Miquel; Rubio Arjona, Lorenzo; Reig, Juan; Juan-Llácer, Leandro; Pascual-García, Juan; Molina-García-Pardo, José-María; Liénard, Martine; Gaillot, Davy P. (Institute of Electrical and Electronics Engineers, 2019-12)

[EN] In this letter, the dependence of the specular multipath components (SMC) and dense multipath components (DMC) to the interuser spatial correlation and sum-rate capacity of a massive multiuser multiple-input--multiple-output ...
Photonic RF Frequency Measurement Combining SSB-SC Modulation and Birefringence

Mengual Chulia, Teresa; Vidal Rodriguez, Borja; Martí Sendra, Javier (Elsevier, 2010-07-01)

[EN] A new technique to instantaneously measure microwave frequency and amplitude is presented and experimentally demonstrated. The architecture described is based on a single sideband modulation with suppressed carrier ...
Remote Reconfiguration of Microwave Filters Using Dielectric Tuners

Sharma, Abhishek; Ossorio, Javier; Smacchia, Davide; Tronser, Tillman; Cogollos, Santiago; Boria Esbert, Vicente Enrique; Guglielmi, Marco (Institute of Electrical and Electronics Engineers, 2023-07)

[EN] The objective of this article is to explore the use of dielectrics to reconfigure remotely microwave filters in rectangular waveguide. To start, we study experimentally the phase shift that is achievable using dielectric ...
Wideband Electromagnetic Body Phantoms for the Evaluation of Wireless Communications in the Microwave Spectrum

Castelló Palacios, Sergio (Universitat Politècnica de València, 2019-12-02)

[ES] La constante evolución de la tecnología y la búsqueda de nuevas aplicaciones que mejoren la vida de las personas ha llevado a la incorporación de estas tecnologías en el organismo. Las redes inalámbricas de área ...
Wideband phantoms of different body tissues for heterogeneous models in body area networks

Castelló-Palacios, Sergio; Garcia-Pardo, Concepcion; Fornés Leal, Alejandro; Cardona Marcet, Narciso; Vallés Lluch, Ana (IEEE, 2018-11-14)

[EN] One of the key issues about wireless technologies is their interaction with the human body. The so-called internet of things will comprise many devices that will transmit either around or through the human body. These ...
Wireless Channel Analysis Between 25 and 40 GHz in an Intra-Wagon Environment for 5G Using a Ray-Tracing Tool

Pascual García, Juan; Rubio Arjona, Lorenzo; Rodrigo Peñarrocha, Vicent Miquel; Juan-Llácer, Leandro; Molina-García-Pardo, José María; Sanchis-Borrás, Concepción; Reig, Juan (Institute of Electrical and Electronics Engineers, 2022-12)

[EN] Metro and railway systems are one of the most used transportation systems for people in almost all countries. Nevertheless, the access to high throughput wireless services is still very limited inside the wagons (cars). ...
Wireless Channel Characterization From 2 to 28 GHz in an Outdoor Parking Lot

Molina-García-Pardo, José María; Rubio Arjona, Lorenzo; Martínez-Inglés, María Teresa; Egea-Lopez, Esteban; Mateo-Aroca, Antonio; Rodrigo Peñarrocha, Vicent Miquel; Reig, Juan (Institute of Electrical and Electronics Engineers, 2024-05)

[EN] This letter presents wideband measurements and simulations ranging from 2 to 28 GHz conducted in a parking lot, with and without cars. The measurements have been carried out considering a transmitter placed in an ...