RF&MW - Grup de Recerca de Sistemes, Dispositius i Materials de RF i Microones
Col·leccions
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Articles de revista [200]
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Reports de recerca [11]
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Programari [1]
Enviaments recents
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Microstrip-fed 3D-printed H-sectorial horn phased array
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-07-16)
Article
Accés obertA 3D-printed phased array consisting of four H-Sectorial horn antennas of 200 g weight with an ultra-wideband rectangular-waveguide-to-microstrip-line transition operating over the whole LMDS and K bands (24.25–29.5 GHz) ... -
SMOS instrument performance after more than 11 years in orbit
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertESA's Soil Moisture and Ocean Salinity (SMOS) mission [1] has been in orbit for over 11 years, and its Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) in two dimensions keeps being fully operational. This ... -
Increasing stratification as observed by satellite sea surface salinity measurements
(Nature, 2022-12-01)
Article
Accés obertChanges in the Earth’s water cycle can be estimated by analyzing sea surface salinity. This variable refects the balance between precipitation and evaporation over the ocean, since the upper layers of the ocean are the ... -
X-parameters based characterization of PIN diodes for reconfigurable antenna assessment
(Íñigo Cuiñas Gómez, 2021)
Text en actes de congrés
Accés restringit per política de l'editorialThis contribution presents the non-linear characterization up to 50 GHz of a PIN diode commonly used as switch for reconfigurable devices at microwave applications. Non-linear models are extracted by means of X-parameter ... -
Evaluation of the nonlinear surface resistance of REBCO coated conductors for their use in the FCC-hh beam screen
(2022-01-07)
Article
Accés obertTo assess the feasibility of using high-temperature superconductors for the beam screens of future circular colliders, we have undertaken a study of the power dependence of the microwave surface resistance in state-of-the-art ... -
RF characterisation of new coatings for future circular collider beam screens
(Joint Accelerator Conferences Website (JACoW), 2021)
Comunicació de congrés
Accés obertFor the future high energy colliders being under the design at this moment, the choice of a low surface impedance beam screen coating material has become of fundamental importance to ensure sufficiently low beam impedance ... -
Design of minimum nonlinear distortion reconfigurable antennas for next-generation communication systems
(2021-04-01)
Article
Accés obertNonlinear effects in the radio front-end can degrade communication quality and system performance. In this paper we present a new design technique for reconfigurable antennas that minimizes the nonlinear distortion and ... -
A simple low-cost electrocardiogram synchronizer
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-09-01)
Article
Accés obertElectrocardiogram (ECG) synchronization is useful to avoid the effects of cardiac motion in medical measurements, and is widely used in standard medical imaging. A number of medical equipment include embedded commercial ... -
Rayleigh backscattering rejection in single-laser homodyne transceiver for UD-WDM using λ-Shifting
(2021-04-01)
Article
Accés obertWith the aim of using a single laser per transceiver in single fiber splitter-based passive optical networks (PON) with coherent homodyne receivers, we apply wavelength shifting in an ultra-dense wavelength division ... -
A novel digital IQ demodulation for interferometric radiometers
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-02)
Article
Accés obertIn the frame of an SMOS follow-on operational mission, a new instrument design is being developed based on the lessons learned from MIRAS, the SMOS payload. To reduce hardware complexity and mass, digital In-phase Quadrature ... -
Characterisation of copper and stainless steel surfaces treated with laser ablation surface engineering
(2021-07)
Article
Accés obertIn the past few years, it has been established that Laser Ablation Surface Engineering (LASE) is a very effective way of producing surfaces which have Secondary Electron Yields (SEY)¿<¿1. This can be achieved with a variety ... -
Optical phase effects in reconfigurable microwave photonic filters with multiple wavelength input
(2021-11)
Article
Accés obertMicrowave photonic filters with a multiple wavelength input are analyzed. A comprehensive model assessing the impact of the phase characteristic of the optical stage is presented from which optimized design rules have been ...