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Acoustic wave transversal filter for 5G N77 band
(Institute of Electrical and Electronics Engineers (IEEE), 2021-10-01)
Article
Open AccessThis work presents the complete synthesis procedure and circuit transformations needed to go from the characteristic polynomials to the transversal network formed by electroacoustic resonators. This filter topology allows ... -
Machine-Learning assisted optimisation of free-parameters of a dual-input power amplifier for wideband applications
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-17)
Article
Open AccessThis paper presents an auto-tuning approach for dual-input power amplifiers using a combination of global optimisation search algorithms and adaptive linearisation in the optimisation of a multiple-input power amplifier. ... -
Industria y transición energética
(2022-03-18)
Article
Open AccessLa situación de emergencia climática que como sociedad estamos padeciendo, y la crisis energética derivada del previsible agotamiento de los combustibles fósiles en un plazo de no más de cincuenta años, nos pone en la ... -
Reconfigurable DPD based on ANNs for wideband load modulated balanced amplifiers under dynamic operation from 1.8 to 2.4 GHz
(IEEE Microwave Theory and Techniques Society, 2021-01-01)
Article
Open AccessThis article proposes a methodology to ensure linear amplification of a load modulated balanced amplifier (LMBA) while keeping the power efficiency as high as possible over a frequency band ranging from 1.8 to 2.4 GHz and ... -
Mesh-Selecting for Computational Efficient PA Behavioral Modeling and DPD Linearization
(2021-01)
Article
Restricted access - publisher's policyThis letter proposes a mesh-selecting (MeS) method for complex-valued signals oriented at significantly reducing the training data required to extract the parameters of mathematical models for characterizing the nonlinear ... -
El conflicto del 5G y la aeronáutica
(2022-03-16)
Article
Open AccessEl pasado 19 de enero saltó la polémica en Estados Unidos ante la inminente puesta en servicio por parte de las operadoras de telecomunicaciones Verizon, ATT y T-Mobile, adjudicatarias de la subasta de espectro radioeléctrico ... -
Emerging technologies applied to the agrifood sector
(2020-01)
Article
Open AccessThe sustainable development goals proposed by the 2030 Agenda include: putting an end to hunger, achieving food security, improving nutrition and promoting sustainable agriculture. Many different initiatives ... -
UAV generalized longitudinal model for autopilot controller designs
(2021-11-16)
Article
Open AccessThis paper aims to overcome the main obstacle to compare the merits of the different control strategies for fixed-wing unmanned aerial vehicles (UAVs) to assess autopilot performances. Up to now, the published studies of ... -
Comparison of feature selection techniques for power amplifier behavioral modeling and digital predistortion linearization
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-08-27)
Article
Open AccessThe power amplifier (PA) is the most critical subsystem in terms of linearity and power efficiency. Digital predistortion (DPD) is commonly used to mitigate nonlinearities while the PA operates at levels close to saturation, ... -
Beyond the Moore-Penrose inverse: Strategies for the estimation of digital predistortion linearization parameters
(2020-12)
Article
Open AccessDigital predistortion (DPD) is the linearization technique most often used to cope with the inherent tradeoff between linearity and efficiency in power amplifiers (PAs). Adaptation is needed to optimize DPD performance. ... -
Tone injection-based cancellation technique for nonlinear distortion reduction of modulated signals in BAW resonators
(2020-01-01)
Article
Open AccessA technique for the reduction of third-order intermodulation distortion (IMD3) occurring in bulk acoustic wave (BAW) filters and multiplexers is presented. The method consists of using the intrinsic second-order intermodulation ... -
The Input-output equivalent sources method for fast simulations of distributed nonlinearities in bulk acoustic wave resonators and filters
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Article
Open AccessThis work presents a new method to analyze weak distributed nonlinear effects, with focus on the generation of harmonics (H) and intermodulation products (IMD) in bulk acoustic wave resonators and filters composed of them. ...
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