Exploració per tema "Power amplifiers"
Ara es mostren els items 21-40 de 132
-
Amplificador de potencia en banda ka
(1990)
Text en actes de congrés
Accés obert -
Amplificador de potencia LDMOS classe E @ 700 Mhz
(Universitat Politècnica de Catalunya, 2009-07-24)
Treball Final de Grau
Accés obert -
An alternative method to quantify the electromagnetic immunity based on the Weibull distribution
(2013)
Article
Accés obertIt is accepted that the electromagnetic interference should be addressed with statistical analysis. Usually the impact of electromagnetic interference on different electronic samples is evaluated and the average immunity ... -
An efficient combination of digital predistortion and OFDM clipping for power amplifiers
(2009-09)
Article
Accés restringit per política de l'editorial -
An enhanced switching policy for buck-derived multi-level switching power amplifiers
(2010)
Text en actes de congrés
Accés obertThis work proposes a switching policy for multi-level fullbridge switching power converters and analyses their performance by driving them with a multi-level PWM modulation, targeting highefficiency power amplifiers. ... -
Analysis of diversity and equalization techniques applied to M-QAM digital mobile radio systems
(Institute of Electrical and Electronics Engineers (IEEE), 1994)
Text en actes de congrés
Accés obertPresents an investigation of diversity and/or equalization techniques applied to 4 and 16-QAM TDMA radio systems for rapid fading dispersive channels. In particular, typical urban (TU) environments have been considered. A ... -
Analysis of inter-modulation products and nonlinear distortion in RF OFDM transmitter systems
(IEEE, 2009)
Text en actes de congrés
Accés obert -
Aplicación de técnicas avanzadas de lienalización a sistemas de RF/microondas
(Editorial de la UPV, 2005)
Text en actes de congrés
Accés obert -
Application of pptimal delays selection on parallel cascade Hammerstein models for the prediction of RF-power amplifier behavior
(2006-12)
Comunicació de congrés
Accés obertIn this work two different black-box modeling strategies are combined in order to achieve improved RF Power Amplifier (PA) models based on measured input/output signals. The model validation is here done within the low ... -
Assessment of the peak-to-average power ratio in different channel organization strategies
(2016-06)
Article
Accés obertThe benefits of organizing multichannel communications by fragmenting the data in bonded or in aggregated channels have been usually assessed at the media access control layer, being the network traffic the purpose of the ... -
Behavioral modeling and linearization of a mm-wave power amplifier
(2009-04)
Article
Accés obert -
Beyond the Moore-Penrose inverse: Strategies for the estimation of digital predistortion linearization parameters
(2020-12)
Article
Accés obertDigital 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. ... -
Circuit/system design space characterization of EER-based transmitter for 802.11a WLAN standard
(2010)
Text en actes de congrés
Accés obertDue to the increase of required bandwidth, the newer generation of communication systems uses spectrum-efficient digital modulations that involve non-constant envelope RF signals. A technique that potentially can concurrently ... -
Clamping diode caused distortion in multilevel NPC Full-Bridge audio power amplifiers
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents a study and analysis of the distorting effects of clamped diodes in multilevel DCI-NPC topology applied to high power and high quality audio-amplifier. The main distorting sources of error are characterized, ... -
Comparison of feature selection techniques for power amplifier behavioral modeling and digital predistortion linearization
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-08-27)
Article
Accés obertThe 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, ... -
Comparison of model order reduction techniques for digital predistortion of power amplifiers
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés obertThis paper compares and discusses four techniques for model order reduction based on compressed sensing (CS), less relevant basis removal (LRBR), principal component analysis (PCA) and partial least squares (PLS). CS and ... -
Comprehensive nonlinear characterization and modeling of a BAW duplexer
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper performs a comprehensive nonlinear modeling of a Bulk Acoustic Wave (BAW) duplexer operating at the band 7 of the LTE wireless communication standard. The modeling starts by an accurate characterization of the ... -
Computationally efficient real-time digital predistortion architectures for envelope tracking power amplifiers
(2013-03-05)
Article
Accés obertThis paper presents and discusses two possible real-time digital predistortion (DPD) architectures suitable for envelope tracking (ET) power amplifiers (PAs) oriented at a final computationally efficient implementation ... -
Conditioning systems for acoustic communication transducers
(Universitat Politècnica de Catalunya, 2015-01-28)
Treball Final de Grau
Accés restringit per decisió de l'autorThe SARTI group investigator, Oriol Pallares is preparing his thesis called “Sincronización en redes de communicación acusticas submarinas”, where he will test charge and power amplifiers for acoustic communication in UPC ... -
Continuous-time adaptive control applied to rf amplifier linearization
(O.YUKSEL IEEE, 1994)
Text en actes de congrés
Accés obertA new approach to the RF power amplifier linearization problem is presented. The proposed solution applies non-linear theories (Lyapunov direct method) to adaptive filtering in order to improve the linearity of the RF ...