Listar por autor UPNA "López Martín, Antonio"
Mostrando ítems 21-40 de 47
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Folded Cascode OTA with 5540 MHzpF/mA FoM
Garde Luque, María Pilar
; López Martín, Antonio ; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (IEEE, 2018)
Contribución a congreso / Biltzarrerako ekarpena 
A micropower single-stage folded cascode amplifier able to drive a wide range of capacitive loads is presented. It features class AB operation and includes power-efficient adaptive biasing techniques, which provide enhanced ... -
Gain-boosted super class AB OTAs based on nested local feedback
Beloso Legarra, Javier ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio ; Ramírez-Angulo, Jaime (IEEE, 2021)
Artículo / Artikulua
A new approach to design super class AB operational transcon-ductance amplifiers (OTAs) with enhanced large-signal and small-signal performance is presented. It is based on employing two nested positive and negative feedback ... -
A highly efficient composite class-AB–AB Miller op-amp with high gain and stable from 15 pF up to very large capacitive loads
Pourashraf, Shirin; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón (IEEE, 2018)
Artículo / Artikulua
In this paper, a highly power-efficient class-AB–AB Miller op-amp is discussed. The structure uses gm enhancement based on local common-mode feedback to provide class-AB operation with enhanced effective gm , open-loop ... -
Low power channel selection filtering for highly integrated wireless receivers
García Alberdi, Coro (2013)
Tesis doctoral / Doktoretza tesia
En este trabajo de investigación, se han propuesto y aplicado nuevas técnicas de baja tensión y bajo consumo en diseño analógico para implementar varios circuitos, principalmente filtros Gm-C. La tesis está estructurada ... -
Low-power class-AB CMOS voltage feedback current operational amplifier with tunable gain and bandwidth
Esparza Alfaro, Fermín; Pennisi, Salvatore; Palumbo, Gaetano; López Martín, Antonio (IEEE, 2014)
Artículo / Artikulua
A CMOS class AB variable gain Voltage Feedback Current Operational Amplifier (VFCOA) is presented. The implementation is based on class AB second generation current conveyors and exploits an electronically tunable ... -
Low-power ultrasonic front-end for cargo container monitoring
Algueta-Miguel, Jose M. ; García Oya, José Ramón; López Martín, Antonio ; Cruz Blas, Carlos Aristóteles de la ; Muñoz Chavero, Fernando; Hidalgo Fort, Eduardo (IEEE, 2019)
Artículo / Artikulua
A low-power ultrasonic communication system conceived for cargo container monitoring is presented. Two piezoelectric transducers operating at 40 kHz are used for generating and acquiring an ultrasonic signal through the ... -
Low-voltage 0.81mW, 1-32 CMOS VGA with 5% bandwidth variations and -38dB DC rejection
López Martín, Antonio ; Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; Rocha-Pérez, José Miguel; González Carvajal, Ramón (IEEE, 2020)
Artículo / Artikulua
A CMOS low-voltage amplifier with approximately constant bandwidth and DC rejection is introduced. The design is based on the cascade of a wide linear input range OTA, an op-amp and a servo-loop with extremely large time ... -
Micropower class AB low-pass analog filter based on the super-source follower
Martincorena Arraiza, Maite ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio ; Carlosena García, Alfonso (IEEE, 2022)
Artículo / Artikulua
An improved class AB version of the super source follower is used to implement a compact and power-efficient second order analog low-pass filter. The proposed circuit achieves a 41% power reduction as well as an improvement ... -
Monitoring of electric buses within an urban smart city environment
Astrain Escola, José Javier ; Falcone Lanas, Francisco Javier ; López Martín, Antonio ; Sanchis Gúrpide, Pablo ; Villadangos Alonso, Jesús (IEEE, 2021)
Contribución a congreso / Biltzarrerako ekarpena
A practical experience on monitoring the data generated by electric buses is presented, focusing on energy consumption, charge and state of the batteries. The work is carried out in the framework of a global smart city ... -
A novel PLL architecture
Osa, Juan I.; Carlosena García, Alfonso ; López Martín, Antonio (2000)
Contribución a congreso / Biltzarrerako ekarpena
A novel phase-locked loop scheme is proposed in this paper, whose main distinguishing features are infinite hold-in range, pull-out range fractionally constant and also a ripple fractionally constant. To this end, it ... -
On the optimal current followers for wide-swing current-efficient amplifiers
López Martín, Antonio ; Garde Luque, María Pilar ; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (IEEE, 2018)
Contribución a congreso / Biltzarrerako ekarpena
The design of various current followers for the implementation of OTAs with high slew rate and current efficiency is addressed. Two basic current follower topologies are compared, and modifications of both followers to ... -
Power efficient simple technique to convert a reset-and-hold into a true-sample-and-hold using an auxiliary output stage
Rico-Aniles, Héctor Daniel; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón; Rocha-Pérez, José Miguel; Garde Luque, María Pilar (IEEE, 2020)
Artículo / Artikulua
A technique to implement true-sample-and-hold circuits that hold the output for almost the entire clock cycle without resetting to zero is introduced, alleviating the slew rate requirement on the op-amp. It is based on a ... -
Power-efficient CMOS circuits for energy harvesting supplied IoT systems
Garde Luque, María Pilar (2019)
Tesis doctoral / Doktoretza tesia
En esta tesis se han aplicado técnicas de baja tensión y bajo consumo para implementar nuevos circuitos analógicos (principalmente amplificadores). Estos circuitos están orientados a dispositivos energéticamente autónomos ... -
Power-efficient current-mode analog circuits for highly integrated ultra low power wireless transceivers
Esparza Alfaro, Fermín (2014)
Tesis doctoral / Doktoretza tesia
In this thesis, current-mode low-voltage and low-power techniques have been applied to implement novel analog circuits for zero-IF receiver backend design, focusing on amplification, filtering and detection stages. The ... -
Power-efficient single-stage class-AB OTA based on non-linear nested current mirrors
Beloso Legarra, Javier ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio (IEEE, 2023)
Artículo / Artikulua
A novel approach to design low-power area-efficient rail-to-rail output single-stage class-AB operational transconductance amplifiers (OTAs) with enhanced large- and small-signal performance to drive large capacitive ... -
Pseudo-three-stage Miller op-amp with enhanced small-signal and large-signal performance
Paul, Anindita; Ramírez-Angulo, Jaime; López Martín, Antonio ; González Carvajal, Ramón; Rocha-Pérez, José Miguel (IEEE, 2019)
Artículo / Artikulua
A simple technique to implement highly power efficient class AB-AB Miller op-amps is presented in this paper. It uses a composite input stage with resistive local common mode feedback that provides class AB operation to ... -
A review of techniques to enhance an amplifier's performance using resistive local common mode feedback
Ramírez-Angulo, Jaime; López Martín, Antonio ; Carvajal, Ramón G.; Torralba, Antonio; Huerta-Chua, Jesús (MDPI, 2023)
Artículo / Artikulua
A review of some of the most common applications of the resistive local common mode feedback technique to enhance amplifier’s performance is presented. It is shown that this simple technique offers essential improvement ... -
Sensing in coin discriminators
Carlosena García, Alfonso ; López Martín, Antonio ; Arizti, Fernando; Martínez de Guereñu, Ane; Pina Insausti, José L.; García Sayés, Miguel (IEEE, 2007)
Contribución a congreso / Biltzarrerako ekarpena
This paper describes the technologies used in coin discriminator devices, stressing the improvements and novel mechanisms introduced by the authors in the past few years as a result of the cooperation with one leading ... -
Single-stage class-AB non-linear current mirror OTA
Beloso Legarra, Javier ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio (IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena
The analysis, design and experimental characterization of a single-stage class-AB operational transconductance amplifier (OTA) with enhanced large- and small-signal performance is presented. The OTA is biased in weak ... -
Smart charging station with photovoltaic and energy storage for supplying electric buses
Berrueta Irigoyen, Alberto ; Astrain Escola, José Javier ; Puy Pérez de la Borda, Guillermo; El Hamzaoui, Ismail; Ursúa Rubio, Alfredo ; Sanchis Gúrpide, Pablo ; Villadangos Alonso, Jesús ; Falcone Lanas, Francisco Javier ; López Martín, Antonio ; Matías Maestro, Ignacio (IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena
A Smart Charging Station (SCS) has been installed in the Public University of Navarre, Spain, in the framework of the H2020 Smart City Lighthouse STARDUST project. The SCS consists of a high-power electric bus charging ...
