Listar por autor UPNA "Cruz Blas, Carlos Aristóteles de la"
Mostrando ítems 1-20 de 21
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0.6-V 1.65-uW second-order Gm-C bandpass filter for multi-frequency bioimpedance analysis based on a bootstrapped bulk-driven voltage buffer
Carrillo, Juan M.; Cruz Blas, Carlos Aristóteles de la
(MDPI, 2022)
Artículo / Artikulua 
A bootstrapping technique used to increase the intrinsic voltage gain of a bulk-driven MOS transistor is described in this paper. The proposed circuit incorporates a capacitor and a cutoff transistor to be connected to ... -
A 1.2-V current-mode RMS-to-DC converter based on a novel two-quadrant electronically simulated MOS translinear loop
Martincorena Arraiza, Maite ; Cruz Blas, Carlos Aristóteles de la ; Algueta-Miguel, Jose M. ; López Martín, Antonio (IEEE, 2020)
Artículo / Artikulua
A novel current-mode CMOS RMS-to-DC converter using translinear techniques is introduced. It is based on a squarer/divider cell that is implemented using an electronically simulated loop with a novel biasing scheme that ... -
AC amplifiers with ultra-low corner frequency by using bootstrapping
Martincorena Arraiza, Maite ; Carlosena García, Alfonso ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio (Institution of Engineering and Technology, 2021)
Artículo / Artikulua
A novel architecture for an AC (i.e. high-pass) amplifier is proposed allowing a drastic reduction of the cutoff frequency to the sub-Hertz range. It builds upon the classic AC configuration with a high gain amplifier and ... -
AC coupled amplifier with a resistance multiplier technique for ultra-low frequency operation
Martincorena Arraiza, Maite ; Cruz Blas, Carlos Aristóteles de la ; Carlosena García, Alfonso ; López Martín, Antonio (Elsevier, 2022)
Artículo / Artikulua
This paper proposes a novel, tunable AC coupled capacitive feedback amplifier, exhibiting an ultra-low high pass corner frequency. This is accomplished by actively boosting the output resistive value of a MOS transistor ... -
Bulk-driven CMOS linear transconductance-cell for AC amplifiers with very low cut-off frequency
Ocampo-Hidalgo, Juan J.; Domínguez, Miguel Á.; Cruz Blas, Carlos Aristóteles de la ; Carrillo, Juan M. (Elsevier, 2023)
Artículo / Artikulua
This manuscript proposes a novel linearized transconductor for AC amplifiers with a very low cut-off frequency. The cell uses an alternative solution that is based on a modified source-degeneration OTA, using two bulkdriven ... -
CMOS low-voltage indirect current feedback instrumentation amplifiers with improved performance
Carrillo, Juan M.; Domínguez, Miguel Á.; Pérez Aloe, Raquel; Duque Carrillo, J. Francisco; Cruz Blas, Carlos Aristóteles de la (IEEE, 2020)
Contribución a congreso / Biltzarrerako ekarpena
Indirect current feedback (ICF) is a very common operation principle used in the design of CMOS instrumentation amplifiers (IA). The input and output transconductors required in an ICF IA usually consist on resistive-degenerated ... -
Design of low-cost smart accelerometers
Carlosena García, Alfonso ; López Martín, Antonio ; Massarotto, Marco ; Cruz Blas, Carlos Aristóteles de la ; Lecumberri Villamediana, Pablo ; Gómez Fernández, Marisol ; Pintor Borobia, Jesús María ; Gárriz Sanz, Sergio (Universitat Politècnica de Catalunya, 2005)
Contribución a congreso / Biltzarrerako ekarpena
The goal of this project is to design a low-cost smart accelerometer, making use of a piezoelectric element as basic sensing material, and adding a mixed-mode conditioning circuit. -
Enhanced single-stage folded cascode OTA suitable for large capacitive loads
López Martín, Antonio ; Garde Luque, María Pilar ; Algueta-Miguel, Jose M. ; Cruz Blas, Carlos Aristóteles de la ; Carvajal, Ramón G.; Ramírez-Angulo, Jaime (IEEE, 2018)
Artículo / Artikulua
An enhanced single-stage folded cascode operational transconductance amplifier able to drive large capacitive loads is presented. Circuits that adaptively bias the input differential pair and the current folding stage ... -
A family of alternating current amplifiers for ultra-low frequency operation
Martincorena Arraiza, Maite ; Carlosena García, Alfonso ; Cruz Blas, Carlos Aristóteles de la ; Beloso Legarra, Javier ; López Martín, Antonio (Wiley, 2021)
Artículo / Artikulua
A family of capacitively coupled alternating current (AC) amplifiers featuring ultra-low (below 1 Hz) corner frequency is presented. This is achieved by using high-gain devices which actively boost feedback resistance and ... -
Fault detection of planetary gears based on signal space constellations
Martincorena Arraiza, Maite ; Cruz Blas, Carlos Aristóteles de la ; López Martín, Antonio ; Molina Vicuña, Cristian; Matías Maestro, Ignacio (MDPI, 2022)
Artículo / Artikulua
A new method to process the vibration signal acquired by an accelerometer placed in a planetary gearbox housing is proposed, which is useful to detect potential faults. The method is based on the phenomenological model and ... -
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 ... -
High-linearity tunable low-Gm transconductor based on bootstrapping
Cinco Izquierdo, O. J.; Cruz Blas, Carlos Aristóteles de la ; Sanz Pascual, M. T. (IEEE, 2021)
Artículo / Artikulua
In this brief, a novel pseudo-differential low-transconductance amplifier is proposed based on the bootstrapping technique. The transconductor is implemented using two voltage follower topologies as amplifiers with their ... -
Low power CMOS chopper preamplifier based on source-degeneration transconductors
Cinco Izquierdo, O. J.; Sanz Pascual, M. T.; Cruz Blas, Carlos Aristóteles de la ; Calvo López, B. (IEEE, 2020)
Contribución a congreso / Biltzarrerako ekarpena
This paper describes the design of a low-power, low-noise flicker CMOS chopper preamplifier for sensor signal conditioning. The core amplifier and the Gm-C output low pass filter of the proposed fully differential preamplifier ... -
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-power wide-bandwidth CMOS indirect current feedback instrumentation amplifier
Carrillo, Juan M.; Domínguez, Miguel Á.; Pérez Aloe, Raquel; Cruz Blas, Carlos Aristóteles de la ; Duque Carrillo, J. Francisco (Elsevier, 2020)
Artículo / Artikulua
The analysis and design trade-offs of a simple and economical technique to implement wideband low-voltage CMOS instrumentation amplifiers (IAs) based on indirect current feedback (ICF), are described. The input and an ... -
Low-voltage CMOS bulk-driven buffer with bootstrapping technique for gain enhancement and THD-noise reduction
Cruz Blas, Carlos Aristóteles de la ; Carrillo, Juan M. (IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, a bootstrapping technique is applied to a bulk-driven voltage buffer for canceling the gate-source transconductance in order to improve the cell gain, the linearity and reduce the input-referred noise. The ... -
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 ... -
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 ... -
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 ... -
Very-low frequency capacitively coupled AC amplifier with a current feedback operational amplifier
Beloso Legarra, Javier ; Cruz Blas, Carlos Aristóteles de la ; Carlosena García, Alfonso ; Martincorena Arraiza, Maite (Wiley, 2023)
Artículo / Artikulua
In this paper, we propose the idea of using transimpedance amplifiers, in lieu of operational amplifiers (OAs) or transconductance amplifiers (OTAs) to design capacitively coupled AC amplifiers. The idea is demonstrated ...
