Browsing by Subject "Impedància (Electricitat)"
Now showing items 1-20 of 150
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A 36 µW 1.1 mm2 reconfigurable analog front-end for cardiovascular and respiratory signals recording
(2018-04-06)
Article
Open AccessThis paper presents a 1.2 V 36 µW reconfigurable analog front-end (R-AFE) as a general-purpose low-cost IC for multiple-mode biomedical signals acquisition. The R-AFE efficiently reuses a reconfigurable preamplifier, a ... -
A communication-based algorithm to avoid the human body effect on antennas
(Universitat Politècnica de Catalunya, 2011-07-21)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Qing hua da xueEnglish: The aim of this project is to design and implement a simple and reliable system able to minimize the negative effect that users cause on the antenna performance of mobile devices when interacting with these. The ... -
A fast method to estimate body capacitance to ground
(2012)
Conference report
Open Access -
A Feasibility Study of the Suitability of an AD5933-based Spectrometer for EBI Applications
(Universitat Politècnica de Catalunya, 2009)
Master thesis (pre-Bologna period)
Open AccessElectrical Bioimpedance (EBI) measurements have proven their validity in several medical applications like body composition analysis and detection of melanoma among others. The successful application of EBI technology on ... -
A Method for the Determination of a Distributed FET Noise-Model Based on Matched-Source Noise-Figure Measurements
(JOHN WILEY & SONS INC, 2004-05-31)
Article
Open AccessA new method for the determination of a distributed FET noise model is presented. It is based on the extraction of the intrinsic noise-correlation matrix of an elemental section of the device from the device's noise figure, ... -
Accuracy considerations in microstrip surface impedance measurements
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1997-06-30)
Article
Open AccessAn approach is proposed for the design, measurement and data extraction of superconducting microstrip resonators used in determination of surface resistance and penetration depth. Major sources of error are analyzed and ... -
AD5933-based system for transthoracic impedance measurements
(Universitat Politècnica de Catalunya / University of Borås, 2012-08-31)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Blekinge Institute of Technology / Högskolan i Borås[ANGLÈS] Electrical Bioimpedance (EBI) through transthoracic measurements offers a non-invasive manner to measure hemodynamic values. In the last decades, advances in the field of electrodes, electronic hardware and the ... -
Adaptación de impedancias mediante redes selectivas
(1974-06)
Article
Open Access -
Adaptive energy management front-ends for variable-distance assymetric wireless power transfer links
(Universitat Politècnica de Catalunya, 2014-07-22)
Bachelor thesis
Open Access[ANGLÈS] Resonant Inductive Coupling Wireless Power Transfer (RIC-WPT) is a leading field of research due to the growing number of applications that can benefit from this technology: from biomedical implants to consumer ... -
Alternative conducted emission measurements on mains without LISNs
(2015-12-01)
Article
Open AccessConducted emission tests are always performed by the use of LISNs in laboratories in accordance with CISPR22, CISPR11 and other similar standards. However, it is not always possible to use LISNs because of some limitations. ... -
Analysis of signal processing techniques for high impedance fault detection in distribution systems
(Institute of Electrical and Electronics Engineers (IEEE), 2021-12)
Article
Restricted access - publisher's policy -
Analysis of time delay between bioimpedance and respiratory volume signals under inspiratory loaded breathing
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
Open AccessBioimpedance is known for its linear relation with volume during normal breathing. For that reason, bioimpedance can be used as a noninvasive and comfortable technique for measuring respiration. The goal of this study is ... -
Analysis of time delay between bioimpedance and respiratory volume signals under inspiratory loaded breathing
(Institute of Electrical and Electronics Engineers (IEEE), 2019-10-07)
Article
Open AccessBioimpedance is known for its linear relation with volume during normal breathing. For that reason, bioimpedance can be used as a noninvasive and comfortable technique for measuring respiration. The goal of this study is ... -
Análisis de la estabilidad de sistemas fotovoltaicos conectados a red mediante la respuesta frecuencial de la impedancia
(2011)
Conference report
Open AccessEl incremento de la generación de energía distribuida en la red eléctrica ha despertado inquietudes respecto a la estabilidad de la misma. Los generadores fotovoltaicos conectados a la red eléctrica tienen que lidiar con ... -
Application for control, visualization and analysis of Fast-EIS measurements for medical applications
(Universitat Politècnica de Catalunya, 2024-07-09)
Bachelor thesis
Open AccessThis project involves developing an application to control a Fast Electrical Impedance Spectroscopy system, optimizing the high-speed capture, processing, and real-time visualization of impedance data from cardiac and ... -
Architecture and design of an inductive contactless energy transfer system with two mobile loads for residential applications
(2015)
Conference lecture
Restricted access - publisher's policyInductive contactless energy transfer systems with multiple mobile loads are very complex systems. Main challenges of these systems are to propose a suitable architecture and to design their power components. These ... -
Assessment and follow-up of muscle injuries by segmental byoimpedance.
(2011)
Conference report
Open Access -
Assessment and follow-up of muscle injuries in athletes by bioimpedance: Preliminary results
(IEEE, 2011)
Book
Restricted access - publisher's policyMono-frequency (50 kHz) whole-body and segmental bioimpedance is measured before sport training in 14 high performance athletes. The athletes are classified in two groups according to the team sport: ... -
Basics of broadband impedance spectroscopy measurements using periodic excitations
(2012-08-21)
Article
Restricted access - publisher's policyMeasuring the impedance frequency response of systems by means of frequency sweep electrical impedance spectroscopy (EIS) takes time. An alternative based on broadband signals enables the user to acquire simultaneous ... -
Batch Processing of Electrical Bioimpedance Spectroscopy Measurements. Implementation and Validation
(Universitat Politècnica de Catalunya, 2010-05-26)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Högskolan i BoråsNowadays, Electrical Bioimpedance (EBI) measurements have become a common practice as they are useful for different clinical applications for non-invasive monitoring. In recent years new applications of EBI measurements ...
