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Dissertations / Theses on the topic 'Electronic systems – Noise'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Chamon, Cláudio de Carvalho. "Electronic conduction and noise in strongly correlated systems." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38772.

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2

Tomlin, Toby-Daniel. "Analysis and modelling of jitter and phase noise in electronic systems : phase noise in RF amplifiers and jitter in timing recovery circuits." University of Western Australia. School of Electrical, Electronic and Computer Engineering, 2004. http://theses.library.uwa.edu.au/adt-WU2004.0021.

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Timing jitter and phase noise are important design considerations in most electronic systems, particularly communication systems. The desire for faster transmission speeds and higher levels of integration, combined with lower signal levels and denser circuit boards has placed greater emphasis on managing problems related to phase noise, timing jitter, and timing distribution. This thesis reports original work on phase noise modelling in electronic systems. A new model is proposed which predicts the up-conversion of baseband noise to the carrier frequency in RF amplifiers. The new model is vali

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3

Aghassi, Jasmin [Verfasser]. "Electronic transport and noise in quantum dot systems / J. Aghassi." Karlsruhe : Forschungszentrum Karlsruhe, 2007. http://d-nb.info/986920967/34.

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4

Burdi, Muhammad Khan. "Fault locator for distribution systems, utilising fault arc noise." Thesis, University of Bath, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387152.

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5

Gurrie, Thomas M. "The application of system modelling to digital electronic systems for active control of acoustic noise." Thesis, Royal Holloway, University of London, 1988. http://repository.royalholloway.ac.uk/items/57091fab-773a-4d31-b806-77ba916cb6f9/1/.

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Active noise control (ANC) is concerned with achieving some degree of cancellation between unwanted acoustic noise and the output from one or more actively controlled secondary sources. The minimum configuration for an A.N.C. system is a detecting microphone to detect the unwanted acoustic noise and a single loudspeaker to act as a secondary source. The basic problem is to specify the electronic system needed between the detecting microphone and the loudspeaker to achieve cancellation. The system has an inherent feedback pathbetween the loudspeaker and the detecting microphone that may cause i

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6

Aghassi, Jasmin. "Electronic Transport and Noise in Quantum Dot Systems Elektronischer Transport und Stromrauschen in Quantenpunktsystemen /." Karlsruhe : Forschungszentrum Karlsruhe, 2007. http://d-nb.info/986920967/34.

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7

Horst, Stephen J. "Frequency synthesis applications of SiGe BiCMOS processes." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42815.

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Silicon Germanium BiCMOS technology has been demonstrated as an ideal platform for highly integrated systems requiring both high performance analog and RF circuits as well as large-scale digital functionality. Frequency synthesizers are ideal candidates for this technology because the mixed-signal nature of modern frequency synthesis designs fundamentally requires both digital and analog signal processing. This research targets three areas to improve SiGe frequency synthesizers. A majority of this work focuses on applying SiGe frequency synthesizers to extreme environment applications such as

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8

Kamanzi, Janvier. "Development of a low energy cooling technology for a mobile satellite ground station." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1072.

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Thesis submitted in fulfillment of the requirements for the degree Master of Technology:Electrical Engineering in the Faculty ofEngineering at the Cape Peninsula University of Technology Supervisor:Prof MTE KAHN Bellville December 2013<br>The work presented in this thesis consists of the simulation of a cooling plant for a future mobile satellite ground station in order to minimize the effects of the thermal noise and to maintain comfort temperatures onboard the same station. Thermal problems encountered in mobile satellite ground stations are a source of poor quality signals and also of the p

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9

Wang, Liuqing. "Etude et développement de nouveaux matériaux et structures électroactifs pour la récupération d'énergie." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0083/document.

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La croissance formidable des dispositifs sans fils et autonomes (réseaux de capteurs, objets connectés…) voit actuellement son développement limité par les batteries qui présente une durée de vie limitée et ainsi soulève des problèmes de maintenance. Afin de palier à cette limitation, l’utilisation de l’énergie directement disponible dans l’environnement immédiat du dispositif, conduisant au concept de « récupération d’énergie », est une voie fortement explorée depuis une dizaine d’années. Ainsi, l’objectif de cette thèse a été de développer de nouvelles techniques et/ou d’utiliser de nouveaux

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10

Searle, Graham Ellis. "Dynamic modelling of electronic nose systems." Thesis, University of Warwick, 2002. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251118.

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11

Ham, Donhee Hajimiri Ali. "Statistical electronics : noise processes in integrated communication systems /." Diss., Pasadena, Calif. : California Institute of Technology, 2002. http://resolver.caltech.edu/CaltechETD:etd-03162005-141416.

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12

Yates, James W. T. "Black box and mechanistic modelling of electronic nose systems." Thesis, University of Warwick, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413428.

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13

Nimmagadda, Srinivas 1968. "Simultaneous switching noise and its impact on CMOS digital systems." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278252.

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Simultaneous switching noise was calculated for a number of CMOS drivers switching together. CMOS receiver noise immunity and the feed through of simultaneous switching noise from a D.C. "ON" driver were studied. The effects of skewing output driver switching on the simultaneous switching noise were explained. The performance trade-offs in using a damping resistor to minimize switching noise were analyzed. A distributed lumped equivalent model has been developed to model signal propagation over noisy reference planes, and thereby to accurately predict the overall noise levels in a system. The

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14

McCord, Cameron Forrest. "Electronic Sound Analysis with Hardware System and Remote Internet Display." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc103358/.

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Currently, standards from government agencies such as the National Institute for Occupation Safety and Health exist to aid in safeguarding individuals’ capacity for hearing, but only in factory settings in which large machines often produce loud levels of sound. Neglecting the fact that these preventative measures are only in place in the most limited of settings, no system currently exists to observe and report sound exposure levels in a manner timely or easily recognizable enough to adequately serve its purpose of hearing conservation. Musicians may also incur significant levels of risk for

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15

Kirton, Peter. "Fluctuations and noise in nanoelectrical and nanomechanical systems." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12853/.

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In this thesis we present a study of the fluctuations and noise which occur in a particular nanoelectrical device, the single electron transistor (SET). Electrical transport through the SET occurs through a combination of stochastic, incoherent tunnelling and coherent quantum oscillations, giving rise to a rich variety of transport processes. In the first section of the thesis, we look at the fluctuations in the electrical properties of a SET. We describe the SET as an open quantum system, and use this model to develop Born-Markov master equation descriptions of the dynamics close to three res

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16

Tashtoush, Nehad M. "SAW humidity sensor and an environmental electronic nose system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25915.pdf.

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17

Yoo, Seungyup. "Field effect transistor noise model analysis and low noise amplifier design for wireless data communications." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/13024.

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18

Zhang, Dan. "Impulse noise detection techniques for retransmission to reduce delay in DSL systems." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107853.

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To protect Digital Subscriber Line (DSL) systems against impulse noise (IN), interleaving combined with Reed-Solomon (RS) coding is typically deployed in the conventional DSL standards. However, interleaving introduces a long delay. To reduce such delay in conventional DSL systems that are corrupted by IN, retransmission can be used instead of interleaving. For an effective retransmission, reliable detection of corruption due to IN is required. In this thesis, we consider three detection approaches. The first one is based on the RS decoding status since the decoder either detects the number o

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19

Al-Masri, Mohammad Basel 1966. "Reducing coupling noise in VLSI packages using expert systems techniques." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278148.

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The level of coupling noise or cross talk is an important factor in the design of reliable VLSI packages. Coupling noise can be reduced by modifying the underlying conductor geometry. An expert system is developed and integrated into the packaging design and simulation environment UAPDSE. The system is provided with rules to reduce the coupling noise, and create models that satisfy the constraints set by the package designer. The parameter calculator UAMOM and the circuit simulator UANTL are used to evaluate the electrical performance of the model under study. The expert system is an interacti

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20

Rajashekharaiah, Mallesh. "Gain control and linearity improvement for low noise amplifiers in 5GHZ direct conversion receivers." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Spring2005/m%5Frajashekharaiah%5F050405.pdf.

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21

Cui, Li. "Conducting polymer-based QCM-interdigitated electrode hybrid electronic nose system." Thesis, University of Glasgow, 1999. http://theses.gla.ac.uk/3974/.

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This research project was concerned with the establishment and characterisation of a quartz crystal microbalance (QCM) - conductimetric interdigitated electrode hybrid "second generation" Electronic Nose system. Research objectives covered a number of technical limitations and analytical difficulties existed in the "first generation" Electronic Nose system. A wide variety of work was carried out, including the design and fabrication of the electronic nose system, the optimisation of sensors response, the device modelling, the studies of vapour-polymer interaction mechanisms and the application

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22

tariq, tariq. "GUI Application for measuring instrument. : Noise measurement system." Thesis, Uppsala universitet, Informationssystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208326.

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The always growing demands on the electronics design of modern electron microscopes cause increased requirements to the measurement tasks in the electronics development of these systems. In this thesis, we report the findings of designing noise measurements setup in Carl-Zeiss, Oberkochen. The aim of this thesis was to explore the design setup for noise measurement and to provide an interface which help us analyze these measurements using C# and agilent multimeter. This was achieved by the construction and evaluation of a prototype for a noise measurment application. For this purpose Design Sc

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23

Zhao, Yuxin. "Efficient erasure marking technique for delay reduction in DSL systems impaired by impulse noise." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110650.

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Digital Subscriber Line (DSL) technologies have experienced rapid development. Protecting the DSL systems against Impulse Noise (IN) is an important issue and it has recently received considerable attention. A combination of Reed–Solomon (RS) codes and interleaving is used to mitigate the destructive effects of IN. However, it is shown that the interleaving structure introduces long delay, which is certainly undesirable in high-rate transmission systems supporting interactive applications such as Internet Protocol Television (IPTV). Different techniques have therefore been proposed to reduce t

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24

Pathange, Lakshmi Prasad. "Non-Destructive Evaluation of Apple Maturity Using an Electronic Nose System." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/41235.

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The apple growers and packaging houses are interested in methods that can evaluate the quality of apples non-destructively. Harvested fruits are a mixture of immature, mature, and over mature fruits, thereby posing a great problem in deciding their end use and storage time. It is expected that the technique developed from the present project could be effectively used to classify the harvested fruit into immature, mature and over mature apples, rapidly and non-destructively. It would also help the growers to predict the optimum dates to harvest the fruits. York and Gala were the varieties of

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25

Martini, Guilherme Henrique Kaehler. "Filtro digital híbrido para sistemas embarcados de alta potência." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/593.

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Esta dissertação trata sobre o projeto, implementação e avaliação de um filtro híbrido para supressão de ruído em sistemas de alta potência. Seu desempenho será otimizado para reduzir a magnitude de ruídos impulsivos, que são comuns em dispositivos de alta potência, como inversores de frequência que controlam motores trifásicos. O filtro híbrido proposto é avaliado empiricamente em um inversor de frequência que é controlado por um sistema embarcado. A abordagem proposta é comparada com abordagens clássicas de filtragem digital como média móvel, filtro de resposta finita ao impulso (FIR) e filt

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26

Penrod, Logan B. "An Exploratory Study of Pulse Width and Delta Sigma Modulators." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2278.

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This paper explores the noise shaping and noise producing qualities of Delta-Sigma Modulators (DSM) and Pulse-Width Modulators (PWM). DSM has long been dominant in the Delta Sigma Analog-to-Digital Converter (DSADC) as a noise-shaped quantizer and time discretizer, while PWM, with a similar self oscillating structure, has seen use in Class D Power Amplifiers, performing a similar function. It has been shown that the PWM in Class D Amplifiers outperforms the DSM [1], but could this advantage be used in DSADC use-cases? LTSpice simulation and printed circuit board implementation and test are use

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27

Pang, Ho-Yuen. "Novel super-resolution algorithms and enhanced noise removal algorithm for image restoration systems and applications." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/279978.

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This dissertation is concerned with the introduction of a systematic way of modeling image processing. A dynamic imaging system model constructed from an information theory framework is proposed. Unlike an earlier simple model, the proposed dynamic imaging system (DIS) model is suitable for a wide range of applications. This DIS model is inspired by the Shannon communication theory. The Shannon communication theory is credited for the rapid development of the communication industry. Currently, most image processing researchers focus on developing fast algorithms and better hardware. An informa

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28

Figueiredo, Susana Afonso de Barros. "The use of an electronic nose for monitoring odours from waste composting systems." Thesis, University of Leeds, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400263.

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29

Van, Deventer David. "Discrimination of Retained Solvent Levels in Printed Food-Packaging Using Electronic Nose Systems." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/9741.

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The expanding role of electronic nose instrumentation, as a quality-monitoring tool for food-packaging materials, is examined and reviewed. The food industry is interested in determining the applicability of using an electronic nose for odor analysis of retained printing solvent levels in packaging. Three electronic nose systems were optimized for this application and their performance assessed. These include the FOX 3000, the Cyranose 320, and the QMB6. Response surface methodology was used to generate 2nd order models of sensor response as a function of system and experimental parameters f

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30

Nissfolk, Martin. "Development of an Electronic Nose-Tongue Data Acquisition System using a Microcontroller." Thesis, Uppsala University, Department of Information Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-103095.

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<p>An ad-hoc data acquisition system was constructed in order to control an array of different types of sensors and to collect their data. The system will be used as the core for electronic nose and tongue systems used for classifying and distinguishing different levels of contamination in water and other types of liquid. The system consists of analog and digital electronics as well as software for a microcontroller and a PC. The heart of the system is a PIC microcontroller that can communicate with the real world and with a PC. With the real world it is referred to analogue devices that measu

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31

Dutta, Ritaban. "A novel approach to analysing electronic nose data : object oriented expert system." Thesis, University of Warwick, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406818.

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32

Shin, Hyun Woo. "A hybrid electronic nose system for monitoring the quality of potable water." Thesis, University of Warwick, 1999. http://wrap.warwick.ac.uk/111031/.

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This PhD thesis reports on the potential application of an electronic nose to analysing the quality of potable water. The enrichment of water by toxic cyanobacteria is fast becoming a severe problem in the quality of water and a common source of environmental odour pollution. Thus, of particular interest is the classification and early warning of toxic cyanobacteria in water. This research reports upon the first attempt to identify electronically cyanobacteria in water. The measurement system comprises a Cellfacts instrument and a Warwick e-nose specially constructed for the testing of the cya

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33

Miller, Michael E. "Effects of field of view, MTF shape, and noise upon the perception of image quality and motion." Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-10022007-145303/.

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34

Marusiak, David. "MOS CURRENT MODE LOGIC (MCML) ANALYSIS FOR QUIET DIGITAL CIRCUITRY AND CREATION OF A STANDARD CELL LIBRARY FOR REDUCING THE DEVELOPMENT TIME OF MIXED-SIGNAL CHIPS." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1363.

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Many modern digital systems use forms of CMOS logical implementation due to the straight forward design nature of CMOS logic and minimal device area since CMOS uses fewer transistors than other logic families. To achieve high-performance requirements in mixed-signal chip development and quiet, noiseless circuitry, this thesis provides an alternative toCMOSin the form of MOS Current Mode Logic (MCML). MCML dissipates constant current and does not produce noise during value changing in a circuit CMOS circuits do. CMOS logical networks switch during clock ticks and with every device switching, no

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35

Simard, Frédéric. "The analysis and simulation of a generalized hybrid ARQ system for a burst-noise channel /." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59439.

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As digital systems become widespread, the importance of error control in these systems increases. Further, since most channels cannot be realistically modelled by a simple Binary Symmetric Channel, it is required to reliably estimate the performance of error control schemes on real channels. This thesis considers the analysis and simulation of a Generalised Hybrid ARQ Type II (GH-ARQ II) error control scheme on a channel modelled by the Gilbert-Elliott model. The analysis is easily extended to higher order systems and channels modelled by first-order Markov chains. The results indicate that th

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36

Chen, Hung Tat. "A portable electronic nose micro-system based on bio-inspired log-spike processing /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?ECED%202009%20CHEN.

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37

Franklin, Daniel Robert. "Enhancements to channel models, DMT modulation and coding for channels subject to impulsive noise." School of Electrical, Computer & Telecommunications Engineering - Faculty of Informatics, 2007. http://ro.uow.edu.au/theses/18.

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DMT modulation is an OFDM-based modulation scheme used in ADSL and proposed for various other high-speed broadband access systems. Existing mathematical models for transmission lines make a number of simplistic assumptions about the distribution of noise, in particular, the assumption that impulsive noise originates at either end of the transmission line. It is therefore desirable to improve the accuracy of the transmission-line model to allow better prediction of broadband modem performance, and to further improve the bit-allocation algorithms and equaliser designs used in DMT-based modems. T

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38

Lundgren, Jan. "Behavioral Level Simulation Methods for Early Noise Coupling Quantification in Mixed-Signal Systems." Licentiate thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-3434.

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In this thesis, noise coupling simulation is introduced into the behavioral level. Methods and models for simulating on-chip noise coupling at a behavioral level in a design flow are presented and verified for accuracy and validity. Today, designs of electronic systems are becoming denser and more and more mixed-signal systems such as System-on-Chip (SoC) are being devised. This raises problems when the electronics components start to interfere with each other. Often, digital components disturb analog components, introducing noise into the system causing degradation of the performance or even

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39

Perez, Felix, and Javier Ferrer. "DEVELOPMENT OF AN EMI MEASUREMENT SYSTEM : Performance Analysis of Bluetooth communication under noise environment." Thesis, University of Gävle, Department of Technology and Built Environment, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-721.

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<p>This thesis is a project carried out at the “Centre for RF Measurements Technology of Gävle”. The first aim of this work was basically to develop an EMI measurement system, to that purpose, it has been used an EMI Tester receiver, Spectrum Analyzer and a broadband antenna. Tables and graphics are shown to provide the values of the different detectors utilized.</p><p>Using this measurement system, an interference file was recorded and then inserted in a Bluetooth communication model. The interference file was simulated with Matlab Simulink, to check how the interference affected the communic

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40

Typpö, Jukka. "Noise tolerant voltage-controlled LC oscillator circuits for deep submicron VLSI system-on-a-chip radio circuits." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-121.

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<p>This thesis studies the problems with maintaining the spectral purity of fully integrated VCO circuits for radio frequency synthesizers in single-chip system designs. LC tank circuit oscillator circuits are shown to convert amplitude variation in the tank circuit voltage into frequency modulation, if voltage dependent capacitances are present in the tank circuit. Since the parasitic capacitances of the gain transistors and the capacitance of the varactor device in a VCO circuit are voltage dependent, any interfering signal, that is able to modulate the amplitude of the VCO tank circuit volt

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41

Aqeeli, Mohammed Ali M. "Microwave oscillator with phase noise reduction using nanoscale technology for wireless systems." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/microwave-oscillator-with-phase-noise-reduction-using-nanoscale-technology-for-wireless-systems(46287d2a-bc90-4cee-b893-ccf6a3b0747f).html.

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This thesis introduces, for the first time, a novel 4-bit, metal-oxide-metal (MOM) digital capacitor switching array (MOMDCSA) which has been implemented into a wideband CMOS voltage controlled oscillator (VCO) for 5 GHz WiMAX/WLAN applications. The proposed MOMDCSA is added both in series and parallel to nMOS varactors. For further gain linearity, a wider tuning range and minor phase noise variations, this varactor bank is connected in parallel to four nMOS varactor pairs, each of which is biased at a different voltage. Thus, VCO tuning gain reduces and optimal phase noise variation is obtain

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42

Devarajan, Yamuna Swetha. "Discriminating the Effects of Vineyard Management Practices on Grape and Wine Volatiles from Cabernet Franc and Merlot Grape Varieties Using Electronic Nose Systems." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/34688.

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Vineyard management practices are known to affect fruit composition and resultant wines, in part, by altering fruit volatiles. Methods currently used to evaluate the impact of vineyard practices on grape/wine composition include measuring physico-chemistry indices and performing wine sensory analyses. These activities are both time-consuming and destructive. Two electronic nose (ENose) systems: a hand-held conducting polymer-based and a portable surface acoustic wave-based systems were investigated as grape monitoring tools. Vineyard treatments included the effect of canopy side (East vs. West

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43

Solé, Carbonell Marta. "Statocyst sensory epithelia ultrastructural analysis of Cephalopods exposed to noise." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/84184.

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Controlled Exposure Experiments revealed lesions in the statocysts of four cephalopod species of the Mediterranean Sea (Sepia officinalis, Loligo vulgaris, Illex coindetii and Octopus vulgaris), when exposed to relatively low intensity low frequency sounds. The analysis was performed through: scanning (SEM) and transmission (TEM) electron microscopy techniques of the whole inner structure of the cephalopod statocysts, especially on macula and crista; SEM of the epidermal lines of cephalopod hatchlings; and proteomic studies (2DE/MALDI –MS) of the statocyst’s endolymph. All exposed adult

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44

Mousa, Pasandi Mohammad. "Adaptive decision-directed channel equalization and laser phase noise induced inter-carrier-inteference mitigation for coherent optical orthogonal frequency division multiplexing transport systems." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114464.

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The explosive growth of global Internet traffic has placed tremendous strain on both op-tical networks and optical transmission systems, underscoring the need for not only high-capacity transmission links but also for flexible, reconfigurable, and adaptive networks. Re-cent progress in complementary metal–oxide–semiconductor (CMOS) technology has fa-cilitated the use of digital signal processing (DSP) in optical communication systems. Blessed with the revival of coherent optical transmission systems, over the past few years, DSP-enabled, software-defined optical transmission (SDOT) systems hav

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45

Guo, Bin. "A bio-inspired electronic nose micro-system based on integrated gas sensor array and log-spike processing /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?ECED%202008%20GUO.

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46

Abbati, Luca. "Development of a Bi-Directional Electronics Platform for Advanced Neural Applications." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4271.

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This work presents a high-voltage, high-precision bi-directional multi-channel system capable of stimulating neural activity through bi-phasic pulses of amplitude up to ∓50 V while recording very low-voltage responses as low as tens of microvolts. Most of the systems reported from the scientific community possess at least one of the following common limitations: low stimulation voltages, low gain capabilities, or insufficient bandwidth to acquire a wide range of different neural activities. While systems can be found that present remarkable capabilities in one or more specific areas, a versati

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47

Thrivikraman, Tushar. "Analysis and Design of Low-Noise Amplifiers in Silicon-Germanium Hetrojunction Bipolar Technology for Radar and Communication Systems." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19755.

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This thesis presents an overview of the simulation, design, and measurement of state-of-the-art Silicon-Germanium Hetro-Junction Bipolar Transistor (SiGe HBT) low-noise amplifiers (LNAs). The LNA design trade-off space is presented and methods for achieving an optimized design are discussed. In Chapter 1, we review the importance of LNAs and the benefits of SiGe HBT technology in high frequency amplifier design. Chapter 2 introduces LNA design and basic noise theory. A graphical LNA design approach is presented to aid in understanding of the high-frequency LNA design process. Chapter 3

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Charlamov, Jevgenij. "Time domain optical reflectometer systems investigation." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20140227_140438-77567.

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The dissertation investigates the optical time domain reflectometer (OTDR) systems. The main object of research is an optical receiver for OTDR. The aim of the work is to create an optical receiver design method-ology to achieve optimal dynamic range of the system for a given band-width, design and investigate integrated fully differential variable gain tran-simpedance amplifier for OTDR optical receiver. Main tasks solved in this work are: perform analysis of OTDR struc-tures, main specifications and suggest possible improvement approaches; analyze main optical receiver noise sources and nois

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Gardner, Denise M. "Characterization of Cold Soak on Vitis vinifera L. cv. Cabernet Sauvignon Grape and Wine Volatiles Using an Electronic Nose System." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/32708.

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The use of the electronic nose in the wine industry is an emerging technology. Although electronic nose systems have been used in other industries as tools to monitor fruit maturity or quality control, the use of these systems for wine analysis has been debated. Many electronic nose sensor types exist, but have often been accused of primarily discriminating varying ethanol concentrations of wines as opposed to aroma and flavor volatiles. This study evaluated the use of a commercial conducting polymer electronic nose to evaluate wines while minimizing ethanol interference. The first study

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Xiong, Zhijie. "Radio Frequency Low Noise and High Q Integrated Filters in Digital CMOS Processes." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5043.

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Radio Frequency Low Noise and High Q Integrated Filters in Digital CMOS Processes Zhijie Xiong 149 pages Directed by Dr. Phillip E. Allen Presented in this work is a novel design technique for CMOS integration of RF high Q integrated filters using positive feedback and current mode approach. Two circuits are designed in this work: a 100MHz low-noise and high Q bandpass filter suited for an FM radio front-end, and a 2.4GHz low-noise and high-Q bandpass filter suited for a Bluetooth front-end. Current-mode approach and positive feedback design techniques are successfully used in the design o

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