Дисертації з теми "Module of signal generation"
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SAMPATH, HEMANTH KUMAR. "A MODULE GENERATION ENVIRONMENT FOR MIXED-SIGNAL CIRCUITS." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1052321882.
Повний текст джерелаKANKIPATI, SUNDER RAJAN. "MACRO MODEL GENERATION FOR SYNTHESIS OF ANALOG AND MIXED SIGNAL CIRCUITS." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1077297705.
Повний текст джерелаVon, Eden Elric Omar. "Optical arbitrary waveform generation using chromatic dispersion in silica fibers." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/24780.
Повний текст джерелаДудко, Андрій Володимирович. "Модуль генерації гідроакустичного сигналу в плоско-паралельному хвилеводі". Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/28408.
Повний текст джерелаThe purpose of the thesis is to create a program product for generating a hydroacoustic signal in a plane-parallel waveguide beam method. The objects of research are the methods and algorithms of signal simulation. An overview of the existing software applications for simulation of signals and the problems of modeling of hydroacoustic signals was performed, the program software of generation hydroacoustic signals, implemented by the imaginary sources for calculating the field of pressure in a plane-parallel waveguide, was implemented, this method belongs to beam models. The created program product can be used as part of the system for modeling hydroacoustic objects and for scientific research. Total volume of work: 67 pages, 19 illustrations, 17 bibliographic references and 3 attachments.
Целью дипломной работы является создание программного продукта для генерации гидроакустических сигналов в плоско-параллельном волноводе лучевым методом. Объектом исследования являются способы и алгоритмы моделирования сигналов. Было выполнено обзор существующих программных приложений для моделирования сигналов и ознакомиться с проблемами моделирования гидроакустических сигналов, разработано программный продукт для генерации гидроакустических сигналов, который реализован методом мнимых источников для расчета поля давления в плоско-параллельном волноводе, данный метод относится к лучевым моделям. Созданная программа может быть использована как часть системы для моделирования гидроакустических объектов и для научных исследований.
Holland, Rainer. "The Rotor-Signal-Module of MFI90." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614642.
Повний текст джерелаThis paper presents special measuring equipment designed for acquiring rotor data from a BO105 helicopter. Some aspects of hardware design, especially in the field of digital data acquisition and processing will be discussed. On this occasion the limited space available on the rotor hub must be taken into consideration. The rotor-signal-module also has to function in the future measurement system MF190. The paper concludes with the presentation of a method of calibrating the measurement values from the rotor blades. In this connection measured rotor data will be compared with results obtained by a nonlinear helicopter computer simulation. This represents one possibility to check the data quality.
Azizi, Farouk. "Microfluidic Chemical Signal Generation." Cleveland, Ohio : Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1244664596.
Повний текст джерелаTitle from PDF (viewed on 2009-11-23) Department of Electrical Engineering Includes abstract Includes bibliographical references and appendices Available online via the OhioLINK ETD Center
Paul, Suresh L. "Curvilinear traverse generation module for and AGV." Cincinnati, Ohio : University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1060885654.
Повний текст джерелаPaul, Suresh Lazarus. "Curvilinear Traverse Generation Module for an AGV." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1060885654.
Повний текст джерелаPenharlow, David. "Signal Conditioning, the Next Generation." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614701.
Повний текст джерелаThis paper describes the changes in signal conditioning techniques used on flight test programs in recent years. Improved sensors require improved signal conditioning. Advanced distributed data acquisition systems, used on major flight test programs, move the signal conditioning closer to the sensor for improved performance and reduced wiring throughout the vehicle. These distributed systems use digital communication between the master controller and the remote conditioning units for improved accuracy and noise immunity. This requires sample- and-hold amplifiers, analog-to-digital converters, and serial encoder/decoders to be located at the signal conditioning location. The changes in signal conditioning designs are driven by the sensors, the architecture of the data acquisition systems, and by vehicle designs (smaller aircraft, smaller missiles, composite structures, and hypervelocity vehicles). A look at the signal conditioning technology employed in many of these systems as well as what is anticipated in the future is described in this paper.
Nascimento, Leonaldo José Lyra do. "Controle térmico de alta exatidão e sua aplicação na determinação de propriedades térmicas de materiais." Universidade Federal da Paraíba, 2012. http://tede.biblioteca.ufpb.br:8080/handle/tede/5361.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
This paper presents a theoretical and experimental study of a PID control-Proportional, Integral and Derivative using PELTIER module that achieves precision of about 0.01oC. It is developed to study the integrated instrumentation and control heat transfer. Based on this we developed a heat signal generator on a flat surface and applied to the measurement of thermal properties, in a system similar to electrical circuit. After several experiments, the results indicates the validity of the proposal.
Neste trabalho apresenta-se um estudo teórico e experimental de um controle P.I.D.- Proporcional, Integral e Derivativo, utilizando módulos Peltier s que alcançam precisão de cerca de 0.01oC. É desenvolvido o estudo da instrumentação e controle integrado à transferência de calor. Baseado neste controle foi desenvolvido um gerador de sinais térmicos em uma superfície plana e aplicado na medida de propriedades térmicas, em um sistema semelhante ao circuito elétrico. Após vários ensaios experimentais usando amostras sólidas, os resultados indicam a validade da proposta.
Thakur, Ravi Bhushan. "Low power design implementation of a signal acquisition module." Thesis, Kansas State University, 2010. http://hdl.handle.net/2097/4617.
Повний текст джерелаDepartment of Electrical and Computer Engineering
Don M. Gruenbacher
As semiconductor technologies advance, the smallest feature sizes that can be fabricated get smaller. This has led to the development of high density FPGAs capable of supporting high clock speeds, which allows for the implementation of larger more complex designs on a single chip. Over the past decade the technology market has shifted toward mobile devices with low power consumption at or near the top of design considerations. By reducing power consumption in FPGAs we can achieve greater reliability, lower cooling cost, simpler power supply and delivery, and longer battery life. In this thesis, FPGA technology is discussed for the design and commercial implementation of low power systems as compared to ASICs or microprocessors, and a few techniques are suggested for lowering power consumption in FPGA designs. The objective of this research is to implement some of these approaches and attempt to design a low power signal acquisition module. Designing for low power consumption without compromising performance requires a power-efficient FPGA architecture and good design practices to leverage the architectural features. With various power conservation techniques suggested for every stage of the FPGA design flow, the following approach was used in the design process implementation: the switching activity is addressed in the design entry, and synthesis level and software tools are utilized to get an initial estimate of and optimize the design’s power consumption. Finally, the device choice is made based on its features that will enhance the optimization achieved in the previous stages; it is configured and real time board level power measurements are made to verify the implementation’s efficacy
Hawrysh, Evan M. (Evan Mark). "Digital architectures for analog signal generation." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24058.
Повний текст джерелаLee, Jeffrey C. "Design Considerations for a Variable sample Rate Signal Conditioning Module." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606212.
Повний текст джерелаModern telemetry systems require flexible sampling rates for analog signal conditioning within telemetry encoders in order to optimize mission formats for varying data acquisition needs and data rate constraints. Implementing a variable sample rate signal conditioning module for a telemetry encoder requires consideration of several possible architectural topologies that place different system requirements on data acquisition modules within the encoder in order to maintain adequate signal fidelity of sensor information. This paper focuses on the requirements, design considerations and tradeoffs associated with differing architectural topologies for implementing a variable sample rate signal conditioning module and the resulting implications on the encoder system's data acquisition units.
Baptist, Lauren M. (Lauren Marianne) 1977. "Genesis-II : A language generation module for conversational systems." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/81547.
Повний текст джерелаIncludes bibliographical references (p. 127-132).
by Lauren M. Baptist.
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
Lu, Albert K. (Albert Keishi). "Analog signal generation using delta-sigma modulation." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68040.
Повний текст джерелаPrototypes of the proposed designs have been assembled using Field-Programmable Gate Array, and BiCMOS technologies. The test results have successfully verified the validity of the proposed concepts indicating dynamic ranges exceeding 80 dB and 60 dB for the single and multi-tone generators respectively.
Barrera-Gonzalez, Claudia Patricia. "Testing platform for a low voltage differential signal gigabit communication module." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 53 p, 2007. http://proquest.umi.com/pqdweb?did=1342743431&sid=1&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаHaurie, Xavier. "Signal generation using high-order Delta-sigma modulation." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27224.
Повний текст джерелаAn essential building block of delta-sigma oscillators is a one-bit digital delta-sigma modulator with unity Signal-Transfer-Function. A complete, computer-aided design method, relying on a novel high-order modulator topology allowing the use of power-of-two coefficients, is formulated and justified. Although the resulting modulators are aimed specifically at usage in delta-sigma oscillators, they can find applications in oversampled D/A conversion in general as they require a minimal amount of digital hardware.
DSMOD is the computer-aided design tool which was developed to automate the design, simulation and prototyping processes. It implements a number of involved design algorithms, and allows for a quick comparison of theoretical, simulated and prototype behavior, with the use of a graphical user interface. It is written mostly for MATLAB and is thus highly portable and expandable.
The measurements performed on prototypes prove the soundness, flexibility and efficiency of DSMOD. They also prove that low hardware cost and high performance levels are attainable with the novel delta-sigma modulator and oscillator topologies presented here.
Odelius, Johan. "Generation of probe signal for feedback cancellation systems." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2095.
Повний текст джерелаA common problem of hearing aids is whistling caused by feedback from the loudspeaker back to the microphone. A method of reducing the negative effects, caused by the feedback, is called feedback cancellation. A variant of feedback cancellation uses a probe signal, which is applied to the speaker of the hearing aid and is used to continuously estimate the feedback. Oticon A/S has suggested a master's thesis with the purpose of designing and evaluating an algorithm generating a probe signal for feedback cancellation systems. The challenge was to find an inaudible probe signal with as much energy as possible.
Two approaches have been investigated for generating a probe signal. In the first approach the psychoacoustic principle of masking was used to estimate how much noise that could be added to a signal without being heard. Psychoacoustic models, including masking, are used in MPEG (Moving Pictures Expert Group) audio coding and one of these models has been examined in the thesis. In the second approach a standard LPC (Linear Prediction Coding) algorithm was used. In both the MPEG and the LPC approach, warped signal processing has been utilized improving the methods.
A listening test was performed, evaluating the methods generating the probe signal. The purpose of the test was to determine whether the noise, generated using the MPEG and LPC approach, was inaudible. A hearing aid system with feedback cancellation, using the probe signal, was also simulated. The listening test showed that the noise (probe signal) had to be lowered, much more than expected, to be inaudible. As a consequence, shown in the simulations, the feedback cancellation system, using the probe signal, had trouble identifying the feedback of the hearing aid.
Haurie, Xavier. "Signal generation using high-order delta-sigma modulation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29597.pdf.
Повний текст джерелаBednarski, Andrzej. "Integrated Optimal Code Generation for Digital Signal Processors." Doctoral thesis, Linköping : Department of Computer and Information Science, Linköpings universitet, 2006. http://www.bibl.liu.se/liupubl/disp/disp2006/tek1021s.pdf.
Повний текст джерелаAsokan, Anu. "Signal Integrity - Aware Pattern Generation for Delay Testing." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS206/document.
Повний текст джерелаAdvancing nanometer technology scaling enables higher integration on a single chip with minimal feature size. As a consequence, the effects of signal and power integrity issues such as crosstalk noise between interconnects, power supply noise and ground bounce in the supply networks significantly increases. Also, reliability issues are eventually introduced by variations in the manufacturing process. These issues will negatively impact the timing characteristics in an integrated circuit (IC), as they give rise to delay defects. Delay-related parametric failures increase the defect escape rate, yield loss and diminish reliability rate. Hence, design-for-test techniques are employed to have a better controllability and observability on the internal nodes to easily detect and locate the faults. However, they are not always detected by the traditional fault models. In our work, we target these challenges and propose novel physical design-aware path delay test methods to deal with delay faults coming from manufacturing defects or physical design issues. They include the investigation of path delay variations in the presence of crosstalk noise, power supply noise, ground bounce and process variations. Based on this, we develop technology independent test methods for identifying the test patterns that may cause a worst-case delay on a target path. Then, we develop a dedicated test pattern generation method for path delay testing in the presence of crosstalk noise, power supply noise and ground noise. The proposed methods can be used to characterize the path speed and it helps to address the speed binning problem. Also, they can be employed in improving the classical ATPG approach of pattern generation. The application of these contributions can bring tremendous improvements to the IC test quality by ensuring better defect coverage and for an increased manufacturing yield during speed binning of IC chips
Wang, Xiaoting. "Very High Efficiency Solar Cell (VHESC) sub-module measurement." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 55 p, 2008. http://proquest.umi.com/pqdweb?did=1654493881&sid=1&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Повний текст джерелаBowen, John Kipp. "Dynamic Module Library Generation for FPGA-based Run-Time Reconfigurable Systems." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/31088.
Повний текст джерелаMaster of Science
Ahmad, Shakeel. "Stimuli Generation Techniques for On-Chip Mixed-Signal Test." Doctoral thesis, Linköpings universitet, Elektroniska komponenter, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-61712.
Повний текст джерелаDufort, Benoit. "Analog signal generation using periodic sigma-delta modulated streams." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/NQ55325.pdf.
Повний текст джерелаLiao, Stan Yi-Huang 1972. "Code generation and optimization for embedded digital signal processors." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/11048.
Повний текст джерелаVita.
Includes bibliographical references (p. [203]-211).
by Stan Yi-Huang Liao.
Ph.D.
Yang, Xin. "Pulse-shaping assisted nonlinear optical signal generation in fibres." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/359906/.
Повний текст джерелаEhteshami, Nasrin. "Silicon Photonic Devices for Microwave Signal Generation and Processing." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34111.
Повний текст джерелаNavarro, Roy Daniel Alva. "Signals of new physics at the LHC and colliders of future generation." reponame:Repositório Institucional da UFABC, 2016.
Знайти повний текст джерелаTese (doutorado) - Universidade Federal do ABC, Programa de Pós-Graduação em Física, 2016.
Searches for new physics beyond the Standard Model are important subjects at the current Run-2 of the Large Hadron Collider (LHC) and next generation colliders. In this context, we make independent studies of the phenomenology of a new hypothetical heavy Majorana neutrino (N) and a heavy spin-1 charged vector (W¿) at the LHC and a future 100 TeV very large hadron collider (VLHC), we also study the potential of the future International Linear Collider (ILC) to measure the rare h ! Z Higgs decay. Toward this end, the N production via the W fusion process is investigated and found it to be larger than the Drell-Yan production for mN > 1 TeV at the 14 TeV LHC and for mN > 770 GeV at the 100 TeV VLHC. Then we computed the discovery potential of the these colliders to discover an N using the same-sign dimuon channel. In the case of the h ! Z Higgs decay we investigated the Higgsstrahlung production at the 250 GeV ILC, we found that a sensitivity of 58% can be reached in the inclusive ¿Ê¿Ê X channel with 3 ab.1, where X denotes the inclusive decay of the Z boson from the Higgs. Finally, in the case of the W¿, we studied its contribution to the h ! Higgs decay process and constrained the strength of the W¿W¿h interaction. Finally, we study the Drell-Yan W¿ production with its decay to the Wh pair at the LHC.
Johan, Berneland. "Design and Construction of Relay-Based RF-SignalSwitching Module for High Signal Integrity." Thesis, Linköpings universitet, Elektroniksystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-109694.
Повний текст джерелаEilermann, Martin [Verfasser]. "Generation of an Equipment Module Database Considering Industrial Process Tasks / Martin Eilermann." München : Verlag Dr. Hut, 2018. http://d-nb.info/1168534429/34.
Повний текст джерелаAKYOL, MUCAHIT. "DESIGN OF A SWITCH BLOCK MODULE FOR SECOND GENERATION MULTI-TECHNOLOGY FPGA." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1159558241.
Повний текст джерелаMessaoud, Safa. "Translating Discrete Time SIMULINK to SIGNAL." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/49299.
Повний текст джерелаMaster of Science
Chowdhury, Azhar. "A probabilistic test instrument using sigma-delta phase signal generation technique for mixed signal embedded test." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107696.
Повний текст джерелаUn instrument pour les tests "mixed-signal" basé sur une approche statistique est proposé. L'architecture du système ainsi que son implémentation sont présentés. L'instrument peut être utilisé afin d'injecter ou de capturer des informations en temps et voltage associé aux signaux de hautes fréquences dans les systèmes de communication. En utilisant une approche statistique, la distribution de probabilité associée à un signal peut être calculée à l'aide d'un circuit appelé « probability extraction unit » implémenté de façon digital. De plus, l'utilisation de ΣΔ pour encoder des signaux dans la phase afin de générer des signaux dans le temps ainsi que des références pour du « high speed sampling » est démontré. Les résultats expérimentaux démontrent que des variations de phase de 45 degrés avec des intervalles de1 degré est possible. Ceci permet donc plus de flexibilité pour générer des signaux de tests qui sont programmables. Un prototype de cette technique fut implémenté sur « PCB » afin de démontrer que la technique est fonctionnelle. Les résultats des tests furent également comparés à ceux obtenus avec des instruments de mesures traditionnels et démontrent une excellente corrélation entre la méthode développée et les méthodes existantes.
Nordio, Alessandro. "Advanced signal processing algorithms for 3rd generation wireless mobile systems /." [S.l.] : [s.n.], 2002. http://library.epfl.ch/theses/?nr=2550.
Повний текст джерелаRosati, Stefano <1982>. "Advanced signal and receiver design for next generation OFDM systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3828/.
Повний текст джерелаMagden, Emir Salih. "Optical signal generation, stabilization, and manipulation in broadband silicon photonics." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/115769.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 169-175).
Together with the increasing number of applications in vastly different parts of the electromagnetic spectrum, more versatile, stable, and capable light generation and manipulation techniques are required in integrated photonics. In this thesis, using CMOS fabrication capabilities, and a single layer back-end deposition process, CMOS-compatible lasers are developed using aluminum oxide as the host medium. First, a low temperature deposition process is detailed, and erbium-based lasers are demonstrated in the C-band. Then, thulium is studied and characterized as a dopant for applications at longer wavelengths. On-chip frequency stability issues are addressed by investigating the thermo-optic characteristics of various CMOS-compatible media. Negative thermo-optic coefficient of titanium dioxide is utilized to compensate for the all-positive thermal index shifts in the Si/SiN waveguide platform. An athermal resonator with resonances that exhibit ultra-low thermal shifts is created and used to stabilize a continuous-wave laser. Compared to a conventional SiN resonator, the athermal resonator is shown to significantly reduce the frequency noise of a locked laser. Switching to design-based solutions, the concept of spectrally-selective waveguides that can spatially confine the mode depending on the wavelength are demonstrated for the first time. The spectrally-selective waveguides are then used to design and demonstrate the first on-chip transmissive dichroic filter with the sharpest roll-offs to date. Finally, directional coupler based solutions are studied to address wavelength selectivity for octave-wide signals, and propose designs for ultra-wideband couplers.
by Emir Salih Magden.
Ph. D.
Muñoz-Arcos, Christian Daniel. "Optical Microwave Signal Generation for Data Transmission in Optical Networks." Thesis, Toulouse, ISAE, 2020. http://www.theses.fr/2020ESAE0013.
Повний текст джерелаThe massive growth of telecommunication services and the increasing global data traffic boostthe development, implementation, and integration of different networks for data transmission.An example of this development is the optical fiber networks, responsible today for theinter-continental connection through long-distance links and high transfer rates. The opticalnetworks, as well as the networks supported by other transmission media, use electricalsignals at specific frequencies for the synchronization of the network elements. The qualityof these signals is usually determined in terms of phase noise. Due to the major impact ofthe phase noise over the system performance, its value should be minimized.The research work presented in this document describes the design and implementation ofan optoelectronic system for the microwave signal generation using a vertical-cavity surfaceemittinglaser (VCSEL) and its integration into an optical data transmission system. Consideringthat the proposed system incorporates a directly modulated VCSEL, a theoreticaland experimental characterization was developed based on the laser rate equations, dynamicand static measurements, and an equivalent electrical model of the active region. This proceduremade possible the extraction of some VCSEL intrinsic parameters, as well as thevalidation and simulation of the VCSEL performance under specific modulation conditions.The VCSEL emits in C-band, this wavelength was selected because it is used in long-haullinks. The proposed system is a self-initiated oscillation system caused by internal noise sources,which includes a VCSEL modulated in large signal to generate optical pulses (gain switching).The optical pulses, and the optical frequency comb associated, generate in electricaldomain simultaneously a fundamental frequency (determined by a band-pass filter) and severalharmonics. The phase noise measured at 10 kHz from the carrier at 1.25 GHz was -127.8dBc/Hz, and it is the lowest value reported in the literature for this frequency and architecture.Both the jitter and optical pulse width were determined when different resonantcavities and polarization currents were employed. The lowest pulse duration was 85 ps andwas achieved when the fundamental frequency was 2.5 GHz. As for the optical frequencycomb, it was demonstrated that its flatness depends on the electrical modulation conditions.The flattest profiles are obtained when the fundamental frequency is higher than the VCSELrelaxation frequency. Both the electrical and the optical output of the system were integrated into an optical transmitter.The electrical signal provides the synchronization of the data generating equipment,whereas the optical pulses are employed as an optical carrier. Data transmissions at 155.52Mb/s, 622.08 Mb/s and 1.25 Gb/s were experimentally validated. It was demonstrated thatthe fundamental frequency and harmonics could be extracted from the optical data signaltransmitted by a band-pass filter. It was also experimentally proved that the pulsed returnto-zero (RZ) transmitter at 1.25 Gb/s, achieves bit error rates (BER) lower than 10−9 whenthe optical power at the receiver is higher than -33 dBm. la plus faible, 85 ps, a été obtenue lorsque la fréquence fondamentale du système était de 2,5 GHz. En ce qui concerne le peigne de fréquences optiques, il a été démontré que la formedu peigne dépend des conditions de modulation électrique et que les profils les plus platssont obtenus lorsque la fréquence fondamentale est supérieure à la fréquence de relaxationdu VCSEL. Les sorties électrique et optique du système ont été intégrées dans un émetteur optique. Lesignal électrique permet la synchronisation de l’équipement responsable de la génération desdonnées, tandis que les impulsions optiques sont utilisées comme porteuse optique. La transmissionde données à 155,52 Mb/s, 622,08 Mb/s et 1,25 Gb/s a été validée expérimentalement
Le, Harivel de Gonneville Patrick. "Etude de faisabilité d'un module de réception radar tout numérique." Dijon, 2002. http://www.theses.fr/2002DIJOS010.
Повний текст джерелаOzharar, Sarper. "STABLE OPTICAL FREQUENCY COMB GENERATION AND APPLICATIONS IN ARBITRARY WAVEFORM GENERATION, SIGNAL PROCESSING AND OPTICAL DATA M." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3516.
Повний текст джерелаPh.D.
Optics and Photonics
Optics and Photonics
Optics PhD
Ozharar, Sarper. "Stable optical frequency comb generation and applications in arbitrary waveform generation, signal processing and optical data mining." Orlando, Fla. : University of Central Florida, 2008. http://purl.fcla.edu/fcla/etd/CFE0002388.
Повний текст джерелаAmorosi, Davide. "Analog signal generation with Raspberry Pi boards for short-range communications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Знайти повний текст джерелаDeng, Zhichao. "Mode locked fiber lasers and their application in microwave signal generation." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26886.
Повний текст джерелаDumenil, Arnaud. "Polarization dependent loss in next-generation optical networks : challenges and solutions." Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAS006.
Повний текст джерелаLarge amounts of ever-increasing global data traffic require sound and reliable communication channels. Optical terrestrial networks and submarine links are at the very heart of the global telecom infrastructure, and carry hundreds of frequency channels modulated at very high rates. These links include not only kilometers of fiber but also optical elements such as Erbium-Doped Fiber-Amplifiers (EDFA) to amplify periodically the attenuated signals and Wavelength Selective Switches (WSS) to route the signals to their assigned destinations. In this thesis, we explore a specific rate-degrading impairment of the optical propagation that raises in those systems. Discrete optical elements often exhibit a polarization anisotropy that emerges as a gain or loss imbalance between the two polarization tributaries of the polarization-multiplexed optical signals. This non-unitary effect called Polarization Dependent Loss (PDL) impairs the quality of transmission in current and next-generation optical systems.In the context of polarization-multiplexed signals, we assess the capacity loss induced by PDL. First, channel models are carefully studied and two approaches are described: a channel with distributed PDL elements and distributed noise or a simplified single-element equivalent channel. Making use of these models, we then analyze their fundamental limits of communications. We show that the PDL channel capacity depends in practice on the state-of-polarization orientation of the incident signal. We then review the state-of-the art of PDL-mitigating modulation schemes and propose two new multi-dimensional signaling schemes that enhance worst-case and average performance. These two modulations are unitary transforms of M-QAM symbols and do not make use of additional degrees of freedom apart from the four already-used dimensions per wavelength (in-phase and quadrature channels of two polarization states). We briefly extend these first results to space-division-multiplexed optical communications impaired by mode dependent loss (MDL) that present a similar gain imbalance. Beyond signal shaping at the transmitter side, we study the performance loss of a conventional, sequential signal processing chain at the receiver side in presence of PDL, in comparison with a joint equalization-decoding scheme. The additional capacity loss due to the mismatch sequential processing is evaluated for several modulation formats and at different operating points. Finally, we report an experimental validation of the two proposed signaling schemes, both on a single PDL element and on a distributed PDL channel, demonstrating the predicted enhanced robustness to PDL
Kavak, Fatih. "A Sizing Algorithm for Non-Overlapping Clock Signal Generators." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2416.
Повний текст джерелаThe non-overlapping clock signal generator circuits are key elements in switched capacitor circuits since non-overlapping clock signals are generally required. Non-overlapping clock signals means signals running at the same frequency and there is a time between the pulses that none of them is high. This time (when both pulses are logic 0) takes place when the pulses are switching from logic 1 to logic 0 or from logic 0 to logic 1. In this thesis this type of clock signal generators are analyzed and designed for different requirements on the switched capacitor (S/C) circuits. Different analytical models for the delay in CMOS inverters are studied. The clock generators for digital circuits based on phase-locked loop and delay-locked loop are also studied. An algorithm, which can automatically size the non-overlapping clock generator circuits, was implemented.
Huynh, Sam DuPhat. "Testability analysis for mixed analog/digital circuit test generation and design for test /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/6134.
Повний текст джерелаCui, Hongzhu. "In Silico Edgetic Profiling and Network Analysis of Human Genetic Variants, with an Application to Disease Module Detection." Digital WPI, 2020. https://digitalcommons.wpi.edu/etd-dissertations/596.
Повний текст джерелаSancheti, Sandeep. "Active microstrip antenna self-detecting oscillator characterisation." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295427.
Повний текст джерелаYang, Wei-Yuan, and 楊維元. "Applications of Polarization Modulator for Multi-service Signal Generation Module." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/wq8e97.
Повний текст джерела國立臺北科技大學
光電工程系研究所
102
In this work, we propose and experimentally demonstrated a multi-service signals generation module based on polarization modulator for RoF communication system. With the assistance of a polarization beam splitter, the pol-x and pol-y sidebands of optical polarization modulated multi-service signals can be separated colorlessly to achieve optical double/quadruple frequency. 3-band services are integrated and delivered simultaneously. After transmitting over 25 km single mode fiber, three band signals include OFDM and OOK are successfully achieved the qualities of radio-over-fiber communication.
Ku, Chung-Chiang, and 谷中強. "Fabrication of Wideband Output Module with Automatic Level Control in the RF Signal Generator." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/81828299060621942988.
Повний текст джерела國立交通大學
電信研究所
83
The fabrication of wideband automatic level control(ALC) module with applications to RF signal generator is pre- sented in this thesis. The module has the capability of eliminating the fluctuation from the synthesizer,adjusting the output level precisely and generating low distortion amplitude modulation. The wideband design is under consid- eration when fabricates each sub-module.The module consists of the modulator,RF amplifier,power splitter,detector,loop filter and post attenuator.The features of PIN diodes, Schottky diodes and other passive components are charact- ized to achieve the broadband circuit design from 160 MHz to 1280MHz.In addition, the close-loop stability of the ALC and the linearization of the detector and modulator are also analyzed for further exploration.The output module with frequency range up to 1280 MHz,+13dBm maximum output ,stable and precise control of the output power level,50k Hz modulation bandwidth, less then 2% AM distortion under 30% AM index and less then 4% AM distortion under 70% AM index has been successfully fabricated.