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Dissertations / Theses on the topic 'Phase to amplitude converter'

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Published: 4 June 2021

Last updated: 2 February 2022

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1

Kratochvíl, Petr. "Generátor přesného kmitočtu - DDS." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217814.

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This work deals with frequency generators based on the direct digital synthesis method DDS. Basic principles and attributes of the frequency generator DDS are explained. The text describes parameters influencing and defining a quality of the generated signal. The list of available integrated circuits realizing the direct digital synthesis is mentioned. A construction of the DDS generator with a device AD9954 and the generator control are described. At the end of the work, the function and parameters of the designed generator are verified.

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2

Gunawan, Tadeus. "Two-Phase Boost Converter." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/200.

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A boost converter is one of the most efficient techniques to step up DC input voltage to a higher needed DC output voltage. The boost converter has many possible applications, such as in a photovoltaic system, hybrid car and battery charger. The proposed prototype in this report is a proof of concept that a Two-Phase Boost Converter is a possible improvement topology to offer higher efficiency without compromising any advantages readily offered by a basic boost. The prototype is designed to be able to handle up to 200 watts of output power with an input of 36 volts and an output of 48 volts. T

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3

Gao, Jason. "Equalisation for carrierless amplitude and phase modulation." Curtin University of Technology, Western Australian Telecommunications Research Institute (WATRI), 2002. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=14683.

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Carrierless amplitude and phase (CAP) modulation is generally regarded as a bandwidth efficient two-dimensional (2-D) passband line code. It is closely related to the pulse amplitude modulation (PAM) and quadrature amplitude modulation (QAM) schemes. CAP has been proposed for various digital subscriber loop (DSL) systems over unshielded twisted pairs of copper wires. In this thesis, our main focus is on the minimum mean-square error (MMSE) performance of the ideal (i.e., infinite length) linear and non-linear (decision feedback) CAP receivers/equalisers in the presence of additive, coloured Ga

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4

Mayer, Uwe. "Hochfrequenzschaltungen zur Einstellung von Amplitude und Phase." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-88062.

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Die vorliegende Arbeit ist der analytischen Untersuchung und Weiterentwicklung von Methoden und Schaltungen zur Einstellung der Signalphase und -amplitude gewidmet. Hierbei wird zum Ziel gesetzt, die Leistungsfähigkeit dieser Schaltungen als analoge Hochfrequenz-Baugruppen in Empfangs- und Sendeschaltkreisen mit einem vergleichbaren oder geringerem schaltungstechnischen Aufwand und Strombedarf zu verbessern und dies anhand von Implementierungsbeispielen zu bestätigen. Die Dämpfungsglied-Topologien , T, überbrücktes T und X werden modelliert und hinsichtlich der Phasenbeeinflussung analysiert,

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5

Gyongy, Istvan. "Phase/amplitude estimation for tuning and monitoring." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:f398b986-e8a0-403a-9118-5edae6403e00.

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The benefits of good loop tuning in the process industries have long been recognized. Ensuring that controllers are kept well-configured despite changes in process dynamics can bring energy and material savings, improved product quality as well as reduced downtime. A number of loop tuning packages therefore exist that can, on demand, check the state of a loop and adjust the controller as necessary. These methods generally apply some form of upset to the process to identify the current plant dynamics, against which the controller can then be evaluated. A simple approach to the automatic tuning

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6

Wedgwood, Kyle C. A., Kevin K. Lin, Ruediger Thul, and Stephen Coombes. "Phase-Amplitude Descriptions of Neural Oscillator Models." BioMed Central, 2013. http://hdl.handle.net/10150/610255.

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Phase oscillators are a common starting point for the reduced description of many single neuron models that exhibit a strongly attracting limit cycle. The framework for analysing such models in response to weak perturbations is now particularly well advanced, and has allowed for the development of a theory of weakly connected neural networks. However, the strong-attraction assumption may well not be the natural one for many neural oscillator models. For example, the popular conductance based Morris-Lecar model is known to respond to periodic pulsatile stimulation in a chaotic fashion that cann

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7

Phipps, Alex Geoffrey. "Linearization through Carrier Amplitude Modulation (LCAM) control of the boost converter." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0014374.

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8

Wright, Dean. "Temporal phase and amplitude statistics in coherent radiation." Thesis, University of Nottingham, 2005. http://eprints.nottingham.ac.uk/12126/.

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Interest in coherent remote sensing systems has stimulated investigations in the properties laser propagation through extended atmospheric turbulence. This thesis investigates the statistics of phase, and phase related, observables using analytical and computational techniques, together with experimental results. The phase screen technique is used to simulate perturbations to the refractive index of a medium through which the radiation propagates. Several different turbulence models (Gaussian correlated noise, Kolmogorov turbulence, Tatarski and Von Karman spectral models) are investigated, an

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9

Barros, M. de P. "Crystal filters having prescribed amplitude and phase characteristics." Thesis, University of Essex, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374712.

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10

Cheah, Victoria Vik Ee. "Prosodic rhythm in the speech amplitude envelope : amplitude modulation phase hierarchies (AMPHs) and AMPH models." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607862.

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11

Stihi, Omar. "Single phase controlled current PWM converter." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63844.

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12

Salvatierra, Thomas R. "PWM Buck Converter as a Dynamic Power Supply for EnvelopeTracking and Amplitude Modulation." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1453826990.

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13

Gagnon, Nicolas. "Phase Shifting Surface (PSS) and Phase and Amplitude Shifting Surface (PASS) for Microwave Applications." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19826.

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This thesis describes an electrically thin surface used for electromagnetic applications in the microwave regime. The surface is free-standing and its primary purpose is to modify the phase distribution, or the phase and amplitude distribution of electromagnetic fields propagating through it: it is called phase shifting surface (PSS) in the first case, and phase and amplitude shifting surface (PASS) in the second case. For practical applications, the surface typically comprises three or four layers of metallic patterns spaced by dielectric layers. The patterns of the metallic layers are design

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14

Kováč, Marek. "Digitální AM/FM vysílač." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220601.

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This master thesis is focused on the theoretical description and practical implementation of software defined transmitter. The main aim of this thesis was made the prototype of software defined transmitter in FM band. Theoretical part is determined to description of basic parts of equipment and working principles to understand the basic principle of digital transmitters and define the appropriate component base for construction. Discussed are used types of A/D and D/A converters, blocks of digital signal processing and the roles, which these components performs. The second part is focused prac

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15

Cao, Zhongsheng. "Multi-Phase Smart Converter for PV System." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/52584.

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Recent research and industrial accomplishment has revealed the advantages of cascaded smart converter PV system over traditional centralized and string PV system. However, even by adopting the cascaded smart converter, it is not always possible to track maximum power point (MPP) for all the panels under heavy shading condition, and a central converter is still required to track the peak power point of PV array. Based on the analysis of system configurations for smart converter PV system, an alternative PV system configuration is introduced which can extract peak power from all the panels unde

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16

Suleski, Thomas J. "The talbot effect : Fresnel diffraction of amplitude and phase gratings." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/29829.

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17

Eisele, Andreas. "PHASE AND AMPLITUDE MODULATED OFDM FOR DISPERSION MANAGED WDM SYSTEMS." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4178.

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Amplitude and phase modulated optical OFDM (Orthogonal Frequency Division Multiplexing) are analyzed in a 50GBit/s single channel and 40GBit/s 5 channel 512 subcarrier non-ideal dispersion-compensated fiber optic communication systems. PM-OFDM is investigated as an alternative to AM-OFDM to alleviate the problem associated with amplitude-modulated signals in a nonlinear medium. The inherent dispersion compensation capability in OFDM (using a cyclic prefix) allows transmission over a link whose dispersion map is not exactly known. OFDM also mitigates the effects of dispersion slope in wavelengt

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18

Perrins, Erik Samuel. "Reduced Complexity Detection Methods for Continuous Phase Modulation." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd969.pdf.

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19

Charles, Cameron T. "A calibrated phase and amplitude control system for phased-array transmitters /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5911.

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20

Doyle, Owen L. "Relation phase-amplitude dans un laser semiconducteur influence des paramètres structuraux /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37604734k.

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21

Gebrehiwet, Gebregergis Abraham. "A three-phase AC/AC matrix converter system." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16324.

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Thesis (MScIng)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: The thesis discusses the analysis and design of a three-phase-to-three-phase direct AC-AC matrix converter. A background study of the various matrix converter topologies and their modulation strategies are presented. The associated PWM strategy of each matrix converter topology is investigated. In addition, a detailed explanation of the three safe commutation strategies is presented. The research focuses on the design and analysis of the direct AC-AC matrix converter topology. That includes the design of the main bi-

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22

Islas-Cital, Alan. "Amplitude and phase sonar calibration and the use of target phase for enhanced acoustic target characterisation." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3460/.

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This thesis investigates the incorporation of target phase into sonar signal processing, for enhanced information in the context of acoustical oceanography. A sonar system phase calibration method, which includes both the amplitude and phase response is proposed. The technique is an extension of the widespread standard-target sonar calibration method, based on the use of metallic spheres as standard targets. Frequency domain data processing is used, with target phase measured as a phase angle difference between two frequency components. This approach minimizes the impact of range uncertainties

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23

Zhou, Binxin. "Control techniques for a three-phase to three-phase AC/AC matrix converter." Thesis, Heriot-Watt University, 2002. http://hdl.handle.net/10399/1145.

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24

Thacker, Timothy Neil. "Phase-Locked Loops, Islanding Detection and Microgrid Operation of Single-Phase Converter Systems." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/29281.

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Within recent years, interest in the installation of solar-based, wind-based, and various other renewable Distributed Energy Resources (DERs) and Energy Storage (ES) systems has risen; in part due to rising energy costs, demand for cleaner power generation, increased power quality demands, and the need for additional protection against brownouts and blackouts. A viable solution for these requirements consists of installation of small-scale DER and ES systems at the single-phase (1Î¦) distribution level to provide ancillary services such as peak load shaving, Static-VAr Compensation (STATCOM),

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25

Yeago, Taylor Craig. "A Two-Phase Buck Converter with Optimum Phase Selection for Low Power Applications." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51230.

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Power consumption of smart cameras varies significantly between sleep mode and active mode, and a smart camera operates in sleep mode for 80 — 90% of time for typical use. To prolong the battery life of smart cameras, it is essential to increase the power converter efficiency for light load, while being able to manage heavy load. The power stage of traditional buck converter is optimized for maximum load, at the cost of light-load efficiency. Wei proposed a multiphase buck converter incorporating the baby-buck concept and optimum number of phases (ONP) control. This thesis research investigate

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26

Plewicki, Mateusz. "Phase, amplitude, and polarization pulse shaping in order to influence molecular processes." [S.l.] : [s.n.], 2006. http://www.diss.fu-berlin.de/2007/104/index.html.

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27

Senin, Sergei. "Dynamics of amplitude and phase scintillations in a millimetre-wave satellite downlink." Thesis, University of Portsmouth, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310392.

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28

Matalgah, Mustafa M. "Geometric theory for designing optical binary amplitude and binary phase-only filters /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9717158.

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29

Yahalom, Gilad. "Amplitude and phase modulation techniques for an asymmetric multi-level outphasing transmitter." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78475.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 93-95).<br>New techniques for improving outphasing transmitters show potential of breaking the traditional linearity-efficiency trade-off by using highly efficient non-linear switching Power Amplifiers (PAs). This work focuses on two of the main building blocks of modem outphasing systems, the power supply switching network and the phase modulator. Both are ubiquitous building blocks in modern RF tr

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30

Memarzadeh, Sarvenaz. "Noninterferometric tomographic reconstruction of 3D static and dynamic amplitude and phase objects." University of Dayton / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1405525073.

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31

Harris, Derek. "A study of a nonlinear amplitude equation modelling spherical couette flow." Thesis, University of Exeter, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367377.

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32

Mino, Kazuaki. "Novel hybrid unidirectional three-phase AC-DC converter systems /." [S.l.] : [s.n.], 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18185.

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33

Cheng, Shuang. "Two-Phase Buck Converter Optimize by Echo State Network." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/87439.

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Buck converter is a power converter which drops high input voltage into a low output voltage in high efficiency. With this characteristic, it has been used in a great number of applications. Optimized the maximum load to increase the buck converter's efficiency at the cost of light load efficiency is a general way used in a traditional buck converter because it has a higher impact on power consumption. We propose a novel way of designing the two-phase buck converter with light load efficiency improvement in this thesis. The purposed two-phase buck converter uses RC delay to control switch fre

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34

Loh, Chee Keong Richard Marcus. "Phase shifted bridge converter for a high voltage application." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/12459.

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In airborne applications, the size and weight of equipment are critical parameters. The power supply for an airborne radar needs to have a high output power density while operating with a high efficiency. Conventional Travelling Wave Tube (TWT) radars require a high voltage power supply for operation and is prone to arcing. As the radar is a crucial piece of equipment, its power supply must be designed to withstand such operation. The Phase Shifted Pulse Width Modulation Zero Voltage Switching Full Bridge Converter has been the subject of many papers due to its ability to provide high output p

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35

Jabloun, Meryem. "Modélisation de signaux fortement non stationnaires à phase et à amplitude locales polynomiales." Phd thesis, Grenoble INPG, 2007. http://tel.archives-ouvertes.fr/tel-00176079.

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Ce travail de recherche est consacré à l'élaboration et le développement d'une nouvelle méthode d'estimation<br />et de reconstruction de signaux fortement non-stationnaires, modulés non-linéairement à la fois<br />en amplitude et en fréquence. L'estimation de tels signaux dans un contexte trés bruité est un problème<br />délicat et les méthodes existantes de la littérature présentent plusieurs inconvénients dans ce cas.<br />Nous avons montré comment une approche locale permet une meilleure adaptabilité du modèle à la<br />nature des variations locales des amplitudes et des fréquences instant

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36

Rahimi-Larijani, B. "Dynamic Fourier phase and amplitude analysis and computational techniques in gated cardiac scintigraphy." Thesis, University of Brighton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382224.

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37

Lawrence, Joseph Scott. "Use of Phase and Amplitude Gradient Estimation for Acoustic Source Characterization and Localization." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6969.

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Energy-based acoustic quantities provide vital information about acoustic fields and the characterization of acoustic sources. Recently, the phase and amplitude gradient estimator (PAGE) method has been developed to reduce error and extend bandwidth of energy-based quantity estimates. To inform uses and applications of the method, analytical and experimental characterizations of the method are presented. Analytical PAGE method bias errors are compared with those of traditional estimation for two- and three-microphone one-dimensional probes. For a monopole field when phase unwrapping is possibl

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38

Carlowitz, Christian, Thomas Girg, Hatem Ghaleb, and Xuan-Quang Du. "Efficient Ultra-High Speed Communication with Simultaneous Phase and Amplitude Regenerative Sampling (SPARS)." De Gruyter, 2017. https://tud.qucosa.de/id/qucosa%3A38596.

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For ultra-high speed communication systems at high center frequencies above 100 GHz, we propose a disruptive change in system architecture to address major issues regarding amplifier chains with a large number of amplifier stages. They cause a high noise figure and high power consumption when operating close to the frequency limits of the underlying semiconductor technologies. Instead of scaling a classic homodyne transceiver system, we employ repeated amplification in single-stage amplifiers through positive feedback as well as synthesizer-free self-mixing demodulation at the receiver to simp

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39

Thomas, Edwin Christopher. "Phase and amplitude variations in the wave fields of ionospherically reflected radio waves." Thesis, University of Leicester, 1986. http://hdl.handle.net/2381/35807.

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The wavefronts of high frequency (HF) radio waves received after reflection from the ionosphere exhibit both spatial non-linearities and temporal variations which limit the performance of large aperture receiving arrays. The objective of this investigation was to measure the phase and amplitude of ionospherically propagated signals in order to relate these parameters to the reflection process. This thesis describes the design and construction of a large aperture multi-element array and its implementation for wavefrot investigations. The hardware and software developed to control the equipment

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40

Botcharova, M. "Modelling and analysis of amplitude, phase and synchrony in human brain activity patterns." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1443453/.

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The critical brain hypothesis provides a framework for viewing the human brain as a critical system, which may transmit information, reorganise itself and react to external stimuli efficiently. A critical system incorporates structures at a range of spatial and temporal scales, and may be associated with power law distributions of neuronal avalanches and power law scaling functions. In the temporal domain, the critical brain hypothesis is supported by a power law decay of the autocorrelation function of neurophysiological signals, which indicates the presence of long-range temporal correlation

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41

Zi, Juan. "Differential amplitude/phase space-time modulation." Thesis, 2003. http://hdl.handle.net/2429/15339.

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In this thesis, a differential amplitude/phase space-time modulation (DAPSTM) is proposed for multiple transmit antenna wireless systems over flat Rayleigh fading channels. Two conventional noncoherent detection schemes, namely, simply heuristic (SH) differential detection (DD) and maximum likelihood (ML) DD are presented. Furthermore, two improved noncoherent detection schemes, multiple-symbol detection (MSD) and decisionfeedback DD (DF-DD) with lower decoding complexity are derived. By taking the dependencies among the received symbols into account, MSD and DF-DD can reduce the error

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42

Mayer, Uwe. "Hochfrequenzschaltungen zur Einstellung von Amplitude und Phase." Doctoral thesis, 2011. https://tud.qucosa.de/id/qucosa%3A26005.

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Die vorliegende Arbeit ist der analytischen Untersuchung und Weiterentwicklung von Methoden und Schaltungen zur Einstellung der Signalphase und -amplitude gewidmet. Hierbei wird zum Ziel gesetzt, die Leistungsfähigkeit dieser Schaltungen als analoge Hochfrequenz-Baugruppen in Empfangs- und Sendeschaltkreisen mit einem vergleichbaren oder geringerem schaltungstechnischen Aufwand und Strombedarf zu verbessern und dies anhand von Implementierungsbeispielen zu bestätigen. Die Dämpfungsglied-Topologien , T, überbrücktes T und X werden modelliert und hinsichtlich der Phasenbeeinflussung analysiert,

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43

Nesbitt, James William. "A novel single phase to three phase converter." 1990. http://catalog.hathitrust.org/api/volumes/oclc/23057889.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1990.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaf 67).

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44

Soplata, Austin Edward. "A thalamocortical theory of propofol phase-amplitude coupling." Thesis, 2019. https://hdl.handle.net/2144/38580.

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Propofol is one of the most commonly used general anesthetics in the world, and yet precisely how it enables loss of consciousness still eludes us. It exhibits rich spectral characteristics on electroencephalogram (EEG) recordings from human patients, including alpha oscillations (8-14 Hz) and Slow Wave Oscillations (SWO, 0.5-2.0 Hz). Additionally, these two oscillations are phase-amplitude coupled (PAC) in a dose-dependent manner: low doses cause “trough-max” coupling where alpha power is maximal during the trough of the SWO cycle, while high doses cause “peak-max” coupling where alpha power

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45

Kuo, Chou-Ming, and 郭洲銘. "High speed and Low Power Digitalized A/D Converter and D/A Converter for Pulse Amplitude Modulation System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/19844815888006200242.

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碩士<br>國立交通大學<br>電控工程研究所<br>98<br>In modern wire-line communication systems, the request for high speed data rate is growing. Pulse amplitude modulation(PAM) technique is a transmission technique which modulates digital data into analog amplitude. As an example of 16PAM, each voltage value represents four digital data. Under the same bandwidth limitation, PAM technique rises data rate as compared to binary transmission. In this thesis, our topic is to design high speed A/D converter and D/A converter for the transmitter(TX) and receiver(RX) for high speed pulse amplitude modulation systems. A b

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46

Luo, Wei-shiuan, and 羅偉軒. "Two-phase Active-clamping Boost Converter." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/18640041476362519367.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>103<br>Many of power stages work together, there are two kinds method to operating, one of method is in series connection, the other one is parallel connection. If we want to achieve higher output power efficience, we always use the way of paralleling connection, the main of topic in this paper will discuss that use the way of paralleling power stages to increase efficience in the whole of circuit, and complete to the work of power factor correction. Paralleling power stage A method to achieve the desired current sharing is with equalizing resistors, what it means p

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47

Chiu, Wei-che, and 邱偉哲. "An Eight-phase Buck Converter Design." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/43718328561982383327.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>96<br>The thesis presents a multiphase buck converter design. Multi-phase buck converters have the characteristics of high power density, high currents, accurate voltage output, and fast transient-response. Therefore, it is suitable to supply power to a new generation of central processing units. A 1V eight-phase buck converter is implemented with a 12V input and a 120A load. It was simulated utilizing IsSpice to check its feasibility. The eight-phase buck converter consists of a circuit of PWM signal control power switch and a power stage. Circuit of PWM signal con

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48

Lin, Cheng-Pin, and 林正斌. "Comparison Between Dual Phase Interleaved PFC Converter and ZCS PFC Converter." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/rnp27c.

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碩士<br>崑山科技大學<br>電子工程研究所<br>96<br>In This thesis, we study and implement a 300W BCM (Boundary Current Mode) dual-phase interleave PFC (Power Factor correction) circuit and a 300W active PFC circuit with ZCS (Zero Current Switching)。 At first, we describe the operation and topology difference between these circuits, then design and implement both of these practical PFC circuits for performance comparison. Finally, the results of comparisons are presented. According to comparisons of switching waveforms, power factors and other relative experiment results, the BCM interleaved PFC and ZCS PFC are

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49

Lee, Ping-Hwan, and 李秉寰. "Unitary Space-Time Modulation using Amplitude Phase-Shift Keying." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/fg527u.

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碩士<br>國立中央大學<br>通訊工程研究所<br>96<br>A systematic design of unitary space-time modulation using phase shift-keying (PSK) signals was proposed in 2000. In this thesis, we propose three schemes of unitary space-time modulation (USTM) that use amplitude phase-shift keying (APSK) signal points. We utilize the computer to search codes in USTM that maximize the diversity product ζ. Several of searched codes in Scheme 1 and Scheme 3 have better diversity product ζ than the codes for the proposed scheme in 2000. Simulation results confirm that our searched codes have better error performances than the pr

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Wang, Show-Chieng, and 王壽誠. "A New Phase to Three Phase Converter without Current Sensor." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/82752131410111124977.

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