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Dissertations / Theses on the topic 'ARC filters'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Bird, Simon. "Investigations of Electric Arc Furnace Slag Filters: Phosphorus Treatment Performance, Removal Mechanisms and Material Reuse." ScholarWorks @ UVM, 2009. http://scholarworks.uvm.edu/graddis/24.

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Around the world, the eutrophication of freshwater lakes and streams by the excess loading of phosphorus (P) has become one of the most important water quality issues. In Vermont, P pollution from urban and agricultural non-point sources has led to severe blooms of toxic cyanobacteria in Lake Champlain, and the degradation of the lake’s value as a drinking water source and its recreation potential. Electric arc furnace (EAF) steel slag has been identified as an effective material for use as a filter media for the removal of P from both point and non-point sources of pollution. In order to fur
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2

Shadrin, Aleksandr. "Analogové pole pro realizaci programovatelného filtru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221026.

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The state-variable analog filter topologies are described. Using the transfer function theory and operational configurations suitable for integration and derivation, a new universal filter topology are proposed. The circuit has been implemented in CMOS technology by using six operational amplifiers, eight analog switches and five programming resistor array. Tunable corner frequencies, quality factors and gain are realized. Using the serial peripheral interface or digital memory can be realized this real-time digitally programmable first- and second-order analog filter with the tunable paramete
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3

Friedl, Martin. "Syntéza moderních struktur kmitočtových filtrů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233634.

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Within modern frequency structures, the filter frequency region of up to 10 MHz constitutes a promising research topic that currently attracts intensive attention of specialists interested in the problem. The main reason of this fact consists in that the rapid development of modern technology allows the production of innovated structures of the analog frequency filters required in the defined band. In this context, however, it is also necessary to refine the methods applied in the synthesis and optimization of these structures; such improvement should be carried out with respect to fundamental
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4

Szabó, Zoltán. "Příspěvek k optimální syntéze filtračních obvodů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-233563.

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The presented dissertation thesis is focused on the optimization of filtering circuit synthesis. In the five main sections of this work, the author analyzes partial problems related to several areas within the synthesis of modern filtering circuits. The first chapter constitutes an examination of elementary aspects which characterize present-day integrated circuits in voltage feedback operational amplifiers, and this main content is further complemented with a view on possible application of these circuits for the designing of filtering circuits as proposed within subsequent parts of the thesi
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5

Kříž, Petr. "Adaptivní kmitočtový filtr." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218632.

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The aim of this work is to design a filter of the type low–pass of order 5th with Butterworth’s approximation in the range of over-tuning 10 – 100 kHz and if it will be possible so! achieve even higher marginal frequencies. To compare two typical representatives of the frequency filters cascading and non-cascading synthesis from the viewpoint the accuracy of an! approximation function, sensitivity to the tolerance values of components, number of the components (mainly OZ) and viability, especially the possibility of electronic over-tuning in selected frequency range. On the basis of these cond
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6

Fröhlich, Lubomír. "Aktivní kmitočtové filtry pro vyšší frekvence." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-233616.

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This thesis deals with the synthesis and optimization of frequency analogue filters with modern active elements usable for higher frequencies. The thesis is divided into three parts, the first part deals with the problematic concerning Leap-Frog combined ARC structure. Due to a difficult design, this method is not described in a detail and used in practice, although it shows e.g. low sensitivity. Firstly, a complete analysis of individual filters was made (for and T endings) and consequently these findings were used during implementation of this method to NAF program. Finally, samples of real
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7

ROCHA, RENATO SAYAO CRYSTALLINO DA. "A DEPENDENCY TREE ARC FILTER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35858@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>A tarefa de Processamento de Linguagem Natural consiste em analisar linguagens naturais de forma computacional, facilitando o desenvolvimento de programas capazes de utilizar dados falados ou escritos. Uma das tarefas mais importantes deste campo é a Análise de Dependência. Tal tarefa consiste em analisar a estrutura gramatical de frases visando extrair aprender dados sobre suas relações de dependência. Em uma sentença, essas relações se apre
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8

Mustapha, Nazir Mohamad. "Reactive filtered arc evaporation." Thesis, Loughborough University, 1993. https://dspace.lboro.ac.uk/2134/26797.

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Conventional physical vapour deposition (PVD) techniques usually result in films of lower quality than the corresponding bulk material. A major problem with PVD films is the presence of columns and voids throughout the thickness of the film. The films may have a low packing density, low micro-hardness and in many cases poor adhesion to the substrate. Many of these problems are a direct consequence of the low energy of the depositing atoms arriving at the substrate during film growth. The resulting film porosity gives rise to a reduction in mechanical strength, and in the case of dielectric opt
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9

Bořecký, Tomáš. "ARC oscilátor s bloky s řiditelným parametrem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217807.

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Within the master’s thesis there is comparison of different structures of ARC oscillators with respect to their harmonic distortion. Individual blocks of oscillator are analyzed. Attention is paid to choosing and design of suitable ARC filter structure and possibilities of its tuning. Also possibilities of stabilization of amplitude are analyzed. Different types of controlled amplifiers and circuits for controlling of their amplification are discussed. Next captures are focused to designing and simulation of the ARC oscillator. The oscillator can be tuned in the frequency range from 100 Hz to
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10

Oblitas, Raissa Lima de. "Avaliação da composição elementar de filmes finos de ligas metálicas depositados por Arco Catódico Filtrado em Vácuo utilizando RBS e EDS quantitativo." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-24102016-115435/.

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Devido à relevância de filmes finos, as técnicas que são utilizadas para produzi-los e também para caracteriza-los tem se tornado importante. Neste contexto, foram analisados filmes finos de até 100 nm, de duas ligas metálicas (cromel e alumel), obtidos a partir da deposição por plasma de Arco Catódico Filtrado em Vácuo (Filtered Cathodic Vacuum Arc - FCVA). O objetivo deste projeto foi avaliar a similaridade em composição elementar entre os materiais utilizados para deposição, que operam como cátodos, e os filmes finos depositados, a partir de medições obtidas pela técnica de microanálise qua
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11

Veerasamy, Vijayen S. "Tetrahedral amorphous carbon : deposition, characterisation and electronic properties." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337824.

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Dowling, Andrew John, and andrewjohn3055@yahoo com. "Novel strategies for surface micromachining TiN thin films deposited by filtered arc." Swinburne University of Technology. Industrial Research Institute Swinburne, 2005. http://adt.lib.swin.edu.au./public/adt-VSWT20051129.085933.

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TiN is used commercially as a wear resistant coating on cutting tools and as a diffusion barrier in microelectronics. TiN has gained increased interest as a material for MEMS, however there has been very little work carried out in the area of patterning and releasing TiN for use as a structural MEMS material. This thesis presents an investigation into the patterning and release of filtered arc deposited TiN thin films using surface micromachining techniques. Two novel strategies are presented for patterning TiN thin films and are achieved using excimer laser micromachining and photolithograph
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13

Elzwawi, Salim Ahmed Ali. "Cathodic Arc Zinc Oxide for Active Electronic Devices." Thesis, University of Canterbury. Electrical and Computer Engineering, 2015. http://hdl.handle.net/10092/10852.

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The filtered cathodic vacuum arc (FCVA) technique is a well established deposition method for wear resistant mechanical coatings. More recently, this method has attracted attention for growing ZnO based transparent conducting films. However, the potential of FCVA deposition to prepare ZnO layers for electronic devices is largely unexplored. This thesis addresses the use of FCVA deposition for the fabrication of active ZnO based electronic devices. The structural, electrical and optical characteristics of unintentionally doped ZnO films grown on different sapphire substrates were systematically
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14

Minault, Christophe S. "Filtered vacuum arc deposition of diamond like carbon films on sharp edged samples." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298488.

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15

Humbert, Georges. "Etude et réalisation de composants passifs tout-fibre : réseaux longue période par arc électrique." Rouen, 2002. http://www.theses.fr/2002ROUES058.

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Les réseaux longue période sont des composants passifs tout-fibre utilisés dans le domaine des télécommunications par fibre optique ou de l'instrumentation optique. Ils sont obtenus en réalisant une modulation des paramètres opto-géométriques de la fibre optique ; modulation dont la période est de plusieurs centaines de micromètres. Ils induisent à une longueur d'onde de résonance un couplage co-directionnel entre le mode fondamental et un mode de gaine. Un filtrage large-bande est alors obtenu. Une étude fondée sur la théorie des modes couplés est menée pour dissocier l'influence des différen
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16

Soares, Junior Dirceu. "Análise de filtros híbridos aplicados a um forno elétrico a Arco." Universidade Federal do Espírito Santo, 2011. http://repositorio.ufes.br/handle/10/6222.

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Made available in DSpace on 2016-12-23T14:07:27Z (GMT). No. of bitstreams: 1 Dissertacao de Dirceu Soares Junior Parte 1.pdf: 2325132 bytes, checksum: 944653981d05fdcc1c69ff97b342de4f (MD5) Previous issue date: 2011-09-22<br>Uma planta siderúrgica caracteriza-se pela existência em seu processo produtivo de cargas não lineares de elevada potência. Dentre estas cargas, as siderúrgicas do tipo mini-mill possuem normalmente Forno Elétrico a Arco (FEA) na sua fase inicial de produção do aço, que ocorre a partir da fusão de sucatas metálicas como principal matéria-prima utilizada. Os fornos elét
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17

Kose, Neslihan. "Light Flicker Evaluation Of Electric Arc Furnaces Based On Novel Signal Processing Algorithms." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611074/index.pdf.

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In this research work, two new flickermeters are proposed to estimate the light flicker caused by electric arc furnaces (EAFs) where the system frequency deviates significantly. In these methods, analytical expressions of the instantaneous light flicker sensation are obtained beginning from a voltage waveform and these expressions are used to obtain a flicker estimation method based on the IEC (International Electrotechnical Commission) flickermeter. First method is a spectral decomposition based approach using DFT to estimate the light flicker. The leakage effect of the DFT algorithm due to f
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18

Gundala, JayaKrishna. "A study on the decimation stage of a Δ-Σ ADC with noise-shaping loop between the stages". Thesis, Linköpings universitet, Elektroniksystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69319.

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The filter complexity in the multi-stage decimation system of a Δ-Σ ADC increases progressively as one moves to higher stages of decimation due to the fact that the input word length of the higher stages also increases progressively. The main motivation for this thesis comes from the idea of investigating a way, to reduce the input word length in the later filter stages of the decimation system which could reduce the filter complexity. To achieve this, we use a noise-shaping loop between the first and later stages so that the input word length for the later stages remains smaller than in the c
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19

Baron, Daniel. "Utilisation des outils de la génomique expressionnelle pour l'étude de la différenciation sexuelle chez la truite arc-en-ciel, Oncorhynchus mykiss." Rennes 1, 2005. http://www.theses.fr/2005REN1S115.

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Ce travail visait, par des analyses transcriptomiques, à identifier des gènes impliqués dans la différenciation sexuelle naturelle et la masculinisation induite chez la truite arc-en-ciel. Une analyse par PCR en temps réel d'une centaine de candidats a mis en évidence des contrastes forts d'expressions entre ovaire et testicule. L'un de ces gènes, forkhead box L2 (foxl2), a fait l'objet d'une étude particulière confirmant sa grande conservation au sein de tous les vertébrés. Enfin, une analyse, par micro réseaux d'ADNc (10. 000 clones de truite), des effets d'un traitement in vivo par la 11ß-h
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20

Muller, Daliana. "Desenvolvimento de filtros cerâmicos fibrosos ara gases a altas temperaturas." Florianópolis, SC, 2008. http://repositorio.ufsc.br/xmlui/handle/123456789/91499.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Ciência e Engenharia de Materiais<br>Made available in DSpace on 2012-10-23T23:39:59Z (GMT). No. of bitstreams: 1 255098.pdf: 3928389 bytes, checksum: 494a766f18af25327a7e680e3bf8b306 (MD5)<br>Estruturas fibrosas são especialmente indicadas para filtração a temperaturas elevadas, pela alta permeabilidade aliada à alta eficiência de coleta. Neste trabalho, mantas refratárias sílico-aluminosas comerciais foram prensadas uniaxialmente, utilizando-se 10% em massa de acetato de polivini
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Sun, Shuo. "Parameter Estimation of Microwave Filters." Thesis, University of North Texas, 2015. https://digital.library.unt.edu/ark:/67531/metadc822826/.

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The focus of this thesis is on developing theories and techniques to extract lossy microwave filter parameters from data. In the literature, the Cauchy methods have been used to extract filters’ characteristic polynomials from measured scattering parameters. These methods are described and some examples are constructed to test their performance. The results suggest that the Cauchy method does not work well when the Q factors representing the loss of filters are not even. Based on some prototype filters and the relationship between Q factors and the loss, we conduct preliminary studies on alter
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Prigent, Stephane. "Optimisation du traitement de l'azote et du phosphore des eaux usées domestiques adapté aux filtres plantés de roseaux." Phd thesis, Ecole des Mines de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00809593.

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Le rejet des nutriments (phosphates et nitrates) issues des eaux usées domestiques entraînent la dégradation des écosystèmes (74 % du territoire français concerné en 2006). Compte tenu de la situation, l'Etat français a promulgué la Loi sur l'Eau et les Milieux Aquatiques le 30décembre 2006 qui vise à atteindre le " bon état écologique des eaux et des milieux aquatiques " d'ici 2015. Cette notion bien que difficilement intégrable a généré des normes plus strictes pour les stations d'épuration en termes de rejet de nutriments vers le milieu récepteur (jusque 15 mg NTOT.L-1 et 2 mg PTOT.L-1). De
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Karnati, Nikhil Reddy. "A Power Efficient Polyphase Sharpened CIC Decimation Filter for Sigma-Delta ADCs." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1318130811.

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24

Sridharan, M. K. "Subband Adaptive Filtering Algorithms And Applications." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/266.

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In system identification scenario, the linear approximation of the system modelled by its impulse response, is estimated in real time by gradient type Least Mean Square (LMS) or Recursive Least Squares (RLS) algorithms. In recent applications like acoustic echo cancellation, the order of the impulse response to be estimated is very high, and these traditional approaches are inefficient and real time implementation becomes difficult. Alternatively, the system is modelled by a set of shorter adaptive filters operating in parallel on subsampled signals. This approach, referred to as subband adapt
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25

Jalali, Mazlouman Shahrzad. "A frequency-translating hybrid architecture for wideband analog-to-digital converters." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2745.

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Many emerging applications call for wideband analog-to-digital converters and some require medium-to-high resolution. Incorporating such ADCs allows for shifting as much of the signal processing tasks as possible to the digital domain, where more flexible and programmable circuits are available. However, realizing such ADCs with the existing single stage architectures is very challenging. Therefore, parallel ADC architectures such as time-interleaved structures are used. Unfortunately, such architectures require high-speed high-precision sample-and-hold (S/H) stages that are challenging to imp
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Sayadi, Bessem. "Détection multi-utilisateurs par réseau de filtres de Kalman parallèles pour les systèmes AMRC." Paris 11, 2003. http://www.theses.fr/2003PA112224.

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Les travaux élaborés dans le cadre de cette thèse ont porté sur l'étude de la détection multi-utilisateurs comme un problème d'estimation Bayésienne, basée sur une formulation d'état du système AMRC au rythme symbole. Le filtre de Kalman a été envisagé dans la littérature comme un détecteur multi-utilisateurs. Cependant, le bruit d'état présent dans la modélisation présente un caractère non Gaussien du à la nature discrète des symboles des utilisateurs. Dans la première partie de cette thèse, nous nous sommes particulièrement intéressés à remédier à la non Gaussiannité du bruit d'état en appli
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Hillers, Bernd [Verfasser], Axel [Akademischer Betreuer] Gräser, and Kai [Akademischer Betreuer] Michels. "Selective Darkening Filter and Welding Arc Observation for the Manual Welding Process / Bernd Hillers. Gutachter: Axel Gräser ; Kai Michels. Betreuer: Axel Gräser." Bremen : Staats- und Universitätsbibliothek Bremen, 2012. http://d-nb.info/1071993429/34.

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Carvalho, Kelly Caroline Mingorancia de. "Cálculo das sequências positiva e negativa em tempo real a partir do produto escalar de vetores espaciais: aplicações em compensadores de perturbações na rede." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-23022016-152515/.

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O presente trabalho pretende aplicar o método de cálculo de componentes simétricas por produtos escalares de vetores espaciais para o cálculo dos sinais de referência de compensadores de perturbação. Outras metodologias de cálculo de corrente de referência são apresentadas, analisadas e comparadas com o método implementado. Uma revisão de vetores espaciais nos sistemas abc e 0 é feita para auxílio da explicação do método de extração de componentes simétricas. O método é inicialmente apresentado de forma generalista, de modo que é realizado o cálculo de componentes de sequência positiva, negati
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Eriksson, Daniel. "Dimensionering av matning för nyskänkugn hos SSAB i Oxelösund." Thesis, Högskolan Väst, Avdelningen för Industriell ekonomi, Elektro- och Maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-15097.

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SSAB i Oxelösund ska bygga en ljusbågsugn för konvertering av verksamheten från huvudsakligen malmbaserad produktion till skrotbaserad produktion. I samband med byggandet av ljusbågsugnen kommer en ny 130 kV linje byggas och från denna linje kommer ett nytt 30 kV nät byggas för att mata ljusbågsugnen och två stycken skänkugnar. En av dessa skänkugnar är idag (2019) i drift med 10 kV men ska konverteras till 30 kV medan den andra är en ny elektriskt sett identisk ugn. Anslutningen av dessa tre ugnar till det avskilda 30 kV nätet är till för att begränsa spridning av övertoner och flimmer till ö
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Šerík, Martin. "Řídící jednotka pro DSP zpracování a distribuci zvukového signálu pro externí aktivní reproduktory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219964.

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The paper deals with analysis of the problems of digital signal processing and with design of the control unit for DSP and audio signal distribution to active external loudspeakers. It describes function of delta-sigma AD converters, the most widely used digital filters and Fast Fourier Transform. The processed signal will be send to external loudspeakers using an Ethernet interface. The paper also covers the design of signal processing unit's hardware and software. Achieved functions and parameters of the unit are discussed in conclusion.
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Gercek, Cem Ozgur. "Optimizing Transient And Filtering Performance Of A C-type 2nd Harmonic Power Filter By The Use Of Solid-state Switches." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608836/index.pdf.

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In this research work, the performance of a C-type, 2nd harmonic power filter is optimized by the use of a thyristor switched damping resistor. In the design of conventional C-type, 2nd harmonic filters<br>the resistance of permanently connected damping resistor is to be optimized for minimization of voltage stresses on filter elements arising from switchings in transient state and for maximization of filtering effectiveness in the steady-state. Transformer inrush current during energization of power transformers and connection of filter bank to the supply are the major causes of voltage stres
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32

Johansson, Tomas. "Utveckling av prototyp för uppmätning av blodflöde med Dopplersensorer." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132031.

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The current most common methods for measuring a blood vessels flow with Doppler technique requires a cable between the patient and measuring instrument. In today’s technology and the progress made in microelectronics have made it possible to manufacture ultrasonic transmitters and receivers, control electronics and antennas small enough for them to be integrated in a probe attached to the blood vessel. In order to read the flow of blood used NFC to securely send the information wireless to a smartphone or a tablet. This ensures that the cable between the patient and the measuring instrument wo
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Chaubet, Michel. "Filtres microondes à résonateurs diélectriques." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603852j.

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Jiao, Xiao Hu. "Filtres millimétriques à résonateurs diélectriques." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614541h.

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35

Bonnet, Émilie. "Étude des défauts de qualité des œufs chez la truite arc-en-ciel (Oncorhynchus mykiss) en relation avec les ARN messagers de l'ovocyte secondaire : une étude à l'aide de puces à ADNc." Rennes 1, 2006. http://www.theses.fr/2006REN1S087.

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La qualité d'un ovule peut être définie comme sa capacité à être fécondé et à permettre le développement d'un embryon viable et normal. En conditions naturelles ou d’élevage, cette qualité peut sensiblement varier sous l’effet de facteurs externes ou de manipulations zootechniques. Les perturbations de la qualité pourraient impliquer des modifications du stock cytoplasmique d’ARN messagers maternels des ovules. Pour explorer cette hypothèse, nous avons d’abord établi une méthode d’analyse détaillée de la qualité des œufs sur la base de l’étude de 3 conditions expérimentales. Par ailleurs, le t
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Boudy, Jérôme. "Optimisation de filtres en treillis non stationnaires et étude comparative de filtres multidimensionnels avec application au traitement d'antenne." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376121590.

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Marcos, Sylvie. "Filtres adaptatifs couplés pour transmission de données." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37607711n.

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Chiu, Siu-hau, and 招兆厚. "A search for optimal radiation therapy technique for lung tumours stereotactic body radiation therapy (SBRT) : dosimetric comparison of 3D conformal radiotherapy, static gantry intensity modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT) with flattening filter (FF) or flattening filter-free (FFF) beams." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/196549.

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Materials/Methods: Ten patients who underwent thoracic SBRT with primary stage I (T1/2N0) lung cancer or oligometastatic lung lesion, with PTV diameter ≤ 5cm were selected and were immobilized with Easyfoam or Vac-Lock. Planned/treated with inspiratory breath-hold (25 seconds, 70 to 80% of vital capacity) assisted with Active Breathing Control (ABC). Four treatment plans: non-coplanar 3DCRT, coplanar static gantry IMRT, coplanar VMAT (FF) and VMAT (FFF) were generated. Field arrangements, either static fields or partial arcs (duration=20 sec) were used to avoid direct beam entry to contralat
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Rodda, Lasya. "Baseband Noise Suppression in Ofdm Using Kalman Filter." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc115147/.

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As the technology is advances the reduced size of hardware gives rise to an additive 1/f baseband noise. This additive 1/f noise is a system noise generated due to miniaturization of hardware and affects the lower frequencies. Though 1/f noise does not show much effect in wide band channels because of its nature to affect only certain frequencies, 1/f noise becomes a prominent in OFDM communication systems where narrow band channels are used. in this thesis, I study the effects of 1/f noise on the OFDM systems and implement algorithms for estimation and suppression of the noise using Kalman fi
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Karlström, Magnus, and Christofer Rydvall. "Konstruktion av datainsamlingskort för mätsystemet COMET." Thesis, Linköping University, Department of Science and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1652.

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<p>During test flights SAAB uses the data acquisition system COMET 16. The part of the system that receives the signals from the sensors and converts them is called KSM 15. The purpose of this thesis is to develop a data acquisition module on stacked PC/104 modules with a lower production cost. </p><p>Our work has been divided into one part about analog signal conditioning and a second part with digital filtering and memory management of the sampled data. The analog part, designed of regular components like instrument amplifiers, voltage references, operational amplifiers and multiplexers, adj
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Mandal, Iman K. "Synthesis and Design of Microwave Filters and Duplexers with Single and Dual Band Responses." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc283787/.

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In this thesis the general Chebyshev filter synthesis procedure to generate transfer and reflection polynomials and coupling matrices were described. Key concepts such as coupled resonators, non-resonant nodes have been included. This is followed by microwave duplexer synthesis. Next, a technique to design dual band filter has been described including ways to achieve desired return loss and rejection levels at specific bands by manipulating the stopbands and transmission zeros. The concept of dual band filter synthesis has been applied on the synthesis of microwave duplexer to propose a method
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Lottiaux, Michel. "Caractérisation de couches minces d'oxyde de titane pour filtres optiques." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376074365.

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Azadet, Kameran. "Synthèse et architecture de filtres d'acquisition et de restitution d'images /." Paris : École nationale supérieure des télécommunications, 1994. http://catalogue.bnf.fr/ark:/12148/cb35691427b.

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Dhakad, Rushikesh A. "Active Control of Impulsive Noise using Reference Weighted FxLMS Algorithm." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511869912897366.

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Ramahefarivony, Annick. "Analyse de filtres à cavités couplées par des iris rectangulaires épais." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37609156f.

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Siohan, Pierre. "Contribution à l'étude des méthodes de conception des filtres numériques à réponse impulsionnelle finie et applications au traitement d'images : thèse /." Paris : École nationale supérieure des télécommunications, 1989. http://catalogue.bnf.fr/ark:/12148/cb35057631q.

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Xu, Min. "Antenne acoustique adaptative pour la prise de son /." Paris : École nationale supérieure des télécommunications, 1989. http://catalogue.bnf.fr/ark:/12148/cb350576322.

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Bradáč, Josef. "Aplikační možnosti řiditelného proudového zesilovače." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220619.

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This thesis deals with the application using digitally controlled current amplifiers DACA (Digitally Adjustable Current Amplifer), which was developed at the Department of Telecommunications FEEC in cooperation with ON Semiconductor in 2010. In introduction is decribed the topic of active filters and oscillators. Farther active current components, besides DACA are described current conveyor UCC (Universal Current Conveyor), current amplifier DO-CF (Dual-Output Current Follower), MO-CF (Multiple-Output Current Follower) and FD-CF (Fully Diferential Current Follower) and operational transconduct
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Mueller, Eric. "The Terministic Filter of Security: Realism, Feminism and International Relations Theory." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc3040/.

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This study uses Kenneth Burke's concept of terministic filters to examine what the word security means to two different publics within the academic discipline of international relations. It studies the rhetoric feminist international relations theorists and contrasts their view security with that of realist and neo-realist interpretations of international affairs. This study claims to open up the possibility for studying the rhetoric of emergent movements through the use of dramatistic or terministic screens.
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Wunnava, Sashi Prabha. "Kalman Filtering Approach to Optimize OFDM Data Rate." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc84303/.

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This study is based on applying a non-linear mapping method, here the unscented Kalman filter; to estimate and optimize data rate resulting from the arrival rate having a Poisson distribution in an orthogonal frequency division multiplexing (OFDM) transmission system. OFDM is an emerging multi-carrier modulation scheme. With the growing need for quality of service in wireless communications, it is highly necessary to optimize resources in such a way that the overall performance of the system models should rise while keeping in mind the objective to achieve high data rate and efficient spectral
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