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Dissertations / Theses on the topic 'Low Pass Filter (LPF)'

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Published: 4 June 2021
Last updated: 25 July 2025

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1

Li, Heli. "RF LOW PASS FILTER DESIGN AND FABRICATION USING INTEGRATED PASSIVE DEVICE TECHNOLOGY." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4340.

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In this thesis, the whole process of design a low pass filter (LPF) for the wireless communication application has been presented. Integrated passive device technology based on GaAs substrate has been utilized to make the LPF. Schematic simulation and electromagnetic simulations are extensively used in the design process. EM simulation is used in the selection of layout design and processing parameters for design optimization of both the inductors and IPD harmonic filters. The effective use of EM simulation enables us to realize the successful development of high performance harmonic filters.
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2

Nagarajan, N. "Autonomous Orbit Estimation For Near Earth Satellites Using Horizon Scanners." Thesis, Indian Institute of Science, 1994. https://etd.iisc.ac.in/handle/2005/155.

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Autonomous navigation is the determination of satellites position and velocity vectors onboard the satellite, using the measurements available onboard. The orbital information of a satellite needs to be obtained to support different house keeping operations such as routine tracking for health monitoring, payload data processing and annotation, orbit manoeuver planning, and prediction of intrusion in various sensors' field of view by celestial bodies like Sun, Moon etc. Determination of the satellites orbital parameters is done in a number of ways using a variety of measurements. These measurem
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Nagarajan, N. "Autonomous Orbit Estimation For Near Earth Satellites Using Horizon Scanners." Thesis, Indian Institute of Science, 1994. http://hdl.handle.net/2005/155.

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Autonomous navigation is the determination of satellites position and velocity vectors onboard the satellite, using the measurements available onboard. The orbital information of a satellite needs to be obtained to support different house keeping operations such as routine tracking for health monitoring, payload data processing and annotation, orbit manoeuver planning, and prediction of intrusion in various sensors' field of view by celestial bodies like Sun, Moon etc. Determination of the satellites orbital parameters is done in a number of ways using a variety of measurements. These measurem
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4

Lane, Roger Benton 1951. "Alternate passive low pass filter realizations." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/291743.

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The objective of this thesis investigation is to find by computer optimization methods alternate passive realizations for the double resistance terminated low pass Butterworth filters for the third through the tenth order. A second goal is to explain why they exist and to explore other means to derive them. The iterative optimization search performed uses the GOSPEL computer program. New realizations found by this method are presented. Aspects of error and accuracy are discussed as well as a figure of merit test which confirms the validity of the results. Alternate filter realizations produced
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Talej, Elie N. "A VLSI design of a finite impulse response low-pass digital filter." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182871591.

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6

Csipkes, Gabor-Laszlo. "Integrated realizations of reconfigurable low pass and band pass filters for wide band multi-mode receivers." Doctoral thesis, [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=979677483.

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Csipkes, Gabor-Laszlo. "Integrated realizations of reconfigurable low pass and band pass filters for wide band multi-mode receivers." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1145345696511-52655.

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With the explosive development of wireless communication systems the specifications of the supporting hardware platforms have become more and more demanding. According to the long term goals of the industry, future communications systems should integrate a wide variety of standards. This leads to the idea of software defined radio, implemented on fully reconfigurable hardware.Among other reconfigurable hardware blocks, suitable for the software radio concept, an outstanding importance belongs to the reconfigurable filters that are responsible for the selectivity of the system. The problematic
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Sánchez, Ripoll Juan Pedro. "Design of a sharp response low-pass filter : through comparison of microwave design software." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-12365.

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The aim of this thesis is to do a research about three microwave design software packages and evaluate them with the purpose of getting the sharpest filter as possible and also know which one is more efficient in this task. In order to achieve this purpose we designed, simulated and tried to manufacture the same low-pass filter (using microstrip lines) in different software. This way we are able to compare features as the S-parameters of the filters, the possibilities they give us, how easy to use they are, how long takes us to run a simulation, how much deviation they have in the simulations
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Chabbi, Charef. "VLSI NMOS hardware design of a linear phase FIR low pass digital filter." Ohio University / OhioLINK, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1183749814.

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10

Abbasi, Muneeb Mehmood, and Mohammad Abdul Jabbar. "Design and Performance Analysis of Low-Noise Amplifier with Band-Pass Filter for 2.4-2.5 GHz." Thesis, Linköpings universitet, Fysik och elektroteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91326.

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Low power wireless electronics is becoming more popular due to durability, portability and small dimension. Especially, electronic devices in instruments, scientific and medical (ISM) band is convenient from the spectrum regulations and technology availability point of view. In the communication engineering society, to make a robust transceiver is always a matter of challenges for the better performance. However, in this thesis work, a new approach of design and performance analysis of Low-Noise Amplifier with Band-Pass filter is performed at 2.45 GHz under the communication electronics resear
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Law, Yiu Kui. "Design and Testing of Off-The-Shelf Electronic Components for an Acoustic Emission Structural Health Monitoring System Using Piezoelectric Sensors." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34477.

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The safety concern of aging aircraft is a rising issue in terms of both safety and cost. An aircraft structure failure during flight is unacceptable. A method needs to be developed and standardized to test the integrity of both commercial and military aircrafts. The current method to test the structure of an aircraft requires the aircraft to be taken out of service for inspection; this is costly due to the inspection required to be performed and the lost use from downtime. A novice idea of an on-site structural health monitoring (SHM) system has been proposed to test the integrity of aircr
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Kumar, Bhunesh. "Design of Harmonic Filters for Renewable Energy Applications." Thesis, Högskolan på Gotland, Institutionen för kultur, energi och miljö, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-1862.

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Harmonics are created by non-linear devices connected to the power system. Power system harmonics are multiples of the fundamental power system frequency and these harmonic frequencies can create distorted voltages and currents. Distortion of voltages and currents can affect the power system adversely causing power quality problems. Therefore, estimation of harmonics is of high importance for efficiency of the power system network. The problem of harmonic loss evaluation is of growing importance for renewable power system industry by impacting the operating costs and the useful life of the sys
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13

Leu, Ching-Shan. "Improved Forward Topologies for DC-DC applications with Built-in Input Filter." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/26073.

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Among PWM power conversion topologies, the single-switch forward topology is the one that has been most widely used for decades. Its popularity has been based on many factors, including its low cost, circuit simplicity and high efficiency. However, several issues need to be addressed when using the forward converter such as the core reset, the voltage spikes caused by the transformer leakage inductance, and the pulsating input current waveform. The transformer is driven in a unidirectional fashion in the forward converter; a tertiary forward converter (TFC) is an example of this. Therefore,
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Jonasson, Anders. "Konstruktion och utvärdering av Current Conveyors." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1976.

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<p>Normally the operational amplifier is used as a component in active filter design. The goal for future components in filter design is large bandwith and the use of low supply voltages. The use of current-mode instead of voltage-mode circuits gets a step closer to the required performance. A component that use current as the signal conveying part is the current conveyor. In this report a comparative study between two current conveyor structures of second generation (CCII) is performed. The most suited is later implemented and simulated using the CMOS process AMS.C035. The component is also t
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Pavlikovský, Vladislav. "Využití reverberátorů pro úpravu akustiky prostoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220198.

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This diploma thesis deals with adjusting the reverberation time of enclosed spaces. It is divided into two thematic areas. The first thematic area deals with active systems that adjust the reverberation time, with a stronger focus on usage of reverberators to simulate secondary spaces. The second thematic area is the implementation of reverberators and their fundamental building blocks in Matlab.
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16

Jeleček, Jiří. "Pseudo-diferenční kmitočtové filtry vyššího řádu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-401954.

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This Master's thesis deals with pseudo-differential frequency higher order filters working in voltage mode. The thesis deals with the description of frequency filters, their types and applications. Follows an analysis of differential and pseudo-differential transmissions. Next part contains a description of used active elements (conveyors) at thesis (CCII, DVCC, DDCC, UCC). In the last part the thesis is devoted to the own design of the pseudo-differential filter. Design functionality is verified by experimental simulation.
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17

Kufa, Martin. "Numerická syntéza filtrujících antén." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-233677.

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Dizertační práce je zaměřena na kompletní metodiku návrhu tří a čtyř prvkových flíčkových anténních řad, které neobsahují žádné filtrující části a přesto se chovají jako filtrující antény (filtény). Návrhová metodika kombinuje přístup pro návrh filtrů s přístupem pro anténní řady a zahrnuje tvarování frekvenčních odezev činitele odrazu a normovaného realizovaného zisku. Směr hlavního laloku přes pracovní pásmo je kontrolován také. S cílem kontrolovat tvary uvedených charakteristik, nové gi koeficienty jsou představeny pro návrh filtrujících anténních řad. Návrhová metodika byla ověřena na tří
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18

Long, Zeyu. "Introduction of the Debye media to the filtered finite-difference time-domain method with complex-frequency-shifted perfectly matched layer absorbing boundary conditions." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/introduction-of-the-debye-media-to-the-filtered-finitedifference-timedomain-method-with-complexfrequencyshifted-perfectly-matched-layer-absorbing-boundary-conditions(441271dc-d4ea-4664-82e6-90bf93f5c2b7).html.

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The finite-difference time-domain (FDTD) method is one of most widely used computational electromagnetics (CEM) methods to solve the Maxwell's equations for modern engineering problems. In biomedical applications, like the microwave imaging for early disease detection and treatment, the human tissues are considered as lossy and dispersive materials. The most popular model to describe the material properties of human body is the Debye model. In order to simulate the computational domain as an open region for biomedical applications, the complex-frequency-shifted perfectly matched layers (CFS-PM
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19

Best, Eric A. "Stability assessment of nonlinear systems using the lyapunov exponent." Ohio University / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1175019061.

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20

Třeček, Stanislav. "Aktivní elektrické filtry na bázi obvodů se spínanými kapacitory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217796.

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This thesis deals with concept of universal frequency filter by application of a switched-capacitor functional block. The concept is based on the theory of switched-capacitor circuits and the theory of a design of classical frequency filters. The printed circuit board was designed based on the filter connection developed by using a software Eagle. The filter was implemented as a laboratory product. This product has been revitalized and the frequency response of all types of filters has been measured. The measured parameters were compared with the parameters set out in the technical documentati
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21

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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22

Sládok, Ondřej. "Diferenční a pseudodiferenční kmitočtové filtry." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241951.

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This thesis deals with fully differential and pseudo-differential frequency filters. Significant emphasis is placed on the characteristics of common-mode signal. Further, the text deals with the design issue of fully-differential structure and transformation of non-differential to pseudo-differential structures. In the thesis one non-differential structure, one fully-differential and three pseudo-differential structures are proposed, one of them working in current mode. The thesis also describes the analysis from the perspective of non-ideal properties of the active element of two circuit solu
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Johansson, Viktor. "A sensor orientation and signal preprocessing study of a personal fall detection algorithm." Thesis, Högskolan Kristianstad, Fakulteten för naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-21375.

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This study investigates if a smartphones orientation in the pocket affects the result of a decision tree model trained with data from personal falls, and also how a low-pass filter affects these results. A comparison is made between the results gathered from this study, compared to previous studies and products within the field. The data was gathered using a smartphone application and was later split up to get datasets for all the different orientations of the smartphone. Before training the models, the data was processed through a low pass filter. Results showed that low pass filtered signals
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24

Ould, Amer Khadidja. "Prétraitements des images sous-marines basés sur la polarisation et le filtrage fréquentiel : application offshore Enhancing underwater optical imaging by using a low-pass polarization filter, in Optics Express 27(2), 2019." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0049.

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L'étude du milieu sous-marin nécessite des avancées technologiques importantes notamment en ce qui concerne le développement des véhicules sous-marins autonomes et en particulier, leurs capteurs de perception. Le travail de cette thèse avait pour objectif d'apporter des solutions permettant d'améliorer la qualité des images sous-marines dans le but de promouvoir l'emploi des robots sous-marins autonomes. La rapidité de calcul est un point très essentiel, car les robots autonomes sont limités par les contraintes d'énergie, la capacité de calcul et de stockage. Dans ce contexte, une méthode rapi
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Camlica, Fahri Bugra. "Demonstration Of A Stabilized Hovering Platform For Undergraduate Laboratory." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605772/index.pdf.

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This research work covers the design, manufacture and testing of an unmanned aerial vehicle for the purpose of testing various control systems by undergraduate students in the laboratory environment. The aerial vehicle under consideration is a four-rotor propeller powered. Aluminum rod based mechanical structure is preferred. The stabilization of the hovering vehicle in its rotational axes in the air and navigation about the yaw axis are the accomplished goals of this study. The aerial vehicle is run in real time by using Matlab 6.5 Software&rsquo<br>s xPc module. The linear quadratic regulato
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Štěpánek, Michal. "Návrh diplexeru na bázi koaxiálních rezonátorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219960.

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This thesis deals with the analysis of coaxial cavity filters and synthesis of generic topology of these filters. Transfer function comes out the synthesis, which is based on low-pass prototype and similarity with real structure. The next aim of this thesis is to build the basic software for coaxial cavity filters synthesis from engaged characteristic parameters of the filter. This work also includes the analysis of coupling matrix synthesis based on transfer function, where we can use direct coupling or cross-coupling between resonators. The last point is focused on the diplexer filter based
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Silveira, Augusto Wohlgemuth Fleury Veloso da. "Estudo comparativo de técnicas de estimativa do fluxo estatórico de MIT." Universidade Federal de Uberlândia, 2007. https://repositorio.ufu.br/handle/123456789/14606.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This work shows and compares three different flux estimator algorithms developed for use in high-performance sensorless ac motor drives. The first algorithm uses a low pass filter with a very low cut off frequency to integrate the back electromotive force (emf). The second one uses a high pass filter to remove the offset present in the signal before it s integration. The third algorithm uses current and voltage model to estimate the flux of induction motor. These algorithms can be used to accurately measure the motor flux including
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28

Dvořák, Jan. "Řiditelné analogové elektronické obvody neceločíselného řádu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-433474.

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Disertační práce se zabývá syntézou a analýzou nových obvodových struktur neceločíselného (fraktálního) řádu s řiditelnými parametry. Hlavní cíl této práce je návrh nových řešení filtračních struktur fraktálního řádu v proudovém módu, emulátorů prvků fraktálního řádu a také oscilátorů. Práce obsahuje návrh tří emulátorů pasivního prvku fraktálního řádu, tři filtrační struktury a dva oscilátory navržené na základě využití pasivního prvku fraktálního řádu v jejich obvodové struktuře a dvě obecné koncepce filtrů fraktálního řádu založené na využití aproximace přenosové funkce fraktálního řádu. Na
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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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Bragina, Tatiana. "Návrh laditelného kmitočtového filtru 2. řádu se spínanými kapacitory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221041.

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Thesis describes analog filters topologies with capability of tuning of the main parameters and the MOSFET-C and switched-capacitor filters are described. With focus to linearity and maximal tuning range optimal topology have been chosen. In work the issue of analog switch design is described and is solved. Design of switched-capacitor low-pass Sallen-key filter in Cadence software was made and simulation results are presented.
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Novotný, Jakub. "Behaviorální modely aktivních prvků s nezávislým víceparametrovým elektronickým řízením." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241053.

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This thesis is focused on behavioral modelling of active elements with independent multi-parameter electronic control using comercially available components. In a first part of the thesis, CVDIBA, CVDOBA, CVCC and OC elements are discussed. The functionality is verified by simulations using OrCAD PSpice. Used components are diamond transistor OPA860, variable gain amplifier LMH6505, differencing amplifier AD830, low distortion differential driver AD8138, current conveyor EL2082 and current mode four quadrant multiplier EL4083. Four active elements are further built on PCB and measured. Some ap
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Jašek, František. "Návrh nových aktivních filtrů pomocí grafů signálových toků." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218236.

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This master’s thesis describes the design of the frequency filters by the help of the graph of the signal flows. There are defined by modern components like GVC (Generalized Voltage Conveyor), GCC (Generalized Current Conveyor), CF (Current Follower), DO-CF (Dual-Output Current Follower), OTA (Operational Transconductance Amplifier), BOTA (Ballanced Operational Transconductance Amplifier) and CFTA (Current Follower Transconductance Amplifier), the graphs of the signal flows, which describe their activity in the thesis. In the other part of the thesis is illustrated the procedure of the design
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Baran, Ondřej. "Studium vlivů frekvenčních nestabilit oscilátorů v družicových komunikačních systémech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-233547.

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The dissertation thesis deals with a study of an influence of a simultaneous incidence of an additive thermal noise and a multiplicative phase noise on the useful signal transmission in narrowband satellite communication systems. While the additive thermal noise affects the useful signal only on the receiver side of the communication system, the multiplicative phase noise is produced in all system oscillators. One investigates how the receiver filter bandwidth reduction takes effect on the influence of individual noise types. The thesis is divided into four units. The first one (chapters 4 and
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Šimoník, Petr. "Měřič odstupu signálu od šumu obrazových signálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217681.

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The diplomma thesis is dealing with possibilities of Signal to noise ratio measurement by method, which is based on direct measurement. It is chosen the most suitable method – signal and noise separation to two different parallel signal branches, where is measured signal strength in one branch and root mean square value in the other. The thesis is consisted of a concept of detail block scheme of Signal to noise ratio meter, which was designed in terms of theoretical knowledge. Particular functional blocks were circuit-designed, the active and passive parts were chosen and their function were d
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Benites, Ayala Ivan Alejandro. "Nízkošumový zesilovač pro pásmo S." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400532.

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This master's thesis presents the design and the realization of a low noise amplifier (LNA) for the S band of radio frequency spectrum from 2.3 GHz to 2.4 GHz. This thesis is mainly focused on stability and impedance matching networks study. Ansoft Designer and ANSYS HFSS programs are used for this design to simulate the LNA. Different low noise devices are simulated in order to find the best results for the final design. Moreover, a coaxial cavity resonator is designed in the input of the LNA and works as a band pass filter. Finally, the LNA is fabricated and its properties compared with the
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Balbino, Isaú Macêdo. "Análise de impactos de um sistema fotovoltaico conectado à rede em Mossoró/RN." Universidade Federal Rural do Semi-Árido, 2017. http://bdtd.ufersa.edu.br:80/tede/handle/tede/824.

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Slezák, Jakub. "Analogový vstupní díl pro softwarový přijímač." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219843.

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This thesis deals with a theoretical analysis of the basic parameters of receivers, input circuit architecture and signal digitization. According to the specified assignment it is outlined block scheme of front end for software receiver with specified components and the total bilance is calculated. Individual parts of the system are designed and realized. This is a set of four input filters for bandwidths: short waves up to 30 MHz, 87,5-108 MHz, 144-148 MHz and 174-230 MHz. The main point of design is a circuit containing a low-noise amplifiers, switches, and two amplifiers with adjustable amp
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Harman, Ján. "Systém pro řízení intenzity osvětlení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218909.

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The aim of my master’s thesis is a system for control of the light intensity. It is electronic equipment which controls the intensity of the light circuits based on settings and input signals. This equipment could work on single-phase systems or multiphase systems. The equipment is controlled by the signal DMX-512 which is a standard for the control of lighting technologies. The set up of this equipment is based on a personal computer or in a limited form by a small connected display.
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39

Štaffa, Jan. "Jednofázový pulzní měnič DC/AC s digitálním řízením." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217881.

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This work is focused on single phase inverters, which are used for the conversion of the direct current to the alternating current and are nowdays used especially in systems of back-up power supply. The specific aim of this work is implementation of design hight power circuit of inverter include calculation of control algorithm. It describes the complete solution of power circuit. Next step is a analysis of problems concerning the digital control with help of signal processor which is used for solution of regulator structure. Check of the design and checkout of control algorithm is made in the
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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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Bečková, Zuzana. "Návrh AD převodníku pro senzorové aplikace." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242185.

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Diplomová práce obsahuje stručný teoretický základ pro designéra/ku A/D převodníku v technologii CMOS a přehled architektur A/D převodníků používaných v automobilovém průmyslu. Volba vhodné architektury pro konkrétní aplikaci byla zásadním úkolem zpra- covaným v semestrálním projektu předcházejícím tuto práci a je rovněž součástí této práce. Analýza v Matlabu, ze které by mělo vyplynout, je-li třeba zahrnout do architek- tury podblok Sample and Hold, je také součástí práce. Klíčovou částí práce je dokumen- tace návrhu jednotlivých podbloků A/D převodníku – operačního zesilovače, kompará- toru
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42

Yang, Dong Hua, and 楊東華. "Photonic Bandgap (PBGs) Assisted Low Pass Filters (LPFs) Design." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/33499578620651737486.

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碩士<br>長庚大學<br>電子工程學研究所<br>97<br>In this research，two different non-uniform dumbbell-shaped Photonic Bandgap (PBG) Structures (Chebyshev distributed and Chebyshev distributed Chirp) are used for low pass filters design. The designs are using microstrip lines and the frequencies are from 0 to 16 GHz. The proposed designs and measurement results are compared with most recent results from literature and show excellent performance in terms of novel pattern shapes and amplitude and space modulation effects on S-Parameters. It is suggested that the varying filling factor (FF) of the periodic str
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Chen, Mei-Show, and 陳美秀. "Multilayered-PWB Low-pass Filter for CATV." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/36635410175619388468.

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碩士<br>國立交通大學<br>電信研究所<br>83<br>The 550-MHz low-pass filters can be used in the headend of transmitting control-center and the set-top tuners. There are two types of such filters. One is lumped filters and the other is ceramic multilayer distributed filters. Lumped filters are usually constructed using parallel-plate chip capacitors and air-wound inductors soldered into a small housing. Skilled manual labor is required o build and tune such a type of filters. Multilayer ceramic distributed
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Tang, En-Hao, and 湯恩豪. "Design and Application of Low-pass filter." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/98861173774825879706.

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碩士<br>國立雲林科技大學<br>電機工程系<br>103<br>This thesis proposes two types of low-pass filters (LPFs), one being an adjustable LPF designed for some particular industrial need and the other being an ordinary LPF designed for TV applications. The adjustable cut-off frequency range of the former was set within 23-36 MHz; for validation, another one having the adjustable cut-off frequency range of 700-900 MHz for long-term evolution (LTE) applications was also designed and fabricated. With the fixed cut-off frequency set to be 700 MHz, the latter was specially designed to be embedded in a VHF/UHF filter de
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Chen, Chieh-Ming, and 陳傑明. "Refinement to make optical low pass filter." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/21860145195324799168.

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碩士<br>國立中央大學<br>機械工程研究所碩士在職專班<br>94<br>Summary These years, because of the high growth speed of digital products, the demand of OLPF filter is effect to increase very fast. This product is very difficult to manufacture that need many manpower to complete. This investigation focuses multi-quartz glued at the last production course, is to find a method to improve the manufacturing device, increase the efficiency and, decreasing the defect rate from man-made process. In this research, the design equipment has the automatic the gum machine and UV curing equipment. Understand a production process n
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NAND, MANISHA. "HIGH POWER HANDLING TUNABLE LOW PASS FILTER." Thesis, 2017. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16016.

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The goal of high-e ciency power ampli er operation from 30-520 MHz has been addressed in the current design by the use of tunable reactive elements in the out- put resonant network. Filtering at the target harmonic frequencies will be achieved by maintaining a xed inductance and utilizing a PIN diode switching circuit to selectively introduce di erent capacitance values, presenting the frequency-speci c short and open circuits that will allow for power ampli er operation at the de- sired fundamental frequency. This approach allows the power ampli er to cover several octaves or more, ac
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Guo, Zhe-Yu, and 郭哲宇. "OTRA-Based Voltage Mode Low-Pass,Band-Pass, High-Pass, and Band-Reject Biquadratic Filter Structure." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/sdf5wb.

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碩士<br>中原大學<br>電機工程研究所<br>98<br>Abstract This theory realized a voltage-mode second-order Butterworth filter contains low-pass, band-pass, high-pass and notch in the high frequency. In this circuit design, using OTRA to be the main active components that is the dual element of OTA . Operational Trans-Resistance Amplifier (Abbreviation: OTRA) have a Characteristic is virtual grounded at input extremities, it can reduce the parasitic effect for achieve the high accurate output signal. Using node analysis design method, we propose two Operational Trans-Resistance Amplifier and three capacitors, an
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Tai, Yung-hsen, and 戴詠軒. "Design of the Low-pass、Band-pass and high-pass Filter Structures using Adjustable Active elements." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/78452746488142436199.

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碩士<br>中原大學<br>電機工程研究所<br>94<br>It is worthy of research to do the analogue circuit design using Operational Transconductance Amplifiers (OTAs) and Capacitors (Cs) because an OTA is equivalent to both an active element and a resistor leading to a more condensed integrated circuit without resistors ,and because the equivalent resistor value can be electronically tuned varying the bias current. Due to the difficulty to precisely fabricate the capacitance in integrated circuits, it becomes an important research work to find a tunable element for the replacement of the capacitor used to realize
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Shen, Jason, and 沈哲生. "A Compact Distributed Low-Pass Filter with Wide Stopband." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/60766135185673122385.

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碩士<br>國立交通大學<br>電信工程系<br>89<br>A distributed parallel resonance circuit is used to design a very compact low-pass filter with cutoff frequency 0.5GHz. The circuit has a section of transmission line shunt with an interdigital capacitor connecting with two low-impedance lines at both of its terminals. A finite transmission zero can be generated near the passband edge so that the filter has a sharp transition response. In addition, the stopband can be extended to more than 6GHz by properly choosing the structural parameters of the circuit. The measured responses match with the simulation quite we
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Lin, Chan-Hui, and 林展輝. "57Hz Low Pass Elliptic Filter Circuit Design of ECG." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/99561174078972319530.

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碩士<br>中原大學<br>電機工程研究所<br>99<br>Abstract The precision of a output signal, making sure the signal is in or between the programed frequency band, is very important and top priority in analog filter circuit design field. To catch the subtle signal such as human body’s physiology by cardiograph, the precision is very important but often affected by test environment and facility itself. Therefore, the precision of the filter design is a crucial topic for research. OTA (Operational Transconductaance Amplifier) is best candidate for analog filter circuit design identified by savants recently. The mai
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