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Design of modular sports trophy system
Kučera, Tomáš ; Rajlich, Jan (referee) ; Ondra, Martin (advisor)
Purpose of this bachelor thesis is design of modular system for trophy compilation. Modularity rests in possible usage for all three placements and different sports. System uses perpendicular contact of parts that ensures restriction of movement. Designed units are inspired by geometrical objects. Shape of resulting trophy is limited only by material characteristics and weight of base.
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LNA for the APT signals receiver
Žúrek, Dan ; Urbanec, Tomáš (referee) ; Baran, Ondřej (advisor)
This bachelor thesis is dealing with design, realization and optimization of the LNA (Lownoise amplifier) for receiving of APT signals from the NOAA weather satellites in 137 MHz – 138 MHz frequency band. The first part of this work is aimed on critical parameters of the amplifier and the filter circuits especially on a noise figure and a high selectivity. The next part of this project is about the particular concept and simulation of LNA by using the Ansoft Designer software. The printed circuit board is realized in the Cadsoft Eagle. The final part of this bachelor thesis is dealing with a production of such amplifier together with its measurement and testing in a real operation of receiving APT signals.
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Company's Information System Analysis and Modifications Concept
Zahradník, Martin ; Špatka, Petr (referee) ; Dydowicz, Petr (advisor)
This thesis deals with the analysis and design changes to a specific company information system under real conditions, and is therefore more practically oriented. The information system is studied both from the perspective of the end user, which is the focus, and in terms of operation and implementation of program solutions. The information system is studied as a whole in a broader context, not only in terms of applications (software), but also in terms of the flow of information, storage and organization of data, users, security, hardware, etc. It should serve to the company as a guide for the elimination of inefficient and / or risk areas, thereby helping to improve work productivity and employee satisfaction.
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Smith Chart Visualization Tool
Marek, Martin ; Pokorný, Michal (referee) ; Kadlec, Petr (advisor)
The objective of my bachelor thesis was to create a Smith chart visualization tool in computing environment MATLAB. I created an impedance Smith chart in graphical user interface which delineate parameters of basic line types. Parameters of transmission lines can be defined in the Smith chart as normalized impedance, reflection coefficient, normalized admittance or impedance in combination with line’s characteristic impedance. It is also possible to design simple matching circuits, e.g. with quarter-wave transformer, series stub, parallel stub or matching circuits with lumped elements.
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Low noise amplifier for UHF band
Horký, Stanislav ; Baran, Ondřej (referee) ; Kasal, Miroslav (advisor)
The subject of this bachelor's thesis is description and design of low-noise RF amplifiers. This work is also focused on design and simulations of amplifier in Ansoft Designer software. In this thesis is in detail described design of amplifier ATF 54143, mainly focused on stability, biasing and noise matching. For the needs of RF applications are described a few types of filters, with his design and realization
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Low noise amplifier for UHF band
Horký, Stanislav ; Baran, Ondřej (referee) ; Kasal, Miroslav (advisor)
The subject of this bachelor's thesis is description and design of low-noise RF amplifiers. This work is also focused on design and simulations of amplifier in Ansoft Designer software. In this thesis is in detail described design of amplifier ATF 54143, mainly focused on stability, biasing and noise matching. For the needs of RF applications are described a few types of filters, with his design and realization
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Design of circular polarized antenna for 2.4 GHz
Hase, Michal ; Lukeš, Zbyněk (referee) ; Láčík, Jaroslav (advisor)
In this thesis, I introduce two types of circularly polarized rectangular microstrip antennas at 2.44 GHz. First type has direct fed and the second has two inputs for fed. In first case is used a stub to make the frequency with minimum return loss and equal to the frequency with minimum axial ratio. In second case is use the power splitter to divide the wave in to two lines with phase shift 90° for feeding the patch. In this thesis is described, how to get the best results of Axial Ratio.
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Vehicle Electronic Instrument Cluster
Janhuba, Tomáš ; Drápal, Lubomír (referee) ; Svída, David (advisor)
Bachelor thesis deals with car dashboard. Thesis is about what is the purpose of dashboard, what was its development, what types of dashboard exist or form in which the information is transmitted to the driver. Also it’s about what to focus on and how to do the design. The last part is about my concept of dashboard and about possible innovations.
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SWR and HF power monitor
Gajdušek, Miroslav ; Blansko), (Metra (referee) ; Šebesta, Jiří (advisor)
This work deals with analysis methods continuous measuring systems for measurement standing wave ratio and high frequency power. Reflectometr, provision measuring standing wawe ratio, works in range frequence VHF (145 MHz, 443 MHz), for this width working frequence is used construction reflectometer with directive lead. Measurer HF power works into range 1kW. Further is in work go through problems communications bus for transmission data from unit monitor SWR a HF power into score modulus. With regard to high frequency interference is choice serial communication RS-485 , which is immune against disturbance. Further is designed evaluation unit MASTER, unit SLAVE and modules for measurement power and SWR. In finish is build up the firmware for units.
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