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Antenna array to determine positions of airplanes
Zelenka, Pavel ; Pokorný, Michal (referee) ; Raida, Zbyněk (advisor)
The project is aimed to design an antenna array for an aircraft positioning system at an airport. The system operates at frequencies 1030 MHz and 1090 MHz. The antenna is also used by the DME/TACAN system operating in frequency range from 1025 MHz to 1150 MHz. The required impedance bandwidth of the antenna array is 125 MHz, i.ee from 1025 MHz to 1150 MHz. The theoretical part of the thesis analyses properties of different patch antennas and discusses the possibility of extending the impedance bandwidth. The practical part is focused on the development of the numerical model of the broadband stacked patch antennas. In addition, properties of the 3-element and 4-element antenna array are compared. At the end, results of the thesis are summarized.
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Human brain and its modeling
Zelenka, Pavel ; Koudelka, Vlastimil (referee) ; Raida, Zbyněk (advisor)
The project deals with the development of a computer model of human brain. The model is used in the simulation program CST STUDIO SUITE 2015 to show the distribution of electromagnetic waves. The outputs of simulations should help us with a better understanding of electromagnetic field behavior inside the brain. In real life, the model will be used for the verification of methods localizing source currents in the brain.
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Human Brain And It’S Modeling
Zelenka, Pavel
The project deals with the development of a computer model of human brain. The model is used in the simulation program CST STUDIO SUITE 2015 to show the distribution of electromagnetic waves. The outputs of simulations should help us with a better understanding of electromagnetic field behavior inside the brain. In real life, the model will be used for the verification of methods localizing source currents in the brain.
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Antenna array to determine positions of airplanes
Zelenka, Pavel ; Pokorný, Michal (referee) ; Raida, Zbyněk (advisor)
The project is aimed to design an antenna array for an aircraft positioning system at an airport. The system operates at frequencies 1030 MHz and 1090 MHz. The antenna is also used by the DME/TACAN system operating in frequency range from 1025 MHz to 1150 MHz. The required impedance bandwidth of the antenna array is 125 MHz, i.ee from 1025 MHz to 1150 MHz. The theoretical part of the thesis analyses properties of different patch antennas and discusses the possibility of extending the impedance bandwidth. The practical part is focused on the development of the numerical model of the broadband stacked patch antennas. In addition, properties of the 3-element and 4-element antenna array are compared. At the end, results of the thesis are summarized.
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Human brain and its modeling
Zelenka, Pavel ; Koudelka, Vlastimil (referee) ; Raida, Zbyněk (advisor)
The project deals with the development of a computer model of human brain. The model is used in the simulation program CST STUDIO SUITE 2015 to show the distribution of electromagnetic waves. The outputs of simulations should help us with a better understanding of electromagnetic field behavior inside the brain. In real life, the model will be used for the verification of methods localizing source currents in the brain.
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The design of plastic parts for presure valve filter
Maliňák, Petr ; Zelenka, Pavel (referee) ; Knoflíček, Radek (advisor)
The design of plastic parts for presure valve filter (Reverse rinsing filter combination with pressure reducing valve. Fine filter and rotary connector flange for installation in horizontal or vertical pipe work). Optimization of fixture of existing device Additional function record of cleaning filter (date rocord) Optimization of easy makeability Design of concept of filter base on study from external company Description of function of device Proposal of design changes of selected components Creation of 3D model and drawings of selected components Stress – strain analysis in Pro/Mechanica Simulation of molding process with using Plastic adviser tool Basic calculation of hydraulic mechanism
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The use of maize (Zea mays) for non-food purposes
ZELENKA, Pavel
The intention of the bachelor thesis was to write a summary about the use of maize like a renewable resource, especially for the production of heat, electric energy and biofuels. The thesis is developed in the form of literary glossary topic. The use of agricultural crops in the energy sector and industry is very current. It offers possibilities to partially replace fossil fuels and thus not only reduce greenhouse gas emissions, but also the dependence on oil, coal and natural gas. In this way, we can solve the problems of the utilization of agricultural land referred to a standstill.
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