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Solid State Power Amplifier for the L-Band
Pecen, Vojtěch ; Vondra, Vlastimil (referee) ; Kasal, Miroslav (advisor)
The goal of this diploma's thesis is to create a design of a two stages amplifier working in a band reserved for the secondary surveillance radar at the frequency of 1090 MHz. Output power of the amplifier should be 20 W and efficiency should be as high as possible. Because of this the second stage is designed in class C. Contents of this diploma's thesis include a theoretical analysis, simulations of the amplifier parameters, comparison of the Ansys Designer and AWR Microwave Office simulation programs and design of both stages of the amplifier, followed by a comparison of the measured parameters with the simulations.
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Power Amplifier for L Band
Eliáš, Martin ; Pešek, Kamil (referee) ; Urbanec, Tomáš (advisor)
The aim of this thesis is to design a power amplifier in L-band. This thesis describes the high frequency transistor technologies. Furthermore, the communication standard of the amplified signal is described along with the output signal requirements. The design of the amplifier includes modelling of the individual amplifier stages using nonlinear models in the AWR program. The design of the stabilization and matching circuits is included, along with a circuit to guarantee the correct turn-on and turn-off sequence. The designs are converted to printed circuit board and fabricated. For the 2nd and 3rd amplifier stages, engineering drawings of the heat sinks are drawn and used to fabricate them. After implementation, the designs are measured and the measured parameters evaluated.
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Beamforming Circuits For L-Band Antenna
Kalina, Ladislav
This project describes the design of beamforming circuits for L-band antenna. The first part contains designed concept of a phase shifter. Other part consists block scheme of the phase shifter with real components and description of their basic functions. The next part implies theoretical calculation of possible settings. Last part includes realization of phase shifter and automatical measurement of circuit.
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Solid State Power Amplifier for the L-Band
Pecen, Vojtěch ; Vondra, Vlastimil (referee) ; Kasal, Miroslav (advisor)
The goal of this diploma's thesis is to create a design of a two stages amplifier working in a band reserved for the secondary surveillance radar at the frequency of 1090 MHz. Output power of the amplifier should be 20 W and efficiency should be as high as possible. Because of this the second stage is designed in class C. Contents of this diploma's thesis include a theoretical analysis, simulations of the amplifier parameters, comparison of the Ansys Designer and AWR Microwave Office simulation programs and design of both stages of the amplifier, followed by a comparison of the measured parameters with the simulations.
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The Primary Art School in Strakonice
DRÁBKOVÁ, Lucie
Primary art schools enjoy a long tradition in our country. The Primary Art School ``Kochana z Prachové{\crqq} in Strakonice celebrates already the 70th anniversary of its foundation. It is surprising that nobody has attempted to elaborate a comprehensive work concerning its history for the whole period. With respect to the fact that I have been teaching the piano playing here since 2006 and therefore I have become a part of it, I have chosen just the history thereof as the subject of my thesis. The Primary Art School participates in many cultural activities of the town of Strakonice and it is an important educational institution because it provides education to 750 pupils in four subjects - the musical, graphic, dancing and literary-dramatic ones and it prepares talented pupils for the study at secondary schools, colleges and universities focused on arts.
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