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Dual band power divider for GSM(900/1800)
Elfmark, Zdeněk ; Fiala, Pavel (referee) ; Šporik, Vladimír (advisor)
he work deals with different types of Wilkinson Power Divider suitable for band GSM (900/1800). In the thesis is talking about three types and contains the brief descriptions of their functions. It is mentioned their connection and the most important components of each types. All dividers are presented by form of simulation. The aim of this thesis is design and realizes a dual band Wilkinson Power Divider, using planar or SMD technology.
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Antenna system for wireless microphones
Bartoš, Adam ; Lukeš, Zbyněk (referee) ; Láčík, Jaroslav (advisor)
Master's thesis deals with the design of an antenna system for wireless sound transmission used mainly in professional sound reinforcement. The introductory part deals generally with wireless microphones, frequency bands used and proven antenna types. Next, this work deals with signal distribution that is realized using the antenna splitter. The antenna parts is focused on easy production and real usage, therefore were selected antennas with appropriate properties suitable for small series production. This thesis includes simulation of each device, their real construction design and measurements of built prototypes and final products. All three produced devices – the rack splitter, /4 antenna and Helix antenna are fully working, achieve good parameters and are ready for further manufacturing and easy modifications in case of frequency band change requirement. The conclusion includes an overall assessment of the results achieved.
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Microwave transverter for 5 760 MHz to 146 MHz
Šustr, Jan ; Šnajdr, Václav (referee) ; Lukeš, Zbyněk (advisor)
This work deals with a design of the microwave transverter for 5 760 MHz to 146 MHz. It is divided to a few parts. The first one is focused to design of the local oscillator which generates the signal at frequency f = 116.9583MHz. The oscillator is designed like a crystal oscillator. Its output signal is multiplied and amplified in a second part. The next parts deal with design of the band pass filters. There I chose the design of the filters and did the measurements. The microwave receiver and transmitter circuits are designed with the modern monolithic circuits. The main job of this part is to design low noise amplifier and the power amplifier. At the end of this work I do the measurements and the comparison with the simulations.
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Antenna system for wireless microphones
Bartoš, Adam ; Lukeš, Zbyněk (referee) ; Láčík, Jaroslav (advisor)
Master's thesis deals with the design of an antenna system for wireless sound transmission used mainly in professional sound reinforcement. The introductory part deals generally with wireless microphones, frequency bands used and proven antenna types. Next, this work deals with signal distribution that is realized using the antenna splitter. The antenna parts is focused on easy production and real usage, therefore were selected antennas with appropriate properties suitable for small series production. This thesis includes simulation of each device, their real construction design and measurements of built prototypes and final products. All three produced devices – the rack splitter, /4 antenna and Helix antenna are fully working, achieve good parameters and are ready for further manufacturing and easy modifications in case of frequency band change requirement. The conclusion includes an overall assessment of the results achieved.
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|
|
Dual band power divider for GSM(900/1800)
Elfmark, Zdeněk ; Fiala, Pavel (referee) ; Šporik, Vladimír (advisor)
he work deals with different types of Wilkinson Power Divider suitable for band GSM (900/1800). In the thesis is talking about three types and contains the brief descriptions of their functions. It is mentioned their connection and the most important components of each types. All dividers are presented by form of simulation. The aim of this thesis is design and realizes a dual band Wilkinson Power Divider, using planar or SMD technology.
|
|
|
Microwave transverter for 5 760 MHz to 146 MHz
Šustr, Jan ; Šnajdr, Václav (referee) ; Lukeš, Zbyněk (advisor)
This work deals with a design of the microwave transverter for 5 760 MHz to 146 MHz. It is divided to a few parts. The first one is focused to design of the local oscillator which generates the signal at frequency f = 116.9583MHz. The oscillator is designed like a crystal oscillator. Its output signal is multiplied and amplified in a second part. The next parts deal with design of the band pass filters. There I chose the design of the filters and did the measurements. The microwave receiver and transmitter circuits are designed with the modern monolithic circuits. The main job of this part is to design low noise amplifier and the power amplifier. At the end of this work I do the measurements and the comparison with the simulations.
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