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Measurement of DVB-T set top boxes selected parameters
Hrazděra, Tomáš ; Kratochvíl, Tomáš (referee) ; Štukavec, Radim (advisor)
This project treats of the system of the terrestrial digital TV broadcasting DVB-T. It explains the principles of source and channel encoding and the channel modulation. The analysis of parameters defined by the recommendation ETSI TR 101 290 for the purpose of measuring of the parameters of the digital TV broadcasting (set top boxes) is elaborated. Further it describes the functions of the set top box itself and executes the analysis of chosen receivers including the description of their typology. On its base the measurable parameters of commercially accessible receivers, which underwent the tests were chosen. The results are elaborated in the tabular and graphic forms, including the analysis of their influence on the quality of the received broadcast.
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RF Power Amplifiers
Hrazděra, Tomáš ; Hubík,, Vladimír (referee) ; Šebesta, Jiří (advisor)
This work deals with high-frequency power amplifiers. In the theoretical part are briefly summarized the general characteristics and properties of particular working classes of amplifiers focusing on their efficiency. The next section is aimed on design of high-frequency power amplifier for 1296MHz band and its individual components. In this part is desribed design of hybrid combiners - splitters, directional couplers of the coupled lines, amplifiers with RA18H1213G module and power amplifier with transistor BLV958. The work also includes the results of simulations of designed circuit, realization procedure and the measured parameters of manufactured components. In conclusion of this work the theoretical and measured values are compared.
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RF Power Amplifiers
Hrazděra, Tomáš ; Hubík,, Vladimír (referee) ; Šebesta, Jiří (advisor)
This work deals with high-frequency power amplifiers. In the theoretical part are briefly summarized the general characteristics and properties of particular working classes of amplifiers focusing on their efficiency. The next section is aimed on design of high-frequency power amplifier for 1296MHz band and its individual components. In this part is desribed design of hybrid combiners - splitters, directional couplers of the coupled lines, amplifiers with RA18H1213G module and power amplifier with transistor BLV958. The work also includes the results of simulations of designed circuit, realization procedure and the measured parameters of manufactured components. In conclusion of this work the theoretical and measured values are compared.
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|
|
Measurement of DVB-T set top boxes selected parameters
Hrazděra, Tomáš ; Kratochvíl, Tomáš (referee) ; Štukavec, Radim (advisor)
This project treats of the system of the terrestrial digital TV broadcasting DVB-T. It explains the principles of source and channel encoding and the channel modulation. The analysis of parameters defined by the recommendation ETSI TR 101 290 for the purpose of measuring of the parameters of the digital TV broadcasting (set top boxes) is elaborated. Further it describes the functions of the set top box itself and executes the analysis of chosen receivers including the description of their typology. On its base the measurable parameters of commercially accessible receivers, which underwent the tests were chosen. The results are elaborated in the tabular and graphic forms, including the analysis of their influence on the quality of the received broadcast.
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