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UHF band front-end of quadrature receiver
Tiller, Jakub ; Špaček, Jiří (referee) ; Kasal, Miroslav (advisor)
The object of this master's thessis is study and description of RF circuits, which are used for receiveing. This work is also aimed to design this circuits and their simulation in Ansoft Designer software. Focus is placed to the standard parameters of receiving technology. The description of amplifier design is presented in this work. Parameters of this amplifier are optimalized to low noise figure. Frequency multiplier designs are included in this project.
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Radio-frequency mixer
Kolář, Jan ; Urbanec, Tomáš (referee) ; Dřínovský, Jiří (advisor)
This bachelor's thesis is aimed to describe main parameters of mixers and principle of their measurement. There are presented devices and methods by whitch mixers can be measured. There are mentioned typical values of these parameters. The realisations of mixers are also described in this bachelor's thesis. The realisation is focussed on particular parts and circuit design. The part of this thesis is aimed to construct a working mixer and to measure its parameters. Also there is mentioned a design of laboratory exercise and an automated measurement setup done in Agilent VEE.
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Water mixer
Damajka, Štěpán ; Glos, Jan (referee) ; Veselý, Libor (advisor)
The aim of this bachelor thesis is to build device for mixing warm and cold water. Water mixer consists of a temperature sensor and flow sensor. Actuator devices are two-way diaphragm solenoid valves and three-way valve with servo-engine. Thesis focuses on identification system and design of a suitable controller.
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Design of Electric Hand Mixer
Nováková, Monika ; Buganská, Tamara (referee) ; Rubínová, Dana (advisor)
This thesis deals with the design of an electric hand mixer while in the entire process is favored new perspective not only on the design of the product but also its function from the user's point of view. Its goal is to design the look of the product which will be unique and differently shaped from the products occurring these days in the market and will satisfy every technical and ergonomic requirements. It should be design of the lower price category product. This thesis, among other things, deals with the handling and storage of mixer beaters. The solution is to be an innovative way of keeping whisk together with the mixer which does not adversely affect the handling and does not increase the price.
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LPG Alternative Fuel Cars
Magdolen, Michal ; Kaplan, Zdeněk (referee) ; Ramík, Pavel (advisor)
This Bachelor's thesis contents the very last development in field of LPG alternative fuel cars. The thesis deals with constitution and characteristic properties of LPG, survey and description of various LPG components, LPG conversion, the use of a specific LPG system, according to engine technological level, ecologic aspects and LPG influence on engine components wear. The conclusion contain important knowledge and very own expirience in matter of LPG conversion and its economic features.
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Retrodirective antenna array
Šindler, Pavel ; Morávek, Ondřej (referee) ; Pokorný, Michal (advisor)
In the first part of this thesis a basic theory of retrodirective antenna arrays and their particular parts – antennas and mixers is summarized. Further, there is a basic summary of possibilities for an usage of retrodirective antenna arrays for an information transmission. The second part deals with the concrete retrodirective antenna array design. The design starts with creation of an antenna array model for MATLAB software. Then a suitable structure for further design is chosen. Further, particular parts of retrodirctive antenna array – a patch antenna, a mixer, a low-pass filter, a bandstop filter, a signal combiner and a Wilkinson power divider are designed and analyzed in Ansoft Designer software. For the patch antenna analysis also CST Microwave Studio software is used. The following part deals with the realization of particular parts of the retrodirecive antenna array and its parameters measuring.
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Two shaft continuous mixer
Lukuvka, Šimon ; Malach, František (referee) ; Malášek, Jiří (advisor)
This diploma project solves questions of blending processes and mixers of partikular materials. In the first and the second part is solved theoreticel analysis of blending processes. Contain of the third and the fourth part is designing and calculating of the mixer´s parameters.
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Video mixer/translator for web-based videoconference system
Hutar, Jan ; Balík, Miroslav (referee) ; Číka, Petr (advisor)
Bachelor s thesis specialises in a basic description, comparing and processing of video standards H.264 and VP8 in real time. Particularly it concerns a support of videoconfe- rence systems working with those mutually incompatible standards. The work enquires and tests two most considerable software devices convenient with basic requirements for working with video in real time and available with LGLP licence respectively FFmpeg and GStreamer. The thesis suggests practice video mix implementation of data input and the way of code translation into required outgoing stream. FFmpeg tool has been used for realization and message of mixer/translator and simple interface has been established available from web browser with assistance of HTML, PHP and Javascript.
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