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Modeling of planar coupling circuits
Valošek, Josef ; Puskely, Jan (referee) ; Láčík, Jaroslav (advisor)
This master’s thesis deals with modelling of the planar coupling circuits, namely type of the wideband couplers and the ultra-wideband couplers. The purpose of this thesis is an analysis, a synthesis, a numerical modelling and a fabrication (only chosen types) of the presented couplers. All of the couplers works on medium frequency f0 = 7 GHz with coupling C = 3 dB. Types of the substrate are Arlon 25N and Arlon AD600. EM simulator IE3D and circuit simulator in program Ansoft Designer are used for the numerical modelling. The realized wideband couplers were measuring by the vector analyzer Agilent E3864B.
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Solution technology of manufacturing for part "disc of coupler"
Borek, Vít ; Osička, Karel (referee) ; Mouralová, Kateřina (advisor)
An introduction to main principles of coupling and description of basic types has been done. An analysis of the given component and a proposal for suitable intermediate was made. A selection of machines and tools for individual operations has been done. A proposition of technologic process and enumeration of machines times was proposed. Economic evaluation containing costs for tools, cooperation, workmen’s wages, intermediate and energy for operating machines has been calculated.
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Evaluating Quality of Service Design
Hejl, Daniel ; Feuerlicht, Jiří (advisor) ; Pavlíčková, Jarmila (referee)
Service Oriented Architecture is a popular choice of system architecture and many organization are moving towards it in order to closely align IT capabilities with their business goals. They are expecting that the implementation of SOA will lead to increased efficiency, the ability to rapidly respond to changing business environments, and significantly improved return on investment. In order to meet these expectations, great emphasis must be given on correct service design. However, designing services in the way that they are highly reusable and the final product is highly maintainable can be especially challenging. This bachelor thesis focuses on summarization of how metrics for measuring structural properties of service oriented software designs can be used for predicting potential problems in service design. In the practical part of this thesis, a tool for evaluating a service design based on coupling between service interfaces was implemented and practical applicability of one of the metric was demonstrated.
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Interaction of a spherical shell surrounded by an acoustical medium
Zolotarev, Igor
The interaction problem of a spherical shell with an acoustical medium is studied as some approximation of the human skull. The elastic sphere is described by using the thin shell theory and, in general, a compressible inviscid fluid that is considered on the inside of the vibrating shell. The dynamic characteristics such as the natural frequencies and the modes of vibration are analysed as functions of the geometrical and physical parameters of the studied system. The coupling of the elastic sphere and the acoustic medium are presented by use variations of the natural frequencies on the wave parameter and the influence of fluid on these variations.
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