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Modeling of microwave structures based on SIIG
Teplý, Tomáš ; Horák, Jiří (referee) ; Láčík, Jaroslav (advisor)
Well-known dielectric image guide reach in millimeter-wave interesting results. Compared to a conventional types of lines and waveguides is characterised by low-through loss for frequencies approaching 100 GHz. This work is detail focused to basic characteristics and especially type of perforate highpermitivity substrate for obtain implemented waveguide to dielectric board (SIIG). The work also contains couple suggestions for various transitions from a commonly used lines and waveguides. Simulation results using finite element method is achieved attenuation values below 2 dB, which corresponds to a 2 cm length and include a waveguide itself with a pair of transitions. Finally, this work also designed the production method and SIIG applicatoin in practicle.
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Modeling of Signal Propagation in Wireless LTE and WiFi Networks in Indoor Deployment
Olbert, Jaroslav ; Mašek, Pavel (referee) ; Hošek, Jiří (advisor)
Masters thessis deals with the problematics of wireless signal propagation modeling inside buildings. The theoretical part of this thessis describes principles and methods of electromagnetic waves spreading in open areas and in indoor deployment. There are also described methods used for calculating the path of signal propagation ray-launching and ray-tracing. This part also includes description of an algorithm and equations used for simulating 5GHz WiFi signal propagation inside the Department of telecommunications corridors. Second part of this thessis includes a description of a NS-3 module mmWave, which was used for simulations of IEEE 802.11ad (WiGig) standard. There are also results of these simulations and their detailed description. At the end of this thessis comparison of these results with values gained by real environment measurements can be found.
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Motionless Presence Detection of Humans
Szabó, Tomáš ; Dolejška, Daniel (referee) ; Pluskal, Jan (advisor)
Tato práce má za účelem nalezení generického řešení pro implementaci detekce osob v chytré domácnosti. Jednoduchá implementace za pomoci PIR sensorů je sice efektivní, ale při delší nečinnosti v místnosti jako práce na počítači nebo sledování televize není šance detekce změny v prostoru. Díky radaru fungujícím na bázi milimetrových vln jsme schopni říct zda osoba v místnosti skutečně pořád je. Existující komerční řešení je drahé a pro některé kouty světa nedostupné, jelikož produkt v dané zemi nemusí být povolen k prodeji. Řešením je implementace radaru tak, aby mohl fungovat jako samostatná jednotka v propojení s vývojovou sestavou, tak jako jedinec v rámci množiny senzorů. Jako testovací prostředí je vybráno prostředí NES@FIT pro rozsvícení světel při detekci osoby v mistnosti, kde je realizace prozatím řešena PIR senzory.
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Modeling of Signal Propagation in Wireless LTE and WiFi Networks in Indoor Deployment
Olbert, Jaroslav ; Mašek, Pavel (referee) ; Hošek, Jiří (advisor)
Masters thessis deals with the problematics of wireless signal propagation modeling inside buildings. The theoretical part of this thessis describes principles and methods of electromagnetic waves spreading in open areas and in indoor deployment. There are also described methods used for calculating the path of signal propagation ray-launching and ray-tracing. This part also includes description of an algorithm and equations used for simulating 5GHz WiFi signal propagation inside the Department of telecommunications corridors. Second part of this thessis includes a description of a NS-3 module mmWave, which was used for simulations of IEEE 802.11ad (WiGig) standard. There are also results of these simulations and their detailed description. At the end of this thessis comparison of these results with values gained by real environment measurements can be found.
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Modeling of microwave structures based on SIIG
Teplý, Tomáš ; Horák, Jiří (referee) ; Láčík, Jaroslav (advisor)
Well-known dielectric image guide reach in millimeter-wave interesting results. Compared to a conventional types of lines and waveguides is characterised by low-through loss for frequencies approaching 100 GHz. This work is detail focused to basic characteristics and especially type of perforate highpermitivity substrate for obtain implemented waveguide to dielectric board (SIIG). The work also contains couple suggestions for various transitions from a commonly used lines and waveguides. Simulation results using finite element method is achieved attenuation values below 2 dB, which corresponds to a 2 cm length and include a waveguide itself with a pair of transitions. Finally, this work also designed the production method and SIIG applicatoin in practicle.
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