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Flexible textile-integrated coils for inductive energy transfer
Konečný, František ; Cupal, Miroslav (referee) ; Raida, Zbyněk (advisor)
This work aims to describe the design of flexible textile coils in several variants (different coil dimensions, different designs). The parameters of the designed coils will be verified using simplified simulation models and compared with theoretical calculations. Further, the work deals with the practical design of coils, including the measurement of their basic parameters and determination the efficiency of inductive power transfer.
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3D textile integrated monopole
Füll, David ; Kufa, Martin (referee) ; Cupal, Miroslav (advisor)
This thesis deals with the design of omnidirectional monopole antennas. Using the parabolic reflector and the directors, the directional characteristics of monopole antennas are modified. This directional antenna, together with the omnidirectional antenna, examines the effect of various materials, the emission characteristics and the input reflection factor, near the antennas. These antennas are made of 3D textile, measured in anechoic chamber and compared to the designed antennas. At the end of the thesis is the summary and evaluation of the result.
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Antena integrated to automobile seat
Gulda, Tomáš ; Mrnka, Michal (referee) ; Cupal, Miroslav (advisor)
This thesis is focused on the design of the antenna integrated to automobile seat. Thesis explains the basics of RFID technology, and how RFID works. Especially explains the design of tag, which works in the UHF band. The tag was designed in the CST Microwave studio, where simulations were realized to verify basic properties of the tag such as S11 parameter and directivity. The thesis also contains simulation of the impact of automobile seat on the directivity. Here is the description of how the antenna was made on a textile substrate and here are also measured properties of the antenna.
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Textile Integrated Waveguide Components
Cupal, Miroslav ; Polívka, Milan (referee) ; Joler, Miroslav (referee) ; Raida, Zbyněk (advisor)
Práce je zaměřena na výzkum struktur založených na vlnovodu integrovaném do textilu (TIW). Pozornost je věnována elektrické charakterizaci textilních materiálů (textilní substráty, nitě), které jsou využívány při implementaci antén, rekonfigurovatelných a aktivních obvodů integrovaných do textilu. Práce se zabývá návrhem vícevrstvých přechodů mezi mikropáskovým vedením na konvenčním substrátu a vedeními integrovanými do textilu. Dále je prezentován koncept přepínače integrovaného do textilu. Přepínač je řízen vodivými sloupky, které vytvářejí otevřenou či zavřenou stěnu prostřednictvím stejnosměrně ovládaných PIN diod. Na závěr je formulována metodika návrhu kruhově polarizovaných antén integrovaných do textilu, jež jsou určeny pro práci v ISM pásmech až do 24 GHz. Všechny postupy návrhu byly ověřeny simulacemi a měřeními reálných vzorků, které byly vyrobeny sítotiskem stříbrnou polymerovou pastou. Polovodičové komponenty byly k obvodům přilepeny vodivým stříbrným lepidlem. Komponenty vyrobené sítotiskem byly porovnávány s referenčními strukturami, které byly realizovány pomocí samolepicí měděné fólie.
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Heart rate measurement using pulse oximetry on unconventional parts of the human body
Varmužová, Zdeňka ; Mrnka, Michal (referee) ; Cupal, Miroslav (advisor)
This study deals with the method of measuring heart rate using pulse oximetry. It describes the basic principles of this method for determining both heart rate and blood oxygenation. It examines the possibilities of placing the sensor on non-standard places of the human body. It also discusses the possible shortcomings of the method as well as the inaccuracies of measurements in certain places on the body and the possibilities of mounting the sensor and the use of the product in ordinary life. Later it presents the design for the heart rate measuring device used on the selected body part, that is forehead, and compares it with commercialy available products.
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Dual-band antenna for in-car communication
Vörös, Ondrej ; Mikulášek, Tomáš (referee) ; Cupal, Miroslav (advisor)
This bachelor’s thesis deals with the design of dual-band planar antenna on a textile substrate. The proposed antenna is tuned to the ISM band 2,4 and 5,8 GHz for application in WLAN-in-car communication. The most common types of planar microstrip antennas, their parameters, feeding methods and methods of analysis are introduced in the first part of this work. In the practical section, the design of the dual-band antenna is presented with the use of the program CST Microwave Studio. The design of two concepts of dual- band antenna made on the FR4 substrate is transformed on the 3D textile and optimised to work at desired frequency bands. After then, the thesis describes fabrication and measurement of designed dual-band antennas in the anechoic chamber and in a car.
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Flexible textile-integrated coils for inductive energy transfer
Konečný, František ; Cupal, Miroslav (referee) ; Raida, Zbyněk (advisor)
This work aims to describe the design of flexible textile coils in several variants (different coil dimensions, different designs). The parameters of the designed coils will be verified using simplified simulation models and compared with theoretical calculations. Further, the work deals with the practical design of coils, including the measurement of their basic parameters and determination the efficiency of inductive power transfer.
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Heart rate measurement using pulse oximetry on unconventional parts of the human body
Varmužová, Zdeňka ; Mrnka, Michal (referee) ; Cupal, Miroslav (advisor)
This study deals with the method of measuring heart rate using pulse oximetry. It describes the basic principles of this method for determining both heart rate and blood oxygenation. It examines the possibilities of placing the sensor on non-standard places of the human body. It also discusses the possible shortcomings of the method as well as the inaccuracies of measurements in certain places on the body and the possibilities of mounting the sensor and the use of the product in ordinary life. Later it presents the design for the heart rate measuring device used on the selected body part, that is forehead, and compares it with commercialy available products.
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Circularly polarized button antenna on frequency selective surface
Košík, Samuel ; Cupal, Miroslav (referee) ; Kuřátko, David (advisor)
This bachelor thesis is focused on circularly polarized button antenna on frequency selective surface for resonant frequency 5.5 GHz. The concept for this thesis is adopted from article [1]. This published version of the antenna was simulated to verify the validity of the antenna structure behaviour. Several optimalizations have been presented to achieve the best possible results. After all, fantom has been made, as well as the antenna, and used to demonstrate funcionality of the antenna near a human body tissue model. The whole structure with the resonant frequency 5.5 GHz and compact dimensions is primary designed for on-body communication. However, its potentiality is much wider.
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