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Textile Integrated Waveguide Components
Cupal, Miroslav ; Polívka, Milan (oponent) ; Joler, Miroslav (oponent) ; Raida, Zbyněk (vedoucí práce)
The thesis is focused on the research of structures based on the Textile Integrated Waveguide (TIW). Attention is turned to the electrical characterization of textile materials (textile substrates, yarns) to be used for the implementation of textile-integrated antennas, reconfigurable and active circuits. The thesis deals with the design of multilayer transitions between a microstrip line on a conventional substrate and textile-integrated lines. Second, a concept of the textile-integrated switch is presented. The switch is controlled by conductive posts which are connected or disconnected by DC driven PIN diodes to form open or closed walls. Finally, the design methodology for textile-integrated circularly polarized antennas operating in ISM bands up to 24 GHz is proposed. All the design procedures were verified by simulations and measurements of real samples manufactured by screen-printing using a silver polymer paste. For bonding semiconductor components, conductive silver adhesives were used. Screen-printed components were compared with reference structures manufactured from a self-adhesive copper foil.
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Wearable antenna array for backscatter communication
Benites Ayala, Jhony Cristian ; Pítra, Kamil (oponent) ; Raida, Zbyněk (vedoucí práce)
This master’s thesis is focused on the design and the practical realization of a novel twin-grid wearable textile-integrated array antenna for operation in the 5.8 GHz ISM band for potential backscatter communication. The thesis deals with the design concept, operation, and optimization of the proposed array antenna for its integration into clothing. Simulations of the numerical model of the antenna structure designed in CST Microwave Studio are presented to verify its functionality. Subsequently, two antenna prototypes are manufactured with a 3D knitted fabric produced by SINTEX. The first prototype is fabricated by the PCB technology from a self-adhesive copper foil. The second prototype is implemented by screen-printing technology using a silver-polymer paste. Finally, simulated and experimentally measured properties of the textile array antenna on an agar phantom are compared and evaluated.
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Wearable antenna array for backscatter communication
Benites Ayala, Jhony Cristian ; Pítra, Kamil (oponent) ; Raida, Zbyněk (vedoucí práce)
This master’s thesis is focused on the design and the practical realization of a novel twin-grid wearable textile-integrated array antenna for operation in the 5.8 GHz ISM band for potential backscatter communication. The thesis deals with the design concept, operation, and optimization of the proposed array antenna for its integration into clothing. Simulations of the numerical model of the antenna structure designed in CST Microwave Studio are presented to verify its functionality. Subsequently, two antenna prototypes are manufactured with a 3D knitted fabric produced by SINTEX. The first prototype is fabricated by the PCB technology from a self-adhesive copper foil. The second prototype is implemented by screen-printing technology using a silver-polymer paste. Finally, simulated and experimentally measured properties of the textile array antenna on an agar phantom are compared and evaluated.
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Textile Integrated Waveguide Components
Cupal, Miroslav ; Polívka, Milan (oponent) ; Joler, Miroslav (oponent) ; Raida, Zbyněk (vedoucí práce)
The thesis is focused on the research of structures based on the Textile Integrated Waveguide (TIW). Attention is turned to the electrical characterization of textile materials (textile substrates, yarns) to be used for the implementation of textile-integrated antennas, reconfigurable and active circuits. The thesis deals with the design of multilayer transitions between a microstrip line on a conventional substrate and textile-integrated lines. Second, a concept of the textile-integrated switch is presented. The switch is controlled by conductive posts which are connected or disconnected by DC driven PIN diodes to form open or closed walls. Finally, the design methodology for textile-integrated circularly polarized antennas operating in ISM bands up to 24 GHz is proposed. All the design procedures were verified by simulations and measurements of real samples manufactured by screen-printing using a silver polymer paste. For bonding semiconductor components, conductive silver adhesives were used. Screen-printed components were compared with reference structures manufactured from a self-adhesive copper foil.
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