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Artificial magnetic conductor for textile-integrated circularly polarized antenna
Ritter, John Richard ; Kadlec, Petr (referee) ; Raida, Zbyněk (advisor)
This thesis deals with a circularly polarized antenna using an artificial magnetic conductor (AMC). The concept for this antenna is adopted from [1]. The antenna structure was simulated in its original, published form to verify the validity of the results in [1]. The antenna structure was then modified for manufacturing on a textile substrate and for operation in the ISM 5,8 GHz frequency band. After the modification the antenna was manufactured. The antenna properties were subsequently measured to verify the simulated results. The antenna can be potentially used in wireless communication systems, such as wireless body area networks (WBAN).
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Textil Integrated Horn Antenna
Jaroš, Ondřej ; Pokorný, Michal (referee) ; Vélim, Jan (advisor)
This diploma thesis describes the corrugated substrate integrated horn antenna designed to surface wave’s excitation in the UWB band groups 3, 4, 5 and 6 (6 – 10 GHz). The antenna is integrated into 3,4 mm thick textile with relative permittivity r = 1,195. The coaxial cable is connected via the SMA connector that is attached to the aluminum bracket. From the microstrip line transition the corrugated substrate integrated waveguide is excited. Two strip lines are placed in front of the aperture for improvement of the impedance matching. The directivity of the antenna is 12 dBi at 8 GHz. At the same frequency, the antenna efficiency is 70%.
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Printed wearable antennas
Trubák, Jan ; Láčík, Jaroslav (referee) ; Raida, Zbyněk (advisor)
The project deals with the design of a planar antenna on a textile substrate. The antenna should operate at the frequency of 5.8 GHz. Parameters of the fabricated antenna are compared with characteristics of the antenna simulated in Ansys HFSS. The best possible match between simulated and measured results is obtained by measuring the relative permittivity of the textile substrate, by calculating optimal dimensions of the layout of the planar antenna and by suitable modifications of the simulation model.
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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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Artificial magnetic conductor for textile-integrated circularly polarized antenna
Ritter, John Richard ; Kadlec, Petr (referee) ; Raida, Zbyněk (advisor)
This thesis deals with a circularly polarized antenna using an artificial magnetic conductor (AMC). The concept for this antenna is adopted from [1]. The antenna structure was simulated in its original, published form to verify the validity of the results in [1]. The antenna structure was then modified for manufacturing on a textile substrate and for operation in the ISM 5,8 GHz frequency band. After the modification the antenna was manufactured. The antenna properties were subsequently measured to verify the simulated results. The antenna can be potentially used in wireless communication systems, such as wireless body area networks (WBAN).
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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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Textil Integrated Horn Antenna
Jaroš, Ondřej ; Pokorný, Michal (referee) ; Vélim, Jan (advisor)
This diploma thesis describes the corrugated substrate integrated horn antenna designed to surface wave’s excitation in the UWB band groups 3, 4, 5 and 6 (6 – 10 GHz). The antenna is integrated into 3,4 mm thick textile with relative permittivity r = 1,195. The coaxial cable is connected via the SMA connector that is attached to the aluminum bracket. From the microstrip line transition the corrugated substrate integrated waveguide is excited. Two strip lines are placed in front of the aperture for improvement of the impedance matching. The directivity of the antenna is 12 dBi at 8 GHz. At the same frequency, the antenna efficiency is 70%.
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|
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Printed wearable antennas
Trubák, Jan ; Láčík, Jaroslav (referee) ; Raida, Zbyněk (advisor)
The project deals with the design of a planar antenna on a textile substrate. The antenna should operate at the frequency of 5.8 GHz. Parameters of the fabricated antenna are compared with characteristics of the antenna simulated in Ansys HFSS. The best possible match between simulated and measured results is obtained by measuring the relative permittivity of the textile substrate, by calculating optimal dimensions of the layout of the planar antenna and by suitable modifications of the simulation model.
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