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Slot Antenna Array Based on Substrate Integrated Waveguide
Sedláček, Petr ; Polívka, Milan (referee) ; Mikulášek, Tomáš (advisor)
The Master’s Thesis deals with the design of slot antenna array based on the substrate integrated waveguide (SIW). Various supply methods are described and the design procedure is approached. The antenna array was designed for Wi-Fi band of 5 GHz in the Ansoft HFSS simulation software. The optimalized parameters are impedance bandwidth (low reflection coefficient at antenna input in the desired frequency band) and the gain (the maximum value). As the result of the work 3 antenna arrays based on the substrate integrated waveguide are designed and fabricated: antenna arrays 2x1, 2x2 and antenna array 2x2 supplemented with housing for outdoor use. The work also contains a comparison of simulated and measured parameters of antennas.
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Slot antenna for X band
Buriánek, František ; Horák, Jiří (referee) ; Láčík, Jaroslav (advisor)
This work familiarizes readers with the issues of slot antennas. It presents design and simulation of slot antenna for X band in CST Microwave Studio program. The simulation procedure is described here, including all the settings required for proper operation of the simulation. Then there is the description of the principle of the Half-Mode Substrate Integrated Waveguide - HMSIW. In the end the designed structure of HMSIW and the slot antenna are assembled and measured. The results of the simulation are compared with the results acquired by measurements. The designed antenna at the frequency 10 GHz achieves the impedance bandwidth 255 MHz, and the gain 8,81 dBi (the simulated values in CST Microwave studio).
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Imaging the magnetic field of plasmonic antennas based on Babinet's principle
Špičáková, Tereza ; Horák, Michal (referee) ; Křápek, Vlastimil (advisor)
This thesis concerns plasmonic antennas and the electromagnetic field of surface plasmon polaritons. In the first chapter we look at the theory of the electromagnetic field and the electromagnetic wave associated with the interface between metals and dielectric materials and we explain Babinet’s principle. In the next part of the thesis we describe the process of fabrication of plasmonic antennas using Kaufman ion source and focused ion beam. We continue wuth the theoretical description of the electron energy loss spectroscopy and the application of this method for characterizing the optical response of these structures. In the last part we introduce the principles of processing the measured data and the conclusions drawen frome this data. Next we will analyze the limits of the validity of Babinet’s principle and using this principle, we will image the magnetic field of the antennas. Finally, we discuss the possibilities of describing this problem with computer simulation.
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Imaging the magnetic field of plasmonic antennas based on Babinet's principle
Špičáková, Tereza ; Horák, Michal (referee) ; Křápek, Vlastimil (advisor)
This thesis concerns plasmonic antennas and the electromagnetic field of surface plasmon polaritons. In the first chapter we look at the theory of the electromagnetic field and the electromagnetic wave associated with the interface between metals and dielectric materials and we explain Babinet’s principle. In the next part of the thesis we describe the process of fabrication of plasmonic antennas using Kaufman ion source and focused ion beam. We continue wuth the theoretical description of the electron energy loss spectroscopy and the application of this method for characterizing the optical response of these structures. In the last part we introduce the principles of processing the measured data and the conclusions drawen frome this data. Next we will analyze the limits of the validity of Babinet’s principle and using this principle, we will image the magnetic field of the antennas. Finally, we discuss the possibilities of describing this problem with computer simulation.
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Slot antenna for X band
Buriánek, František ; Horák, Jiří (referee) ; Láčík, Jaroslav (advisor)
This work familiarizes readers with the issues of slot antennas. It presents design and simulation of slot antenna for X band in CST Microwave Studio program. The simulation procedure is described here, including all the settings required for proper operation of the simulation. Then there is the description of the principle of the Half-Mode Substrate Integrated Waveguide - HMSIW. In the end the designed structure of HMSIW and the slot antenna are assembled and measured. The results of the simulation are compared with the results acquired by measurements. The designed antenna at the frequency 10 GHz achieves the impedance bandwidth 255 MHz, and the gain 8,81 dBi (the simulated values in CST Microwave studio).
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|
|
Slot Antenna Array Based on Substrate Integrated Waveguide
Sedláček, Petr ; Polívka, Milan (referee) ; Mikulášek, Tomáš (advisor)
The Master’s Thesis deals with the design of slot antenna array based on the substrate integrated waveguide (SIW). Various supply methods are described and the design procedure is approached. The antenna array was designed for Wi-Fi band of 5 GHz in the Ansoft HFSS simulation software. The optimalized parameters are impedance bandwidth (low reflection coefficient at antenna input in the desired frequency band) and the gain (the maximum value). As the result of the work 3 antenna arrays based on the substrate integrated waveguide are designed and fabricated: antenna arrays 2x1, 2x2 and antenna array 2x2 supplemented with housing for outdoor use. The work also contains a comparison of simulated and measured parameters of antennas.
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