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SIW-Based Circularly Polarized Antenna Arrays
Špůrek, Jan ; Joler,, Miroslav (oponent) ; Mazánek, Miloš (oponent) ; Raida, Zbyněk (vedoucí práce)
This dissertation thesis presents a new concept of SIW-based circularly polarized antenna arrays. The main property of the concept is modularity where the base building block can be utilized to create more complex antenna arrays and at the same time it serves also as the template to design the more complex structure. The antenna array was simulated and experimentally verified for the frequencies of 17 and 60 GHz. Based on the obtained results, design methodology was derived, and key design areas were identified. Next, the thesis introduces a technique of increasing axial ratio bandwidth of circularly polarized antenna arrays by utilizing parasitic patches, which are placed above the radiating elements at defined distance. The antenna array from the first section of the thesis was used in the simulations and experimental verification for the frequencies of 17 and 60 GHz, where this array was extended with the parasitic structure, adding another level of modularity into the concept.
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SIW-Based Circularly Polarized Antenna Arrays
Špůrek, Jan ; Joler,, Miroslav (oponent) ; Mazánek, Miloš (oponent) ; Raida, Zbyněk (vedoucí práce)
This dissertation thesis presents a new concept of SIW-based circularly polarized antenna arrays. The main property of the concept is modularity where the base building block can be utilized to create more complex antenna arrays and at the same time it serves also as the template to design the more complex structure. The antenna array was simulated and experimentally verified for the frequencies of 17 and 60 GHz. Based on the obtained results, design methodology was derived, and key design areas were identified. Next, the thesis introduces a technique of increasing axial ratio bandwidth of circularly polarized antenna arrays by utilizing parasitic patches, which are placed above the radiating elements at defined distance. The antenna array from the first section of the thesis was used in the simulations and experimental verification for the frequencies of 17 and 60 GHz, where this array was extended with the parasitic structure, adding another level of modularity into the concept.
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