Riassunto analitico
Cellular communication is becoming more and more important for the connected vehicles applications. In particular LTE is the last implemented cellular standard for automotive communication. These thesis has been developed in collaboration with ASK Industries and its aim is to provide the project of new types of radiating elements which works at LTE frequency bands. The material used, which is metallic sheets, and the 3D shape are the peculiarity of these antennas. The 3D shape allows to have a low profile and to efficiently occupy the small available volume. The trend is to put two LTE antennas under the shark-fin case in order to exploit the MIMO functionalities. In the former part of the work, the design criteria and the simulations results are presented. In the latter part the prototyping process is described and a comparison between experimental measurements and simulations is shown. To evaluate the performances of these antennas, a PCB antenna model of the company's portfolio is used as benchmark. The 3D prototypes reached the performances of a standard PCB antenna, but the use of metal sheets ,instead of PCB, can dramatically decrease production costs.
Eventually some possible improvements are suggested.
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Abstract
Cellular communication is becoming more and more important for the connected vehicles applications. In particular LTE is the last implemented cellular standard for automotive communication. These thesis has been developed in collaboration with ASK Industries and its aim is to provide the project of new types of radiating elements which works at LTE frequency bands. The material used, which is metallic sheets, and the 3D shape are the peculiarity of these antennas. The 3D shape allows to have a low profile and to efficiently occupy the small available volume. The trend is to put two LTE antennas under the shark-fin case in order to exploit the MIMO functionalities. In the former part of the work, the design criteria and the simulations results are presented. In the latter part the prototyping process is described and a comparison between experimental measurements and simulations is shown. To evaluate the performances of these antennas, a PCB antenna model of the company's portfolio is used as benchmark. The 3D prototypes reached the performances of a standard PCB antenna, but the use of metal sheets ,instead of PCB, can dramatically decrease production costs.
Eventually some possible improvements are suggested.
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