Design and Performance Assessment of Ground Plane Boosters with a Bar Form Factor
[ANGLÈS] The progress that technology has experienced in the last few decades has largely improved electronic devices, particularly mobile phones, which have clearly evolved from having basic features to almost PC-like software and high speed connectivity. Every year, hundreds of thousands of cell p...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2099.1/25346 |
| Acceso en línea: | https://hdl.handle.net/2099.1/25346 |
| Access Level: | acceso abierto |
| Palabra clave: | Antennas (Electronics) Cellular telephone systems virtual antenna mobile phone Antenes (Electrònica) Telefonia mòbil Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Antenes i agrupacions d'antenes |
| Sumario: | [ANGLÈS] The progress that technology has experienced in the last few decades has largely improved electronic devices, particularly mobile phones, which have clearly evolved from having basic features to almost PC-like software and high speed connectivity. Every year, hundreds of thousands of cell phones are sold around the world. Customers demand both feature phones and smartphones, names meaning how low or high the processing and multimedia capabilities of the phone are, which ultimately sets the price tag. Yet, regardless of phones being one type or the other, they all require connectivity to cellular services. Providing wireless communication traditionally required antennas whose size depend on the wavelength of the frequency in which the cellular standard was deployed; usually said sizes are quite large with respect to the dimensions of a phone. However, antennas evolved from external to internal, and from singleband to multiband. This made the geometry of antennas change from very simple to very complex shapes, making it possible to communicate in several bands with an antenna being completely inside the handset. The ground plane booster antenna technology is able to provide connectivity without requiring an antenna by advantageously using the ground plane of the device, and still feature a radiating system comprised of boosters which is completely internal, multiband, and, moreover, does not require custom complex geometry designs. Ground plane boosters are small-sized elements that enable the ground plane as the radiator of a device and, hence, act like an antenna. In line with the trend of electronic devices becoming thinner, and in spite of boosters already being very small, a new form factor for ground plane boosters is studied and developed in this thesis such that their RF performance is satisfactory according to the standards in the cellular industry, specifically in 2G, 3G and 4G services. For the design of a new booster form factor, the effect each booster dimension has on the radioelectric performance of the radiating structure is first studied. Then, shape and dimensions of several booster candidates are set and their RF performance is simulated. The form factor that achieves the best results according to the simulations is prototyped together with different matching networks, and reflection coefficient and antenna efficiency are both measured. In last place, a final triple-port printed circuit board with boosters with the new form factor is presented along with the matching networks synthesized for operation in the main 2G, 3G and 4G frequency bands. |
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