ELECTRONICAL LY RECONFIGURABLE FS S - INSPIRED TRANSMITARRAY FOR TWO DIMENS IONAL BEAMSTEERING FOR 5G ANDRADAR APPL ICATIONS AT 2 8 GHZ

Vala, Mário António Patrício Carreira

Publication

ELECTRONICAL LY RECONFIGURABLE FS S - INSPIRED TRANSMITARRAY FOR TWO DIMENS IONAL BEAMSTEERING FOR 5G ANDRADAR APPL ICATIONS AT 2 8 GHZ

2019-10-28Master thesis

datacite.subject.fos	Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática	pt_PT
dc.contributor.advisor	Caldeirinha, Rafael Ferreira da Silva
dc.contributor.advisor	Reis, João Ricardo Vitorino
dc.contributor.author	Vala, Mário António Patrício Carreira
dc.date.accessioned	2019-12-10T14:17:17Z
dc.date.available	2019-12-10T14:17:17Z
dc.date.issued	2019-10-28
dc.description.abstract	In this dissertation, the author’s work on a 28 GHz transmitarray capable of antenna beamsteering for various wireless applications, is presented. Such device allows for the adjustment of the radiation pattern of an antenna by changing its main lobe direction, without the need of any mechanical means. A unit-cell based on a square-slot Frequency Selective Surface (FSS) is designed, simulated and optimised through several full-wave simulations, using an electromagnetic solver (CST MWS). Subsequently, the unit-cell was extended to a 10x10 array configuration in order to enable Two-dimensional (2D) beamsteering. This work yielded the fabrication of a prototype composed of four passive transmitarray lens, which were experimentally tested and characterised. Finally, a novel unit-cell based on a double square-slot intended aiming at active beamsteering was also studied and optimised in simulation environment. From this work, it was demonstrated that transmitarray can be seen as feasible alternative to many traditional beamsteering techniques, such as phased antenna arrays, while reducing the RF burden of the overall system using only a single radiation source. This fact, allied with it’s ease of integration, reduced cost and low-profile characteristics make transmitarrays a desirable solution for 5G and RADAR applications, among others.	pt_PT
dc.identifier.tid	202332381	pt_PT
dc.identifier.uri	http://hdl.handle.net/10400.8/4321
dc.language.iso	eng	pt_PT
dc.subject	Transmitarray	pt_PT
dc.subject	Beamsteering	pt_PT
dc.subject	Frequency Selective Surfaces (FSS)	pt_PT
dc.subject	5G	pt_PT
dc.title	ELECTRONICAL LY RECONFIGURABLE FS S - INSPIRED TRANSMITARRAY FOR TWO DIMENS IONAL BEAMSTEERING FOR 5G ANDRADAR APPL ICATIONS AT 2 8 GHZ	pt_PT
dc.type	master thesis
dspace.entity.type	Publication
rcaap.rights	openAccess	pt_PT
rcaap.type	masterThesis	pt_PT
thesis.degree.name	Mestrado Engenharia Electrotécnica	pt_PT