With the necessity of more efficient use of the spectrum due to the demand from the consumers, the spectrum regulatory entities must find ways to make better use of the available spectrum and create techniques that allow good QoS and the same reliability as before. Taking this into account, RSPG proposed the concept of the Licensed Shared Access (LSA) model which makes use of three dimensions to perform the frequency sharing: time, frequency and geolocation. The objective of this dissertation is to present a system that can incorporate the LSA Model in Portugal and its purpose is to locate, detect and characterize the incumbents’ signal in order to verify if there are good conditions for the incumbents’ signal to be transmitted

Abstract In this work, a compact ultra-wide-band microstrip antenna loaded with C-shaped parasitic elements, for Digital Video Broadcasting - Terrestrial (DVB-T) and LTE 450 / 700 signal reception, is designed and presented. The proposed antenna is named “HI Monopole”, and its geometry has been designed to be simple, lightweight, and compact. Fabrication process is inexpensive and suitable for electronic gadgets. The HI Monopole operates with ultra-wide bandwidth characteristics, encompassing Digital Video Broadcasting - Terrestrial (DVB-T) standard (470-890 MHz), LTE-450 and LTE-700 bands. This feature has been accomplished by inserting an indent in its ground plane, adjusting dimensions of the feeding line, and adding two C-shaped parasite elements onto the region posterior to the antenna's main radiating element. It was verified via electromagnetic measuring that this device is capable of covering the 429-1022 MHz range. Hence, its total bandwidth is 593 MHz. The superior and inferior cutoff frequencies have been defined using the -10 dB return loss reference level. Therefore, the proposed antenna can be employed for receiving DTV and LTE signals broadcasted in any country, independently of its adopted standard.