Analysis, design and performance of a perforated dielectric flat lens as antenna system for an ISL (INTER-SATELLITE LINK)

López Querol, Pablo (2020). Analysis, design and performance of a perforated dielectric flat lens as antenna system for an ISL (INTER-SATELLITE LINK). Proyecto Fin de Carrera / Trabajo Fin de Grado, E.T.S.I. Telecomunicación (UPM).

Description

Title: Analysis, design and performance of a perforated dielectric flat lens as antenna system for an ISL (INTER-SATELLITE LINK)
Author/s:
  • López Querol, Pablo
Contributor/s:
  • Salas Natera, Miguel Alejandro
Item Type: Final Project
Degree: Grado en Ingeniería de Tecnologías y Servicios de Telecomunicación
Date: 2020
Subjects:
Freetext Keywords: Flat lens, Perforated dielectric lens, Permittivity, Beamscanning, Dielectric lens, ISL (Inter-Satellite Link, 5G network
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Perforated dielectric lenses make use of a rather novel technique that allows to achieve very directive and completely flat antenna systems. Moreover, they result relatively small and low cost, which makes them interesting for application in space. In the following work, a perforated lens is designed and simulated from two materials, one with a permittivity value of 2.5 and another with a permittivity value of 3, for two working bands: 72GHz-76GHz and 81GHz-86GHz. The process followed for the design of both lenses is the same and described below. First, a state-of-the-art review has been carried out where the different types of lenses and the advantages which they offer are studied, taking special attention to perforated dielectric lenses. From this we have obtained the mathematical results that allow to define later, in the design of the lens, the size of the perforations to be performed, as well as their distribution and configuration. Second, a unit cell has been analyzed whose simulation is performed under certain conditions that simulate periodicity. The objective of this analysis has been to test different hole sizes on that dielectric cell to bring out a series of discrete values that can be synthesized in the design phase. Third, the permittivity values needed along the lens have been calculated based on the principle that the phase on the lens surface must be compensated. Hence, we get a curve that relates the points of the lens with the needed permittivity at that point for phase compensation. With the data obtained in the previous phase, a stepped curve with the values that we can actually obtain is represented on the above-mentioned design curve. Thus, we have two graphs: the design, ideal and continuous and the stepped, which is like a discretization of the previous one. Fourth, a design has been made and simulated that simulates zones of different permittivity using solid rings. This allows us to evaluate the operation of the lens and verify the design process, as well as obtaining results that will tell us what can be expected of the design with perforations. Fifth, with the design graphics and the results of solid ring simulations, the perforated lens has been designed on both materials. Simulations on the models designed are made and then the results of the lens performance are obtained.

More information

Item ID: 63019
DC Identifier: http://oa.upm.es/63019/
OAI Identifier: oai:oa.upm.es:63019
Deposited by: Biblioteca ETSI Telecomunicación
Deposited on: 15 Jul 2020 07:31
Last Modified: 15 Jul 2020 07:31
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