Ing Ind - Inf (Mag.)(ord. 270) - BV (470) SPACE ENGINEERING - INGEGNERIA SPAZIALE
052430 - TELECOMMUNICATION SYSTEMS
The objective of the course is to provide the students with the theoretical fundamentals of telecommunication, with particular emphasis on Earth-Space links, to which specific reference is made in the final part of the course. The topics considered are the presentation and discussion of the basic characteristics of the signals constituting the information to be transmitted, the different techniques used to transmit and receive such information, the basic block diagrams of transmitter and receivers analysed in terms of transfer functions of each block and the main characteristics of the different types of antennas. Moreover, the propagation of electromagnetic waves in the real environment, at any frequency, is addressed.
Risultati di apprendimento attesi
After passing the exam, the student:
knows the standard terminology of electric and electronic components and equipment in order to properly discuss with electronic and radio systems engineers
knows the principles and the basic physical laws regulating the propagation of electromagnetic waves in cables, waveguides and fibre optics, as well as in diversified terrestrial and Earth-space communication (e.g. SatCom) systems, at radio frequencies.
has a comprehensive picture of modern wireless communication systems
possesses the knowledge necessary to define the main specifications of wireless communication systems in diversified scenarios (e.g. calculation of the transmit power and antenna size in SatCom systems and in a point-to-point terrestrial link).
knows how to use some software tools devoted to the analisys and design of wireless communication systems (e.g. tool for link budget calculation in SatCom systems)
The topics of the course are:
Telecommunications basics: Signals classification and characteristics. Analog modulations: amplitude, frequency and phase modulation. Transmitter and receiver block diagrams.
Components and circuits: Elementary analog circuits (amplifiers, oscillators, mixers, filters, amplitude and frequency detectors, etc.) and their applications. Elementary digital circuits and their applications. Elementary electronic and microwave components.
Antennas: Basic parameters of antennas (gain, directivity function, beamwidth, equivalent area, etc.), main antenna types and characteristics. Fields of application.
Electromagnetic wave propagation: Guided propagation (transmission lines, waveguides and fiber optics); radiated propagation (effects of ground, troposphere and ionosphere); dependence of electromagnetic wave propagation on frequency.
Earth-space links: Frequency allocation; power and bandwidth requirements; noise and interference. Digital modulation schemes. Links with LEO satellites (brief notes to space probes): effects of the medium. Link budget.
Trigonometry, calculus with complex numbers, basic notions on electromagnetic fields, differential and integral calculus, basic knowledge of electric circuits in sinusoidal regime and phasor representation
Modalità di valutazione
The exam includes an oral test aiming to evaluate:
the use of proper terminology during the oral discussion
the understanding of the physical concepts at the basis of the transfer of information from one position to another one through conducted or radiated propagation
the basic knowledge of the modulation process and the block diagrams of typical transmitters and receivers
the ability to explain and discuss the basics of a satellite mission and the evaluation of the corresponding link budget
J.A. Richards, Radiowave propagation. An introduction for the non specialists, Editore: Springer
A. Paraboni, M. D'Amico, Radiopropagazione, Editore: McGraw-Hill
B. Guru and H. Hiziroglu, Electromagnetic field theory fundamentals, Editore: Cambridge University Press
C. Riva, G. G. Gentili, Appunti di campi elettromagnetici, Editore: Libreria Cortina
J.E. Allnutt, Satellite to ground radiowave propagation, Editore: IET
Tipo Forma Didattica
Ore di attività svolte in aula
Ore di studio autonome
Laboratorio Di Progetto
Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese