B0207 - WIRED AND WIRELESS INTERCONNECTIONS M

Conoscenze e abilità da conseguire

In questo corso gli studenti acquisiscono le conoscenze di base dell’elettromagnetismo necessarie per comprendere le problematiche esistenti in ambito automotive. Attraverso esempi riguardanti i principali sistemi su bus attualmente in uso all’interno dell’autoveicolo, gli studenti imparano a conoscere, affrontare e risolvere le problematiche legate alla distribuzione di segnali in ambienti elettromagneticamente complessi, in cui altre sorgenti e disturbi di diversa natura possono impedire la realizzazione di un sistema affidabile. Gli studenti apprendono anche come orientarsi all’interno delle norme tecniche per l’automotive, come organizzare una misura delle emissioni prodotte da un dispositivo elettronico e come predisporre una prova di immunità.

Contenuti

Module 1

Meaning of Maxwell’s equations and their energy interpretation (Poyinting’s theorem). Solution of Maxwell’s equation in absence and in presence of sources to determine plane waves and spherical waves in free space.

Sources seen as antennas, and definition of antennas characteristic parameters both in transmission and in reception. Formula of wireless link power balance (Friis’ formula). Array theory.

Module 2

Transmission Lines: lumped element model and transmission line concepts of wave propagation. Reflection and Matching. The Smith Chart.

Automotive Data Communication. Different implementations of bus-based communication systems in automotive. Automotive buses: CAN, Flex Ray, Ethernet and MOST.

Module 3

General introduction to the Electromagnetic Compatibility (EMC).

EMC Directives and directives for automotive. Test sites for measurements and conformity assessment procedures. Crosstalk. Disturbance and Shielding: Conducted and radiated emissions. Conducted and radiated immunity.

Testi/Bibliografia

"Antenna Theory: Analysis and Design", Constantine A. Balanis, John Wiley & Sons, 2012.

“Antennas and Radiowave Propagation”, Robert E: Collin, McGraw-Hill

“Fundamentals of Applied Electromagnetics”, F.T. Ulaby, U. Ravaioli, 7th Ed., Pearson, 2015

“Understanding Automotive Electronics”, W.B. Ribbens, 7th Ed., Elsevier, 2017

“Introduction to Electromagnetic Compatibility”, Clayton R. Paul, 2nd Ed., Wiley-Interscience, 2006.

“Automotive Electromagnetic Compatibility (EMC), T. Rybak, M. Steffka, Kluwer Academic Publishers, 2004”.

Metodi didattici

The course includes: lectures taught by the professor, laboratory activities on the use of a commercial electromagnetic software tool, some classroom examples where signal propagation of electrical signals on coaxial cables and CAN bus communication will be analyzed and discussed.

The lectures material (slides) is provided before the corresponding class takes place.

Periodically during the course some lessons are carried out interactively (or in flip-mode), presenting questions to which students must answer in relation to the program seen up to that time

Modalità di verifica e valutazione dell'apprendimento

The exam consists of oral interviews on the main topics of the three modules (of around 45 minutes in total). During the exam, the student can have a map with the main formulas of the course.

Strumenti a supporto della didattica

Slides of all the lectures.
Prototypes and examples shown in class to discuss about topic of the course.

Electromagnetic simulations of simple electromagnetic structures.

Orario di ricevimento

Consulta il sito web di Diego Masotti

Consulta il sito web di Gaetano Bellanca

Consulta il sito web di Gaetano Bellanca