B0207 - WIRED AND WIRELESS INTERCONNECTIONS M

Academic Year 2024/2025

  • Docente: Diego Masotti
  • Credits: 9
  • SSD: ING-INF/02
  • Language: English

Learning outcomes

IIn this course, students acquire the basic knowledge of the electromagnetic theory needed to understand the problems of interest in the automotive framework. Through examples concerning the main bus systems currently in use inside vehicles, students learn to know, face and solve the problems related to the distribution of signals in electromagnetically complex environments, in which other sources and disturbances of different nature can prevent the creation of a reliable system. Students also learn how to orient themselves within the technical standards for automotive, how to organize emission measurements and how to prepare the set-up for an immunity test.

Course contents

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.

Readings/Bibliography

"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”.

Teaching methods

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.

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

Assessment methods

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.

Teaching tools

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

Electromagnetic simulations of simple electromagnetic structures.

Office hours

See the website of Diego Masotti

See the website of Gaetano Bellanca

See the website of Gaetano Bellanca