37125 - Electromagnetic Compatibility M

Academic Year 2024/2025

  • Docente: Diego Masotti
  • Credits: 6
  • SSD: ING-INF/02
  • Language: English
  • Moduli: Diego Masotti (Modulo 1) Gaetano Bellanca (Modulo 2)
  • Teaching Mode: Traditional lectures (Modulo 1) Traditional lectures (Modulo 2)
  • Campus: Bologna
  • Corso: Second cycle degree programme (LM) in Electric Vehicle Engineering (cod. 5699)

Learning outcomes

The course will introduce the basics of electromagnetic signal propagation in an automotive environment where many different sources can influence and disturb its reliable transmission. Moreover, it will deal with the different aspects of electromagnetic compatibility of electronic circuits in complex environments. Filtering and shielding techniques for conducted and radiated disturbances will be discussed, along with conventional measurement methods and instrumentation. The students will learn the main electromagnetic wave propagation mechanisms, how to describe and recognize unwanted conducted and radiated emission and interferences, as well as the strategies to design electromagnetically reliable and robust circuits, in accordance with national and international EMC regulation and directives.

Course contents

Module 1

- Basics of electromagnetic wave propagation. Maxwell Equations and Wave Equation. Guided and free space propagation.

- Quasi-stationary condition: low- and high-frequency systems/circuits.

- Plane waves. Transmission and reflection for planar interfaces.

- Transmission Lines: lumped element model. Reflection and Matching.

- Fundamental of Antennas. Near field and far field regions. The Friis formula.

- Main antenna parameters: radiation pattern, directivity, gain, loss, equivalent circuit, effective area. Practical wireless link characterization

- Use of software tool for numerical characterization of main electromagnetic phenomena

 

Module 2

- Automotive Electromagnetic Compatibility: EMC Directives, test sites for measurements and conformity assessment procedures. Antennas for EMC.

- The “Radio Energy Atmosphere” in the world of automotive. Signal spectra. Transmission lines and signal integrity.

- Conducted emissions and susceptibility. Radiated emissions and susceptibility.

- Crosstalk.

- Shielding.

Readings/Bibliography

Lectures slides

Robert. E. Collin, “Foundations for Microwave Engineering”, Wiley-IEEE Press

Robert. E. Collin, "Antennas and Radiowave Propagation", Mc Graw Hill

Clayton R. Paul, Introduction to Electromagnetic Compatibility, 2nd Ed., Wiley-Interscience, 2006. ISBN 0471755001

Teaching methods

- Lectures with slides

- Students will be involved in peer interaction with the teachers through questions and discussions

- Examples both numerical and practical of realistic electromagnetic components/systems

Assessment methods

Oral examination on both theoretical and practical topics object of the lectures

Teaching tools

- iol.unibo.it

- Practical characterization in class of electromagnetic components/systems

- Seminars on the topics of the course held by experts of the field

Office hours

See the website of Diego Masotti

See the website of Gaetano Bellanca

SDGs

Affordable and clean energy Sustainable cities

This teaching activity contributes to the achievement of the Sustainable Development Goals of the UN 2030 Agenda.