37125 - ELECTROMAGNETIC COMPATIBILITY M

Conoscenze e abilità da conseguire

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.

Contenuti

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.

Testi/Bibliografia

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

Metodi didattici

- 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

Modalità di verifica e valutazione dell'apprendimento

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

Strumenti a supporto della didattica

- iol.unibo.it

- Practical characterization in class of electromagnetic components/systems

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

Orario di ricevimento

Consulta il sito web di Diego Masotti

Consulta il sito web di Gaetano Bellanca