The students will learn the main electromagnetic wave propagation mechanisms, how to describe and recognize unwanted conducted and radiated emissions 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 summary
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.
• Basics of electromagnetic wave propagation. Maxwell Equations and Wave Equation. Guided and free space propagation.
• Phasors and Fourier Transformation. Harmonic regime.
• Plane waves. Transmission and reflection for planar interfaces.
• Transmission Lines: lumped element model. Reflection and Matching. The Smith Chart.
• Fundamental of Antennas. Near field and far field regions. The Friis formula.
• Main antenna parameters: radiation pattern, directivity, gain, loss, equivalent circuit, effective area.
• EMC Directives: directives for automotive. Test sites for measurements and conformity assessment procedures.
• Disturbance and Shielding: Conducted and radiated emissions. Conducted and radiated immunity.
• Automotive Data Communication Buses: CAN, Flex Ray, Ethernet and MOST.
F.T. Ulaby, U. Ravaioli, Fundamentals of Applied Electromagnetics, 7th Ed., Pearson, 2015. ISBN 0133356817
Clayton R. Paul, Introduction to Electromagnetic Compatibility, 2nd Ed., Wiley-Interscience, 2006. ISBN 0471755001
The activity will be mainly based on presential theory lectures integrated with classroom exercises; group and CAD experiences will allow students to apply theoretical knowledge to practical problems.
Assessment methods and criteria
The exam is based on an oral test aimed to verify the student knowledge and understanding of basic EMC phenomena. The oral test will last about one hour and will cover all the aspects met during the course.
Lecture slides will be made available before class.
A limited number of copies of the adopted textbooks and other relevant textbooks are available at the library.