The course addresses the problem of the interferences, so present in our current environment, and the need to design electronic equipment considering not only its functionality, but also its capacity to interfere and to exhibit a certain level of immunity against the interferences from the environment. It is also important to identify the extra design requirements related to the legal requirements for to put any electronic device into the market.
The course discusses interferences, both natural and artificial, the paths and ways of coupling, and the design techniques to improve the electromagnetic compatibility of electric and electronic equipment. The measurement environments and the instrumentation needed to perform tests are also explained, as well as the pertinent measurement procedures to evaluate the compliance of the EMC directives. We also study the legislation, regulations and organizations involved in the conformity procedures necessary to obtain the 'CE´ label. Finally, the course also has a practice which consists in the study of real practical cases.
Titular Professors
Professors
Notions of electronics, instrumentation and transmission systems
The main target for this subject is to provide to the students a global vision of all aspects of the electromagnetic compatibility in an electronic design. The proposed views are:
- Design: to understand the physics behind the noise generation and propagation to the environment. Identify the noise source, how to reduce and block their propagation.
- Legal: to identify the legal requirements related to electromagnetic compatibility and add to the design requirements. A brief description of legal environment.
- Measurement (inside): global vision of the tests to be done for demostrate the electromagnetic compatibility . Instrumentation needed, result analysis and identify external facilities needed.
- Measurement (outside): global vision of external facilities in the market. Minimum quality result analysis.
- To have a pragmatic business approach to problems.
1. The EMC problem
2. Interference sources
3. Ways of coupling
4. Cables
5. Shielding
6. Earth, ground and bias
7. Filtering
8. Electrostatic discharge (ESD)
9. Measurement instruments for EMC
10. Measurement environments
11. Electromagnetic susceptibility (EMS)
12. Regulations and legislation for Electromagnetic Compatibility.
13. Practical cases
During the course several methodologies are combined to teach the subject.
- Magisterial classes. The professor imparts the subject and tries that it be as participative as possible through questions and debates.
- Experimental classes. The professor make a real test (simplified) as a base to demostrate different physical fenomena or aspects of electromagnetic comaptibility. The student is requested to explain the phenomenon, base of the experiment, results or reason for results with the target of explain and understand the effects.
- Web material. Videos and quality web pages with relevant information.
- Presentation of real situations.
- Students presentation of a product study. It is important not only the presentation to the rest of the class, the answers and questions to other gorups are taken into account.
The evaluation of the subject is carried out through a continuous evaluation system (complementary activities, work and participation in class) complemented by two written tests. The grade is obtained from the following elements:
40% Continuous Assessment + 60% Exam
- General vision and understand the problems that electromagnetic compatibility poses from the point of view of electric and electronic equipment design and from the view of measurement procedures and legislation and organizations that regulate it.
- Master the basic concepts and magnitudes related with the subject.
- Identify the origin and nature of all the possible interference sources and coupling paths.
- Capacity to apply the techniques described in the course to solve both emission and immunity problems.
- Capacity to perform laboratory tests and measurements in order to verify the conformity of devices to the pertinent regulations.
- Analyze practical situations and decide among the several improvement alternatives,
- Reach a pragmatic business approach to problems.
David Badia Folguera, transparències i apunts de Compatibilitat Electromagnètica.2018 Publicacions Enginyeria i Arquitectura La Salle.
Michel Mardiguian, EMI Troubleshooting Techniques. 1999. McGraw-Hill.
Kenneth Wyatt. Create Your Own EMC Troubleshooting Kit (Volume 1).2020.
Wyatt Technical Services LLC. Kenneth Wyatt. Workbench Troubleshooting EMC Emissions (Volume 2).2021.
Wyatt Technical Services LLC. Kenneth Wyatt. Workbench Troubleshooting EMC Immunity (Volume 3).2021.
Wyatt Technical Services LLC. Lopez Veraguas, Joan Pere Compatibilidad electromagnética y seguridad funcional en sistemas electrónicos (2013), Coedición Editorial Marcombo, S.A. / Alfaomega Grupo Editor SA.
H.W. Ott Electromagnetic Compatibility Engineering (2009) Editorial: Wiley
Tim Williams EMC for Product Designers, Fourth Edition, Newnes, UK 2007
Howard Johnson, Martin Graham High-Speed Digital Desing. A Handbook of Black Magic. Prentice Hall, 1993. 27th Printing, 2011
Howard Johnson, Martin Graham High-Speed Signal Propagation. Advanced Black Magic. Prentice Hall, 2003. 11th Printing, 2011
Mark I. Montrose Printed Circuit Board Design Techniques for EMC Compliance; IEEE Press Original Handbook;
Mark I. Montrose, Edward M. Nakauchi Testing for EMC Compliance IEEE Press 2004
Anatoly Tsaliovich Electromagnetic Shielding Handbook for wired and wireless EMC applications Kluwer Academic Publishers. Norwell, Massachusetts
R. Pallas, F. Daura, J. Balcells, E. Esparza. Interferencias electromagéticas en sistemas electrónicos, 1a ed. Marcombo, Barcelona