PS4008 Electromagnetic Interference and Compatibility in System Design Syllabus:
PS4008 Electromagnetic Interference and Compatibility in System Design Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
1. To provide fundamental knowledge on electromagnetic interference and electromagnetic compatibility.
2. To know about the importance of Grounding and shielding.
3. To study the important techniques to control EMI and EMC.
4. To expose the knowledge on testing techniques as per Indian and international standards in EMI measurement.
UNIT I INTRODUCTION
Definitions of EMI/EMC –Sources of EMI- Inter systems and Intra system- Conducted and radiated interference- Characteristics – Designing for electromagnetic compatibility (EMC)- EMC regulation typical noise path- EMI predictions and 69odeling, Methods of eliminating interferences and noise mitigation
UNIT II GROUNDING AND CABLING
Cabling- types of cables, mechanism of EMI emission / coupling in cables –capacitive coupling, inductive coupling- shielding to prevent magnetic radiation- shield transfer impedance, Grounding – safety grounds – signal grounds- single point and multipoint ground systems –hybrid grounds functional ground layout –grounding of cable shields- -guard shields- isolation, neutralizing transformers, shield grounding at high frequencies, digital grounding- Earth measurement Methods
UNIT III BALANCING, FILTERING AND SHIELDING
Power supply decoupling- decoupling filters-amplifier filtering –high frequency filtering- EMI filters characteristics of LPF, HPF, BPF, BEF and power line filter design –Choice of capacitors, inductors, transformers and resistors, EMC design components –shielding – near and far fields shielding effectiveness- absorption and reflection loss- magnetic materials as a shield, shield discontinuities, slots and holes, seams and joints, conductive gaskets-windows and coatings – grounding of shields
UNIT IV EMI IN ELEMENTS AND CIRCUITS
Electromagnetic emissions, noise from relays and switches, non-linearities in circuits, passive inter modulation, transients in power supply lines, EMI from power electronic equipment, EMI as combination of radiation and conduction
UNIT V ELECTROSTATIC DISCHARGE, STANDARDS AND TESTING TECHNIQUES
Static Generation- human body model- static discharges- ESD versus EMC, ESD protection in equipment- standards – FCC requirements – EMI measurements – Open area test site measurements and precautions- Radiated and conducted interference measurements, Control requirements and testing methods
TOTAL : 45 PERIODS
COURSE OUTCOMES:
CO1 Ability to understand the types and sources of EMI.
CO2 Ability to understand the needs of rounding and cabling.
CO3 Ability to understand the design concept of filtering and shielding.
CO4 Ability to study the effect of EMI in elements and circuits.
CO5 Ability to know about the effects of electrostatic discharge and testing techniques.
REFERENCES
1. V.P. Kodali, “Engineering Electromagnetic Compatibility”, S. Chand, 1996.
2. Henry W.Ott, “ Noise reduction techniques in electronic systems”, John Wiley & Sons, 1989.
3. Bernhard Keiser, “Principles of Electro-magnetic Compatibility”, Artech House, Inc. (685 canton street, Norwood, MA 020062 USA) 1987.
4. Bridges, J.E Milleta J. and Ricketts.L.W., “EMP Radiation and Protective techniques”, John Wiley and sons, USA 1976.
5. William Duff G., & Donald White R. J, “Series on Electromagnetic Interference and Compatibility”, Vol. 6. Weston David A., “Electromagnetic Compatibility, Principles and Applications”, 1991