AP7301 ELECTROMAGNETIC INTERFERENCE AND COMPATIBILITY

AP7301 ELECTROMAGNETIC INTERFERENCE AND COMPATIBILITY

UNIT I           EMI/EMC CONCEPTS

EMI-EMC definitions and Units of parameters; Sources and victim of EMI; Conducted and Radiated EMI Emission and Susceptibility; Transient EMI, ESD; Radiation Hazards. 

UNIT II          EMI COUPLING PRINCIPLES

Conducted, radiated and transient coupling; Common ground impedance coupling ; Common mode and ground loop coupling ; Differential mode coupling ; Near field cable to cable coupling, cross talk ; Field to cable coupling ; Power mains and Power supply coupling. 

UNIT III         EMI CONTROL TECHNIQUES

Shielding- Shielding Material-Shielding integrity at discontinuities, Filtering- Characteristics of FiltersImpedance and Lumped element filters-Telephone line filter, Power line filter design, Filter installation and Evaluation, Grounding- Measurement of Ground resistance-system grounding for EMI/EMCCable shielded grounding, Bonding, Isolation transformer, Transient suppressors, Cable routing, Signal control. EMI gaskets 

UNIT IV         EMC DESIGN OF PCBS

EMI Suppression Cables-Absorptive, ribbon cables-Devices-Transient protection hybrid circuits ,Component selection and mounting; PCB trace impedance; Routing; Cross talk controlElectromagnetic Pulse-Noise from relays and switches, Power distribution decoupling; Zoning; Grounding; VIAs connection; Terminations. 

UNIT V         EMI MEASUREMENTS AND STANDARDS

Open area test site; TEM cell;  EMI test shielded chamber and shielded ferrite lined anechoic chamber; Tx /Rx Antennas, Sensors, Injectors / Couplers, and coupling factors; EMI Rx and spectrum analyzer; Civilian standards-CISPR, FCC, IEC, EN; Military standards-MIL461E/462. Frequency assignment - spectrum conversation.  British VDE standards, Euro norms standards in japan comparisons. EN Emission and Susceptibility standards and Specifications.

REFERENCES: 

1. V.P.Kodali, “Engineering EMC Principles, Measurements and Technologies”, IEEE Press,  Newyork,  1996 

2. Clayton R.Paul,” Introduction to Electromagnetic Compatibility”, John Wiley Publications, 2008 3. Henry W.Ott.,”Noise Reduction Techniques in Electronic Systems”, A Wiley Inter Science Publications, John Wiley and Sons, New york, 1988. 

4. Bemhard Keiser, “Principles of Electromagnetic Compatibility”, 3rd Ed, Artech house, Norwood, 1986. 

5. Don R.J.White Consultant Incorporate, “Handbook of EMI/EMC”, Vol I-V, 1988.