The Fundamentals of EMC (EMC 101)
This paper, “The Fundamentals of EMC (EMC 101)” from Global EMC UK Ltd., introduces Electromagnetic Compatibility (EMC) and its relationship to Electromagnetic Interference (EMI). It explains that EMI – unwanted noise disrupting electrical/electronic systems – is the problem EMC seeks to solve. The approach involves defining key concepts like EM waves, frequency (f), wavelength (λ = c/f), coupling mechanisms (conducted, radiated, capacitive, inductive), sources of EMI (industrial, residential, natural - solar flares, lightning) and associated risks including health concerns and device malfunction. The paper highlights that as devices become smaller and operate at higher frequencies like 2.4 GHz Wi-Fi (λ ≈12cm), susceptibility to EMI increases. It notes potential consequences range from data compromise to system failure.
