A new direct method for SE dB determination

Phenomena taking place into an electromagnetic shield are complex (absorption, reflection, transmission). They are determined by material/shield macroscopic parameters (epsiv, mu, sigma), its thickness, radiationpsilas frequency and incidence angle. The paper deals with an original method for visualization and measurement of shielding effectiveness. This method has the advantage of simplicity and validates for the first time theoretical predictions as opposed to TEM cell method based on mathematical isomorphism (infinite plane shield vs. coaxial transmission lines). Even if it is formally accurate, it has not been experimentally validated up to present, in the area of electrically thick samples, according to many works in the field.