Return to Electromagnetic Compatibility Home Page

Near-Field Shielding Effectiveness Calculator

Calculates the plane wave shielding effectiveness of various materials using the equation:
Shielding Effectiveness in dB equals reflection component plus absorption component
as described in the CVEL Shielding Theory Notes.

EM Source:
Electric Field Magnetic Field

Source to Shield Distance:
r :

Shielding Material:
Copper
Aluminum
Gold
Other
Conductivity  (x107S/m)
Relative Permeability

Shield Thickness:
t :

Shielding Frequency:
f :
Electric and Magnetic Fields Impinging on Shielding Slabs
Shielding Effectiveness:

For Plane Wave Shielding, use the
Plane Wave Shielding Effectiveness Calculator.

Reflection Loss (dB)
Absorption Loss (dB)
Shielding Effectiveness (dB)