Lalit kumar - Skin effect

Calculates the effective skin depth (1/e) for common conducting materials using the formula and data referenced below .


Select the conducting material:		Resistivity (?):	x 10^-8 O/m
Enter the required frequency:	MHz	Relative Permeability (µr):
		Skin Effect Depth:	um

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From Transmission Lines and Networks by Walter C. Johnson, McGraw-Hill 1963 p58.

Nominal depth of penetration for a conductor

Where ? = Is the resisitivity of the conductor in O/m

f= frequency in Hertz

&nbs p; µ = Is the absolute magnetic permeability of the conductor

The absolute magnetic permeability (µ) = µo x µr

µo = 4p x 10^-7 H/m

The values for µr are from Transmission Line Design Handbook by Brian C Wadell, Artech House 1991 Table 9.3.2 page 446.

The values for ? are from CRC Handbook of Chemistry and Physics 1st Student Edition 1998 page F-88 and are for high purity elements at 20°C.