Skin effect
Alternating currants do not uniformly occupy the entire cross section of the conductor, rather inductance effect in the conductor deflects the current towards the surface of the conductor, whereby this deflection increases with the frequency.
The resistive attenuation of a transmission line increases with the frequency as a result of this skin effect.
The skin depth (equivalent thickness of the layer in which current flows) can be determined using

VSWR-Value
The ratio between the value of the largest and the smallest voltages on a loss-free line is known as the ripple or voltage standing wave ratios (where 1
m
1&inf;). The reciprocal value of the VSWR is known as the inverse voltage standing wave ratio m (where 0
m
1).
(VSWR = Voltage standing wave ratio)
The value of is linked with the => reflection coefficient r on s transmission line according to the equation
Derating diagram![]() |
| Measurement is according to DIN 41640 part 3 whereas all contacts are connected on series. For test procedure - product no. 3008W8SXX99A10X has been equipped with 132C11049X and 3008W8PXX99A10X with 131C11049X |