Skin Effect PCB Board

Dated:2017-11-28      Popularity:1365

Although there are many factors that impede current flow in printed circuit boards, skin effect PCBs limit the flow of current by reducing the conductive area at high frequencies through passive resistance or unwanted inductances and capacitances.

At high frequencies, inductive inductance causes current to flow through the surface of the conductor rather than the entire conductor, which increases the resistance of the conductor. This effect is similar to any available resistive effect that prevents current flow, but it can increase as the frequency increases.

Skin effects also cause problems in high-speed links and data carriers. Due to frequent changes in current values, data lines may create unwanted passive components.

Since current flows evenly around the conductor, both sides of the conductor and ground line must be considered when making the calculation. Cause its effect only exists on high frequency circuits, so DC or low frequency system stands as an exception.

Since no compensation mechanism can be included at higher frequencies, the solution to solve skin effect is both space-consuming and simple.

For data carriers, the size of feed mechanism can be increased to reduce the resistance, but this can lead to some difficulties to PCB design.

This seems like a cliché, but it is the simplest solution to most problems. Determining the operating frequency and copper thickness and dielectric selection must be optimized to avoid such problems.

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