請問甚麼是 Skin Effect？

師弟

如題。

VR2UIO

轉載自《The ARRL Handbook for Radio Amateurs 2000》
Skin Effect

The resistance of a conductor to AC is different than its value for DC. A thick and near-perfect conductor (such as metal) conducts AC only to a Certain depth. The depth from the surface is proportional to the wavelength of the signal.

At high frequency, say 1MHz, all the signal current flows in very thin layer near the conductor's surface. As the result, the decreasing effective cross-section of the conductor's increases its resistances. This phenomenon is call skin effect.

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師弟

感謝版主。