EE 3320 Lecture : Notes 10
Document Summary
In the previous material we discovered that when incident upon a good conductor the electric and magnetic fields of an em wave attenuate very quickly at the boundary surface. We saw that the figure of merit for this attenuation is the skin depth , where. It is clear that varies inversely with the frequency and/or the conductivity, , of the material. ) the skin depth is zero and no time-varying electric or if a material is a perfect conductor ( magnetic fields will exist within the perfect conductor (recall. E or electromagnetic energy is guided along the surface by the conductor. Alternately we could state that for a conductor of finite conductivity at high frequencies the skin depth is proportionally small and the currents driven in the conductor exist within the outer skin of the conductor. For the same reason, hollow tubular conductors are used instead of solid conductors in outdoor television antennas.
