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What is your favorite “explanation“ of the skin-effect in conductors? How do you explain it to yourself? With the Ampere's and Faraday's laws in the integral form? Or with the eddy currents (same thing, but maybe the most popular one)? Or with the Lorentz contraction and Coulomb's low (the most fundamental one)? To me, it is just a solution of macroscopic Maxwell's equations with constitutive equations for conductor and boundary conditions on surface of conductor. As it is illustrated in this short video. The instantaneous current density in stripline conductor at 0.1 MHz, 10 MHz, 1 GHz and 30 GHz is computed with Simbeor 3DTF solver. The current distribution is uniform at 0.1 KHz. At higher frequencies we see the process of energy absorption by conductor - exponentially decreasing wave going inside the conductor. Corresponding current does not “flow“ anywhere as you can literally see - it goes back and forth as the result of the absorption and the signal energy is absorbed in thinner and thinner layer and more at the conductor corners. Moreover, the current inside the conductor “flows“ in the opposite direction at some moments. The math of the process is simple, but not intuitive, as almost everything related to the Maxwell's equations. H, E and J at 10 MHz for that example are at More on the modeling conductors is at See more videos on currents in conductors computed with Simbeor software at I hope this helps you understand the skin-effect in conductors better. If you have any feedback or questions, please let me know. #simbeor #electromagnetics #signal_integrity
