In this paper, the effective skin depth which provides a useful evaluation for field penetration in multilayer coated conductor is proposed. The reflection on the interface between the adjacent conductors is considered in theoretical derivation. It is found that the effective skin depths of the gold and gold-nickel coated copper rapidly vary with the thickness of the outer layer (gold) when the gold thickness is less than twice gold skin depths and achieve stabilization as the gold thickness increases to five times gold skin depths.
"Effective Skin Depth for Multilayer Coated Conductor," Progress In Electromagnetics Research M,
Vol. 9, 1-8, 2009. doi:10.2528/PIERM09071411
1. Hiraoka, T., T. Tokumitsu, and M. Aikawa, "Very small wideband MMIC magic T's using microstrip lines on a thin dielectric film," IEEE Transactions on Microwave Theory and Techniques, Vol. 37, No. 10, 1569-1575, 1989. doi:10.1109/22.41003
2. Wentworth, S. M., M. E. Baginski, D. L. Faircloth, S. M. Rao, and L. S. Riggs, "Calculating effective skin depth for thin conductive sheets," Antennas and Propagation Society International Symposium 2006, IEEE, 4845-4848, 2006. doi:10.1109/APS.2006.1711728
3. Thiel, W. and L. P. B. Katehi, "A surface impedance approach for modeling multilayer conductors in FDTD," Microwave Symposium Digest, 2002 IEEE MTT-S, IEEE, Vol. 2, 759-762, 2002.
4. Klein, C. A., "Microwave shielding effectiveness of EC-coated dielectric slabs," IEEE Transactions on Microwave Theory and Techniques, Vol. 38, No. 3, 321-324, 1990. doi:10.1109/22.45352