关键词: 有耗媒质, 表面阻抗, 复折射

Abstract: Surface impedances of lossy mediums, which do not meet the requirements for impedance boundary conditions (IBC), are analyzed in this paper. The expressions of surface impedance for both plane and cylindrical multilayers are given. The mode and average surface impedances are suggested. An example of application is also given to show the validity of the methods in this paper. The calculated results of RCS are in good agreement with the experimental data for the object composed of wedge and cylinder, which is loaded with slotted surface impedance.

Key words: lossy medium, surface impedance, birefringence