IMAGE METHOD FOR ELECTROSTATIC PROBLEMS INVOLVING PLANAR ANISOTROPIC MEDIA BASED ON TRANSMISSION-LINE ANALOGY

Static problems involving anisotropic media have long been in the inte rest of geoelectromagneticists. Solving problems of that kind have bee n, however, quite cumbersome and lengthly, involving coordinate scalin g procedures with lots of indexed variables. The image method stands a s an attractive alternative since no coordinates are involved and the image concept gives a quasi-physical quantity which can be handled jus t like ordinary physical sources. The present paper gives a simple met hod for deriving the image sources based on a transmission-line analog y. The problems treated are PEC (perfectly electrically conducting) an d PMC (perfectly magnetically conducting) boundaries together with ani sotropic impedance boundaries and interfaces of two anisotropic media with similar anisotropies.