atlc is a computer aided design (CAD) package for the design and analysis of electrical transmission lines and directional couplers of totally arbitrary cross section and an arbitrary number of different dielectrics. By analysis, it is assumed one requires finding the electrical properties of a transmission line or coupler, where the physical dimensions of the device are known. By design, it is assumed one requires a transmission line or coupler to have certain electrical properties and one wishes to find how to physically realise such a structure
