Modeling of electrically tunable transmission line phase shifter based on liquid crystal

This paper present the numerical modeling of transmission lines taking into account the special material properties when liquid crystals (LC) are used as steerable anisotropic dielectrics. At first a short introduction of the properties of LC is given as well as the theoretical models used for the physical simulation of LCs in terms of molecular dynamics. Then, a full wave method to analyze the electrical behavior of LC filled waveguide structures is described. The combination of molecular dynamic and full wave simulation allows finally a systematic investigation of these structures.