Analysis of Nonhomogeneous Helical Systems Using Electrodynamical Methods

Models of helical systems are composed using surfaces with isotropical and anisotropical conductivity and magnetodielectric layers among them. This chapter considers application of an electrodynamical method for analysis of nonhomogeneous systems. Helical systems with round and rectangular cross sections are applied in practice. Isotropically and anisotropically conducting planes are used in the models of helical systems with elongated rectangular cross sections when the system is homogeneous along the helix conductor. In addition to symmetrical helical systems that are systems with plane symmetry, systems with axial symmetry are possible. Analysis of helical systems with plane symmetry can be simplified using an electric wall in the symmetry plane. The chapter utilizes the models of helices containing internal and external shields for modeling of the second and third sections of the axially symmetrical helical system. Results of calculations using the electrodynamical method correspond to helical systems containing infinitely thin helical conductors and small gaps between neighbor conductors.