Electromagnetic field representations and computations in complex structures Ⅲ: network representations of the connection and subdomain circuits

摘要

When complex structures are divided into subdomains for electromagnetic field computations, it is necessary to specify which of the tangential electromagnetic field components at the boundaries may be regarded as independent and which have to be treated as dependent. In this third of our three-part study, we establish some rules for the choice of primary and secondary fields at the connection interface, i.e. at the interface between adjacent subdomains. The discretized field continuity equations at the connection interface provide the connection network whose canonical forms are illustrated, and it is shown that the normalized scattering matrix is symmetric, orthogonal and unitary.