Some restrictions for the representation of electro-magnetic systems as transmission-line coupled networks

In this paper we consider electro-magnetic systems where model complexity can be reduced by means of network and transmission line theory. However, the modeling concepts are derived under certain conditions from Maxwell´s equations. We will discuss the restrictions regarding the interconnections of networks and transmission lines that can be used for the development of models of electromagnetic systems with a reduced complexity. Furthermore, we show the relationship between the magnetic field of wires calculated by Biot-Savart´s formula and transmission line theory.