Читать книгу Introduction To Modern Planar Transmission Lines - Anand K. Verma - Страница 163

The circuit model helps to understand the electrical property of a medium. It is further useful for simulating the electrical responses of a medium. The electrical property of a dielectric medium is expressed through relative permittivity that shows the electric energy storage ability of the medium. The capacitor also stores electric energy. Therefore, a dielectric medium is modeled as a capacitor. The loss in a medium is due to the dissipation of energy that is modeled as a resistor. Similarly, the permeability of a medium, such as an inductor, shows its ability to store magnetic energy. Therefore, the permeability of a medium is modeled as an inductor [B.10–B.12].