Formulation of state equations in active RLC networks

The derivation of state equations in linear active RLC networks is considered and a computer-oriented algorithm for their formulation is given. In this work, the dependent sources are assumed to be controlled by other sources as well as the passive elements, and it is shown that all the state variables still can be chosen among inductor currents and capacitor voltages. In previous works, either one of these cases was not considered. The active RLC networks considered in this paper are general enough to contain ideal transformers, gyrators, and other types of elements which can be represented by dependent sources.