Transformation Theory Applied to Linear Active and/or Nonbilateral Networks

A nonpassive and/or nonbilateral (linear) network can be represented analytically as a passive bilateral one in which the variables are subjected to an appropriate linear transformation. In contrast to the "dependent source" method of analysis, transformation theory offers not only a very general and elegant way of dealing with both the nonbilateral as well as the active character of devices, but through the existence of a considerable number of interpretive mechanisms such as geometric visualization in multidimensional spaces and the concept of normal coordinate transformations, it represents a relatively untapped storehouse of manipulative artifices that may ultimately provide a clearer understanding of this broader class of networks.