Reciprocity in Linear Networks

Abstract

In each case, reciprocity relations represent connections between two transfer factors and transfer impedances or admittances of a linear system, respectively. These relations provide a basis for a series of measuring methods and allow in many cases also for the calculation of relations which would be only achieved with large calculating effort otherwise. In networks of a physical structure they are identical to the symmetry of the ρ- and γ-matrices with respect to the main diagonal represented in Sect. 2.2 and Chap. 4. In this chapter, special conclusions are drawn for two-port networks, i.e. for the interconnection of two pairs of coordinates. By means of the well-known characteristics of tranducer two-port networks, it is particularly demonstrated that also reciprocity relations exist for systems which comprise different physical structures. These relations are of particular practical importance.