DUALITY TRANSFORMATION FOR NONRECIPROCAL AND NONSYMMETRIC TRANSMISSION-LINES

Duality transformation is introduced to the theory of generalized (non reciprocal and nonsymmetric) transmission lines making it possible to find solutions to problems in terms of solutions to dual problems with out having to go through the solution process, The generalized transmi ssion lines have emerged when more general media have been introduced to classical waveguide geometries, for example, microstrip lines on ch iral substrates. It is seen that there actually exist two duality tran sformations and the self-dual voltage and current solutions are propag ating waves in the transmission line, The transformation can be, e.g., applied to transform a nonsymmetric transmission line to a symmetric one.