RECIPROCITY RELATIONS IN WAVE-GUIDE JUNCTIONS

The Lorentz reciprocity condition is applied to junctions composed of reciprocal media which connect uniform but otherwise arbitrary wavegui des. An expression relating the forward and reverse transmission coeff icients is derived and factored into two terms: the first involving th e phase of the reference impedance in the guide, and the second a new reciprocity factor. The usual condition equating the forward and rever se transmission coefficients is shown not to hold in the general case. Experimental evidence supporting the theoretical results is presented .