Comments on “Analysis of wide inclined slot coupled narrowwall coupler between dissimilar rectangular waveguides”[and reply]

Comments by D. Satyanarayana and Ajay Chakrabarty claim that the original paper see IEEE Trans. Antennas Propagat., vol. AP-37, no. 9, p. 1116-23, 1989] has not considered the contribution of TE_no mode in the scattered fields in the waveguide region and imply that the Green's function employed is incomplete. However there is a discussion on the singular contribution with a mathematical expression containing the appropriate Dirac delta function. It is also obvious that the specific terms of the cavity Green' s functions that treat the waveguide wall thickness do not have such a singular contribution present. Therefore, Green's functions employed in the paper are complete and rigorous. D. Satyanarayana and Ajay Chakrabarty reply to these further comments by the original author