A New Model for Exact Computation of Coupling between TE01δ Dielectric Resonators

Mode-Matching technique is applied to the analysis of coupling between TE_01δ -resonators, which are the key parameter for the TE_01δ - Mode bandpass filter design. Combination of the mode matching technique and a novel equivalent circuit for coupling calculation provides a technique which rigorously takes into account finite iris thickness, angular offset of the two coupling irises and higher order mode interactions between resonators, while overcoming the typical limitations of the approximate models. As an application of the analysis; a filter design example is demonstrated and validity of the approach is verified. Typical coupling curves, which are of practical importance in TE_01δ mode filter design are presented.