MODELING OF CONDUCTOR-LOADED RESONATORS AND FILTERS IN RECTANGULAR ENCLOSURES

Full-wave modeling of conductor-loaded resonators in rectangular enclo sures and the associated coupling structure is presented, The modeling yields generalized scattering matrices of the cylindrical conductor-l oaded resonators in rectangular waveguides, By applying short and open conditions and cascading procedure, resonant frequencies, field distr ibutions of the resonator, and coupling coefficients between two cavit ies through an iris are obtained, The computed results are compared wi th the measured data and both are in good agreement, A four- and an ei ght-pole dual-mode elliptic-function filter were designed, constructed , and tested, Measured frequency responses of the filters verify the t heory.