CHARACTERIZATION OF OFF-SLOT DISCONTINUITY IN UNILATERAL FIN LINE

A new type of fin line discontinuity, which consists of a rectangular conducting strip placed transversely on the back side of the air diele ctric interface containing the slot, is characterized in this work. Mo deling of the fin line cavity containing the discontinuity is carried out using hybrid mode analysis, and then the Transverse Resonance Tech nique is used to extract equivalent circuit parameters of the disconti nuity. Suitable sets of basis functions are chosen for accurately repr esenting the field in the slot and the current on the strip. Calculate d results are compared with the measured results for a sample disconti nuity to validate the choice of the basis functions.