Frequency filter and its method of realization

摘要

A frequency filter incorporates a structure with, on one surface, two end evanescent zones (25) and at least one waveguide zone (24) between the evanescent zones. The waveguide zone and the evanescent zones form a single closed cavity, which is partitioned by at least two resonating elements (20) embedded in the cavity at the level of placement zones and that contribute to delimiting the waveguide zone and the evanescent zones. An independent claim is also included for the production of this frequency filter.