Waveguide band pass filters with increased stop band attenuation

Band pass filters are base elements of receiving-transmitting systems for wireless telecommunications. Designing such systems in millimeter wave range greatly differs from standard approaches, developed for the technologically carefully studied centimeter range. Band pass filters based on the all-metal inserts placed in E-plane of rectangular waveguide are the most technologically acceptable in the millimeter range, due to well reproducible planar technology of resonator fabrication. But, essential defect of such filters designing ideology is a restrain factor of their broad utilizing. At first, it is necessary to point to the presence in them of the closely situated parasite pass band that gives a problem of compacting and compatibility of some datapaths in their use