1results about How to "Be selective" patented technology

This invention discloses a terahertz filter, relating to the field of filter technology, comprising: a flange with four symmetrically arranged metal resonant cavities along its cross-section, each adjacent metal resonant cavity having a coupling structure; two standard waveguide transition structures, each including a transition structure and a transmission structure, the transition structure including a transition block and a reverse step structure on one side thereon, and the transmission structure including a transmission block on the other side of the transition block; and two gaskets disposed on both sides of the flange, each gasket having a gap waveguide structure in its center, the gap waveguide structure including a bed of nails structure and an impedance transformation structure. This invention integrates traditional waveguide design methods into the flange, achieving excellent electrical performance with low loss and high selectivity in a compact size. The designed gap waveguide structure further improves the performance of this filter.