Patent ID: 11942672
Assignee: HONGKONG FINGU DEVELOPMENT COMPANY LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 30:
31. The filter comprising the high-Q triple-mode dielectric resonance structure as claimed in claim 22, wherein, the cavity high-Q triple-mode dielectric resonance structure is internally provided with at least two coupling devices for changing orthogonal properties of the electromagnetic field of the degenerate triple-mode in the cavity and are not in parallel arrangement:
each of the at least two coupling device comprises holes/grooves disposed on end surfaces of the dielectric resonance block, center lines of the holes or the grooves are parallel to edges perpendicular to the end surfaces with the holes or the grooves of the dielectric resonance block;
or comprises chambers/cut corners disposed at inner corners of the cavity,
or comprises holes/grooves disposed on an end surfaces of the dielectric resonance block and the chambers/cut corners disposed besides edges of the cavity,
or comprises tap wires or/sheets disposed on non-parallel planes in the cavity;
a depth of each of the holes is of a through or /partial hole structure according to a required coupling quantity;
the size of each of the holes affects a magnitude of a coupling quantity;
each of the holes/grooves is circular, rectangular or polygonal; after the holes/grooves are formed, under a condition of maintaining frequency, a side length of the dielectric resonance block increases, and a Q-value slightly decreases;
coupling screws are disposed on coupling tuning structures in directions parallel to the holes; the coupling screw is made of metal; or the coupling screw is made of metal, a surface of which is electroplated with copper or sliver; or the coupling screw is made of medium; or the coupling screw is made of medium, a surface of which is the metallized;
and the coupling screw is in a shape of any one of a metal rod, a dielectric rod, a metal disk, a dielectric disk, a metal rod with a metal disk, and a metal rod with a dielectric disk, a dielectric rod with a metal disk, and a dielectric rod with a dielectric disk.