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

Claim 29:
30. 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 which are used for changing the 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 cut corners/chamfers/grooves disposed on edges of the dielectric resonance block,
or comprises chamfers/cut corners disposed at inner corners of the cavity,
or comprises the cut corners/chamfers/grooves disposed beside edges of the dielectric resonance block and chamfers/cut corners beside edges of the cavity,
or comprises tap wires or/sheets disposed on non-parallel planes in the cavity;
each of the cut corners is in a shape of a triangular prism or cuboid or a sector; after corner cutting, under a condition of maintaining frequency, a side length of the dielectric resonance block increases, and a Q-value decreases slightly;
a depth of each of the cut corners or a hole is of a through or partial cut corner/partial hole structure according to a required coupling quantity;
the size of each of the cut corners/chamfers/holes affects a magnitude of a coupling quantity;
coupling screws are disposed on coupling tuning structures in directions perpendicular or parallel to the cut corners; 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 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.