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

Claim 28:
29. The filter comprising the high-Q triple-mode dielectric resonance structure as claimed in claim 28, wherein, the cavity high-Q triple-mode dielectric resonance structure forms the degenerate triple-mode in axes X, Y and Z; a frequency of the degenerate triple-mode is acilusted by changing a dielectric constant; a surface of the dielectric resonance block, an inner wall of the cavity body, an inner wall of the cover plate, or an bottom of an tuning screw is pasted with dielectric constant thin films of different shapes and thicknesses; the dielectric constant thin films are made of ceramic dielectric and ferroelectric materials;
the tuning screw or a tuning disk is made of metal, or the tuning screw or the tuning disk is made of metal and a surface of the metal is electroplated with copper or silver; or the tuning screw or disk is made of medium; or the tuning screw or the tuning disk is made of a surface metallized dielectric;
and the tuning 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, a metal rod with a dielectric disk, a dielectric rod with a metal disk, and a dielectric rod with a dielectric disk.