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

Claim 0:
1. A cavity high-Q triple-mode dielectric resonance structure applied to a filter, comprising a cavity with a dielectric resonance block and a dielectric support frame disposed inside, and a cover plate, wherein, the dielectric resonance block is of a cube-like solid structure; the dielectric support frame is respectively connected with the dielectric resonance block and an inner wall of the cavity; the dielectric resonance block and the dielectric support frame form a triple-mode dielectric resonance rod; a dielectric constant of the dielectric support frame is less than a dielectric constant of the dielectric resonance block;
a ratio K of the size of a single side of the inner wall of the cavity and the size of a corresponding single side of the dielectric resonance block is as follows: when K is greater than or equal to a conversion point 1 and is less than or equal to a conversion point 2, a Q-value of a higher-order mode adjacent to a base mode of the triple-mode dielectric resonance structure is converted into a Q-value of the base mode of the triple-mode dielectric resonance structure, a resonance frequency of the base mode after conversion is equal to a resonance frequency of the base mode before conversion, a Q-value of the base mode after conversion is greater than a Q-value of the base mode before conversion, and a Q-value of the higher-order mode adjacent to the base mode after conversion is less than a Q-value of the higher-order mode adjacent to the base mode before conversion;
the triple-mode dielectric resonance structure is internally provided with a coupling structure for changing orthogonal properties of electromagnetic field of a degenerate triple-mode in the cavity;
and the triple-mode dielectric resonance structure is internally provided with a frequency tuning device for changing tuning frequency of the degenerate triple-mode in the cavity.