US 11,942,672 B2
Cavity high-Q triple-mode dielectric resonance structure and filter with resonance structure
Qingnan Meng, Hubei (CN)
Assigned to HONGKONG FINGU DEVELOPMENT COMPANY LIMITED, Hong Kong (CN)
Appl. No. 17/267,507
Filed by HONGKONG FINGU DEVELOPMENT COMPANY LIMITED, Hong Kong (CN)
PCT Filed Dec. 29, 2018, PCT No. PCT/CN2018/125162
§ 371(c)(1), (2) Date Feb. 10, 2021,
PCT Pub. No. WO2020/048063, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 201811026911.6 (CN), filed on Sep. 4, 2018.
Prior Publication US 2022/0352612 A1, Nov. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01P 1/20 (2006.01); H01P 1/208 (2006.01); H01P 7/06 (2006.01); H01P 7/10 (2006.01)
CPC H01P 1/2086 (2013.01) [H01P 7/06 (2013.01); H01P 7/105 (2013.01)] 40 Claims
OG exemplary drawing
 
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.