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US 12,512,598 B2Granted
Cavity filter, multiplexer, radio frequency (RF) device and base station antenna
AssigneeCommScope Italy S.r.l.
InventorsYangzhun Lv, Qing Mi, Xianxiang Li, Quan Cao
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Abstract
A cavity filter comprises a housing which defines an internal cavity, first and second resonators in the internal cavity, and a metal coupling sheet. The first resonator has first and second spaced apart coupling panels, and the second resonator has third and fourth spaced apart coupling panels. The metal coupling sheet has a first coupling section positioned between the first coupling panel and the second coupling panel and a second coupling section positioned between the third coupling panel and the fourth coupling panel.
Claims20
A cavity filter, comprising:
- a housing, which defines an internal cavity;
- a first resonator disposed in the internal cavity, where the first resonator has a first coupling panel at an upper edge of the first resonator and a second coupling panel spaced apart from the first coupling panel;
- a second resonator disposed in the internal cavity, where the second resonator has a third coupling panel at an upper edge of the second resonator and a fourth coupling panel spaced apart from the third coupling panel;
- a metal coupling sheet, which has a first coupling section positioned about midway between the first coupling panel and the second coupling panel and a second coupling section positioned about midway between the third coupling panel and the fourth coupling panel.
1 more element
A cavity filter, comprising:
- a housing, which defines an internal cavity;
- a first resonator disposed in the internal cavity, where the first resonator has a first coupling panel and a second coupling panel spaced apart from the first coupling panel;
- a second resonator disposed in the internal cavity, where the second resonator has a third coupling panel and a fourth coupling panel spaced apart from the third coupling panel;
- a metal coupling sheet, which has a first coupling section positioned between the first coupling panel and the second coupling panel and a second coupling section positioned between the third coupling panel and the fourth coupling panel,
- wherein the metal coupling sheet comprises a connecting section connected between the first coupling section and the second coupling section,
- wherein a through-hole for a tuning elements is provided on the connecting section of the metal coupling sheet, and
- wherein the cavity filter comprises dielectric blocks, and the metal coupling sheet is supported on the dielectric blocks.
4 more elements
A cavity filter, comprising:
- a housing, which defines an internal cavity;
- a first resonator disposed in the internal cavity;
- a second resonator disposed in the internal cavity;
- a metal coupling sheet, which comprises a first coupling section for coupling with the first resonator and a second coupling section for coupling with the second resonator, in which, the first coupling section and the first resonator form a first capacitance and a second capacitance, and the second coupling section and the second resonator form a third capacitance and a fourth capacitance,
- wherein the first capacitance and the second capacitance are configured to achieve mutual compensation, and
- wherein the third capacitance and the fourth capacitance are configured to achieve mutual compensation.
3 more elements
A cavity filter, comprising:
- a housing, which defines an internal cavity;
- a first resonator disposed in the internal cavity, where the first resonator has a first coupling panel and a second coupling panel spaced apart from the first coupling panel;
- a second resonator disposed in the internal cavity, where the second resonator has a third coupling panel and a fourth coupling panel spaced apart from the third coupling panel;
- a metal coupling sheet, which has a first coupling section positioned between the first coupling panel and the second coupling panel and a second coupling section positioned between the third coupling panel and the fourth coupling panel,
- wherein each of the first through fourth coupling panels comprises a flat surface that is parallel to a bottom surface of the housing.
2 more elements
Dependencies are inferred from the claim text.