US 12,300,867 B2
Dielectric filter
Jingpeng Li, Beijing (CN)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 18/254,452
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 15, 2021, PCT No. PCT/CN2021/118484
§ 371(c)(1), (2) Date May 25, 2023,
PCT Pub. No. WO2022/110987, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 202022806470.0 (CN), filed on Nov. 27, 2020.
Prior Publication US 2024/0006732 A1, Jan. 4, 2024
Int. Cl. H01P 1/20 (2006.01); H01P 1/213 (2006.01); H01P 7/10 (2006.01)
CPC H01P 1/2002 (2013.01) [H01P 1/213 (2013.01); H01P 7/105 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A dielectric filter, comprising:
a body;
at least one dual mode resonant unit arranged in the body, each dual mode resonant unit at least having a first frequency resonant hole and a second frequency resonant hole;
at least one single mode resonant unit arranged in the body and adjacent to the at least one dual mode resonant unit, each single mode resonant unit having a third frequency resonant hole; and
a groove structure formed in the body and configured to partially separate the at least one single mode resonant unit and the at least one dual mode resonant unit adjacent thereto;
wherein the first frequency resonant hole and the second frequency resonant hole are located on different surfaces of the body, and the first frequency resonant hole has a first longitudinal extension line perpendicular to a second longitudinal extension line of the second frequency resonant hole;
wherein the third frequency resonant hole is located on a surface of the body, and the third frequency resonant hole has a third longitudinal extension line parallel to the first longitudinal extension line;
wherein an orthogonal projection of the second frequency resonant hole onto a plane perpendicular to the first longitudinal extension line is located between an orthogonal projection of the first frequency resonant hole onto the plane and an orthogonal projection of the third frequency resonant hole onto the plane.