US 12,272,852 B2
Dielectric filter
Jingpeng Li, Beijing (CN)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 18/037,666
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jul. 26, 2021, PCT No. PCT/CN2021/108432
§ 371(c)(1), (2) Date May 18, 2023,
PCT Pub. No. WO2022/110854, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 202022806470.0 (CN), filed on Nov. 27, 2020.
Prior Publication US 2023/0411815 A1, Dec. 21, 2023
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)] 10 Claims
OG exemplary drawing
 
1. A dielectric filter, comprising:
a body;
a first resonant unit arranged at a first side of the body;
a second resonant unit arranged at a second side of the body opposite to the first side; and
a groove formed at a middle position of the body and configured to partially separate the first resonant unit and the second resonant unit from each other, wherein
each of the first resonant unit and the second resonant unit comprises a first frequency resonant hole, a second frequency resonant hole and a coupling adjustment hole,
in each of the first resonant unit and the second resonant unit, the first frequency resonant hole and the second frequency resonant hole are located on different surfaces of the body,
the first frequency resonant hole has a first longitudinal extension line perpendicular to a second longitudinal extension line of the second frequency resonant hole, and
the coupling adjustment hole is located on another surface of the body and has a third longitudinal extension line parallel to the first longitudinal extension line or the second longitudinal extension line.