US 12,451,573 B2
Dielectric filter
Tatsunori Kan, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto-Fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Oct. 24, 2023, as Appl. No. 18/492,969.
Application 18/492,969 is a continuation of application No. PCT/JP2022/013129, filed on Mar. 22, 2022.
Claims priority of application No. 2021-074258 (JP), filed on Apr. 26, 2021.
Prior Publication US 2024/0072403 A1, Feb. 29, 2024
Int. Cl. H01P 1/205 (2006.01); H01P 1/203 (2006.01)
CPC H01P 1/20345 (2013.01) [H01P 1/205 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A dielectric filter comprising:
a stack body including a plurality of dielectric layers and having a cuboid shape;
a first plate electrode and a second plate electrode disposed inside the stack body apart from each other in a stacking direction;
a plurality of resonators disposed between the first plate electrode and the second plate electrode and configured to extend in a first direction orthogonal to the stacking direction; and
a first shield conductor and a second shield conductor disposed on a first side surface and a second side surface of the stack body, respectively, and connected to the first plate electrode and the second plate electrode, both the first side surface and the second side surface being perpendicular to the first direction,
the plurality of resonators being disposed inside the stack body side by side in a second direction orthogonal to both the stacking direction and the first direction,
a first end of each of the plurality of resonators being connected to the first shield conductor, and a second end of each of the plurality of resonators being separated from the second shield conductor,
the first end of each of the plurality of resonators being provided with a first cutout, and
the first cutout being filled with dielectric material.