US 12,244,285 B2
LC filter, and diplexer and multiplexer using same
Hiroto Motoyama, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Oct. 12, 2022, as Appl. No. 17/964,082.
Application 17/964,082 is a continuation of application No. PCT/JP2021/016621, filed on Apr. 26, 2021.
Claims priority of application No. 2020-090702 (JP), filed on May 25, 2020.
Prior Publication US 2023/0029621 A1, Feb. 2, 2023
Int. Cl. H03H 7/01 (2006.01); H03H 7/12 (2006.01); H03K 17/51 (2006.01); H03H 1/00 (2006.01)
CPC H03H 7/1791 (2013.01) [H03H 7/12 (2013.01); H03K 17/51 (2013.01); H03H 2001/0085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An LC filter comprising:
a multilayer body including a plurality of dielectric layers that are stacked;
a first electrode and a second electrode each having a plate shape and provided in different dielectric layers in the multilayer body;
a first capacitor electrode, a second capacitor electrode, and a third capacitor electrode each defining a capacitor between the second electrode and a corresponding one of the first capacitor electrode, the second capacitor electrode, and the third capacitor electrode;
a first inductor via including an end connected to the first capacitor electrode and another end coupled to the first electrode;
a second inductor via including an end connected to the second capacitor electrode and another end connected to the first electrode;
a third inductor via including an end connected to the third capacitor electrode and another end coupled to the first electrode;
a fourth capacitor electrode facing the first capacitor electrode and the second capacitor electrode;
a fifth capacitor electrode facing the second capacitor electrode and the third capacitor electrode; and
a sixth capacitor electrode facing the third capacitor electrode and the first capacitor electrode.