US 12,191,835 B2
LC filter
Hiroto Motoyama, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Oct. 21, 2022, as Appl. No. 17/970,648.
Application 17/970,648 is a continuation of application No. PCT/JP2021/017900, filed on May 11, 2021.
Claims priority of application No. 2020-090711 (JP), filed on May 25, 2020.
Prior Publication US 2023/0044859 A1, Feb. 9, 2023
Int. Cl. H03H 7/00 (2006.01); H03H 1/00 (2006.01); H03H 7/01 (2006.01); H03H 7/03 (2006.01)
CPC H03H 7/03 (2013.01) [H03H 1/00 (2013.01); H03H 7/0138 (2013.01); H03H 7/0161 (2013.01); H03H 7/1741 (2013.01); H03H 2001/0085 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An LC filter comprising:
an input terminal;
an output terminal;
a multilayer body including a plurality of dielectric layers;
a first electrode and a second electrode provided on different dielectric layers of the plurality of dielectric layers from each other in the multilayer body;
connection electrodes connecting the first electrode and the second electrode;
a first capacitor electrode, a second capacitor electrode, a third capacitor electrode, and a fourth capacitor electrode each opposing the second electrode;
a first inductor via connected with the first capacitor electrode;
a second inductor via connected with the second capacitor electrode;
a third inductor via connected with the third capacitor electrode; and
a fourth inductor via connected with the fourth capacitor electrode; wherein
one end of the first inductor via is connected with the input terminal with the first capacitor electrode interposed therebetween;
another end of the first inductor via is connected at a position on one of the connection electrodes between the first electrode and the second electrode;
the second inductor via is connected between the first electrode and the second capacitor electrode;
the third inductor via is connected between the first electrode and the third capacitor electrode;
one end of the fourth inductor via is connected with the output terminal with the fourth capacitor electrode interposed therebetween; and
another end of the fourth inductor via is connected at a position on one of the connection electrodes between the first electrode and the second electrode.