US 12,170,511 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. 12, 2022, as Appl. No. 17/964,080.
Application 17/964,080 is a continuation of application No. PCT/JP2021/016620, filed on Apr. 26, 2021.
Claims priority of application No. 2020-090710 (JP), filed on May 25, 2020.
Prior Publication US 2023/0035574 A1, Feb. 2, 2023
Int. Cl. H03H 7/00 (2006.01); H01F 27/28 (2006.01); H01F 27/40 (2006.01); H01G 4/005 (2006.01); H01G 4/40 (2006.01); H03H 7/01 (2006.01)
CPC H03H 7/0115 (2013.01) [H01F 27/2804 (2013.01); H01F 27/40 (2013.01); H01G 4/005 (2013.01); H01G 4/40 (2013.01); H01F 2027/2809 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An LC filter that transfers a signal from an input terminal to an output terminal, the LC filter comprising:
a multilayer body including a plurality of dielectric layers layered therein;
a first electrode and a second electrode that are plate shaped and provided on different dielectric layers from each other in the multilayer body;
a first capacitor electrode and a second capacitor electrode that each define a capacitance between itself and the second electrode;
a first inductor via connected with the first electrode and the first capacitor electrode;
a second inductor via connected with the first electrode and the second capacitor electrode; and
a first ground via and a second ground via that connect the first electrode and the second electrode; wherein
the first inductor via and the first capacitor electrode define a first resonance circuit that receives the signal, from the input terminal; and
the second inductor via and the second capacitor electrode define a second resonance circuit that transfers the signal, to the output terminal.