US 11,757,429 B2
Hybrid filter device and multiplexer
Masanori Kato, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Mar. 24, 2020, as Appl. No. 16/828,034.
Application 16/828,034 is a continuation of application No. PCT/JP2018/031322, filed on Aug. 24, 2018.
Claims priority of application No. 2017-192101 (JP), filed on Sep. 29, 2017.
Prior Publication US 2020/0228094 A1, Jul. 16, 2020
Int. Cl. H03H 9/54 (2006.01); H03H 9/05 (2006.01); H03H 9/70 (2006.01)
CPC H03H 9/542 (2013.01) [H03H 9/0557 (2013.01); H03H 9/70 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hybrid filter device comprising: a substrate; an acoustic wave device including an acoustic wave resonator; a first passive device including an inductor element or an inductor element and a capacitance element; and a plurality of ground terminals;
wherein the acoustic wave device is mounted on the one main surface or the other main surface of the substrate,
the first passive device is mounted on the one main surface or the other main surface on which the acoustic wave device is not mounted,
the acoustic wave device and the first passive device are electrically connected to each other,
the acoustic wave device overlaps the first passive device when the hybrid filter device is viewed in a direction perpendicular to one main surface of the substrate,
the plurality of ground terminals are provided on the other main surface of the substrate,
a second passive device is provided on the main surface of the substrate which the acoustic wave device is mounted, and
the second passive device overlaps the first passive device when viewed in a direction perpendicular to one main surface of the substrate.