US 12,355,421 B2
Acoustic wave device
Kenta Maeda, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Aug. 2, 2023, as Appl. No. 18/229,210.
Claims priority of application No. 2022-132779 (JP), filed on Aug. 23, 2022.
Prior Publication US 2024/0072759 A1, Feb. 29, 2024
Int. Cl. H03H 9/02 (2006.01); H03H 9/145 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/02834 (2013.01) [H03H 9/02559 (2013.01); H03H 9/6483 (2013.01); H03H 9/145 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An acoustic wave device comprising:
a first acoustic wave filter including a first piezoelectric substrate and a plurality of first resonators on the first piezoelectric substrate; and
a second acoustic wave filter including a second piezoelectric substrate and a plurality of second resonators on the second piezoelectric substrate; wherein
the first piezoelectric substrate and the second piezoelectric substrate are spaced apart from each other such that the plurality of first resonators and the plurality of second resonators are opposed to each other;
the plurality of first resonators include a first heat-generation resonator having a highest temperature in the first acoustic wave filter during use;
the plurality of second resonators include a second heat-generation resonator having a highest temperature in the second acoustic wave filter during use; and
a heat generation range of the first heat-generation resonator and a heat generation range of the second heat-generation resonator do not overlap each other in plan view.