Acoustic wave device
AssigneeMurata Manufacturing Co., Ltd.
InventorKenta Maeda
Life of this patent
Estimating the term…
Abstract
An acoustic wave device includes a first acoustic wave filter including a first piezoelectric substrate and first resonators on the first piezoelectric substrate, and a second acoustic wave filter including a second piezoelectric substrate and second resonators on the second piezoelectric substrate. The first and second resonators are opposed to each other with a gap therebetween. The first and second resonators each include a heat-generation resonator in which a heat generation range has a highest temperature at a time of signal application. The heat generation ranges of the heat-generation resonators do not overlap each other in plan view.
Claims18
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.
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;
- each of the plurality of first resonators includes a heat generation range;
- each of the plurality of second resonators includes a heat generation range;
- and
- the heat generation range with a smallest area in the plurality of first resonators and the heat generation range with a smallest area in the plurality of second resonators do not overlap each other in plan view.
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 first acoustic wave filter includes a first input terminal to receive input of a signal to the first acoustic wave filter;
- the second acoustic wave filter includes a second input terminal to receive input of a signal to the second acoustic wave filter;
- and
- a heat generation range of the first resonator to receive, from the first input terminal, input of the signal first among the plurality of first resonators and a heat generation range of the second resonator to receive, from the second input terminal, input of the signal first among the plurality of second resonators do not overlap each other in plan view.
Dependencies are inferred from the claim text.