Surface Acoustic Wave Device for Reducing Noise
AssigneeRichWave Technology Corp.
InventorsShih-Meng Lin, Shih-Che Chen
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Abstract
An acoustic wave device includes a piezoelectric substrate and a series-coupled transducer set. The piezoelectric substrate has a first surface. The series-coupled transducer set includes a first transducer and a second transducer coupled in series, and disposed on the first surface of the piezoelectric substrate. The first transducer includes a first electrode and a common electrode. The second transducer includes a second electrode and the common electrode. The common electrode is floating, and the first transducer and the second transducer are coupled in series through the common electrode.
Claims20
An acoustic wave device, comprising:
- a piezoelectric substrate having a first surface;
- and
- a series-coupled transducer set comprising a first transducer and a second transducer coupled in series, and disposed on the first surface of the piezoelectric substrate, wherein:
- the first transducer comprises a first electrode and a common electrode;
- and
- the second transducer comprises a second electrode and the common electrode;
- wherein the common electrode is floating, and the first transducer and the second transducer are coupled in series through the common electrode.
A method of manufacturing an acoustic wave device, comprising:
- providing a piezoelectric substrate with a first surface;
- forming a conductive layer on the first surface;
- and
- patterning the conductive layer to form a patterned conductive layer, the patterned conductive layer comprising:
- a first transducer, comprising a first electrode and a common electrode;
- and
- a second transducer, comprising a second electrode and the common electrode;
- wherein the common electrode is floating, and the first transducer and the second transducer are coupled in series through the common electrode.
Dependencies are inferred from the claim text.