Acoustic wave element, duplexer, and communication module
US9806692B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2015 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jan 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/725
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acoustic wave element of the present disclosures has a piezoelectric substrate and an acoustic wave resonator S1 on a main surface of the piezoelectric substrate. The acoustic wave resonator S1 is one being divided into a first IDT electrode and a second IDT electrode which are electrically connected to the first IDT electrode. The first IDT electrode includes a first comb-shaped electrode on the signal input side and a second comb-shaped electrode on the signal output side. The second IDT electrode includes a third comb-shaped electrode on the signal input side and a fourth comb-shaped electrode on the signal output side. The direction of arrangement of the third comb-shaped electrode and the fourth comb-shaped electrode from the third comb-shaped electrode toward the fourth comb-shaped electrode is different from the direction of arrangement from the first comb-shaped electrode toward the second comb-shaped electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.