Acoustic wave element, multi plexer, and communication module
US10622969B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2015 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Jan 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/87
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The acoustic wave element of the present invention includes a multi-mode type filter and a capacitance part. The multi-mode type filter includes a substrate comprised of a piezoelectric crystal; a first IDT to which a signal is input and a second IDT which is adjacent to this, each IDT including a first comb-shaped electrode and a second comb-shaped electrode which is connected to a reference potential, each comb-shaped electrode being located on the upper surface of the substrate and including a plurality of electrode fingers. The capacitance part is located on the upper surface of the substrate and includes a first counter electrode which is electrically connected to the first IDT at the first comb-shaped electrode side, and a second counter electrode which is arranged at a distance from the first counter electrode and is connected to the reference potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.