Guided wave devices with selectively loaded piezoelectric layers
US11588466B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2019 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Dec 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2009/155
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A micro-electrical-mechanical system (MEMS) guided wave device includes a plurality of electrodes arranged below a piezoelectric layer (e.g., either embedded in a slow wave propagation layer or supported by a suspended portion of the piezoelectric layer) and configured for transduction of a lateral acoustic wave in the piezoelectric layer. The piezoelectric layer permits one or more additions or modifications to be made thereto, such as trimming (thinning) of selective areas, addition of loading materials, sandwiching of piezoelectric layer regions between electrodes to yield capacitive elements or non-linear elastic convolvers, addition of sensing materials, and addition of functional layers providing mixed domain signal processing utility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.