Piezoelectric resonator with reduced deformation sensitivity
US7067964B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2004 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/1035
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Reliable piezoelectric restraint mechanisms are provided that substantially reduce the ill effects of acceleration sensitivity through an increasingly rigid and precise orientation system. The piezoelectric resonator stress relief apparatus, devices and systems of the present invention resolve the long-standing disadvantages, limitations and shortcomings of acceleration sensitive resonators by stacking a number of rigid plates, layers and spring cushions around the piezoelectric resonator by means of a mounting structure that provides in-plane stress relief and precise definition of the mounting plane. The piezoelectric resonator stress relief apparatus, device and system can essentially eliminate any deformation or may include precisely defined features to tailor the allowed deformation of the piezoelectric resonator, without suffering from the long-standing disadvantages, limitations and shortcomings of prior art acceleration sensitive resonators. The piezoelectric resonator may be a bulk acoustic wave resonator (BAW) comprising a plano-plano, plano-convex or bi-convex thickness profile, or a surface acoustic wave resonator (SAW) comprising a plano-plano thickness profile. Spring…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.