Resonator having a bar designed to vibrate in one extension mode
US5153478A · kind A · utility
1Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | May 6, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0595
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A resonator has a parallelepipedal bar of a piezoelectric material designed to vibrate in an extension mode, and suspension means of said bar which form a single, integral part with the latter and which are only connected to one of its lateral faces. This arrangement makes it possible to reduce the number of parasitic vibration modes which could couple to the main mode as well as coupling between these modes, and hence variations as a function of the temperature in the characteristics of the resonator, notably in its quality factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.