Longitudinal quartz crystal resonator
US5059853A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jul 13, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0595
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A longitudinal quartz crystal resonator which creates an extremely small amount of vibrational leakage. Quartz is a highly stable material physically and chemically. A so-called quartz crystal resonator formed of quartz therefore has a low series resistance and a high Q-value. Such excellent characteristics are, however, obtained on the condition that the quartz crystal resonator is designed so as to produce a less leakage of vibration. Energy of a vibrational portion is trapped within itself by contriving and improving a configuration of a supporting portion of the longitudinal quartz crystal resonator which is incorporated with the vibrational portion and the supporting portion by an etching method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.