High frequency piezoelectric resonator
US5196758A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Mar 8, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/19
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piezoelectric resonator containing two rectangular parallelepipedal slices including N and M base structures, respectively, wherein N and M are integers. The two rectangular parallelepipedal slices each include at least one base structure shaped as a thin crystal slice of piezoelectric material in the form of a rectangular parallelepiped. A non-resonant arm connects the two rectangular parallelepipedal slices in juxtaposition in a single plane. An embedding zone is connected to the arm through a connection zone so as to fix the resonator outside a center thereof. Electrodes are disposed on opposite surfaces of the two rectangular parallelepipedal slices and are polarized to excite preferentially the Nth harmonic of a fundamental contour vibration mode in each base structure, and to produce respective extension modes in the two rectangular parallelepipedal slices in a direction perpendicular to an axis of the non-resonant arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.