SAW DEVICE AND METHOD OF MANUFACTURE
Assignee
RAYTHEON COMPANY, LEXINGTON, MA 02173, A CORP. OF DE.
Filed
Jun 29, 1988
Granted
Sep 6, 1994
Location
ANDOVER MA US
Abstract
A SAW device such as a resonator includes a surface supporting surface wave propagation and a pair of aluminum transducer elements each coupled to said surface wave propagation surface. Each aluminum transducer element is doped with a predetermined amount of silicon. Frequency shifts which result from exposing the SAW device to high temperature cycles as often encountered when packaging the device are reduced, since the silicon present as a dopant in the aluminum will provide an effect on frequency which can be taken into consideration during design and fabrication. These frequency effects will dominate any frequency effects which may result from silicon migration from the substrate to the transducers as a result of the thermal cycling encountered during sealing of the SAW device.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jul 27, 1990
Rescinded
Dec 14, 1993
Duration
3 years, 4 months
Inventor
- 1JAMES A. GREER
Record Details
- Patent number
- US 5345134
- Application
- 07221495
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records