Accession Number:

ADD010094

Title:

Temperature Compensated Berlinite for Surface Acoustic Wave Devices.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

Report Date:

1983-01-27

Pagination or Media Count:

17.0

Abstract:

The 19.1 propagation X-cut berlinite AlPO4 has been discovered to have cubic temperature compensation for surface acoustic waves SAW. The temperature variations of frequency or time delay over a 35 to 85 degrees C temperature range are comparable to ST-quartz. However, berlinite has at least twice the piezoelectric coupling. This is essential for low insertion loss, broadband SAW devices such as filters and correlators. In addition, 19.1 propagation, X-cut berlinite has lower volume wave spurious than ST-cut quartz. author

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE