Accession Number:

ADD012561

Title:

Temperature Compensated Berlinite for Surface Acoustic Wave Devices.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

Report Date:

1986-09-02

Pagination or Media Count:

7.0

Abstract:

The 19.1 propagation X-cut of berlinite AIPO4 has been discovered to have cubic temperature compensation for surface acoustic waves SAW. The temperature variations of frequency or time delay over 35 deg c to 85 deg c. temperature range are comparable to ST-quartz. However, berlinite has at least twice the piezoelectric coupling. This 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
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE