Accession Number:

ADD009962

Title:

Method of Frequency Trimming Surface Acoustic Wave Devices.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s):

Report Date:

1982-12-30

Pagination or Media Count:

30.0

Abstract:

The invention relates generally to the field of analog signal processing and frequency control and more particularly to surface acoustic wave devices and the resonant frequencies thereof. In the field of surface acoustic wave SAW devices, there is a need for precision frequency in high Q mechanical response, narrowband SAW devices. It is well-known in the art that resonant devices of both bulk and surface acoustic wave varieties often age downward in frequency. It is highly desirable, therefore, to have a method of frequency adjustment that is capable of either positive or negative frequency adjustment. This may be done by the method of the instant invention. It is the object of this invention to provide a means for precisely trimming the resonance frequency of a surface acoustic wave device thereby changing the resonance frequency by a small fraction of the bandwidth. Author

Subject Categories:

  • Line, Surface and Bulk Acoustic Wave Devices
  • Plastics
  • Electromagnetic Pulses

Distribution Statement:

APPROVED FOR PUBLIC RELEASE