Accession Number:

ADD013228

Title:

Monolithic Combined Charge Transfer and Surface Acoustic Wave Device.

Descriptive Note:

Patent, Filed 29 Sep 82, patented 28 Aug 84,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1984-08-28

Pagination or Media Count:

5.0

Abstract:

This patent discloses novel technique for fabrication of a new class of surface acoustic wave SAW signal processing devices. Substrates of non-piezoelectric silicon or weakly piezoelectric gallium arsenide are prepared and a thin film of a piezoelectric material, such as zinc oxide, is deposited on the substrate. Interdigital transducers are fabricated at each end of the device to injectreceive SAW signals. A row of P-N diodes is constructed in the substrate underneath the SAW beam path and a metal electrode is deposited on top of the zinc oxide film. The diodes may be serially addressedcontrolled by a variety of devices external to the SAW beam path, but fabricated on the same substrate and the new device used to provide transformation between high-frequency signals and low-frequency signals having the same time-bandwidth product.

Subject Categories:

  • Line, Surface and Bulk Acoustic Wave Devices
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE