Accession Number : ADD010527

Title :   System for Recording Waveforms Using Spatial Dispersion.

Descriptive Note : Patent,


Personal Author(s) : Whitlock,Robert R

Report Date : 21 Jun 1983

Pagination or Media Count : 8

Abstract : This patent discloses a waveform recorder wherein surface acoustic waves excited in a piezoelectric-insulator-semiconductor layered structure produce a traveling electric field in the semiconductor substrate. Charges stored in the traveling potential wells and representing the instantaneous amplitude of a waveform to be recorded are transferred at high speed and density to different respective spatial locations. Because each successive well represents a different time instant of the waveform, the different spatial locations correspond to different times. The output signal from each of the locations can be selectively delayed before application to a display oscilloscope to enable display of the waveform at a rate many times slower that the actual frequency of the signal waveform.

Descriptors :   *Patents, *Waveforms, *Recording systems, Piezoelectric materials, Semiconductors, Layers, Surface acoustic waves, Electric fields, Charge transfer, Signal processing, Oscilloscopes

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE