Temperature Stabilization Or Compensation Patents (Class 333/155)
  • High efficiency wide band surface acoustic wave coupler processors
    Patent number: 4191934
    Abstract: A surface wave signal processor employs acoustic means for processing electrical input signals for yielding modified delayed output signals. The piezoelectric coupling devices of the invention propagate energy in a first acoustic wave at a surface of a first medium and electrically transfer it to a second acoustic wave propagating at a surface of a second medium in such a manner that temperature variation of the delay is minimized.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: March 4, 1980
    Assignee: Sperry Corporation
    Inventor: Leland P. Solie
  • Temperature compensated reflective array for surface acoustic wave processing
    Patent number: 4166228
    Abstract: An apparatus for processing surface acoustic waves includes input and output transducers mounted on a piezoelectric substrate so as to launch and receive acoustic waves, respectively. Two pairs of reflective arrays are positioned in the propagation path between the input and output transducers so as to provide an S-shaped propagation path in which the directions of propagation of the waves launched by the input transducer and received by the output transducer are essentially parallel.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: August 28, 1979
    Assignee: Sperry Rand Corporation
    Inventor: Leland P. Solie