Patents by Inventor Bert W. A. Wall

Bert W. A. Wall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Compensation of resonators for substrate and transducer asymmetry
    Patent number: 7569971
    Abstract: An in-line SAW resonator employs an asymmetric adjustment of the Bragg frequencies of the left outer reflector and right outer reflector where the degree of periodicity shift and the relative direction of the frequency shift are calculated to move the peaks of the acoustic standing wave trapped between the gratings to coincide with the optimized centers of transduction of one or more interdigital transducers (IDTs) without the need for undesirable breaks in the periodicity or the use of reflectionless IDTs.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 4, 2009
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Jeffrey C Andle, Bert W. A. Wall
  • COMPENSATION OF RESONATORS FOR SUBSTRATE AND TRANSDUCER ASSYMETRY
    Publication number: 20090085430
    Abstract: An in-line SAW resonator employs an asymmetric adjustment of the Bragg frequencies of the left outer reflector and right outer reflector where the degree of periodicity shift and the relative direction of the frequency shift are calculated to move the peaks of the acoustic standing wave trapped between the gratings to coincide with the optimized centers of transduction of one or more interdigital transducers (IDTs) without the need for undesirable breaks in the periodicity or the use of reflectionless IDTs.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 2, 2009
    Applicant: DELAWARE CAPITAL FORMATION, INC.
    Inventors: Jeffrey C. Andle, Bert W. A. Wall