Patents by Inventor Larry Charles Witkowski

Larry Charles Witkowski 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).

  • BAW structure having multiple BAW transducers over a common reflector, which has reflector layers of varying thicknesses
    Patent number: 10601398
    Abstract: A BAW device includes a substrate, a first reflector, and at least two BAW transducers. The first reflector resides over the substrate and has a plurality of reflector layers. A first BAW transducer resides over a first section of the first reflector, has a first series resonance frequency, and has a first piezoelectric layer of a first thickness between a first top electrode and a first bottom electrode. The second BAW transducer resides over a second section of the first reflector, has a second series resonance frequency that is different than the first series resonance frequency, and has a second piezoelectric layer of a second thickness, which is different than the first thickness, between a second top electrode and a second bottom electrode.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: March 24, 2020
    Assignee: Qorvo US, Inc.
    Inventors: Dana Jay Sturzebecher, Larry Charles Witkowski, Arthur Donald Ballato, Andrew Arthur Ketterson
  • BAW STRUCTURE HAVING MULTIPLE BAW TRANSDUCERS OVER A COMMON REFLECTOR, WHICH HAS REFLECTOR LAYERS OF VARYING THICKNESSES
    Publication number: 20190319602
    Abstract: A BAW device includes a substrate, a first reflector, and at least two BAW transducers. The first reflector resides over the substrate and has a plurality of reflector layers. A first BAW transducer resides over a first section of the first reflector, has a first series resonance frequency, and has a first piezoelectric layer of a first thickness between a first top electrode and a first bottom electrode. The second BAW transducer resides over a second section of the first reflector, has a second series resonance frequency that is different than the first series resonance frequency, and has a second piezoelectric layer of a second thickness, which is different than the first thickness, between a second top electrode and a second bottom electrode.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 17, 2019
    Inventors: Dana Jay Sturzebecher, Larry Charles Witkowski, Arthur Donald Ballato, Andrew Arthur Ketterson