Patents by Inventor Alvin Kong

Alvin Kong 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).

  • Multi-channel surface acoustic wave filter device with voltage controlled tunable frequency response
    Patent number: 7821360
    Abstract: A multi-channel surface acoustic wave (SAW) filter includes a voltage controlled velocity tunable piezoelectric substrate, an input transducer fabricated on the substrate, and an output transducer fabricated on the substrate. The input transducer further includes multiple input sub-transducers that are electrically and physically connected in parallel. The output transducer further includes multiple output sub-transducers that are electrically and physically connected in parallel. Corresponding pairs of input sub-transducers and output sub-transducers form multiple parallel channels for SAW propagation. The input transducer produces a voltage controlled tunable COMB frequency response that is combined with a voltage controlled tunable COMB frequency response produced by the output transducer to produce a SAW filter voltage controlled tunable frequency response.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: October 26, 2010
    Assignee: Northrop Grumman Systems Corporation
    Inventors: David Yip, Alvin Kong, Thomas Jung
  • MULTI-CHANNEL SURFACE ACOUSTIC WAVE FILTER DEVICE WITH VOLTAGE CONTROLLED TUNABLE FREQUENCY RESPONSE
    Publication number: 20100052818
    Abstract: A multi-channel surface acoustic wave (SAW) filter includes a voltage controlled velocity tunable piezoelectric substrate, an input transducer fabricated on the substrate, and an output transducer fabricated on the substrate. The input transducer further includes multiple input sub-transducers that are electrically and physically connected in parallel. The output transducer further includes multiple output sub-transducers that are electrically and physically connected in parallel. Corresponding pairs of input sub-transducers and output sub-transducers form multiple parallel channels for SAW propagation. The input transducer produces a voltage controlled tunable COMB frequency response that is combined with a voltage controlled tunable COMB frequency response produced by the output transducer to produce a SAW filter voltage controlled tunable frequency response.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 4, 2010
    Applicant: NORTHROP GRUMMAN SPACE AND MISSION SYSTEMS CORP.
    Inventors: David Yip, Alvin Kong, Thomas Jung