Patents by Inventor Art Unwin

Art Unwin 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).

  • Publication number: 20080231540
    Abstract: A resonant radiating array comprising of a cluster of randomly arranged resonant elements for producing a radiation field
    Type: Application
    Filed: March 16, 2007
    Publication date: September 25, 2008
    Inventor: Art Unwin
  • Patent number: 5625367
    Abstract: A variable capacitance antenna allows individual adjustment of linear resonators on a beam antenna. A linear resonator is associated with each dipole element on a common support boom. A variable capacitance is positioned inside the boom and created using an arrangement of two coaxial conductive tubes as capacitive plates. One of the conductive tubes may be axially moved by a motor using a remote drive control. The movement of one conductive tube relative to the other can vary the capacitance from 0 to 100 picofarads, for example. The variable capacitance antenna can be used for both horizontal and vertical signal polarization applications. Such a variable capacitance antenna can receive and transmit electromagnetic signals on multiple frequency bands and in between frequency bands with high gain, high directivity, high efficiency, and low wind loading.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: April 29, 1997
    Inventor: Art Unwin