Patents by Inventor Christopher Tze-Chao Koh

Christopher Tze-Chao Koh 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).

  • Patent number: 11695192
    Abstract: An adapter for coupling a coaxial transmission line to a waveguide, wherein the center conductor of the coaxial line passes via a back short of the waveguide through an iris and that terminates to the inside wall of the waveguide.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: July 4, 2023
    Assignee: Millimeter Wave Systems, LLC
    Inventors: Martin Skowyra, William R. Shedd, Christopher Tze-Chao Koh
  • Publication number: 20220263483
    Abstract: A cryogenic parametric amplifier control apparatus is disclosed. Methods of implementation and devices incorporated within the whole of the apparatus are disclosed. Methods of reducing the number of signal lines necessary to control a parametric amplifier are disclosed. Schema allowing for control of multiple parametric amplifiers with a single apparatus are disclosed.
    Type: Application
    Filed: July 6, 2020
    Publication date: August 18, 2022
    Inventors: Christopher Tze-Chao Koh, Kenneth Ray Wood
  • Publication number: 20220037756
    Abstract: An adapter for coupling a coaxial transmission line to a waveguide, wherein the center conductor of the coaxial line passes via a back short of the waveguide through an iris and that terminates to the inside wall of the waveguide.
    Type: Application
    Filed: July 27, 2021
    Publication date: February 3, 2022
    Inventors: Martin Skowyra, William R. Shedd, Christopher Tze-Chao Koh
  • Patent number: 8134511
    Abstract: A phased array antenna device is described. The phased array antenna device includes at least one one-dimensional phased array of radiating elements arranged along an array direction, a lens, and a phase control element. The lens is arranged such that divergent beams from the radiating elements are collimated by the lens in a direction orthogonal to the array direction to produce a beam. The phase control element is configured to apply a linear phase gradient to the radiating elements thereby providing one-dimensional electronic beam steering for the antenna device. The antenna device may additionally include one or two mechanical positioners to mechanically move the at least one one-dimensional phased array in directions orthogonal to the array direction, where the phased array enables scanning along the array direction.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: March 13, 2012
    Assignee: Millitech Inc.
    Inventors: Christopher Tze-Chao Koh, Thomas Robert Newman, Kent Arthur Whitney
  • Publication number: 20080278394
    Abstract: A phased array antenna device is described. The phased array antenna device includes at least one one-dimensional phased array of radiating elements arranged along an array direction, a lens, and a phase control element. The lens is arranged such that divergent beams from the radiating elements are collimated by the lens in a direction orthogonal to the array direction to produce a beam. The phase control element is configured to apply a linear phase gradient to the radiating elements thereby providing one-dimensional electronic beam steering for the antenna device. The antenna device may additionally include one or two mechanical positioners to mechanically move the at least one one-dimensional phased array in directions orthogonal to the array direction, where the phased array enables scanning along the array direction.
    Type: Application
    Filed: April 29, 2008
    Publication date: November 13, 2008
    Inventors: Christopher Tze-Chao KOH, Thomas Robert NEWMAN, Kent Arthur WHITNEY