Patents by Inventor Hwai-Kee Tsiang

Hwai-Kee Tsiang 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).

  • Adjacent antenna interference mitigation
    Patent number: 11011836
    Abstract: A system for mitigating radio frequency interference includes a multiple patch antenna array including a multiplicity of patch antenna elements. The multiple patch antenna array is positioned relative to an interfering antenna such that signals from the interfering antenna cause interference with the multiple patch antenna array. The system also includes an auxiliary antenna positioned relative to the multiple patch antenna array. The system additionally includes a device to generate a spatial null in a direction to the interfering antenna from the multiple patch antenna array in response to a first signal from the auxiliary antenna and a second signal from the multiple patch antenna array. The first signal and the second signal are generated in response to a transmitted signal being received by the auxiliary antenna and the multiple patch antenna array. The spatial null permits simultaneous operation of the multiple patch antenna array and the interfering antenna.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 18, 2021
    Assignee: The Boeing Company
    Inventors: Jeffrey D. Postetter, William Preston Geren, Hwai-Kee Tsiang, Timothy Allen Murphy
  • ADJACENT ANTENNA INTERFERENCE MITIGATION
    Publication number: 20180175496
    Abstract: A system for mitigating radio frequency interference includes a multiple patch antenna array including a multiplicity of patch antenna elements. The multiple patch antenna array is positioned relative to an interfering antenna such that signals from the interfering antenna cause interference with the multiple patch antenna array. The system also includes an auxiliary antenna positioned relative to the multiple patch antenna array. The system additionally includes a device to generate a spatial null in a direction to the interfering antenna from the multiple patch antenna array in response to a first signal from the auxiliary antenna and a second signal from the multiple patch antenna array. The first signal and the second signal are generated in response to a transmitted signal being received by the auxiliary antenna and the multiple patch antenna array. The spatial null permits simultaneous operation of the multiple patch antenna array and the interfering antenna.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 21, 2018
    Inventors: Jeffrey D. Postetter, William Preston Geren, Hwai-Kee Tsiang, Timothy Allen Murphy
  • Rectangular aperture reflector for radar cross section and antenna pattern compact ranges
    Patent number: 5270726
    Abstract: A compact range system includes a feed antenna offset from the rectangular-aperture paraboloidal reflector. The reflector has blended edges and smoothed corners to reduce contamination of propagated electromagnetic plane waves by diffracted energy. The continuous, smooth surface of the reflector maximizes the purity and uniformity of the plane waves from the reflector.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: December 14, 1993
    Assignee: The Boeing Company
    Inventors: James C. Axtell, Vernon B. Westburg, Hwai-Kee Tsiang