Patents by Inventor Ai Xiangyang

Ai Xiangyang 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).

  • Phase shifter and antenna including phase shifter
    Patent number: 7907096
    Abstract: A phase shifter includes two or more conductive strips, an input line and a wiper coupled to both the input line and the conductive strips. Rotation of the wiper about a pivot point alters the path lengths between the input line and output ports or antenna elements connected to the conductive strips. The wiper is a multi-bladed wiper. Phase errors in multi-bladed wiper-type phase shifters are reduced. Arrangements for reduction of phase shifter size or increase in phase shift range are described.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: March 15, 2011
    Assignee: Andrew LLC
    Inventors: Igor E. Timofeev, Martin L. Zimmerman, Ai Xiangyang
  • Phase Shifter And Antenna Including Phase Shifter
    Publication number: 20090189826
    Abstract: A phase shifter includes two or more conductive strips, an input line and a wiper coupled to both the input line and the conductive strips. Rotation of the wiper about a pivot point alters the path lengths between the input line and output ports or antenna elements connected to the conductive strips. The wiper is a multi-bladed wiper. Phase errors in multi-bladed wiper-type phase shifters are reduced. Arrangements for reduction of phase shifter size or increase in phase shift range are described.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 30, 2009
    Inventors: Igor E. Timofeev, Martin L. Zimmerman, Ai Xiangyang