Patents by Inventor Ming-Hao Yeh

Ming-Hao Yeh 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).

  • Antenna array of printed circuit board
    Patent number: 7138948
    Abstract: The present invention discloses an antenna array installed on a printed circuit board, which comprises two antenna units, each being a microstrip directly installed on two symmetric ends of a T-shape microstrip on a printed circuit board and an asymmetric end of the T-shape microstrip circuit being a feeding end feeding signals simultaneously to the two antenna units. A grounding metal surface is fabricated on the other side of the printed circuit board at a position other than the antenna unit, and keeps a specific distance from at least one corresponding edge of the antenna unit. Since the antenna units are symmetric in shape and have the same feeding end, the radiation direction thereof is shifted towards the two symmetric edges to broaden the range of the use of two symmetric edges.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: November 21, 2006
    Assignee: Alpha Networks Inc.
    Inventor: Ming-Hao Yeh
  • Antenna array of printed circuit board
    Publication number: 20060109175
    Abstract: The present invention discloses an antenna array installed on a printed circuit board, which comprises two antenna units, each being a microstrip directly installed on two symmetric ends of a T-shape microstrip on a printed circuit board and an asymmetric end of the T-shape microstrip circuit being a feeding end feeding signals simultaneously to the two antenna units. A grounding metal surface is fabricated on the other side of the printed circuit board at a position other than the antenna unit, and keeps a specific distance from at least one corresponding edge of the antenna unit. Since the antenna units are symmetric in shape and have the same feeding end, the radiation direction thereof is shifted towards the two symmetric edges to broaden the range of the use of two symmetric edges.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 25, 2006
    Applicant: Alpha Networks Inc.
    Inventor: Ming-Hao Yeh