Patents by Inventor Dongjaing Qiao

Dongjaing Qiao 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).

  • Radio front end with resonant transmit/receive switch
    Patent number: 7920833
    Abstract: A device having a radio front end is provided. The radio front end includes an inductor having a first end and a second end. A capacitor having a first end and a second end is connected to the second end of the inductor. An antenna is connected to the second end of the inductor and the second end of the capacitor. A first switch is connected to the first end of the inductor and the first end of the capacitor, wherein the inductor and capacitor form a resonant circuit when the first switch is closed. A second switch is connected to the resonant circuit, the second switch connecting the resonant circuit to ground through a low impedance when the first switch is closed. A third switch is connected to a transmit power amplifier connecting the transmit power amplifier to ground through a low impedance when the first switch is closed.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: April 5, 2011
    Assignee: Axiom Microdevices, Inc.
    Inventors: Dongjaing Qiao, Scott Kee, Ichiro Aoki, Donald McClymont
  • Radio front end with resonant transmit/receive switch
    Publication number: 20090017775
    Abstract: A device having a radio front end is provided. The radio front end includes an inductor having a first end and a second end. A capacitor having a first end and a second end is connected to the second end of the inductor. An antenna is connected to the second end of the inductor and the second end of the capacitor. A first switch is connected to the first end of the inductor and the first end of the capacitor, wherein the inductor and capacitor form a resonant circuit when the first switch is closed. A second switch is connected to the resonant circuit, the second switch connecting the resonant circuit to ground through a low impedance when the first switch is closed. A third switch is connected to a transmit power amplifier connecting the transmit power amplifier to ground through a low impedance when the first switch is closed.
    Type: Application
    Filed: July 11, 2007
    Publication date: January 15, 2009
    Inventors: Dongjaing Qiao, Scott D. Kee, Ichiro Aoki, Donald McClymont