Patents by Inventor Edward Lee Smith, Jr.

Edward Lee Smith, Jr. 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).

  • Apparatus and methods for tuning antenna impedance using transmitter and receiver parameters
    Patent number: 6993297
    Abstract: According to some embodiments of the present invention, an impedance transformation circuit is provided for use with a transmitter, a receiver, and an antenna. The transmitter may provide transmission signals for transmission by the antenna. The antenna may provide received signals having an associated signal parameter to the receiver. The impedance transformation circuit includes an impedance adjusting circuit and a controller. The impedance adjusting circuit is connected between the antenna, the receiver, and the transmitter. The impedance adjusting circuit is configured to change an impedance difference presented between at least one of: 1) the transmitter and the antenna, and 2) the antenna and the receiver, in response to a control signal. The controller generates the control signal to change the presented impedance difference in response to a signal parameter.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: January 31, 2006
    Assignee: Sony Ericsson Mobile Communications AB
    Inventor: Edward Lee Smith, Jr.