Patents by Inventor Ed F. Lawrence

Ed F. Lawrence 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).

  • Intermediate frequency amplifier circuit for use in receive and transmit modes
    Patent number: 6510309
    Abstract: An intermediate frequency amplifier for wireless communication applications has the same receive path and transmit path through an off-chip filter. The intermediate frequency amplifier circuit includes a first amplifier and a second amplifier. The second amplifier includes a gain control circuitry. The second amplifier provides gain control for both the receive mode and for the transmit mode of operation. The IF amplifier can be used in a variety of communication applications, including cordless telephones, cellular phones, PHS phones, wireless modems, radios, and other devices.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: January 21, 2003
    Assignee: Conexant Systems, Inc.
    Inventors: Philip H. Thompson, Paul R. Andrys, Ed F. Lawrence