Patents by Inventor John R. Rowland, Jr.

John R. Rowland, 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).

  • Front end filter circuitry for a dual band GSM/DCS cellular phone
    Patent number: 6125271
    Abstract: A front end circuit for an RF dual band GSM/DCS phone includes a first channel including an elliptical high-pass filter, a first SAW filter, and a low noise amplifier and a second channel including a second SAW filter and a second low noise amplifier. The output of each channel is alternately switchable to a single-side band mixer circuit. This front end circuit arrangement provides significantly reduced cost and part count over other approaches.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: September 26, 2000
    Assignee: Conexant Systems, Inc.
    Inventor: John R. Rowland, Jr.