Patents by Inventor Christopher John Ward

Christopher John Ward 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 frequency power measurement
    Patent number: 7049805
    Abstract: An unknown RF power is converted to a voltage by a detector (11). The voltage is converted to a number by a digitiser (12). A separate and fixed RF power reference (14) drives a second detector (15), whose voltage output is also converted to a number by the digitiser (12). The RF detectors are thermally coupled. Temperature variations in the RF power to voltage characteristic of the detector (11) are corrected by measuring the RF power reference (14) via the detector (15).
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: May 23, 2006
    Assignee: Racal Instruments Wireless Solutions Limited
    Inventors: Ian Michael Rose, Nigel Kenneth Webb, Christopher John Ward