Patents by Inventor Christopher John Daniel

Christopher John Daniel 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 method for shaping and power controlling a signal in a transmitter
    Patent number: 5697073
    Abstract: A transmitter architecture is disclosed which offers a new combination of signal shaping and power control which optimizes transmitter noise figure performance. The disclosed apparatus and method is implemented by separating the shaping element (303) from the power control elements (406, 412, 418) in frequency. Placing the shaping element (303) at a fixed intermediate frequency (IF) allows for the use of readily available, temperature stable shaping elements while distributing the power control elements (406, 412, 418) at radio frequency (RF) facilitates optimization of noise figure performance in the transmitter (200).
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: December 9, 1997
    Assignee: Motorola, Inc.
    Inventors: Christopher John Daniel, Kevin Joseph Holoubek
  • Method and apparatus for controlling a fractional-N synthesizer in a time division multiple access system
    Patent number: 5684795
    Abstract: In a Time Division Multiple Access System, multiple offset values are provided to a divider control circuit (213) of a fractional-N synthesizer (200) by utilizing a microprocessor (305). The microprocessor (305) utilizes timeslot information provided to it by a timeslot selector (301), frequency information provided to it by a frequency selector (303) and a read-only memory (307), to provide offset values to the divider control circuit (213).
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: November 4, 1997
    Assignee: Motorola, Inc.
    Inventors: Christopher John Daniel, Thomas J. Kovarik, Robert Scott Swenson