Patents by Inventor Christopher D. Howson

Christopher D. Howson 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).

  • Voltage controlled oscillator
    Patent number: 5153533
    Abstract: A voltage-controlled oscillator using planar microstrip technology and primarily for the 37 to 39.5 GHz frequency band comprises a strip-line resonator, a negative resistance device mounted adjacent the center of the resonator, respective variable capacitance devices mounted adjacent the ends of the resonator, a high impedance coupling the resonator to an output path, and bias signals are applied to the negative resistance device and said variable capacitance devices.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: October 6, 1992
    Assignee: GPT Ltd.
    Inventors: Kevin Lamacraft, Kenneth Elder, Christopher D. Howson