Patents by Inventor Ian F. Cox

Ian F. Cox 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).

  • R. F. mixer
    Patent number: 5438693
    Abstract: A mixer of the commutating type using FETs to switch between the primary of a transformer for an r.f. input and the secondary of a transformer 2 for an i.f. output. The mixer has high linearity and low power consumption of the local oscillator drive because the gate electrodes of the FETs are switched using pulse waveforms from driving transistors.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: August 1, 1995
    Assignee: GEC-Marconi Limited
    Inventor: Ian F. Cox