Patents by Inventor Neric H. W. Fong

Neric H. W. Fong 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).

  • Tunable upconverter mixer with image rejection
    Patent number: 6959178
    Abstract: Tunable upconversion mixers that have a controllable passband response and provide substantial image rejection, making costly post-mixing filtering at least optional, if not unnecessary for many applications. A single mixer is able to support several frequency bands (and/or be accurately tuned within one frequency band) by means of varying the capacitance in a tunable load circuit for the mixer circuit. The tunable mixer comprises a mixer circuit having inputs for receiving a signal to be upconverted and an oscillator signal to be mixed with the signal to be upconverted. The mixer generates a mixer output signal at a desired sideband frequency and an image signal at an image frequency.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: October 25, 2005
    Assignee: IPR Licensing Inc.
    Inventors: José A. Macedo, Neric H. W. Fong, David G. Rahn
  • A Tunable Upconverter Mixer With Image Rejection
    Publication number: 20030199259
    Abstract: Tunable upconversion mixers that have a controllable passband response and provide substantial image rejection, making costly post-mixing filtering at least optional, if not unnecessary for many applications. A single mixer is able to support several frequency bands (and/or be accurately tuned within one frequency band) by means of varying the capacitance in a tunable load circuit for the mixer circuit. The tunable mixer comprises a mixer circuit having inputs for receiving a signal to be upconverted and an oscillator signal to be mixed with the signal to be upconverted. The mixer generates a mixer output signal at a desired sideband frequency and an image signal at an image frequency.
    Type: Application
    Filed: January 20, 2003
    Publication date: October 23, 2003
    Applicant: COGNIO, INC.
    Inventors: Jose A. Macedo, Neric H. W. Fong, David G. Rahn