Patents by Inventor Jen-How Lee

Jen-How Lee 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).

  • Down-conversion frequency mixer circuit
    Patent number: 8803586
    Abstract: A frequency mixer circuit includes a gain stage and a mixer. The gain stage has a specific circuit design to convert a differential input voltage signal into a differential current signal with an input frequency. The mixer receives a differential local oscillator (LO) voltage signal with a LO frequency, and the differential current signal from the gain stage, and outputs a differential output voltage signal having a mixed frequency associated with the input frequency and the LO frequency.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: August 12, 2014
    Assignee: National Chi Nan University
    Inventors: Jen-How Lee, Yo-Sheng Lin, Wei-Chen Wen