Patents by Inventor Seth Sin

Seth Sin 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).

  • 670 GHz Schottky diode based subharmonic mixer with CPW circuits and 70 GHz IF
    Patent number: 8693973
    Abstract: A coplanar waveguide (CPW) based subharmonic mixer working at 670 GHz using GaAs Schottky diodes. One example of the mixer has a LO input, an RF input and an IF output. Another possible mixer has a LO input, and IF input and an RF output. Each input or output is connected to a coplanar waveguide with a matching network. A pair of antiparallel diodes provides a signal at twice the LO frequency, which is then mixed with a second signal to provide signals having sum and difference frequencies. The output signal of interest is received after passing through a bandpass filter tuned to the frequency range of interest.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: April 8, 2014
    Assignee: California Institute of Technology
    Inventors: Goutam Chattopadhyay, Erich T. Schlecht, Choonsup Lee, Robert H. Lin, John J. Gill, Seth Sin, Imran Mehdi
  • 670 GHZ SCHOTTKY DIODE BASED SUBHARMONIC MIXER WITH CPW CIRCUITS AND 70 GHZ IF
    Publication number: 20120280742
    Abstract: A coplanar waveguide (CPW) based subharmonic mixer working at 670 GHz using GaAs Schottky diodes. One example of the mixer has a LO input, an RF input and an IF output. Another possible mixer has a LO input, and IF input and an RF output. Each input or output is connected to a coplanar waveguide with a matching network. A pair of antiparallel diodes provides a signal at twice the LO frequency, which is then mixed with a second signal to provide signals having sum and difference frequencies. The output signal of interest is received after passing through a bandpass filter tuned to the frequency range of interest.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Applicant: California Institute of Technology
    Inventors: Goutam Chattopadhyay, Erich T. Schlecht, Choonsup Lee, Robert H. Lin, John J. Gill, Seth Sin, Imran Mehdi