Patents by Inventor Jacob W. Kooi

Jacob W. Kooi 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).

  • WAVEGUIDE BASED SUBMILLIMMETER-WAVE AND TERAHERTZ VARIABLE ATTENUATOR
    Publication number: 20220407200
    Abstract: A waveguide based variable attenuator device including one or more attenuators each including a porous dielectric material; and a metal coating on the top of the dielectric material; and an actuator coupled to the attenuator. The actuator is configured to position, with nanometer resolution, the one or more attenuators in a waveguide configured and dimensioned to guide an electromagnetic wave having a frequency in a range of 100 gigahertz (GHz) to 1 terahertz (THz). The actuator controls at least one of a position or a volume of the one attenuator inserted in the waveguide to achieve a variable or pre-determined attenuation of the electromagnetic wave transmitted through waveguide.
    Type: Application
    Filed: June 22, 2022
    Publication date: December 22, 2022
    Applicant: California Institute of Technology
    Inventors: Goutam Chattopadhyay, Jacob W. Kooi, Choonsup Lee, Sofia Rahiminejad, Subash Khanal