Patents by Inventor Jiaqu Qiu

Jiaqu Qiu 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).

  • Patent number: 10270145
    Abstract: A technique is presented to extract electromagnetic radiation from a dielectric loaded waveguide consisting of a layer or layers of dielectric material enclosed in a metallic conducting jacket. The electromagnetic radiation generated in the dielectric waveguide by a charged particle beam or otherwise generated as input to the waveguide. Dielectric loaded waveguides used for generation (or transport) of electromagnetic radiation at frequencies above 100 GHz have dimensions in the sub-mm range. Due to difficulty in the fabrication of a conventional broadband horn-like antenna to extract electromagnetic radiation from the structure because of the large impedance mismatch between the dielectric loaded waveguide and free space, the designing and fabricating aperture of antennas are formed as part of the dielectric waveguide and utilizes an angle cut or a set of apertures machined into the dielectric loaded waveguide to ensure broadband power extraction with minimal return loss and high directivity.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: April 23, 2019
    Assignee: EUCLID TECH LABS, LLC
    Inventors: Sergey Antipov, Chunuang Jing, Roman Kostin, Jiaqu Qiu, Dan Wang, Alexei Kanareykin, Stanislauv Baturin, Sergey Baryshev
  • Patent number: 9870891
    Abstract: The present invention provides a technique for constructing compact, high gradient magnetic lenses for charged particle beam focusing. Methods for adjusting the focusing strength of the lenses are provided, based on thermal control, mechanical motion of the magnetic chips within the yoke. The present invention is a method for designing and fabricating permanent magnet focusing elements that are compact, simple to construct, and having a large, adjustable focusing strength. Applications include beamlines for THz radiation sources, free electron lasers, wakefield accelerators and any other charged particle devices that require a compact beamline.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: January 16, 2018
    Assignee: EUCLID TECHLABS LLC
    Inventors: Sergey Antipov, Yingje Li, Chunuang Jing, Roman Kostin, Jiaqu Qiu, Dan Wang, Paul Schoessow