Patents by Inventor Mengistu TESSEMA

Mengistu TESSEMA 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).

  • Circuitry
    Patent number: 11424553
    Abstract: A circuitry for feeding an antenna structure includes an input for LHCP signals, an input for RHCP signals as well as four antenna outputs. In addition, the circuitry includes first, second and third quadrature hybrids as well as at least two delay lines. The first quadrature hybrid is coupled, on the input side, to the first and second inputs and is coupled, on the output side, to the second and third quadrature hybrids. The second quadrature hybrid is coupled, on the output side, to two of the four antenna outputs, the third quadrature hybrid being coupled, on the output side, to two further ones of the four antenna outputs. The at least two delay lines are arranged at two of the four antenna outputs.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: August 23, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschune e.V.
    Inventors: Alexander Popugaev, Mengistu Tessema, Rainer Wansch
  • Antenna device
    Patent number: 11223131
    Abstract: The invention relates to an antenna device having an emitter element for emitting and/or receiving electromagnetic signals. The emitter element includes at least one coupling point connected to a side of the emitter element, and implemented for capacitively coupling electromagnetic signals in and/or out.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: January 11, 2022
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Mario Schühler, Lars Weisgerber, Mengistu Tessema, Rainer Wansch, Michael Schlicht
  • CIRCUITRY
    Publication number: 20200366001
    Abstract: A circuitry for feeding an antenna structure includes an input for LHCP signals, an input for RHCP signals as well as four antenna outputs. In addition, the circuitry includes first, second and third quadrature hybrids as well as at least two delay lines. The first quadrature hybrid is coupled, on the input side, to the first and second inputs and is coupled, on the output side, to the second and third quadrature hybrids. The second quadrature hybrid is coupled, on the output side, to two of the four antenna outputs, the third quadrature hybrid being coupled, on the output side, to two further ones of the four antenna outputs. The at least two delay lines are arranged at two of the four antenna outputs.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 19, 2020
    Inventors: Alexander POPUGAEV, Mengistu TESSEMA, Rainer WANSCH
  • ANTENNA DEVICE
    Publication number: 20200350683
    Abstract: An antenna device includes at least a ground plane as well as a surface emitter. The surface emitter includes a foot element and a lid element, the foot element including a base area of at least four overturned areas via which the foot element is supported with regard to the ground plane, and the lid element being coupled to the base, so that it is spaced apart from the ground plane.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: Alexander POPUGAEV, Rainer WANSCH, Mengistu TESSEMA
  • ANTENNA DEVICE
    Publication number: 20190044238
    Abstract: The invention relates to an antenna device having an emitter element for emitting and/or receiving electromagnetic signals. The emitter element includes at least one coupling point connected to a side of the emitter element, and implemented for capacitively coupling electromagnetic signals in and/or out.
    Type: Application
    Filed: October 4, 2018
    Publication date: February 7, 2019
    Inventors: Mario SCHÜHLER, Lars WEISGERBER, Mengistu TESSEMA, Rainer WANSCH, Michael SCHLICHT