Patents by Inventor Robert Morawski

Robert Morawski 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).

  • Methods and apparatus of adjusting delays of signals
    Patent number: 10530323
    Abstract: In some examples, a delay apparatus includes a controllable delay line comprising a plurality of delay elements selectively connected in a signal path to vary a delay of a signal passing through the delay line, and a controllable phase shifter comprising reflective loads adjustable to vary a phase shift applied to the signal.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: January 7, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Fei Chen, Robert Morawski, Tho Le-Ngoc, James Gary Griffiths
  • HIGH-LINEARITY QUADRATURE HYBRID ATTENUATOR
    Publication number: 20190044501
    Abstract: Various arrangements of a PIN diode attenuator circuit are presented. The PIN diode attenuator circuit may include a quadrature hybrid coupler. The PIN diode attenuator circuit may include a direct current (DC) feed circuit comprising an adjustable DC voltage source. PIN diode attenuator circuit may include first and second PIN diode circuits connected with ports of the quadrature hybrid coupler. Each PIN diode circuit may include a PIN diode having a first cathode of the first PIN diode directly connected to a ground potential and a first anode of the first PIN diode connected with the DC feed circuit and the quadrature hybrid coupler.
    Type: Application
    Filed: August 1, 2017
    Publication date: February 7, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Hakhyun Lee, Robert Morawski, Tho Le-Ngoc, James Gary Griffiths
  • METHODS AND APPARATUS OF ADJUSTING DELAYS OF SIGNALS
    Publication number: 20180375487
    Abstract: In some examples, a delay apparatus includes a controllable delay line comprising a plurality of delay elements selectively connected in a signal path to vary a delay of a signal passing through the delay line, and a controllable phase shifter comprising reflective loads adjustable to vary a phase shift applied to the signal.
    Type: Application
    Filed: June 22, 2017
    Publication date: December 27, 2018
    Inventors: Fei Chen, Robert Morawski, Tho Le-Ngoc, James Gary Griffiths