Patents by Inventor Derek Nolan

Derek Nolan 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).

  • Phase shifters using switch-based feed line splitters
    Patent number: 11489255
    Abstract: A phase shifter that includes an RF splitter is disclosed. The RF splitter is arranged so that an RF input signal is provided to, and split over portions of, a feed line that connects an antenna element with a radio transmitter/receiver/transceiver, thus realizing a feed line splitter. Feed line splitters described herein are provided with switches that allow changing a point at which the RF input signal is fed to the feed line, where the switches may be semiconductor-based or MEMS-based switches. The point at which the RF input signal is provided to the feed line to be split defines the electrical path length that the RF energy will travel down each respective path of the feed line splitter, which, in turn, changes the phase shift realized at each output of the feed line splitter. Different antenna elements may be coupled to different outputs of the feed line splitter.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 1, 2022
    Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
    Inventors: Padraig Fitzgerald, Yong Zhang, Padraig McDaid, Dragoslav Culum, Philip Brennan, Derek Nolan
  • Phase shifters using switch-based feed line splitters
    Patent number: 11404781
    Abstract: A phase shifter that includes an RF splitter is disclosed. The RF splitter is arranged so that an RF input signal is provided to, and split over portions of, a feed line that connects an antenna element with a radio transmitter/receiver/transceiver, thus realizing a feed line splitter. Feed line splitters described herein are provided with switches that allow changing a point at which the RF input signal is fed to the feed line, where the switches may be semiconductor-based or MEMS-based switches. The point at which the RF input signal is provided to the feed line to be split defines the electrical path length that the RF energy will travel down each respective path of the feed line splitter, which, in turn, changes the phase shift realized at each output of the feed line splitter. Different antenna elements may be coupled to different outputs of the feed line splitter.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: August 2, 2022
    Inventors: Padraig Fitzgerald, Yong Zhang, Padraig McDaid, Dragoslav Culum, Philip Brennan, Derek Nolan
  • PHASE SHIFTERS USING SWITCH-BASED FEED LINE SPLITTERS
    Publication number: 20210367339
    Abstract: A phase shifter that includes an RF splitter is disclosed. The RF splitter is arranged so that an RF input signal is provided to, and split over portions of, a feed line that connects an antenna element with a radio transmitter/receiver/transceiver, thus realizing a feed line splitter. Feed line splitters described herein are provided with switches that allow changing a point at which the RF input signal is fed to the feed line, where the switches may be semiconductor-based or MEMS-based switches. The point at which the RF input signal is provided to the feed line to be split defines the electrical path length that the RF energy will travel down each respective path of the feed line splitter, which, in turn, changes the phase shift realized at each output of the feed line splitter. Different antenna elements may be coupled to different outputs of the feed line splitter.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: Analog Devices International Unlimited Company
    Inventors: Padraig FITZGERALD, Yong ZHANG, Padraig McDAID, Dragoslav CULUM, Philip BRENNAN, Derek Nolan