Patents by Inventor Gregory S. Lee

Gregory S. Lee 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: 11867832
    Abstract: A miniature radar target simulator (MRTS) and a system comprising a plurality of MRTS's are described. The MRTS and system are useful for emulating echo signals for a radar DUT with reduced interference. Illustrative radar test systems desirably generate the intended (emulated) radar targets and reduce unwanted (“ghost”) signals, which can result in “ghost targets,” and errant/ambient electromagnetic radiation that reduces the performance and reliability of known re-illuminators and systems including same.
    Type: Grant
    Filed: February 15, 2021
    Date of Patent: January 9, 2024
    Assignee: KEYSIGHT TECHNOLOGIES, INC.
    Inventors: Gregory Douglas Vanwiggeren, Todd Steven Marshall, Gregory S. Lee, Natalie Killeen, Christian Bourde
  • Patent number: 11823223
    Abstract: A reward card platform includes a database storing funding accounts, reward card purchase transactions, reward card brand options, and denomination options. The platform provides a user interface for purchasing reward cards from multiple third party suppliers. The user interface commits reward card purchase transactions using the funding accounts and specified reward card brand and denomination options. The platform obtains reward card items from supplier APIs corresponding to specified reward card brand and denomination options. The platform includes a buffer storing reward card inventory items.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: November 21, 2023
    Assignee: Tango Card, Inc.
    Inventors: J J Zabkar, Israel E. Evans, James A. Johnston, Gregory S. Lee, Chek T. Lim
  • Patent number: 11791564
    Abstract: A system tests a device under test (DUT) that includes an antenna. The system includes a probe antenna, a network emulator, and a near-field antenna. The probe antenna measures beam characteristics of a beam-locked beam emitted over the air by the antenna of the DUT as the DUT is moved relative to the probe antenna during testing of the DUT. The network emulator emulates a base station of a communications network in communications with the DUT. The near-field antenna maintains a call link between the network emulator and the DUT using surface waves between the near-field antenna and the DUT as the DUT is moved relative to the probe antenna.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: October 17, 2023
    Assignee: KEYSIGHT TECHNOLOGIES, INC.
    Inventors: Gregory S. Lee, Dieter W. Vook
  • Patent number: 11686814
    Abstract: An apparatus is for generating an emulated radar reflection signal of a target. The apparatus includes a radar detector configured to detect a radar signal frame emitted by a device under test (DUT), an emulation transmitter configured to generate an emulated radar reflection signal of a target being emulated, and a processor configured to generate control signals which control the emulation transmitter according to at least one characteristic of the target being emulated. The processor is further configured to determine a current radar parameter among plural possible radar parameters of the radar signal frame of the DUT, and to adapt the control signals which control the emulation transmitter according to the determined current radar parameter of the radar signal frame of the DUT.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: June 27, 2023
    Assignee: KEYSIGHT TECHNOLOGIES, INC.
    Inventors: Dieter W. Vook, Todd Steven Marshall, Jefferson B. Burch, Gregory S. Lee
  • Patent number: 11686813
    Abstract: A system for testing vehicular radar is described. The system include a free-space polarization adapter (FSPA) configured to alter a first polarization state of electromagnetic waves from a radar device under test (DUT) to a second polarization state, which is different than the first polarization state; and a re-illuminator adapted to receive the electromagnetic waves having the second polarization state from the FSPA.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: June 27, 2023
    Assignee: KEYSIGHT TECHNOLOGIES, INC.
    Inventor: Gregory S. Lee
  • Patent number: 11618824
    Abstract: The present disclosure relates to compositions comprising uintaite in a concentrated liquid form, and methods for producing the concentrated liquid uintaite. The composition can include uintaite in vegetable oils, paraffinic oils, naphthenic oils, and combinations thereof. The composition may include 50-90% by mass of a first component and 10-50% by mass of a second component, wherein the first component comprises uintaite, and wherein the second component comprises one or more oils.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: April 4, 2023
    Assignee: AMERICAN GILSONITE COMPANY
    Inventors: Bart Lungren, Joseph Lorenc, Brian Majeska, Joseph Drbohlav, III, Donald R. Sjogren, Gregory S Lee
  • Patent number: 11555887
    Abstract: A method and system are provided for generating a trigger signal from a radar signal received over the air from a radar under test. The method includes detecting power of the radar signal received from the radar under test at a radio frequency (RF) power detector, the radar signal including multiple bursts of RF energy in a burst pattern; identifying repeating radar frames from the burst pattern using the detected power of the radar signal, each radar frame having at least one burst; and creating trigger signals corresponding to the radar frames, respectively, by synchronizing to the at least one burst in each radar frame.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: January 17, 2023
    Assignee: Keysight Technologies, Inc.
    Inventors: Dieter W. Vook, Paul L. Corredoura, Gregory S. Lee, Jefferson B. Burch
  • Patent number: 11543489
    Abstract: A system for testing vehicular radar is described. The system include a diffractive optical element (DOE) configured to diffract electromagnetic waves incident on a first side from a radar device under test (DUT). The system also includes a re-illumination element adapted to receive the electromagnetic waves diffracted from the DOE from a second side. The re-illumination element being adapted to transmit apparent angle of arrival (AoA) electromagnetic waves back to the DOE.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: January 3, 2023
    Assignee: Keysight Technologies, Inc.
    Inventor: Gregory S. Lee
  • Publication number: 20220397661
    Abstract: A method and system are provided for generating a trigger signal from a radar signal received over the air from a radar under test. The method includes detecting power of the radar signal received from the radar under test at a radio frequency (RF) power detector, the radar signal including multiple bursts of RF energy in a burst pattern; identifying repeating radar frames from the burst pattern using the detected power of the radar signal, each radar frame having at least one burst; and creating trigger signals corresponding to the radar frames, respectively, by synchronizing to the at least one burst in each radar frame.
    Type: Application
    Filed: March 31, 2020
    Publication date: December 15, 2022
    Inventors: Dieter W. Vook, Paul L. Corredoura, Gregory S. Lee, Jefferson B. Burch
  • Publication number: 20220390808
    Abstract: Electro-optic (EO) modulators are disclosed. The EO modulators include a substrate and an EO material layer disposed over the substrate. The EO material layer and the substrate provide an optical waveguide having an optical group velocity (OGV). The EO modulators also include electrodes disposed over the EO material layer to provide a coplanar waveguide (CPW). The CPW has a radio-frequency (RF) phase velocity, and the electrodes have a gap therebetween. The EO modulators also include a superstrate disposed over the EO material layer and configured to be raised and lowered, or disposed and removed to tune the RF phase velocity to be substantially the same as the OGV, wherein a space exists between the superstrate and the EO material.
    Type: Application
    Filed: March 7, 2022
    Publication date: December 8, 2022
    Inventor: Gregory S. Lee
  • Patent number: 11520008
    Abstract: A method of testing vehicular radar includes acquiring binary phase codes of transmitters in a radar DUT; acquiring desired FOVs and desired angular resolutions of the transmitters to determine target angles of emulated targets; calculating far field phases of a PMCW signal for binary phase states of the transmit array at each of the target angles to determine resultant phase symbol streams; calculating excess roundtrip time delay for each emulation delay, between the DUT and the emulated targets, and each setup delay between the DUT and each emulator receiver; time-shifting the resultant phase symbol streams by the excess roundtrip time delays; subtracting the time-shifted resultant phase symbol streams from the resultant phase symbol streams to obtain difference phase symbol streams; modulating a PMCW signal transmitted by the DUT by the difference phase symbol streams; and emulating the echo signals at the target angles in response to the modulated PMCW signal.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: December 6, 2022
    Assignee: Keysight Technologies, Inc.
    Inventor: Gregory S. Lee
  • Publication number: 20220260674
    Abstract: A miniature radar target simulator (MRTS) and a system comprising a plurality of MRTS's are described. The MRTS and system are useful for emulating echo signals for a radar DUT with reduced interference. Illustrative radar test systems desirably generate the intended (emulated) radar targets and reduce unwanted (“ghost”) signals, which can result in “ghost targets,” and errant/ambient electromagnetic radiation that reduces the performance and reliability of known re-illuminators and systems including same.
    Type: Application
    Filed: February 15, 2021
    Publication date: August 18, 2022
    Inventors: Gregory Douglas Vanwiggeren, Todd Steven Marshall, Gregory S. Lee, Natalie Killeen, Christian Bourde
  • Patent number: 11408993
    Abstract: A device for detecting and selectively reflecting an incident microwave signal or millimeter-wave signal is disclosed. The device includes a plurality of antennae disposed in an array; and a diode disposed at each input of each antenna, each diode having an input adapted to selectively receive a reverse bias signal, or a zero bias signal, or a forward bias signal. The device also includes a switching device connected to each input, and configured to selectively apply the forward bias signal, or the reverse bias signal or the zero bias signal to each of the diodes. In forward bias, each of the plurality of antennae reflects the incident microwave signal or millimeter wave signal; and in zero bias or reverse bias each of the plurality of antennae detects the incident microwave signal or millimeter wave signal.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: August 9, 2022
    Assignee: Keysight Technologies, Inc.
    Inventors: Gregory S. Lee, Paul L. Corredoura
  • Publication number: 20220179044
    Abstract: An apparatus is for generating an emulated radar reflection signal of a target moving at a relative velocity. The apparatus includes a radar detector, an emulation transmitter, and a processor. The radar detector is configured to detect radar chirps emitted by a device under test (DUT), where the chirps are emitted at random time intervals. The emulation transmitter is configured to generate emulated radar reflection signals of the target being emulated. The processor is configured to generate control signals at intervals corresponding to the random time intervals at which the radar chirps are emitted by the DUT, where each control signal controls the emulation transmitter to generate a radar reflection signal. A relative phase of the control signals is adjusted according to a duration of each of the random time intervals between successive chirps and a magnitude and sign of the relative velocity of the target.
    Type: Application
    Filed: June 16, 2021
    Publication date: June 9, 2022
    Inventors: Dietrich W. Vook, Todd Steven Marshall, Jefferson B. Burch, Gregory S. Lee
  • Publication number: 20220179043
    Abstract: An apparatus is for generating an emulated radar reflection signal of a target. The apparatus includes a radar detector configured to detect a radar signal frame emitted by a device under test (DUT), an emulation transmitter configured to generate an emulated radar reflection signal of a target being emulated, and a processor configured to generate control signals which control the emulation transmitter according to at least one characteristic of the target being emulated. The processor is further configured to determine a current radar parameter among plural possible radar parameters of the radar signal frame of the DUT, and to adapt the control signals which control the emulation transmitter according to the determined current radar parameter of the radar signal frame of the DUT.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 9, 2022
    Inventors: Dieter W. Vook, Todd Steven Marshall, Jefferson B. Burch, Gregory S. Lee
  • Publication number: 20220018934
    Abstract: A system for testing vehicular radar is disclosed. The system includes a re-illumination element adapted to receive electromagnetic waves, and to transmit response signals. The re-illumination element includes: a plurality of miniature radar target simulators (MRTS's), each comprising: a receive antenna; a variable gain amplifier (VGA); an in-phase-quadrature (IQ) mixer; a variable attenuator; and a transmit antenna. The MRTS's are disposed in an array comprising rows and columns of the MRTS's, and each MRTS of the array is laterally spaced a distance px and vertically spaced a distance py from an adjacent MRTS. An incremental subtended azimuth angle (??) and an incremental subtended elevation (??) angle are finer than an azimuth resolution specification (?res) and an elevation resolution specification (?res) of a radar device under test (DUT).
    Type: Application
    Filed: January 25, 2021
    Publication date: January 20, 2022
    Inventors: Gregory S. Lee, Gregory Douglas Vanwiggeren, Ken A. Nishimura
  • Publication number: 20210405153
    Abstract: A system for testing vehicular radar is described. The system include a free-space polarization adapter (FSPA) configured to alter a first polarization state of electromagnetic waves from a radar device under test (DUT) to a second polarization state, which is different than the first polarization state; and a re-illuminator adapted to receive the electromagnetic waves having the second polarization state from the FSPA.
    Type: Application
    Filed: November 13, 2020
    Publication date: December 30, 2021
    Inventor: Gregory S. Lee
  • Publication number: 20210319469
    Abstract: A reward card platform includes a database storing funding accounts, reward card purchase transactions, reward card brand options, and denomination options. The platform provides a user interface for purchasing reward cards from multiple third party suppliers. The user interface commits reward card purchase transactions using the funding accounts and specified reward card brand and denomination options. The platform obtains reward card items from supplier APIs corresponding to specified reward card brand and denomination options. The platform includes a buffer storing reward card inventory items.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 14, 2021
    Inventors: J J. Zabkar, Israel E. Evans, James A. Johnston, Gregory S. Lee, Chek T. Lim
  • Publication number: 20210265742
    Abstract: A system tests a device under test (DUT) that includes an antenna. The system includes a probe antenna, a network emulator, and a near-field antenna. The probe antenna measures beam characteristics of a beam-locked beam emitted over the air by the antenna of the DUT as the DUT is moved relative to the probe antenna during testing of the DUT. The network emulator emulates a base station of a communications network in communications with the DUT. The near-field antenna maintains a call link between the network emulator and the DUT using surface waves between the near-field antenna and the DUT as the DUT is moved relative to the probe antenna.
    Type: Application
    Filed: September 5, 2018
    Publication date: August 26, 2021
    Inventors: Gregory S. Lee, Dieter W. Vook
  • Patent number: 11042892
    Abstract: A reward card platform includes a database storing funding accounts, reward card purchase transactions, reward card brand options, and denomination options. The platform provides a user interface for purchasing reward cards from multiple third party suppliers. The user interface commits reward card purchase transactions using the funding accounts and specified reward card brand and denomination options. The platform obtains reward card items from supplier APIs corresponding to specified reward card brand and denomination options. The platform includes a buffer storing reward card inventory items.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: June 22, 2021
    Assignee: Tango Card, Inc.
    Inventors: J J Zabkar, Israel E. Evans, James A. Johnston, Gregory S. Lee, Chek T. Lim