Patents by Inventor Lixin Cai

Lixin Cai 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).

  • Publication number: 20230261371
    Abstract: An antenna element and an antenna array including the antenna element for generating or receiving a radio frequency (RF) signal are provided. The antenna element includes a dielectric layer including a first surface and a second surface opposite the first surface; a first dipole antenna comprising a first antenna segment and a second antenna segment, the first dipole antenna formed in the second surface; a second dipole antenna comprising a first antenna segment and a second antenna segment, the second dipole antenna formed in the second surface; a coupling segment capacitively coupled to each of the second antenna segment of the first dipole antenna and the second antenna segment of the second dipole antenna; and a shorting pin capacitively coupled to the coupling segment and extending from the first surface to the second surface.
    Type: Application
    Filed: February 14, 2022
    Publication date: August 17, 2023
    Inventors: Lixin Cai, Alec Adams
  • Publication number: 20230106696
    Abstract: Antenna elements include a metallic square ring patch and a metallic square ring slot to transmit or receive radio frequency (RF) signals. The antenna elements use several dielectric layers that are separated by a low-dielectric foam layer upon which the square ring patch is positioned. The disclosed antenna elements may be arranged together in an antenna array that is tunable to collectively generate or receive RF signals. In particular, the antenna array functions as a 256-element transmit/receive half-duplex antenna, operating in transmit or receive mode for half the time. The antenna array includes a radiator block, a transmit/receiver (T/R) amplifier block, a beamformer block, and a distribution network block.
    Type: Application
    Filed: January 28, 2022
    Publication date: April 6, 2023
    Inventors: Alec Adams, Mark Gregory Bedson, Lixin Cai, Ming Chen, Peter Timothy Heisen, Korey Martin Holmstrom
  • Publication number: 20230104894
    Abstract: Antenna elements are disclosed herein that include a metallic square ring patch and a metallic square ring slot to transmit or receive radio frequency (RF) signals. The disclosed antenna elements use several dielectric layers that are separated by two low-dielectric foam layers. The square ring patch is located above an upper foam layer, and a square ring slot is located between the upper foam layer and a bottom foam layer. Electrical feed lines are used to either supply electrical power to the antenna elements cells or output RF signals that are received by the square ring patch. The disclosed antenna elements may be arranged together in an antenna array that is tunable to collectively generate or receive RF signals.
    Type: Application
    Filed: January 28, 2022
    Publication date: April 6, 2023
    Inventors: Alec Adams, Lixin Cai, Robert John Greenlaw
  • Patent number: 11463166
    Abstract: Systems, methods, and apparatus for an electromagnetic (EM) panel are disclosed. In one or more embodiments, a disclosed electromagnetic (EM) panel comprises an outer skin, an inner skin, a core disposed between the outer skin and the inner skin, and at least one receiver to receive at least one first signal. In at least one embodiment, at least one receiver is disposed within an opening on the outer skin of the EM panel. At least one receiver is an optical sensor(s) and/or a radio frequency (RF) antenna(s). In one or more embodiments, the EM panel further comprises at least one transmitter to transmit at least one second signal. In at least one embodiment, at least one transmitter is disposed within an opening on the outer skin of the EM panel. At least one transmitter is a laser(s) and/or a RF antenna(s).
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: October 4, 2022
    Assignee: The Boeing Company
    Inventors: Manny S. Urcia, Jonathan M. St. Clair, Christopher M. La Fata, John G. Castagno, Ordie D. Butterfield, Stephen T. Tyahla, Alec Adams, Lixin Cai
  • Patent number: 11398683
    Abstract: A phased array antenna includes a resonant cavity, a plurality of feed waveguides, an array of slot antenna elements, and a plurality of phase shifters. The resonant cavity includes a boresight surface having a normal vector oriented with boresight for the phased array antenna. The plurality of feed waveguides is distributed along a perimeter of the resonant cavity and is configured to supply electromagnetic waves to the resonant cavity. The array of slot antenna elements is distributed about the boresight surface and configured to radiate a beam based on standing waves within the resonant cavity. Each of the plurality of phase shifters is respectively coupled with the plurality of feed waveguides and independently controllable to modify the respective phases of the standing waves to steer the beam.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: July 26, 2022
    Assignee: The Boeing Company
    Inventors: Alec Adams, Lixin Cai
  • Patent number: 11038273
    Abstract: An antenna assembly includes a base including one or more feed transitions, a support panel separated from the base, a patch secured to the support panel, and one or more T-shaped probes that couple the feed transition(s) to the patch. The T-shaped probe(s) are separated from the patch.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: June 15, 2021
    Assignee: THE BOEING COMPANY
    Inventors: Lixin Cai, Alec Adams, Manny Urcia
  • Publication number: 20210135372
    Abstract: A phased array antenna includes a resonant cavity, a plurality of feed waveguides, an array of slot antenna elements, and a plurality of phase shifters. The resonant cavity includes a boresight surface having a normal vector oriented with boresight for the phased array antenna. The plurality of feed waveguides is distributed along a perimeter of the resonant cavity and is configured to supply electromagnetic waves to the resonant cavity. The array of slot antenna elements is distributed about the boresight surface and configured to radiate a beam based on standing waves within the resonant cavity. Each of the plurality of phase shifters is respectively coupled with the plurality of feed waveguides and independently controllable to modify the respective phases of the standing waves to steer the beam.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 6, 2021
    Inventors: Alec Adams, Lixin Cai
  • Publication number: 20200358527
    Abstract: Systems, methods, and apparatus for an electromagnetic (EM) panel are disclosed. In one or more embodiments, a disclosed electromagnetic (EM) panel comprises an outer skin, an inner skin, a core disposed between the outer skin and the inner skin, and at least one receiver to receive at least one first signal. In at least one embodiment, at least one receiver is disposed within an opening on the outer skin of the EM panel. At least one receiver is an optical sensor(s) and/or a radio frequency (RF) antenna(s). In one or more embodiments, the EM panel further comprises at least one transmitter to transmit at least one second signal. In at least one embodiment, at least one transmitter is disposed within an opening on the outer skin of the EM panel. At least one transmitter is a laser(s) and/or a RF antenna(s).
    Type: Application
    Filed: July 23, 2020
    Publication date: November 12, 2020
    Inventors: Manny S. Urcia, Jonathan M. St. Clair, Christopher M. La Fata, John G. Castagno, Ordie D. Butterfield, Stephen T. Tyahla, Alec Adams, Lixin Cai
  • Patent number: 10797403
    Abstract: A dual ultra-wideband electronically scanning antenna linear array and a method for producing same is disclosed. In one embodiment, the antenna is comprised of circuit board-based multi-layered sections with integrated feeds. A first dielectric layer or substrate has a thin metal coating on the bottom surface to form a signal ground and metal coating on the top surface where capacitively loaded radiating dipoles are etched. Each of the dipole elements are connected to an associated conductive antenna feed disposed on a bottom surface of another dielectric layer disposed below the first dielectric layer.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: October 6, 2020
    Assignee: THE BOEING COMPANY
    Inventors: Alec Adams, Ming Chen, Lixin Cai
  • Patent number: 10756814
    Abstract: Systems, methods, and apparatus for an electromagnetic (EM) panel are disclosed. In one or more embodiments, a disclosed electromagnetic (EM) panel comprises an outer skin, an inner skin, a core disposed between the outer skin and the inner skin, and at least one receiver to receive at least one first signal. In at least one embodiment, at least one receiver is disposed within an opening on the outer skin of the EM panel. At least one receiver is an optical sensor(s) and/or a radio frequency (RF) antenna(s). In one or more embodiments, the EM panel further comprises at least one transmitter to transmit at least one second signal. In at least one embodiment, at least one transmitter is disposed within an opening on the outer skin of the EM panel. At least one transmitter is a laser(s) and/or a RF antenna(s).
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: August 25, 2020
    Assignee: The Boeing Company
    Inventors: Manny S. Urcia, Jonathan M. Saint Clair, Christopher M. La Fata, John G. Castagno, Ordie D. Butterfield, Stephen T. Tyahla, Alec Adams, Lixin Cai
  • Patent number: 10686254
    Abstract: A system, method, and apparatus for an antenna system. The antenna system comprises an aperture structure, a primary radiating slot, a tuning slot, and a stripline feed. The primary radiating slot and the tuning slot are both located in the aperture structure. The stripline feed is located between the primary radiating slot and the tuning slot in the aperture structure.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 16, 2020
    Assignee: The Boeing Company
    Inventors: Lixin Cai, Alec Adams, Manny S. Urcia, Jr.
  • Patent number: 10651566
    Abstract: Unit cells for phased array antennas are described. The unit cells include a plurality of dipole antennas that are used to form a phased array antenna. In particular, the unit cells that form the phased array antenna each include a plurality of dipole antennas formed on a surface of a substrate that are arranged to collectively form a triangle. A plurality of the unit cells may be linked together to form a triangular lattice array having almost any desired size and aperture, thereby allowing the RF engineer the freedom to achieve a wide variety of performance goals when designing a phased array antenna.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 12, 2020
    Assignee: The Boeing Company
    Inventors: Alec Adams, Lixin Cai
  • Publication number: 20190334252
    Abstract: A dual ultra-wideband electronically scanning antenna linear array and a method for producing same is disclosed. In one embodiment, the antenna is comprised of circuit board-based multi-layered sections with integrated feeds. A first dielectric layer or substrate has a thin metal coating on the bottom surface to form a signal ground and metal coating on the top surface where capacitively loaded radiating dipoles are etched. Each of the dipole elements are connected to an associated conductive antenna feed disposed on a bottom surface of another dielectric layer disposed below the first dielectric layer.
    Type: Application
    Filed: April 26, 2018
    Publication date: October 31, 2019
    Applicant: The Boeing Company
    Inventors: Alec Adams, Ming Chen, Lixin Cai
  • Publication number: 20190326685
    Abstract: Unit cells for phased array antennas are described. The unit cells include a plurality of dipole antennas that are used to form a phased array antenna. In particular, the unit cells that form the phased array antenna each include a plurality of dipole antennas formed on a surface of a substrate that are arranged to collectively form a triangle. A plurality of the unit cells may be linked together to form a triangular lattice array having almost any desired size and aperture, thereby allowing the RF engineer the freedom to achieve a wide variety of performance goals when designing a phased array antenna.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 24, 2019
    Inventors: Alec Adams, Lixin Cai
  • Patent number: 10340584
    Abstract: A structural panel of an aircraft is constructed with a multiphase antenna embedded inside the structural panel between multiple sheets of fiberglass.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: July 2, 2019
    Assignee: The Boeing Company
    Inventors: Manny S. Urcia, Andrew S. Niederschulte, Alec Adams, Lixin Cai, Timothy J. Luchini, Justin J. Schell
  • Publication number: 20190051976
    Abstract: A structural panel of an aircraft is constructed with a multiphase antenna embedded inside the structural panel between multiple sheets of fiberglass.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 14, 2019
    Applicant: The Boeing Company
    Inventors: Manny S. Urcia, JR., Andrew S. Niederschulte, Alec Adams, Lixin Cai, Timothy J. Luchini, Justin J. Schell
  • Publication number: 20180366831
    Abstract: A system, method, and apparatus for an antenna system. The antenna system comprises an aperture structure, a primary radiating slot, a tuning slot, and a stripline feed. The primary radiating slot and the tuning slot are both located in the aperture structure. The stripline feed is located between the primary radiating slot and the tuning slot in the aperture structure.
    Type: Application
    Filed: May 31, 2017
    Publication date: December 20, 2018
    Inventors: Lixin Cai, Alec Adams, Manny S. Urcia, Jr.
  • Patent number: 9977122
    Abstract: A multi-function radio frequency (RF) system may include a shared phased array antenna subsystem for transmitting and receiving radar signals and communications signals. The system may also include an integrated electronics package configured for controlling operation of the shared phased array antenna subsystem. The integrated electronics package may include a modulator/demodulator subsystem. The modulator/demodulator subsystem may include a radar module that is selectively coupled to the shared phased array antenna subsystem for transmitting and receiving radar signals. The radar module is configured to transmit and receive radar signals through the shared phased array antenna subsystem. The modulator/demodulator subsystem may also include a communications module that is selectively coupled to the shared phased array antenna subsystem for transmitting and receiving communications signals.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: May 22, 2018
    Assignee: The Boeing Company
    Inventors: Marty Allen Pitts, Julio A. Navarro, Lixin Cai
  • Publication number: 20170063454
    Abstract: Systems, methods, and apparatus for an electromagnetic (EM) panel are disclosed. In one or more embodiments, a disclosed electromagnetic (EM) panel comprises an outer skin, an inner skin, a core disposed between the outer skin and the inner skin, and at least one receiver to receive at least one first signal. In at least one embodiment, at least one receiver is disposed within an opening on the outer skin of the EM panel. At least one receiver is an optical sensor(s) and/or a radio frequency (RF) antenna(s). In one or more embodiments, the EM panel further comprises at least one transmitter to transmit at least one second signal. In at least one embodiment, at least one transmitter is disposed within an opening on the outer skin of the EM panel. At least one transmitter is a laser(s) and/or a RF antenna(s).
    Type: Application
    Filed: May 16, 2016
    Publication date: March 2, 2017
    Inventors: Manny S. Urcia, Jonathan M. Saint Clair, Christopher M. La Fata, John G. Castagno, Ordie D. Butterfield, Stephen T. Tyahla, Alec Adams, Lixin Cai
  • Publication number: 20160282462
    Abstract: A multi-function radio frequency (RF) system may include a shared phased array antenna subsystem for transmitting and receiving radar signals and communications signals. The system may also include an integrated electronics package configured for controlling operation of the shared phased array antenna subsystem. The integrated electronics package may include a modulator/demodulator subsystem. The modulator/demodulator subsystem may include a radar module that is selectively coupled to the shared phased array antenna subsystem for transmitting and receiving radar signals. The radar module is configured to transmit and receive radar signals through the shared phased array antenna subsystem. The modulator/demodulator subsystem may also include a communications module that is selectively coupled to the shared phased array antenna subsystem for transmitting and receiving communications signals.
    Type: Application
    Filed: March 27, 2015
    Publication date: September 29, 2016
    Inventors: Marty Allen Pitts, Julio A. Navarro, Lixin Cai