Patents by Inventor Duixian Liu

Duixian Liu 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: 20200161744
    Abstract: Antenna package structures are provided to implement wireless communications packages. For example, an antenna package includes multilayer package substrate, a planar antenna array, antenna feed lines, and resistive transmission lines. The planar antenna array includes an array of active antenna elements and dummy antenna elements surrounding the array of active antenna elements. Each active antenna element is coupled to a corresponding one of the antenna feed lines, and each dummy antenna element is coupled to a corresponding one of the resistive transmission lines. Each resistive transmission line extends through the multilayer package substrate and is terminated in a same metallization layer of the multilayer package substrate.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Inventors: Christian W. Baks, Daniel J. Friedman, Xiaoxiong Gu, Duixian Liu, Alberto Valdes Garcia, Joakim Hallin, Ola Ragnar Tageman
  • Patent number: 10594019
    Abstract: Antenna package structures are provided to implement wireless communications packages. For example, an antenna package includes multilayer package substrate, a planar antenna array, antenna feed lines, and resistive transmission lines. The planar antenna array includes an array of active antenna elements and dummy antenna elements surrounding the array of active antenna elements. Each active antenna element is coupled to a corresponding one of the antenna feed lines, and each dummy antenna element is coupled to a corresponding one of the resistive transmission lines. Each resistive transmission line extends through the multilayer package substrate and is terminated in a same metallization layer of the multilayer package substrate.
    Type: Grant
    Filed: December 3, 2016
    Date of Patent: March 17, 2020
    Assignees: International Business Machines Corporation, Ericsson AB
    Inventors: Christian W. Baks, Daniel J. Friedman, Xiaoxiong Gu, Duixian Liu, Alberto Valdes Garcia, Joakim Hallin, Ola Ragnar Tageman
  • Publication number: 20190319338
    Abstract: An apparatus includes an antenna array package cover comprising a radiating surface, a mating surface disposed opposite the radiating surface, and an array of antenna array sub-patterns wherein each antenna array sub-pattern comprises at least one antenna element. The antenna array package also includes an array of sub-pattern interface packages mated to the mating surface of the antenna array package cover. Each sub-pattern interface package of the array of sub-pattern interface packages comprises a package carrier, a sub-pattern integrated circuit electrically and mechanically coupled to the package carrier, and a set of interface lines corresponding to the antenna elements of the antenna array sub-pattern that corresponds to the sub-pattern interface package. Methods for mounting the above apparatus into a host circuit are also disclosed herein.
    Type: Application
    Filed: April 13, 2018
    Publication date: October 17, 2019
    Inventors: Xiaoxiong Gu, Duixian Liu, Christian W. Baks, Alberto Valdes Garcia
  • Patent number: 10431892
    Abstract: Package structures are provided having antenna-in-packages that are integrated with semiconductor RFIC (radio frequency integrated circuit) chips to form compact integrated radio/wireless communications systems that operate in the millimeter wave (mmWave) frequency range with radiation in broadside and end-fire directions.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 1, 2019
    Assignee: International Business Machines Corporation
    Inventors: Alberto V. Garcia, Xiaoxiong Gu, Duixian Liu
  • Patent number: 10424846
    Abstract: Antenna devices, antenna systems and methods of their fabrication are disclosed. One such antenna device includes a semiconductor chip and a chip package. The semiconductor chip includes at least one antenna that is integrated into a dielectric layer of the semiconductor chip and is configured to transmit electromagnetic waves. In addition, the chip package includes at least one ground plane, where the semiconductor chip is mounted on the chip package such that the ground plane(s) is disposed at a predetermined distance from the antenna to implement a reflection of at least a portion of the electromagnetic waves.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: September 24, 2019
    Assignee: International Business Machines Corporation
    Inventors: Duixian Liu, Arun S. Natarajan, Jean-Olivier Plouchart, Scott K. Reynolds
  • Publication number: 20190288540
    Abstract: Systems, devices, and techniques facilitating wirelessly charging and/or communicating with one or more electronic devices (e.g., electronic wearable devices) are provided. A device can comprise a memory and a storage component that can be operatively coupled to the memory. The storage component can comprise one or more recesses that can receive a second device that can be charged by the storage component. The storage component can comprise a charging circuit and an inductive circuit that can be coupled to the charging circuit. The storage component can harvest energy from one or more energy sources to charge the charging circuit. Based on the energy harvested, the inductive circuit can inductively couple to the second device having a second inductive circuit and positioned in at least one of the recesses and the inductive circuit can charge a power source of the second device.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 19, 2019
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart, John Knickerbocker
  • Publication number: 20190260109
    Abstract: Techniques regarding a scalable phased array are provided. For example, various embodiments described herein can comprise a plurality of integrated circuits having respective flip chip pads, and an antenna-in-package substrate having a ball grid array terminal and a plurality of transmission lines. The plurality of transmission lines can be embedded within the antenna-in-package substrate and can operatively couple the respective flip chip pads to the ball grid array terminal. In one or more embodiments, a die can comprise the plurality of integrated circuits. Further, in one or more embodiments a combiner can also be embedded in the antenna-in-package substrate. The combiner can join the plurality of transmission lines.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 22, 2019
    Inventors: Xiaoxiong Gu, Wooram Lee, Duixian Liu, Christian Wilhelmus Baks, Alberto Valdes-Garcia
  • Publication number: 20190260138
    Abstract: Techniques regarding a scalable phased array are provided. For example, various embodiments described herein can comprise a plurality of integrated circuits having respective flip chip pads, and an antenna-in-package substrate having a ball grid array terminal and a plurality of transmission lines. The plurality of transmission lines can be embedded within the antenna-in-package substrate and can operatively couple the respective flip chip pads to the ball grid array terminal. In one or more embodiments, a die can comprise the plurality of integrated circuits. Further, in one or more embodiments a combiner can also be embedded in the antenna-in-package substrate. The combiner can join the plurality of transmission lines.
    Type: Application
    Filed: February 21, 2018
    Publication date: August 22, 2019
    Inventors: Xiaoxiong Gu, Wooram Lee, Duixian Liu, Christian Wilhelmus Baks, Alberto Valdes-Garcia
  • Patent number: 10381730
    Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a first MMW transmitter that couples a first data modulated MMW signal to the first antenna coupling point and a second MMW transmitter that couples a second data modulated MMW signal to the second antenna coupling point. Coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction and coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: August 13, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Patent number: 10286198
    Abstract: Devices and methods are provided for controlled delivery of medical substances such as drugs and medication. For example, a microchip medical substance delivery device includes a control system, and a medical substance capsule that comprises a medical substance contained with a reservoir, and a release structure to release the medical substance from within the reservoir in response to an activation signal generated by the control system. The control system comprises a wireless signal receiving element, processor, actuator circuit, and power supply source. The wireless signal receiving element captures a wireless signal. The processor detects an activation code embedded within the captured wireless signal, and generates an actuator control signal in response to the detection of the activation code. The actuator circuit generates the activation signal in response to the actuator control signal generated by the processor. The power supply source provides power to operate components of the control system.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: May 14, 2019
    Assignee: International Business Machines Corporation
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart
  • Patent number: 10255467
    Abstract: RFID (radio frequency identification) systems are provided in which tag and interrogator devices implement a hybrid framework for signaling including an optical transmitter/receiver system and an RF transmitter/receiver system. For instance, an RFID tag device includes: optical receiver circuitry configured to receive an optical signal having an embedded clock signal from an interrogator device, and convert the optical signal into an electrical signal comprising the embedded clock signal; clock extraction circuitry configured to extract the embedded clock signal from the electrical signal, and output the extracted clock signal as a clock signal for controlling clocking functions of the tag device; voltage regulator circuitry configured to generate a regulated supply voltage from the electrical signal, wherein the regulated supply voltage is utilized as a bias voltage for components of the tag device; and data transmitter circuitry configured to wirelessly transmit tag data to the interrogator device.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: April 9, 2019
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Patent number: 10170838
    Abstract: Package structures are provided having antenna-in-packages that are integrated with semiconductor RFIC (radio frequency integrated circuit) chips to form compact integrated radio/wireless communications systems that operate in the millimeter wave (mmWave) frequency range with radiation in broadside and end-fire directions.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: January 1, 2019
    Assignee: International Business Machines Corporation
    Inventors: Alberto V. Garcia, Xiaoxiong Gu, Duixian Liu
  • Patent number: 10103450
    Abstract: Package structures are provided for integrally packaging antennas with semiconductor RFIC (radio frequency integrated circuit) chips to form compact integrated radio/wireless communications systems that operate in the millimeter-wave and terahertz frequency ranges. For example, a package structure includes an RFIC chip, and an antenna package bonded to the RFIC chip. The antenna package includes a glass substrate, at least one planar antenna element formed on a first surface of the glass substrate, a ground plane formed on a second surface of the glass substrate, opposite the first surface, and an antenna feed line formed through the glass substrate and connected to the at least one planar antenna element. The antenna package is bonded to a surface of the RFIC chip using a layer of adhesive material.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: October 16, 2018
    Assignee: International Business Machines Corporation
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart, Peter Jerome Sorce, Cornelia Kang-I Tsang
  • Patent number: 10090889
    Abstract: RFID (radio frequency identification) systems are provided in which tag and interrogator devices implement a hybrid framework for signaling including an optical transmitter/receiver system and an RF transmitter/receiver system. For instance, an RFID tag device includes: optical receiver circuitry configured to receive an optical signal having an embedded clock signal from an interrogator device, and convert the optical signal into an electrical signal comprising the embedded clock signal; clock extraction circuitry configured to extract the embedded clock signal from the electrical signal, and output the extracted clock signal as a clock signal for controlling clocking functions of the tag device; voltage regulator circuitry configured to generate a regulated supply voltage from the electrical signal, wherein the regulated supply voltage is utilized as a bias voltage for components of the tag device; and data transmitter circuitry configured to wirelessly transmit tag data to the interrogator device.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: October 2, 2018
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Patent number: 10056672
    Abstract: Embodiments include package structures having integrated waveguides to enable high data rate communication between package components. For example, a package structure includes a package substrate having an integrated waveguide, and first and second integrated circuit chips mounted to the package substrate. The first integrated circuit chip is coupled to the integrated waveguide using a first transmission line to waveguide transition, and the second integrated circuit chip is coupled to the integrated waveguide using a second transmission line to waveguide transition. The first and second integrated circuit chips are configured to communicate by transmitting signals using the integrated waveguide within the package carrier.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 21, 2018
    Assignee: International Business Machines Corporation
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart, Alberto Valdes-Garcia
  • Patent number: 10038232
    Abstract: Embodiments include package structures having integrated waveguides to enable high data rate communication between package components. For example, a package structure includes a package substrate having an integrated waveguide, and first and second integrated circuit chips mounted to the package substrate. The first integrated circuit chip is coupled to the integrated waveguide using a first transmission line to waveguide transition, and the second integrated circuit chip is coupled to the integrated waveguide using a second transmission line to waveguide transition. The first and second integrated circuit chips are configured to communicate by transmitting signals using the integrated waveguide within the package carrier.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 31, 2018
    Assignee: International Business Machines Corporation
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart, Alberto Valdes-Garcia
  • Patent number: 10033081
    Abstract: Embodiments include package structures having integrated waveguides to enable high data rate communication between package components. For example, a package structure includes a package substrate having an integrated waveguide, and first and second integrated circuit chips mounted to the package substrate. The first integrated circuit chip is coupled to the integrated waveguide using a first transmission line to waveguide transition, and the second integrated circuit chip is coupled to the integrated waveguide using a second transmission line to waveguide transition. The first and second integrated circuit chips are configured to communicate by transmitting signals using the integrated waveguide within the package carrier.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 24, 2018
    Assignee: International Business Machines Corporation
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart, Alberto Valdes-Garcia
  • Publication number: 20180189530
    Abstract: RFID (radio frequency identification) systems are provided in which tag and interrogator devices implement a hybrid framework for signaling including an optical transmitter/receiver system and an RF transmitter/receiver system. For instance, an RFID tag device includes: optical receiver circuitry configured to receive an optical signal having an embedded clock signal from an interrogator device, and convert the optical signal into an electrical signal comprising the embedded clock signal; clock extraction circuitry configured to extract the embedded clock signal from the electrical signal, and output the extracted clock signal as a clock signal for controlling clocking functions of the tag device; voltage regulator circuitry configured to generate a regulated supply voltage from the electrical signal, wherein the regulated supply voltage is utilized as a bias voltage for components of the tag device; and data transmitter circuitry configured to wirelessly transmit tag data to the interrogator device.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 5, 2018
    Inventors: DANIEL J. FRIEDMAN, Duixian Liu, Mihai A. Sanduleanu
  • Patent number: 10007819
    Abstract: RFID (radio frequency identification) systems are provided in which tag and interrogator devices implement a hybrid framework for signaling including an optical transmitter/receiver system and an RF transmitter/receiver system. For instance, an RFID tag device includes: optical receiver circuitry configured to receive an optical signal having an embedded clock signal from an interrogator device, and convert the optical signal into an electrical signal comprising the embedded clock signal; clock extraction circuitry configured to extract the embedded clock signal from the electrical signal, and output the extracted clock signal as a clock signal for controlling clocking functions of the tag device; voltage regulator circuitry configured to generate a regulated supply voltage from the electrical signal, wherein the regulated supply voltage is utilized as a bias voltage for components of the tag device; and data transmitter circuitry configured to wirelessly transmit tag data to the interrogator device.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: June 26, 2018
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Publication number: 20180159203
    Abstract: Antenna package structures are provided to implement wireless communications packages. For example, an antenna package includes multilayer package substrate, a planar antenna array, antenna feed lines, and resistive transmission lines. The planar antenna array includes an array of active antenna elements and dummy antenna elements surrounding the array of active antenna elements. Each active antenna element is coupled to a corresponding one of the antenna feed lines, and each dummy antenna element is coupled to a corresponding one of the resistive transmission lines. Each resistive transmission line extends through the multilayer package substrate and is terminated in a same metallization layer of the multilayer package substrate.
    Type: Application
    Filed: December 3, 2016
    Publication date: June 7, 2018
    Inventors: Christian W. Baks, Daniel J. Friedman, Xiaoxiong Gu, Duixian Liu, Alberto Valdes Garcia, Joakim Hallin, Ola Ragnar Tageman