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).

  • Patent number: 9985346
    Abstract: Antenna package structures are provided to implement wireless communications packages. For example, an antenna package includes a package carrier and a package cover. The package carrier includes an antenna ground plane and an antenna feed line. The package cover includes a planar lid having a planar antenna element formed on a first surface of the planar lid. The package cover is bonded to a first surface of the package carrier with the first surface of the planar lid facing the first surface of the package carrier, and with the planar antenna element aligned to the antenna ground plane and the antenna feed line of the package carrier, wherein the first surface of the planar lid is disposed at a distance from the first surface of the package carrier to provide an air space between the planar antenna element and the package carrier.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: May 29, 2018
    Assignee: International Business Machines Corporation
    Inventors: Christian Wilhelmus Baks, Xiaoxiong Gu, Duixian Liu, Alberto Valdes-Garcia
  • Publication number: 20180108995
    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: Application
    Filed: November 17, 2017
    Publication date: April 19, 2018
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20180096179
    Abstract: Embodiments include systems, methods, and computer program products for tracking and sensing medical assets. Systems include a plurality of long range transmitters. Systems also include a medical asset box including a medical asset, a radio frequency ID microchip in proximity to the medical asset, and an extended antenna that is capable of receiving a signal from the radio frequency ID microchip and transmitting the signal to an external device.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 5, 2018
    Inventors: BING DANG, LI-WEN HUNG, JOHN U. KNICKERBOCKER, SHRIYA KUMAR, DUIXIAN LIU, ENRIQUE VARGAS
  • Publication number: 20180076526
    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: Application
    Filed: July 10, 2015
    Publication date: March 15, 2018
    Inventors: Alberto V. Garcia, Xiaoxiong Gu, Duixian Liu
  • Patent number: 9917368
    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: March 13, 2018
    Assignee: International Business Machines Corporation
    Inventors: Alberto V. Garcia, Xiaoxiong Gu, Duixian Liu
  • Patent number: 9912061
    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: May 18, 2016
    Date of Patent: March 6, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Patent number: 9831558
    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 single MMW transmitter device having a power splitter that splits a data modulated MMW signal into a first MMW data modulated signal and a second MMW data modulated signal identical to the first MMW data modulated signal, such that the first data modulated MMW signal is coupled to the first antenna coupling point for radio propagation at a first direction, and the second data modulated MMW signal is coupled to the second antenna coupling point for radio propagation at a second direction.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 28, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170338563
    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: Application
    Filed: May 18, 2016
    Publication date: November 23, 2017
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20170338564
    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 single MMW transmitter device having a power splitter that splits a data modulated MMW signal into a first MMW data modulated signal and a second MMW data modulated signal identical to the first MMW data modulated signal, such that the first data modulated MMW signal is coupled to the first antenna coupling point for radio propagation at a first direction, and the second data modulated MMW signal is coupled to the second antenna coupling point for radio propagation at a second direction.
    Type: Application
    Filed: March 22, 2017
    Publication date: November 23, 2017
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Patent number: 9819098
    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: September 11, 2013
    Date of Patent: November 14, 2017
    Assignee: International Business Machines Corporation
    Inventors: Xiaoxiong Gu, Alberto V. Garcia, Duixian Liu, Scott K. Reynolds
  • Publication number: 20170317418
    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: Application
    Filed: July 12, 2017
    Publication date: November 2, 2017
    Inventors: Alberto V. Garcia, Xiaoxiong Gu, Duixian Liu
  • Patent number: 9806422
    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: December 10, 2014
    Date of Patent: October 31, 2017
    Assignee: International Business Machines Corporation
    Inventors: Alberto V. Garcia, Xiaoxiong Gu, Duixian Liu
  • Publication number: 20170291019
    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: Application
    Filed: April 8, 2016
    Publication date: October 12, 2017
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart
  • Publication number: 20170272125
    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: June 7, 2017
    Publication date: September 21, 2017
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Patent number: 9755701
    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: March 31, 2015
    Date of Patent: September 5, 2017
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Patent number: 9734371
    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 25, 2015
    Date of Patent: August 15, 2017
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Publication number: 20170229783
    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: Application
    Filed: April 21, 2017
    Publication date: August 10, 2017
    Inventors: DUIXIAN LIU, ARUN S. NATARAJAN, JEAN-OLIVIER PLOUCHART, SCOTT K. REYNOLDS
  • Publication number: 20170228568
    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: April 26, 2017
    Publication date: August 10, 2017
    Inventors: Daniel J. Friedman, Duixian Liu, Mihai A. Sanduleanu
  • Patent number: 9692106
    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: May 29, 2015
    Date of Patent: June 27, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Duixian Liu, Arun S. Natarajan, Jean-Olivier Plouchart, Scott K. Reynolds
  • Patent number: 9660345
    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 single MMW transmitter device having a power splitter that splits a data modulated MMW signal into a first MMW data modulated signal and a second MMW data modulated signal identical to the first MMW data modulated signal, such that the first data modulated MMW signal is coupled to the first antenna coupling point for radio propagation at a first direction, and the second data modulated MMW signal is coupled to the second antenna coupling point for radio propagation at a second direction.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: May 23, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Duixian Liu, Bodhisatwa Sadhu, Alberto Valdes Garcia