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: 20230293013
    Abstract: A system for interfacing an in-body medical device with an external network includes a subdermal wideband on-body network (WON) hub, which in turn includes a hub rechargeable battery, a hub processor coupled to the hub rechargeable battery, a device interface configured to communicate with the in-body medical device, and coupled to the hub processor, and a hub-satellite near field communications wireless interface coupled to the hub processor. The system also includes a wearable WON server that in turn includes a server processor, a server-satellite interface coupled to the server processor, and an external network interface coupled to the server processor.
    Type: Application
    Filed: May 30, 2023
    Publication date: September 21, 2023
    Inventors: Bo Wen, Bing Dang, Jeffrey L. Rogers, Duixian Liu
  • Patent number: 11710902
    Abstract: A package structure is provided that includes a planar core structure comprising a first side and a second side opposite the first side. The package structure also includes an antenna structure disposed on the first side of the planar core structure. The antenna structure comprises a plurality of first laminated layers, each first laminated layer comprising a first patterned conductive layer formed on a first insulating layer, an antenna formed on one or more first patterned conductive layers of the first laminated layers, the antenna including at least one L-shaped structure. The package structure also includes an interface structure disposed on the second side of the planar core structure, and an antenna feed line structure formed in, and routed through, the interface structure and the planar core structure, wherein the antenna feed line structure is not connected to the planar antenna.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: July 25, 2023
    Assignee: International Business Machines Corporation
    Inventor: Duixian Liu
  • Patent number: 11696683
    Abstract: A system for interfacing an in-body medical device with an external network includes a subdermal wideband on-body network (WON) hub, which in turn includes a hub rechargeable battery, a hub processor coupled to the hub rechargeable battery, a device interface configured to communicate with the in-body medical device, and coupled to the hub processor, and a hub-satellite near field communications wireless interface coupled to the hub processor. The system also includes a wearable WON server that in turn includes a server processor, a server-satellite interface coupled to the server processor, and an external network interface coupled to the server processor.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: July 11, 2023
    Assignee: International Business Machines Corporation
    Inventors: Bo Wen, Bing Dang, Jeffrey L. Rogers, Duixian Liu
  • Patent number: 11658390
    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: January 23, 2020
    Date of Patent: May 23, 2023
    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: 20220248958
    Abstract: A system for interfacing an in-body medical device with an external network includes a subdermal wideband on-body network (WON) hub, which in turn includes a hub rechargeable battery, a hub processor coupled to the hub rechargeable battery, a device interface configured to communicate with the in-body medical device, and coupled to the hub processor, and a hub-satellite near field communications wireless interface coupled to the hub processor. The system also includes a wearable WON server that in turn includes a server processor, a server-satellite interface coupled to the server processor, and an external network interface coupled to the server processor.
    Type: Application
    Filed: February 10, 2021
    Publication date: August 11, 2022
    Inventors: Bo Wen, Bing Dang, Jeffrey L. Rogers, Duixian Liu
  • Publication number: 20220255230
    Abstract: A package structure is provided that includes a planar core structure comprising a first side and a second side opposite the first side. The package structure also includes an antenna structure disposed on the first side of the planar core structure. The antenna structure comprises a plurality of first laminated layers, each first laminated layer comprising a first patterned conductive layer formed on a first insulating layer, an antenna formed on one or more first patterned conductive layers of the first laminated layers, the antenna including at least one L-shaped structure. The package structure also includes an interface structure disposed on the second side of the planar core structure, and an antenna feed line structure formed in, and routed through, the interface structure and the planar core structure, wherein the antenna feed line structure is not connected to the planar antenna.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 11, 2022
    Inventor: Duixian Liu
  • Patent number: 11238327
    Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: February 1, 2022
    Assignee: International Business Machines Corporation
    Inventors: Arun Paidimarri, Bodhisatwa Sadhu, Duixian Liu, Alberto Valdes Garcia
  • Patent number: 11228111
    Abstract: An antenna that can be embedded in a computer system or device is described. In an example, the antenna includes a feed operable to transmit and receive power. The antenna includes a first arm being extended from the feed towards a first direction to form a first partial loop. The antenna further includes a second arm being extended from the feed towards a second direction to form a second partial loop. The second direction is different from the first direction.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: January 18, 2022
    Assignee: International Business Machines Corporation
    Inventors: Duixian Liu, Arun Paidimarri, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Patent number: 11189905
    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: Grant
    Filed: April 13, 2018
    Date of Patent: November 30, 2021
    Assignee: International Business Machines Corporation
    Inventors: Xiaoxiong Gu, Duixian Liu, Christian W. Baks, Alberto Valdes Garcia
  • Patent number: 11177843
    Abstract: A device includes a transmitter. A main antenna is coupled to the transmitter. A matching network coupled to the transmitter and configured to match an impedance of the main antenna, wherein one or more components of the matching network provide a desired radiation.
    Type: Grant
    Filed: March 23, 2019
    Date of Patent: November 16, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bodhisatwa Sadhu, Duixian Liu, Arun Paidimarri
  • Publication number: 20210150299
    Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.
    Type: Application
    Filed: December 28, 2020
    Publication date: May 20, 2021
    Inventors: Arun Paidimarri, Bodhisatwa Sadhu, Duixian Liu, Alberto Valdes Garcia
  • Patent number: 10965166
    Abstract: A radio frequency identification (RFID) system may include a plurality of RFID readers and RFID tags. A RFID reader may include an antenna configured to operate at a first frequency and transmit a first beam of a first beam width to the plurality of RFID tags. The RFID antenna may further include an antenna array including a plurality of antennas configured to operate at a second frequency. The antenna array may be configured to transmit a second beam of a second beam width to the plurality of RFID tags. The RFID reader may receive backscatter signals and tag data from the plurality of RFID tags. The RFID reader may locate the plurality of RFID tags based on the backscatter signals and a direction of the second beam. The RFID reader may generate a 3D map of the tag data based on the locations of the plurality of RFID tags.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: March 30, 2021
    Assignee: International Business Machines Corporaton
    Inventors: Arun Paidimarri, Bodhisatwa Sadhu, Duixian Liu, Alberto Valdes Garcia
  • Patent number: 10949730
    Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: March 16, 2021
    Assignee: International Business Machines Corporation
    Inventors: Arun Paidimarri, Bodhisatwa Sadhu, Duixian Liu, Alberto Valdes Garcia
  • Patent number: 10892643
    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: Grant
    Filed: March 14, 2018
    Date of Patent: January 12, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bing Dang, Duixian Liu, Jean-Olivier Plouchart, John Knickerbocker
  • Patent number: 10826194
    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: Grant
    Filed: February 21, 2018
    Date of Patent: November 3, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Wooram Lee, Duixian Liu, Christian Wilhelmus Baks, Alberto Valdes-Garcia
  • Publication number: 20200328522
    Abstract: An antenna that can be embedded in a computer system or device is described. In an example, the antenna includes a feed operable to transmit and receive power. The antenna includes a first arm being extended from the feed towards a first direction to form a first partial loop. The antenna further includes a second arm being extended from the feed towards a second direction to form a second partial loop. The second direction is different from the first direction.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Inventors: Duixian Liu, Arun Paidimarri, Bodhisatwa Sadhu, Alberto Valdes Garcia
  • Publication number: 20200304157
    Abstract: A device includes a transmitter. A main antenna is coupled to the transmitter. A matching network coupled to the transmitter and configured to match an impedance of the main antenna, wherein one or more components of the matching network provide a desired radiation.
    Type: Application
    Filed: March 23, 2019
    Publication date: September 24, 2020
    Inventors: Bodhisatwa Sadhu, Duixian Liu, Arun Paidimarri
  • Patent number: 10784563
    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: Grant
    Filed: February 21, 2018
    Date of Patent: September 22, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaoxiong Gu, Wooram Lee, Duixian Liu, Christian Wilhelmus Baks, Alberto Valdes-Garcia
  • Publication number: 20200266669
    Abstract: A radio frequency identification (RFID) system may include a plurality of RFID readers and RFID tags. A RFID reader may include an antenna configured to operate at a first frequency and transmit a first beam of a first beam width to the plurality of RFID tags. The RFID antenna may further include an antenna array including a plurality of antennas configured to operate at a second frequency. The antenna array may be configured to transmit a second beam of a second beam width to the plurality of RFID tags. The RFID reader may receive backscatter signals and tag data from the plurality of RFID tags. The RFID reader may locate the plurality of RFID tags based on the backscatter signals and a direction of the second beam. The RFID reader may generate a 3D map of the tag data based on the locations of the plurality of RFID tags.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 20, 2020
    Inventors: Arun Paidimarri, Bodhisatwa Sadhu, Duixian Liu, Alberto Valdes Garcia
  • Publication number: 20200265285
    Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 20, 2020
    Inventors: Arun Paidimarri, Bodhisatwa Sadhu, Duixian Liu, Alberto Valdes Garcia