Patents by Inventor Nai-Chen LIU

Nai-Chen 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: 20240079767
    Abstract: An antenna module is provided. The antenna module includes a dielectric substrate, a radio frequency integrated circuit (RFIC) and a first number of first antennas. The radio frequency integrated circuit (RFIC) is disposed on the dielectric substrate, wherein the RFIC comprises a single first antenna port group and second antenna port groups to receive or transmit signals. The first number of first antennas is arranged in a first row on the dielectric substrate, wherein at least two of the first antennas are connected to the first antenna port group of the RFIC.
    Type: Application
    Filed: August 24, 2023
    Publication date: March 7, 2024
    Inventors: Yen-Ju LIN, Wun-Jian LIN, Shih-Huang YEH, Nai-Chen LIU
  • Publication number: 20240072426
    Abstract: An antenna and an electronic device including the antenna are provided. The antenna includes a pair of radiators, a pair of feeding elements, first and second feeding ports. The radiators are located beside a geometric origin and separated from each other. The geometric origin is located between the radiators. The feeding elements are located below the pair of radiators and are configured to feed signals to the radiators. The pair of feeding elements includes a first feeding element and a second feeding element that are separated from each other. The first feeding element has a first geometric configuration. The second feeding element has a second geometric configuration that is asymmetric to the first geometric configuration. The first feeding port is electrically connected to the first feeding element. The second feeding port is separated from the first feeding port and electrically connected to the second feeding element.
    Type: Application
    Filed: August 22, 2023
    Publication date: February 29, 2024
    Inventors: Nai-Chen LIU, Chung-Hsin CHIANG, Wun-Jian LIN, Shih-Huang YEH
  • Publication number: 20240047886
    Abstract: An antenna device with a tunable gain, includes a ground plane and a plurality of resonating units. A first resonating unit of the resonating units includes the following elements. A radiating plate, is arranged above the ground plane, and substantially parallel with the ground plane. A ground wall, is arranged between the radiating plate and the ground plane, and substantially perpendicular to the ground plane. A first connecting element, extends along a predefined direction substantially perpendicular to the ground plane. The first connecting element is adapted to couple the radiating plate to the ground plane.
    Type: Application
    Filed: July 14, 2023
    Publication date: February 8, 2024
    Inventors: Nai-Chen LIU, Chung-Hsin CHIANG, Yen-Ju LIN
  • Publication number: 20240039165
    Abstract: An antenna is provided. The antenna includes a first radiator and a second radiator. The first radiator includes a first section and a second section. The first section includes a first grounding edge and a first bending edge. The second section is connected to the first bending edge. The first grounding edge is grounded. The first section is not parallel to the second section. A first slot is formed on the first section. The second radiator includes a third section and a fourth section. The third section includes a second grounding edge and a second bending edge. The fourth section is connected to the second bending edge. The second grounding edge is grounded. The third section is not parallel to the fourth section. The first section is parallel to the third section.
    Type: Application
    Filed: June 29, 2023
    Publication date: February 1, 2024
    Inventors: Hsuan-Jui CHANG, Nai-Chen LIU, Shih-Huang YEH, Chung-Hsin CHIANG, Wun-Jian LIN
  • Patent number: 11764451
    Abstract: A waveguide structure includes a dielectric layer, a plurality of circuit layers, a plurality of insulation layers, and a conductor connection layer. The dielectric layer has an opening. The circuit layers are disposed on the dielectric layer. The insulation layers and the circuit layers are alternately stacked. The conductor connection layer covers an outer wall of the opening in a direction perpendicular to the circuit layers and connects at least two circuit layers on two opposite sides of the opening. At least the conductor connection layer and a part of the circuit layers define an air cavity for transmitting signals at a position corresponding to the opening.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: September 19, 2023
    Assignee: Subtron Technology Co., Ltd.
    Inventors: Jenn-Hwan Tarng, Nai-Chen Liu, Yin-Kai Lin, Tsung-Han Lee, Chao-Wei Chang
  • Publication number: 20230268656
    Abstract: An antenna is provided. The antenna includes a first radiator positioned at a first level and connected to a ground plane at a second level. In a top view, the first radiator has a first edge, a second edge, a third edge, a fourth edge and a first arc edge. The second edge and the third edge are connected to opposite ends of the first edge. The fourth edge is connected to an end of the third edge opposite to the first edge. The first arc edge with a first radius has opposite ends respectively connected to the second edge and the fourth edge. The first arc edge has a first arc length corresponding to a first central angle, which is less than 90 degrees.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 24, 2023
    Inventors: Chung-Hsin CHIANG, Nai-Chen LIU, Shih-Huang YEH
  • Publication number: 20210384618
    Abstract: A waveguide structure includes a dielectric layer, a plurality of circuit layers, a plurality of insulation layers, and a conductor connection layer. The dielectric layer has an opening. The circuit layers are disposed on the dielectric layer. The insulation layers and the circuit layers are alternately stacked. The conductor connection layer covers an outer wall of the opening in a direction perpendicular to the circuit layers and connects at least two circuit layers on two opposite sides of the opening. At least the conductor connection layer and a part of the circuit layers define an air cavity for transmitting signals at a position corresponding to the opening.
    Type: Application
    Filed: January 20, 2021
    Publication date: December 9, 2021
    Applicant: Subtron Technology Co., Ltd.
    Inventors: Jenn-Hwan Tarng, Nai-Chen Liu, Yin-Kai Lin, Tsung-Han Lee, Chao-Wei Chang
  • Patent number: 11145983
    Abstract: A dual-polarized patch antenna includes a first insulating substrate; conductive connections, each of which passes through the first insulating substrate, and which are arranged to form a resonant cavity and two feeding ports; first and second metal layers respectively disposed on two opposite surfaces of the first insulating substrate, the second metal layer being formed with a cross-shaped slot that corresponds in position to the resonant cavity; a second insulating substrate disposed on the second metal layer; and four radiation patch units disposed on the second insulating substrate, and corresponding in position to four regions that are on the second metal layer and that are spaced apart by the cross-shaped slot.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: October 12, 2021
    Assignee: National Chiao Tung University
    Inventors: Jenn-Hwan Tarng, Chih-Wei Chiu, Nai-Chen Liu
  • Patent number: 10916860
    Abstract: A pattern reconfigurable antenna includes a radiator, a first parasitic element, a second parasitic element, a ground plane, a first switch and a second switch. The radiator includes a feed portion and a radiating portion that are interconnected. The first and second parasitic elements are symmetrically located at two opposite sides of the radiating portion, and are closely adjacent to and spaced apart from the radiating portion. The ground plane is located at another side of the radiating portion, and is spaced apart from the first and second parasitic elements. Each of the first and second switches is connected between the ground plane and a respective one of the first and second parasitic elements, and is operable to establish connection between the same.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: February 9, 2021
    Assignee: National Chaio Tung University Quanta Computer Inc.
    Inventors: Jenn-Hwan Tarng, Yu-Chen Lo, Sung-Jung Wu, Nai-Chen Liu
  • Publication number: 20200203848
    Abstract: A pattern reconfigurable antenna includes a radiator, a first parasitic element, a second parasitic element, a ground plane, a first switch and a second switch. The radiator includes a feed portion and a radiating portion that are interconnected. The first and second parasitic elements are symmetrically located at two opposite sides of the radiating portion, and are closely adjacent to and spaced apart from the radiating portion. The ground plane is located at another side of the radiating portion, and is spaced apart from the first and second parasitic elements. Each of the first and second switches is connected between the ground plane and a respective one of the first and second parasitic elements, and is operable to establish connection between the same.
    Type: Application
    Filed: May 24, 2019
    Publication date: June 25, 2020
    Inventors: Jenn-Hwan TARNG, Yu-Chen LO, Sung-Jung WU, Nai-Chen LIU