Patents by Inventor Changfu Chen

Changfu Chen 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: 20260312286
    Abstract: The present disclosure relates to a radiating element, and the radiating element includes: a radiator with a radiating arm, the radiator configured to emit first electromagnetic radiation within a predetermined first operating frequency band; and a parasitic metal pattern, where a resonant circuit is formed between the radiating arm of the radiator and the parasitic metal pattern, and the resonant circuit is configured to allow an operating current on the radiating arm within the first operating frequency band to pass, but prevent an inductive current induced on the radiating arm and within a second operating frequency band. In addition, the present disclosure also relates to a base station antenna having the radiating element (FIG. 4).
    Type: Application
    Filed: July 25, 2023
    Publication date: October 8, 2026
    Inventors: Jian ZHANG, Changfu CHEN, Cheng XUE, Bin SUN, Fei LI
  • Publication number: 20260302631
    Abstract: A radiating element comprises a feeder pillar and a radiator positioned at the front end of the feeder pillar. The radiator comprises a first part located on a first side of the feeder pillar and a second part located on a second side of the feeder pillar opposite the first side, where the size of the first part of the radiator is larger than the size of the second part.
    Type: Application
    Filed: March 20, 2026
    Publication date: October 1, 2026
    Inventors: Cheng Xue, Changfu Chen, Bin Sun, Jian Zhang, Pengfei Guo
  • Publication number: 20260291071
    Abstract: A patch radiating element includes a feeder pillar and a patch radiator positioned at a front end of the feeder pillar. The patch radiator includes a plurality of slots that are configured such that when the patch radiator is fed an RF signal via the feeder pillar, the current in a central area of the patch radiator is increased as compared to when the patch radiator does not include the plurality of slots.
    Type: Application
    Filed: March 18, 2026
    Publication date: September 24, 2026
    Inventors: Cheng Xue, Changfu Chen, Ligang Wu, Bin Sun, Jian Zhang, YueMin Li
  • Publication number: 20260291068
    Abstract: Radiating elements are provided that comprise a feed stalk, a first dipole radiator that comprises a first dipole arm and a second dipole arm, and a second dipole radiator that comprises a third dipole arm and a fourth dipole arm. The first dipole arm comprises a conductive loop and a conductive pad that is at least partially surrounded by the conductive loop and is only capacitively coupled to the conductive loop.
    Type: Application
    Filed: March 20, 2026
    Publication date: September 24, 2026
    Inventors: Bin Sun, Changfu Chen, Cheng Xue, Jian Zhang, Pengfei Guo
  • Patent number: 12744306
    Abstract: A base station antenna comprises first and second RF ports, first and second columns of radiating elements that each extend in a longitudinal direction, and a power coupling circuit. A first radiating element in the second column is coupled to the first RF port via the power coupling circuit, and the phase of the RF signal fed to the first radiating element in the second column is not advanced as compared to the phase of the RF signal fed to the first radiating element in the first column. A second radiating element in the first column is coupled to the second RF port via the power coupling circuit, and the phase of the RF signal fed to the second radiating element in the first column is not advanced as compared to the phase of the RF signal fed to the second radiating element in the second column.
    Type: Grant
    Filed: October 11, 2024
    Date of Patent: September 22, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Cheng Xue, Fangwen Wan, Changfu Chen, Pengfei Guo, Bin Sun, Jian Zhang
  • Patent number: 12744333
    Abstract: A radiating element for a base station antenna that is operable in a first frequency band. The radiating element comprises a radiator that includes a first radiating arm and a second radiating arm. At least one of the first radiating arm and the second radiating arm comprises: a first conductive region; a second conductive region spaced apart from the first conductive region; and a first inductive trace for electrically connecting the first conductive region and the second conductive region. Within the first conductive region, a first gap devoid of metal is provided, and the first inductive trace includes a first trace segment extending into the first gap. The first trace segment is disposed within the first gap at a distance from the first conductive region.
    Type: Grant
    Filed: August 27, 2024
    Date of Patent: September 22, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Bin Sun, Changfu Chen, Cheng Xue, Jian Zhang, Pengfei Guo
  • Publication number: 20260261052
    Abstract: A base station antenna, that may include: a reflector; an array of first radiating elements mounted forwardly of the reflector and configured to emit first electromagnetic radiation within a first frequency band; and a compensation structure mounted forwardly of at least a portion of the first radiating elements of the array of first radiating elements and configured to reflect at least some received first electromagnetic radiation backwards, wherein the compensation structure comprises a first compensation plate and a second compensation plate spaced apart from the first compensation plate, the first compensation plate being positioned to form a first Fabry-Pérot resonance cavity with the reflector for the first electromagnetic radiation, and the second compensation plate being positioned to form a second Fabry-Pérot resonance cavity with the reflector for the first electromagnetic radiation.
    Type: Application
    Filed: March 26, 2024
    Publication date: September 3, 2026
    Inventors: Cheng Xue, Changfu Chen, Pengfei Guo, Bin Sun, Jian Zhang, YueMin Li
  • Patent number: 12712258
    Abstract: A base station antenna assembly includes: first and second reflectors, the first and second reflectors having first and second sides, being electrically conductive and being disposed generally parallel to each other to form a gap therebetween; a stripline printed circuit board (PCB) positioned in the gap between the first and second reflectors; a first PCB mounted on the first side of the first reflector; a second PCB mounted on the first side of the second reflector so that the second PCB is positioned in the gap; and at least one first radiating element mounted to a first side of the first reflector, the at least one first radiating element having first and second stalks extending through the first PCB, through the first reflector, through the stripline PCB, through the second PCB, and to the second reflector.
    Type: Grant
    Filed: November 6, 2023
    Date of Patent: August 18, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Changfu Chen, YueMin Li, Haifei Qin, Junfeng Yu, Long Shan
  • Patent number: 12712279
    Abstract: The present invention relates to base station antenna assembly.
    Type: Grant
    Filed: June 26, 2024
    Date of Patent: August 18, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Changfu Chen, Bin Sun, Pengfei Guo, Jian Zhang, Cheng Xue
  • Patent number: 12712277
    Abstract: A box dipole radiating element includes first, second, third and fourth pairs of support stalks, and a box-shaped radiator attached to the first through fourth pairs of support stalks. The box-shaped radiator has first through fourth sides including respective first through fourth radiating arms that are configured to provide generally serpentine-shaped paths for radiation currents in first through fourth vertical planes, which are aligned with the radiating arms and intersect at corners of the box-shaped radiator.
    Type: Grant
    Filed: June 6, 2024
    Date of Patent: August 18, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Bin Sun, Jian Zhang, Changfu Chen, Cheng Xue, Pengfei Guo
  • Publication number: 20260237877
    Abstract: The present disclosure relates to a phase shifter assembly. The phase shifter assembly includes a phase shift circuit and a dielectric assembly having at least one dielectric element movable relative to the phase shift circuit. The at least one dielectric element includes a first dielectric component and a second dielectric component residing on opposite sides of the phase shift circuit. The first dielectric component and the second dielectric component each include a dielectric base and bosses and/or ribs protruding from the dielectric base towards one another. The at least one dielectric element is disposed at a set distance from the phase shift circuit to form a gap between the at least one dielectric element and the phase shift circuit.
    Type: Application
    Filed: March 30, 2026
    Publication date: August 13, 2026
    Inventors: Yuanpeng Ren, Changfu Chen, Shuguang Shao
  • Patent number: 12689115
    Abstract: A radiating element includes: a plurality of radiators, where each radiator includes a first side arm segment and a second side arm segment; a plurality of feeder rods, where each feeder rod is electrically connected to a respective one of a plurality of first side arm segments and a plurality of second side arm segments, where each group of feeder rods and their connected side arm segments include a first portion and a second portion electrically insulating from each other; and at least one common mode current suppressing component, where each common mode current suppressing component includes a first conductive portion and a second conductive portion adjacent to each other and electrically insulating, where the first conductive portion is electrically connected between a first portion of a group of feeder rods and their connected side arm segments and a second portion of an adjacent group of feeder rods and their connected side arm segments, and the second conductive portion is electrically connected betwee
    Type: Grant
    Filed: October 24, 2023
    Date of Patent: July 21, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Bin Sun, Changfu Chen, Jian Zhang, Cheng Xue, Pengfei Guo
  • Publication number: 20260188893
    Abstract: A base station antenna comprises a reflective plate, first and second columns of radiating elements, and at least one first decoupling metamaterial element positioned between the first and second columns. The first decoupling metamaterial element is mounted behind radiators of the first radiating elements and configured to at least partially reduce coupling between the radiating elements in the first and second columns. A major surface of the first decoupling metamaterial element is substantially parallel to a major surface of the reflective plate.
    Type: Application
    Filed: December 4, 2025
    Publication date: July 2, 2026
    Inventors: Pengfei Guo, Changfu Chen, Bin Sun, Cheng Xue, Jian Zhang
  • Patent number: 12627063
    Abstract: A reflector for a base station antenna comprises: a body; and at least one slot provided in the body, where the at least one slot is configured for forming at least one stub-type filtering structure in the body. The stub-type filtering structure is configured for at least partially inhibiting an induced current in the body within an operating frequency band of a radiating element mounted behind the reflector.
    Type: Grant
    Filed: October 20, 2023
    Date of Patent: May 12, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Qiang Liu, Xun Zhang, Changfu Chen, Nengbin Liu
  • Patent number: 12614848
    Abstract: The present disclosure relates to a radiating element, which includes: a dipole arm configured to emit first electromagnetic radiation within a pre-determined first operating frequency band; and a parasitic radiator, configured such that a first induced current induced on the parasitic radiator within a second operating frequency band at least partially cancels a second induced current induced on the dipole arm within the second operating frequency band. In addition, the present disclosure relates to a base station antenna, including: a first radiating element array, configured to emit first electromagnetic radiation within a pre-determined first operating frequency band, and at least a part of first radiating elements in the first radiating element array is constructed as radiating elements according to the present disclosure; a second radiating element array, configured to emit second electromagnetic radiation within a pre-determined second operating frequency band.
    Type: Grant
    Filed: July 20, 2023
    Date of Patent: April 28, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Ting Zhang, Fangwen Wan, Changfu Chen
  • Patent number: 12614825
    Abstract: The present disclosure relates to a phase shifter assembly comprising a phase shift circuit and a dielectric assembly having at least one dielectric element movable relative to the phase shift circuit for phase shifting, wherein the at least one dielectric element is disposed at a set distance from the phase shift circuit to form a gap between the at least one dielectric element and the phase shift circuit. In addition, the present disclosure also relates to a cavity phase shifter and a base station antenna.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: April 28, 2026
    Assignee: OUTDOOR WIRELESS NETWORKS LLC
    Inventors: Yuanpeng Ren, Changfu Chen, Shuguang Shao
  • Publication number: 20260074439
    Abstract: A radiating element for a base station antenna comprises a feed stalk printed circuit board and a dipole radiator printed circuit board mounted on the feed stalk printed circuit board. The feed stalk printed circuit board includes a first ground line that includes a first integrated parallel LC circuit, a second ground line that includes a second integrated parallel LC circuit, a first signal trace that extends through an opening in the dipole radiator printed circuit board, and a second signal trace.
    Type: Application
    Filed: August 28, 2025
    Publication date: March 12, 2026
    Inventors: Cheng Xue, Changfu Chen, Jian Zhang, Bin Sun, Pengfei Guo, YueMin Li
  • Patent number: 12573745
    Abstract: A base station antenna includes: a reflector; a first radiator located at the front side of the reflector; an ground conductor located at the rear side of the reflector, the ground conductor forming a chamber with an opening forward; and a first stripline conductor mounted in the chamber configured to feed the first radiator, the first stripline conductor extending in a plane substantially parallel to the reflector; where the reflector and the ground conductor are configured such that the opening is capped by the reflector, and the reflector is grounded via the ground conductor, so that the first stripline conductor and the ground conductor and the reflector are configured as a first strip transmission line.
    Type: Grant
    Filed: October 11, 2023
    Date of Patent: March 10, 2026
    Assignee: Outdoor Wireless Networks LLC
    Inventors: Changfu Chen, Haifei Qin, Yuemin Li, Junfeng Yu, Long SHan
  • Publication number: 20260039017
    Abstract: The present disclosure relates to a base station antenna. comprising: a reflector: a first frequency band radiating element located on the front side of the reflector; and a feed board located on the front side of the reflector. the feed board being configured to feed the first frequency band radiating element, in which. a resonant circuit in a grounding path of the first frequency band radiating clement is formed on the feed board, and the resonant circuit is configured to at least suppress current within a second frequency band different from the first frequency band (FIG. 2a).
    Type: Application
    Filed: September 1, 2023
    Publication date: February 5, 2026
    Inventors: Cheng XUE, Changfu CHEN, Jian ZHANG, Bin SUN, Xun ZHANG, Pengfei GUO
  • Publication number: 20260039010
    Abstract: A radiating element for a base station antenna comprises a feed stalk printed circuit board, a coupling printed circuit board mounted on a distal end of the feed stalk printed circuit board, the coupling printed circuit board including a plurality of metal pads, and a metal radiator that is capacitively coupled to the coupling printed circuit board and that forms at least part of a first radiator and a second radiator, the metal radiator comprising a monolithic metal plate that includes at least one opening.
    Type: Application
    Filed: July 16, 2025
    Publication date: February 5, 2026
    Inventors: Cheng Xue, Changfu Chen, Jian Zhang, Bin Sun, Pengfei Guo, YueMin Li