公开(公告)号：US20240145904A1

公开(公告)日：2024-05-02

申请号：US18484960

申请日：2023-10-11

Applicant: CommScope Technologies LLC

Inventor： Changfu Chen ,  Haifei Qin ,  Yuemin Li ,  Junfeng Yu ,  Long Shan

IPC: H01Q1/24 ,  H01Q1/48 ,  H01Q15/14 ,  H01Q21/26

CPC classification number: H01Q1/246 ,  H01Q1/48 ,  H01Q15/14 ,  H01Q21/26

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.

公开(公告)号：US20240030591A1

公开(公告)日：2024-01-25

申请号：US18025295

申请日：2021-09-01

Applicant: CommScope Technologies LLC

Inventor： Qiang Liu ,  Changfu Chen ,  Rongrong Zhang ,  Yuemin Li

IPC: H01Q1/24 ,  H01Q19/10 ,  H01Q21/06

CPC classification number: H01Q1/246 ,  H01Q19/108 ,  H01Q21/06

Abstract: A base station antenna that may include radiating elements having tilted dipoles. For example, a base station antenna may include a reflector and a plurality of radiating elements, each radiating element mounted on the front surface of the reflector and having a support stalk and at least one dipole mounted to the support stalk. The radiating elements include a plurality of first radiating elements configured to operate in a first operating frequency band, and arranged in one or more first columns extending along a first direction; and a plurality of second radiating elements, configured to operate in a second operating frequency band different from the first operating frequency band, and arranged in one or more second columns extending along the first direction. At least one dipole of a first of the second radiating elements in at least one of the second columns is tilted around the first direction.

公开(公告)号：US20230291103A1

公开(公告)日：2023-09-14

申请号：US18185332

申请日：2023-03-16

Applicant: CommScope Technologies LLC

Inventor： Changfu Chen ,  Runmiao Wu

IPC: H01Q5/392 ,  H01Q9/04 ,  H01Q5/335 ,  H01Q5/50 ,  H01Q1/52 ,  H01Q5/42

CPC classification number: H01Q5/392 ,  H01Q1/523 ,  H01Q5/335 ,  H01Q5/42 ,  H01Q5/50 ,  H01Q9/0407

Abstract: An antenna includes a reflector, a radiating element extending forwardly of the reflector, and a director positioned forwardly of the radiating element. The director includes a plurality of passive impedance elements that provide frequency-dependent reactances to currents induced therein responsive to electromagnetic radiation generated by the radiating element. The plurality of passive impedance elements include: (i) a primary capacitive element, (ii) a first series LC circuit having a first inductor therein electrically connected to a first portion of the primary capacitive element, and (iii) a second series LC circuit having a second inductor therein electrically connected to a second portion of the primary capacitive element.

公开(公告)号：US20220336964A1

公开(公告)日：2022-10-20

申请号：US17853975

申请日：2022-06-30

Applicant: CommScope Technologies LLC

Inventor： Bo Wu ,  Changfu Chen ,  YueMin Li ,  Mohammad Vatankhah Varnoosfaderani ,  Jian Zhang ,  Fan He ,  Peter J. Bisiules

IPC: H01Q21/06 ,  H01Q1/24 ,  H01Q21/00 ,  H01Q9/04 ,  H01Q13/10

Abstract: Radiating elements include a conductive patch having first and second slots that each extend along a first axis and third and fourth slots that each extend along a second axis that is perpendicular to the first axis, a feed network that includes first through fourth feed lines, each feed line crossing a respective one of the first through fourth slots, and a conductive ring that at least partially surrounds the periphery of the conductive patch and that encloses each of the first through fourth slots.

公开(公告)号：US11374331B1

公开(公告)日：2022-06-28

申请号：US17621599

申请日：2020-06-29

Applicant: CommScope Technologies LLC

Inventor： Changfu Chen

IPC: H01Q21/06 ,  H01Q1/24 ,  H01Q19/185

Abstract: A base station antenna comprises two arrays of radiating elements each configured to emit electromagnetic radiation; two backplanes each configured to reflect respective electromagnetic radiation outwardly, wherein the two backplanes are positioned with a mechanical tilt relative to each other such that the respective electromagnetic radiation are directed in different directions in the azimuth plane; and two plate assemblies each configured to reflect a first portion of received electromagnetic radiation inwardly while allowing a second portion to pass outwardly through the respective plate assembly, where the two plate assemblies are positioned to form two Fabry-Perot cavities with the two backplanes, respectively.

公开(公告)号：US20210320413A1

公开(公告)日：2021-10-14

申请号：US17222023

申请日：2021-04-05

Applicant: CommScope Technologies LLC

Inventor： Runmiao Wu ,  Changfu Chen

IPC: H01Q5/45 ,  H01Q1/24 ,  H01Q15/14 ,  H01Q19/10 ,  H01Q5/385

Abstract: A multi-band antenna includes a reflector, and a plurality of first radiating elements on the reflector. The plurality of first radiating elements are configured to radiate a first antenna beam(s) in a first frequency band responsive to at least one feed signal. A passive radiation-filtering element is provided, which extends proximate the first antenna beam(s). The passive radiation-filtering element includes at least one of a low-pass LC circuit, a band-pass LC circuit, and a high-pass LC circuit therein, which is configured to provide a lower frequency-dependent impedance to radiation within the first frequency band relative to radiation at frequencies outside the first frequency band. The passive radiation-filtering element may be configured as a multi-segment fence having capacitive and inductive elements therein, which are electrically coupled in series.

公开(公告)号：US20210296760A1

公开(公告)日：2021-09-23

申请号：US17199582

申请日：2021-03-12

Applicant: CommScope Technologies LLC

Inventor： Changfu Chen ,  Jian Zhang

IPC: H01Q1/24 ,  H01Q21/26 ,  H01Q19/10

Abstract: The present invention relates to a base station antenna. The base station antenna comprises: a reflector that is configured to provide a ground plane; a first radiating element array including at least one first cross-polarized radiating element that is arranged on the reflector; and a first parasitic element array including first through third parasitic element pairs, wherein each of the first through third parasitic element pairs includes a pair of parasitic elements that are arranged substantially symmetrically on both sides of the first longitudinal axis, and distances from the first through third parasitic element pairs respectively to the first longitudinal axis increase sequentially, wherein projections of any two of the first parasitic element pair, the second parasitic element pair, the third parasitic element pair, and the at least one first cross-polarized radiating element on the first longitudinal axis at least partly overlap.

公开(公告)号：US20210175617A1

公开(公告)日：2021-06-10

申请号：US17102702

申请日：2020-11-24

Applicant: CommScope Technologies LLC

Inventor： Changfu Chen

IPC: H01Q1/42 ,  H01Q1/24

Abstract: Radomes for a base station antenna include a first dielectric layer having a first dielectric constant and a first thickness, a second dielectric layer having a second dielectric constant and a second thickness, the second dielectric layer being positioned on an outer side of the first dielectric layer; and a third dielectric layer having a third dielectric constant and a third thickness, the third dielectric layer being positioned on an outer side of the second dielectric layer. Each of the first and third dielectric constants is greater than the second dielectric constant.

公开(公告)号：US20240136725A1

公开(公告)日：2024-04-25

申请号：US18491045

申请日：2023-10-19

Applicant: CommScope Technologies LLC

Inventor： Qiang Liu ,  Xun Zhang ,  Changfu Chen ,  Nengbin Liu

IPC: H01Q13/10 ,  H01Q15/14

CPC classification number: H01Q13/10 ,  H01Q15/14

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.

公开(公告)号：US20240039159A1

公开(公告)日：2024-02-01

申请号：US18355519

申请日：2023-07-20

Applicant: CommScope Technologies LLC

Inventor： Ting Zhang ,  Fangwen Wan ,  Changfu Chen

IPC: H01Q5/49 ,  H01Q5/392

CPC classification number: H01Q5/49 ,  H01Q5/392

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.