WO2024066393A1 - Élément rayonnant à filtrage basse fréquence et antenne de station de base - Google Patents

Élément rayonnant à filtrage basse fréquence et antenne de station de base Download PDF

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Publication number
WO2024066393A1
WO2024066393A1 PCT/CN2023/094762 CN2023094762W WO2024066393A1 WO 2024066393 A1 WO2024066393 A1 WO 2024066393A1 CN 2023094762 W CN2023094762 W CN 2023094762W WO 2024066393 A1 WO2024066393 A1 WO 2024066393A1
Authority
WO
WIPO (PCT)
Prior art keywords
low
frequency
radiation unit
mounting surface
filtering
Prior art date
Application number
PCT/CN2023/094762
Other languages
English (en)
Chinese (zh)
Inventor
刘正贵
程伟
吴卫华
Original Assignee
中信科移动通信技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中信科移动通信技术股份有限公司 filed Critical 中信科移动通信技术股份有限公司
Priority to EP23798323.4A priority Critical patent/EP4372911A1/fr
Publication of WO2024066393A1 publication Critical patent/WO2024066393A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system

Definitions

  • the present disclosure relates to the technical field of communication equipment, and in particular to a low-frequency filtering radiation unit and a base station antenna.
  • the radiating unit is the main part of the antenna, which can transmit and receive electromagnetic waves in a direction, thereby realizing wireless communication.
  • the dual-polarized radiating unit can realize polarization diversity and can work in the duplex mode at the same time, greatly reducing the number of antennas and the space occupied.
  • the existing high- and low-frequency fusion solutions include low-frequency bowl-shaped nesting and cross-cross vibrators.
  • the low-frequency bowl-shaped nesting solution has excellent performance but the array method is fixed, and the cross-cross vibrator solution has flexible array formation but poor indicators. Therefore, designing a low-frequency radiating unit with simple structure, excellent performance and little impact on high frequency is an urgent problem that technicians in this field need to solve.
  • a low-frequency filtering radiation unit comprising:
  • the substrate comprising a first mounting surface and a second mounting surface which are arranged opposite to each other;
  • the low-frequency radiation unit includes four pairs of dipoles symmetrically distributed on the substrate.
  • the dipoles are orthogonally distributed in polarization to form two groups of ⁇ 45° polarized radiation units.
  • Each pair of dipoles includes two radiation arms respectively arranged on the first mounting surface and the second mounting surface, and the two radiation arms are arranged in a mirror image.
  • a feeding unit is also provided on the first mounting surface and the second mounting surface respectively, and the feeding unit includes four baluns distributed orthogonally, each balun is connected to a corresponding radiation arm, and two baluns on the same extension line in each feeding unit are cascaded at the center position of the substrate.
  • each balun is provided with at least one filtering branch, and the filtering branch is used to reduce the influence of the low-frequency radiation unit on the high-frequency oscillator.
  • each filter branch forms a plurality of filter branch groups, each filter branch group is spaced in sequence along the length direction of the corresponding balun, and the two filter branches of each filter branch group are symmetrically arranged on both sides of the corresponding balun spaced in the length direction.
  • each filtering branch is in a straight line, a curve or an L shape.
  • each radiation arm includes a plurality of filtering components and an inductor branch connecting the filtering components.
  • the low-frequency filtering radiation unit also includes a supporting seat, the supporting seat includes a base and two feeding substrates arranged on the base, the two feeding substrates are orthogonally distributed and correspondingly connected to the feeding unit on the second mounting surface.
  • a feeding circuit is provided inside each balun, and each feeding circuit is used to feed the corresponding radiation arm through a coaxial line and/or a feeder pad.
  • the present disclosure also provides a base station antenna, comprising:
  • a high-frequency radiation unit includes a plurality of high-frequency vibrators arranged on a base;
  • the low-frequency filtering radiation unit is arranged between the high-frequency oscillators at intervals, and the low-frequency filtering radiation unit is any of the low-frequency filtering radiation units described above.
  • the spacing between each high-frequency oscillator is 0.7-0.9 ⁇ .
  • FIG1 is a schematic diagram of a three-dimensional structure of a low-frequency filtering radiation unit according to an embodiment of the present disclosure
  • FIG2 is a schematic diagram of the front structure of the substrate in FIG1 ;
  • FIG3 is a schematic diagram of the back structure of the substrate in FIG1 ;
  • FIG4 is a schematic diagram of the three-dimensional structure of a base station antenna according to an embodiment of the present disclosure.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium.
  • a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.
  • a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
  • the low-frequency filtering radiation unit 100 and the base station antenna 10 of the embodiment of the present disclosure are described below in conjunction with FIG. 1 to FIG. 4 .
  • the low-frequency radiating unit 100 including: a substrate 110, the substrate 110 includes a first mounting surface 111 and a second mounting surface 112 which are arranged opposite to each other; and a low-frequency radiating unit 120, including four pairs of dipoles 121 centrally symmetrically distributed on the substrate 110, the four pairs of dipoles 121 are orthogonally distributed in polarization to form two groups of radiating units with ⁇ 45° polarization, each pair of dipoles 121 includes two radiating arms 122 which are respectively arranged on the first mounting surface 111 and the second mounting surface 112, and the two radiating arms 122 are arranged in a mirror image.
  • the low-frequency filter radiation unit 100 is a unit constituting the basic structure of the antenna, which can effectively radiate or receive radio waves.
  • the preparation material of the low-frequency filter radiation unit 100 can be set according to actual needs, such as being made of PCB (Printed Circuit Board) or metal die-casting plate, and accordingly, the substrate 110 is PCB or metal die-casting plate.
  • the dielectric thickness and dielectric constant of the substrate 110 and other related parameters can be set according to actual needs, such as setting the dielectric thickness of the substrate 110 between 0.2mm and 3mm, and the dielectric constant between 2 and 10.
  • the low-frequency filtering radiation unit 100 provided by the present invention has two groups of radiation units with ⁇ 45° polarization.
  • the radiation unit composed of two dipoles 121 has not only better unit radiation performance but also more stable array performance compared to the ordinary single dipole 121 cross antenna.
  • the low-frequency filtering radiation unit 100 provided by the present invention has high integration, small installation area, more flexible array, and can significantly improve the applicability of the radiation unit.
  • a feeding unit 130 is also provided on the first mounting surface 111 and the second mounting surface 112, respectively.
  • the feeding unit 130 includes four baluns 131 distributed orthogonally, each balun 131 is connected to a corresponding radiation arm 122, and two baluns 131 on the same extension line in each feeding unit 130 are cascaded at the center position of the substrate 110, so that the two dipoles 121 on the same extension line form a radiation unit with ⁇ 45° polarization.
  • at least one filter branch 132 is provided on each balun 131, and the filter branch 132 is used to reduce the influence of the low-frequency radiation unit 120 on the high-frequency oscillator.
  • the number and shape of the filter branches 132 can be set according to actual needs, such as setting one or more filter branches 132 of different shapes, different lengths and different widths, and the filter branches 132 can be linear, curved or L-shaped, which is not specifically limited in this embodiment.
  • the filter branches 132 form a plurality of filter branch groups, each filter branch group being spaced in sequence along the length direction of the corresponding balun 131, and the two filter branches 132 of each filter branch group being symmetrically arranged on both sides of the corresponding balun 131 spaced in the length direction, and the filter branches 132 are L-shaped.
  • the decoupling between the vibrators of different frequency bands is mainly achieved by adding isolation strips, barriers, devices or PCB boards and other filtering means between the vibrators of different frequency bands in the form of circuits in the feed network part, so as to reduce the coupling between the vibrators of different frequency bands as much as possible.
  • this method not only requires adding a large number of filtering devices between the vibrators, which occupies a large amount of space, but also results in a small space occupied by each vibrator on the antenna, affecting the overall layout of each vibrator on the antenna, resulting in the difficulty of the antenna to meet the number of frequency bands, or the effect of eliminating interference is difficult to meet the expected requirements.
  • each radiating arm 122 includes a plurality of filtering elements 123 and an inductor branch 124 connecting each filtering element 123.
  • the radiating arm 122 itself has a certain filtering effect on the interference of other frequency bands, avoiding changing the arrangement of the radiating arm 122 on the antenna and occupying additional space of the antenna.
  • the number and shape of the filter elements 123 of each radiating arm 122 can be The configuration is performed according to actual needs, such as configuring one or more filter elements 123 of different shapes, lengths, and widths, and the filter elements 123 are connected by inductor branches 124, which is not specifically limited in this embodiment.
  • the radiation arm 122 is configured as a rectangle
  • the filter element 123 is correspondingly configured as a rectangle
  • the inductor branch 124 is configured as a long strip for connecting the filter elements 123.
  • the low-frequency filtering radiation unit 100 further includes a support base 140, the support base 140 includes a base 142 and two feeding substrates 141 arranged on the base 142, the two feeding substrates 141 are orthogonally distributed and correspondingly connected to the feeding unit 130 on the second mounting surface 112, and are used to feed the balun 131, and the feeding substrate 141 is a PCB or a metal die-casting plate, which is not limited in the present disclosure.
  • a feeding circuit is provided inside the balun 131, and the feeding circuit is used to feed the corresponding radiation arm 122 through a coaxial line and/or a feeder pad.
  • the present disclosure further provides a base station antenna 10, comprising: a base 200; a high-frequency radiation unit 300, comprising a plurality of high-frequency oscillators 310 disposed on the base 200; and a low-frequency filter radiation unit 100, which is disposed between the high-frequency oscillators 310 at intervals.
  • the spacing between the high-frequency oscillators 310 is 0.7 to 0.9 ⁇ . Since the main improvement of the present disclosure lies in the low-frequency filter radiation unit 100, the detailed structure of the base station antenna 10 will not be described in detail.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

La présente divulgation concerne un élément rayonnant à filtrage basse fréquence et une antenne de station de base. L'élément rayonnant à filtrage basse fréquence comprend : un substrat, le substrat comprenant une première surface de montage et une seconde surface de montage disposées de manière opposée ; et un élément rayonnant basse fréquence, comprenant quatre paires de dipôles répartis de manière centrosymétrique sur le substrat ; les quatre paires de dipôles ont une distribution de polarisation orthogonale de manière à former deux groupes d'éléments rayonnants polarisés à +/-45 degrés ; chaque paire de dipôles comprend deux bras rayonnants respectivement disposés sur la première surface de montage et la seconde surface de montage, et les deux bras rayonnants sont disposés de manière à former une image en miroir.
PCT/CN2023/094762 2022-09-30 2023-05-17 Élément rayonnant à filtrage basse fréquence et antenne de station de base WO2024066393A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23798323.4A EP4372911A1 (fr) 2022-09-30 2023-05-17 Élément rayonnant à filtrage basse fréquence et antenne de station de base

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211216825.8A CN115377657A (zh) 2022-09-30 2022-09-30 低频滤波辐射单元及基站天线
CN202211216825.8 2022-09-30

Publications (1)

Publication Number Publication Date
WO2024066393A1 true WO2024066393A1 (fr) 2024-04-04

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Family Applications (1)

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PCT/CN2023/094762 WO2024066393A1 (fr) 2022-09-30 2023-05-17 Élément rayonnant à filtrage basse fréquence et antenne de station de base

Country Status (3)

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EP (1) EP4372911A1 (fr)
CN (1) CN115377657A (fr)
WO (1) WO2024066393A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115377657A (zh) * 2022-09-30 2022-11-22 中信科移动通信技术股份有限公司 低频滤波辐射单元及基站天线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112821044A (zh) * 2020-12-31 2021-05-18 京信通信技术(广州)有限公司 辐射单元、天线及基站
CN112864604A (zh) * 2021-03-15 2021-05-28 罗森伯格技术有限公司 用于天线的辐射元件和包括该辐射元件的天线
CN214227139U (zh) * 2021-03-15 2021-09-17 罗森伯格技术有限公司 用于天线的辐射元件和包括该辐射元件的天线
WO2022012023A1 (fr) * 2020-07-17 2022-01-20 摩比天线技术（深圳）有限公司 Unité de rayonnement basse fréquence et antenne de station de base
CN115377657A (zh) * 2022-09-30 2022-11-22 中信科移动通信技术股份有限公司 低频滤波辐射单元及基站天线

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022012023A1 (fr) * 2020-07-17 2022-01-20 摩比天线技术（深圳）有限公司 Unité de rayonnement basse fréquence et antenne de station de base
CN112821044A (zh) * 2020-12-31 2021-05-18 京信通信技术(广州)有限公司 辐射单元、天线及基站
CN112864604A (zh) * 2021-03-15 2021-05-28 罗森伯格技术有限公司 用于天线的辐射元件和包括该辐射元件的天线
CN214227139U (zh) * 2021-03-15 2021-09-17 罗森伯格技术有限公司 用于天线的辐射元件和包括该辐射元件的天线
US20220294116A1 (en) * 2021-03-15 2022-09-15 Rosenberger Technologies Co., Ltd. Radiation element for antenna and antenna including the radiation element
CN115377657A (zh) * 2022-09-30 2022-11-22 中信科移动通信技术股份有限公司 低频滤波辐射单元及基站天线

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EP4372911A1 (fr) 2024-05-22
CN115377657A (zh) 2022-11-22

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