EP4266489A1 - Directeur à double couche et réseau d'antennes à station de base multifréquence - Google Patents

Directeur à double couche et réseau d'antennes à station de base multifréquence Download PDF

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Publication number
EP4266489A1
EP4266489A1 EP22893991.4A EP22893991A EP4266489A1 EP 4266489 A1 EP4266489 A1 EP 4266489A1 EP 22893991 A EP22893991 A EP 22893991A EP 4266489 A1 EP4266489 A1 EP 4266489A1
Authority
EP
European Patent Office
Prior art keywords
director
frequency
double
layered
array
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP22893991.4A
Other languages
German (de)
English (en)
Other versions
EP4266489A4 (fr
Inventor
Shao ZHANG
Biqun WU
Zehai WU
Peng Zhang
Benbo LUO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Broadradio Communication Technology Co Ltd
Original Assignee
Guangdong Broadradio Communication Technology Co Ltd
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 Guangdong Broadradio Communication Technology Co Ltd filed Critical Guangdong Broadradio Communication Technology Co Ltd
Publication of EP4266489A1 publication Critical patent/EP4266489A1/fr
Publication of EP4266489A4 publication Critical patent/EP4266489A4/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/42—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more imbricated arrays
    • 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
    • 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
    • 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
    • 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
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/108—Combination of a dipole with a plane reflecting surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

Definitions

  • the present application relates to the technical field of base station antennas, in particular to a double-layered director and a multi-frequency base station antenna array using the same.
  • the multi-port broadband base station antenna can form more antenna arrays without increasing the antenna width, which will reduce the distance between the antenna arrays and increase the mutual influence between the antenna arrays. In this case, it is required to have a consistent and stable radiation pattern within the operating frequency band.
  • a good choice is to add a director above the radiating unit. Use of the parasitic effect between the director and the radiating unit can make the antenna radiation wave radiate in the normal radiation direction, thereby realizing the reduction of the antenna width by increasing the height of the array.
  • the number of directors is increased or the size there of is large, resonance will occur during operation of the antenna, hence affecting the performance of the antenna itself.
  • the object of the present invention is to at least solve one of the drawbacks in the prior art proposed in the background technology, and to realize the object of the present invention, the following technical solution is proposed:
  • the present invention proposes a double-layered director.
  • the double-layered director includes a first director and a second director installed above the first director, and the second director includes a dielectric substrate and a split copper foil installed on the dielectric substrate.
  • the split copper foil includes a plurality of small copper foils, and the plurality of small copper foils are circumferentially arranged at intervals around a center of the second director.
  • the number of the small copper foils is at least 4.
  • the number of the small copper foils is at least 12.
  • the length of the small copper foils is less than 0.25 ⁇ , where ⁇ is the wavelength of the center frequency of the antenna.
  • the small copper foils are of a sector or annular sectoral shape.
  • the first director is made of a whole piece of metal sheet.
  • the shape of the metal sheet is circular or polygonal.
  • a second aspect of the present invention proposes a multi-frequency base station antenna array. It includes a reflector and a high-frequency array and a low-frequency array arranged on the reflector, the high-frequency array includes several high-frequency radiation units, and the low-frequency array includes several low-frequency radiation units, each high-frequency radiation unit is distributed below a corresponding low-frequency radiation unit, and a double-layered director according to the first aspect is also arranged directly above a corresponding high-frequency radiation unit.
  • the number of the high-frequency array and the low-frequency array is two rows.
  • the present invention brings the following good effects.
  • the present invention arranges a split copper foil on the dielectric substrate. This not only weakens the influence of the resonant current of the director on the high-frequency radiation unit itself, but also simplifies the boundary of the radiation unit, and reduces the coupling and mutual interference between the high-frequency and low-frequency radiation units, and avoids the superposition of scattered waves which otherwise will cause the pattern distortion. This in turn enables the multi-frequency base station antenna to have consistent and stable horizontal half-power beamwidth and gain within the operating frequency band.
  • a first aspect of the embodiment of the present invention proposes a double-layered director, which is mainly applied to a multi-frequency base station antenna array.
  • the double-layered director includes a first director 1 and a second director 2, and the second director 2 is installed directly above the first director 1.
  • the first director 1 and the second director 2 may be connected and fixed through an insulating support post.
  • the first director 1 is constructed of a whole piece of circular metal sheet, and its diameter is between 0.15 ⁇ -0.5 ⁇ , where ⁇ is the wavelength of the center frequency of the antenna.
  • the metal sheet can also be a square or polygonal metal sheet. It is not limited to a circular shape, and those skilled in the art can set it according to actual need.
  • the second director 2 is a split director, which is made of a PCB.
  • the second director 2 includes a dielectric substrate 22 and a split copper foil 21 installed on the dielectric substrate 22.
  • the dielectric substrate 22 plays a role of supporting the split copper foil 21.
  • the split copper foil 21 includes a plurality of small copper foils 211, each of which is a lobe, and the plurality of small copper foils 211 are arranged circumferentially around a center of the second director 2 at intervals.
  • the number of the small copper foils 211 is at least 4, for example, it may be 4, 5, 6 and so on.
  • FIG. 2 it is a schematic top view of four small copper foils in a double-layered director of the present invention.
  • the shape of the small copper foil 211 may be a sectoral shape or annular sector.
  • the split copper foil 21 is formed by 12 sectoral small copper foils 211 circumferentially arranged around the center of the second director 2 at intervals.
  • the small copper foil 211 may also be other polygons, such as an annular sector.
  • the split copper foil 21 is constructed of 12 small copper foils 211 of sectoral shape arranged circumferentially around the center of the second director 2 at intervals.
  • the split copper foil 21 may also be formed by circumferentially arranging 4 small copper foils 211 of a sectoral shape around the center of the second director 2 at intervals.
  • the radius of each small sectoral copper foil 211 is smaller than 0.25 ⁇ , where ⁇ is the wavelength of the center frequency of the antenna.
  • a second aspect of this embodiment proposes a multi-frequency base station antenna array.
  • the multi-frequency base station antenna array includes a reflector and a high-frequency array and a low-frequency array arranged on the reflector.
  • the high-frequency array includes several high-frequency radiation units 3, and the low-frequency array includes several low-frequency radiation units 4.
  • two rows of the high-frequency arrays and low-frequency arrays are provided, and a corresponding high-frequency radiation unit 3 is distributed below a corresponding low-frequency radiation unit 4.
  • the multi-frequency base station antenna array also includes a double-layered director described in the above embodiments, and the double-layered director is arranged directly above a corresponding high-frequency radiation unit 3.
  • FIG. 5 shows comparison width change curves of the horizontal plane half-power beamwidth of the array antenna that adds two layers of prior art metal directors of the same size and the double-layered director of the present invention. It can be seen from FIG. 5 that after adding the split director of the present invention, the half-power beamwidth in the working frequency band of the antenna is more convergent, and the more the number of lobes, the more convergent the half-power beamwidth in the working frequency band.
  • the present invention produces multiple effects simultaneously by disposing the split copper foils 211 on the dielectric substrate 22. This not only weakens the influence of the resonant current of the director on the high-frequency radiation unit 3 itself, but also simplifies the boundary of the radiation unit, and reduces the coupling and mutual interference between the high-frequency and low-frequency radiation units, and avoids the superposition of scattered waves which otherwise will cause the pattern distortion. This in turn enables the multi-frequency base station antenna to have consistent and stable horizontal half-power lobe width and gain within the operating frequency band.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)
EP22893991.4A 2021-12-09 2022-04-14 Directeur à double couche et réseau d'antennes à station de base multifréquence Pending EP4266489A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111502288.9A CN114171889B (zh) 2021-12-09 2021-12-09 一种双层引向器及多频基站天线阵列
PCT/CN2022/086852 WO2023103244A1 (fr) 2021-12-09 2022-04-14 Directeur à double couche et réseau d'antennes à station de base multifréquence

Publications (2)

Publication Number Publication Date
EP4266489A1 true EP4266489A1 (fr) 2023-10-25
EP4266489A4 EP4266489A4 (fr) 2024-01-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22893991.4A Pending EP4266489A4 (fr) 2021-12-09 2022-04-14 Directeur à double couche et réseau d'antennes à station de base multifréquence

Country Status (3)

Country Link
EP (1) EP4266489A4 (fr)
CN (1) CN114171889B (fr)
WO (1) WO2023103244A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114171889B (zh) * 2021-12-09 2022-07-05 广东博纬通信科技有限公司 一种双层引向器及多频基站天线阵列

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ES2153323B1 (es) * 1999-06-07 2001-07-16 Univ Madrid Politecnica Reflectores planos en tecnologia impresa multicapa y su procedimiento de diseño.
US7358922B2 (en) * 2002-12-13 2008-04-15 Commscope, Inc. Of North Carolina Directed dipole antenna
US20060038738A1 (en) * 2004-08-18 2006-02-23 Video54 Technologies, Inc. Wireless system having multiple antennas and multiple radios
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CN108123206A (zh) * 2017-12-20 2018-06-05 深圳市华信天线技术有限公司 一种天线安装座及天线
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CN114171889B (zh) * 2021-12-09 2022-07-05 广东博纬通信科技有限公司 一种双层引向器及多频基站天线阵列

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Publication number Publication date
CN114171889A (zh) 2022-03-11
CN114171889B (zh) 2022-07-05
EP4266489A4 (fr) 2024-01-10
WO2023103244A1 (fr) 2023-06-15

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