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WO2018184354A1 - Antenne à large bande à double polarisation à isolation élevée - Google Patents

Antenne à large bande à double polarisation à isolation élevée Download PDF

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Publication number
WO2018184354A1
WO2018184354A1 PCT/CN2017/101984 CN2017101984W WO2018184354A1 WO 2018184354 A1 WO2018184354 A1 WO 2018184354A1 CN 2017101984 W CN2017101984 W CN 2017101984W WO 2018184354 A1 WO2018184354 A1 WO 2018184354A1
Authority
WO
WIPO (PCT)
Prior art keywords
rectangular
hollow
shaped
axe
dielectric plate
Prior art date
Application number
PCT/CN2017/101984
Other languages
English (en)
Chinese (zh)
Inventor
彭彪
邓力
李书芳
张贯京
葛新科
高伟明
张红治
Original Assignee
深圳市景程信息科技有限公司
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 深圳市景程信息科技有限公司 filed Critical 深圳市景程信息科技有限公司
Publication of WO2018184354A1 publication Critical patent/WO2018184354A1/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
    • H01Q1/52—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
    • H01Q1/36—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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot antennas

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a high-isolation dual-polarized broadband antenna.
  • a primary object of the present invention is to provide a high-isolation dual-polarized wideband antenna, which aims to solve the technical problem that the existing dual-polarized antenna has a large size and poor isolation.
  • a high isolation dual-polarization broadband antenna includes a dielectric plate, a hollow metal sheet, an L-shaped metal microstrip line, a first SMA head, an axe monopole structure, and a second SMA head
  • the hollow metal sheet is attached to the upper surface of the dielectric plate, and the L-shaped metal microstrip line and the axe monopole structure are attached to the lower surface of the dielectric plate; Etching a stepped hollow gap, wherein the stepped hollow gap is formed by a first rectangular hollow, a second rectangular hollow, a third rectangular hollow, a fourth rectangular hollow, and a fifth rectangular hollow;
  • the L-shaped metal microstrip a transverse portion of the line is parallel to a long side of a lower surface of the dielectric plate, a vertical portion of the L-shaped metal microstrip line being perpendicular to a long side of a lower surface of the dielectric plate;
  • the axe monopole structure comprising a strip-shaped vertical portion and an axe-shaped transverse portion
  • the first rectangular hollow, the second rectangular hollow, the third rectangular hollow, the fourth rectangular hollow, and the wide side of the fifth rectangular hollow are parallel to the central axis of the broad side of the upper surface of the dielectric plate;
  • the first rectangular cutout, the second rectangular cutout, the third rectangular cutout, the fourth rectangular cutout, and the fifth rectangular cutout are symmetric about the central axis of the wide side.
  • the dielectric plate is a dielectric substrate of FR4, and the dielectric plate has a thickness of 0.8 mm and a dielectric constant of 4.4.
  • the length of the dielectric plate and the hollow metal sheet is 74 mm, the width of the dielectric plate and the hollow metal sheet is 106 mm; the length of the first rectangular hollow is 52 mm, and the first rectangular hollow a width of 44 mm; a length of the second rectangular hollow is 32 mm, a width of the second rectangular hollow is 6 mm; a length of the third rectangular hollow is 6.7 mm, and a width of the third rectangular hollow is 10.5 mm;
  • the fourth rectangular hollow has a length of 2.6 mm, the fourth rectangular hollow has a width of 17.7 mm, the fifth rectangular hollow has a length of 9.6 mm, and the fifth rectangular hollow has a width of 1.5 mm.
  • the distance between the lower longitudinal edge of the stepped hollow gap and the lower longitudinal edge of the upper surface of the dielectric plate is 6.3 mm.
  • the width of the L-shaped metal microstrip line is 1.32 mm
  • the length of the lateral portion of the L-shaped metal microstrip line is 27.6 mm
  • the length of the vertical portion of the L-shaped metal microstrip line is 11.32mm.
  • the distance between the vertical portion of the L-shaped metal microstrip line and the left wide side of the lower surface of the dielectric plate is 20.4 mm.
  • the length of the first rectangular metal piece of the axe monopole structure is 2.5 mm, the width of the first rectangular metal piece is 36 mm; the second rectangle of the axe monopole structure The length of the metal piece is 1 mm, the width of the second rectangular metal piece is 11 mm; the length of the upper base of the equilateral trapezoidal metal piece of the axe-shaped monopole structure is 2.5 mm, and the equilateral trapezoidal metal piece The length of the lower base is 16mm, the equilateral The height of the trapezoidal metal piece is 6.75 mm.
  • a vertical distance between a center point of the equilateral trapezoidal metal piece of the axe-shaped monopole structure and a lower bottom side of the first rectangular metal piece of the axe-shaped monopole structure is 9.8 mm.
  • the high-isolation dual-polarized broadband antenna of the present invention realizes the dual-polarized antenna by effectively adopting the orthogonal electric field mode of the stepped hollow-spaced slit resonance by setting the stepped hollow-spaced slit resonance, and can sufficiently reduce the antenna design size, and A high isolation is formed between the two feed ports so that the frequencies of the two feed ports can be independently tuned.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a high isolation dual-polarization broadband antenna according to the present invention
  • FIG. 2 is a schematic structural view of a preferred embodiment of a hollow metal sheet of a high isolation dual-polarization broadband antenna of the present invention
  • FIG. 3 is a schematic structural view of a preferred embodiment of an L-shaped metal microstrip line and an axe monopole structure of the high isolation dual-polarization broadband antenna of the present invention
  • FIG. 4 is a schematic diagram showing simulation results of reflection coefficients of a high isolation dual-polarization broadband antenna of the present invention
  • FIG. 5 is a schematic diagram showing a simulation result of a reflection coefficient of a high isolation dual-polarization broadband antenna L0 parameter of the present invention
  • FIG. 6 is a schematic diagram showing a simulation result of a reflection coefficient of a dl parameter of a high isolation dual-polarization broadband antenna according to the present invention
  • 7 is a schematic diagram showing a simulation result of a reflection coefficient of a high isolation dual-polarization broadband antenna W4 parameter of the present invention
  • FIG. 8 is a schematic diagram showing a simulation result of a reflection coefficient of a high isolation dual-polarization broadband antenna LP3 parameter of the present invention
  • 9 is a schematic diagram showing simulation results of reflection coefficient of the high isolation dual-polarization broadband antenna S1 parameter of the present invention.
  • FIG. 1 is a plan view showing a preferred embodiment of a preferred embodiment of the high isolation dual-polarization wideband antenna of the present invention.
  • the high-isolation dual-polarization broadband antenna 1 includes a dielectric plate 10, a hollow metal sheet 20, an L-shaped metal microstrip line 30, and a first SMA (Sub-Miniature-A) head 40, an axe-shaped single The pole structure 50 and the second SMA (Sub-Miniature-A) head 60.
  • the high-isolation dual-polarized broadband antenna 1 has a rectangular parallelepiped structure (only a schematic plan view is shown in FIG. 1), and the hollow metal sheet 20, the L-shaped metal microstrip line 30, and the axe monopole structure 50 are both Copper.
  • the dielectric plate 10 is a dielectric substrate of FR4 having a thickness of 0.8 mm and a dielectric constant of preferably 4.4.
  • the first SMA head 40 and the second SMA head 60 are coaxial connectors.
  • the hollow metal sheet 20 is attached to the upper surface of the dielectric plate 10, and the L-shaped metal microstrip line 30 and the axe monopole structure 50 are attached to the lower surface of the dielectric plate 10.
  • the stepped hollow sheet 21 is etched with a stepped hollow slit 21, and the stepped hollow slit 21 is composed of a first rectangular hollow 211, a second rectangular hollow 212, a third rectangular hollow 213, a fourth rectangular hollow 214, and a fifth rectangular shape.
  • the hollow 215 is connected in sequence; the lateral portion 31 of the L-shaped metal microstrip line is parallel to the long side of the lower surface of the dielectric plate 10, and the vertical portion 32 of the L-shaped metal microstrip line and the dielectric plate 10
  • the long side of the lower surface is vertical;
  • the axe monopole structure 50 includes a strip-shaped vertical portion 51 and an axe-shaped cross portion 52, and the strip-shaped vertical portion 51 of the axe-shaped monopole structure includes a first rectangular shape to be connected a metal piece 511 and a second rectangular metal piece 512, the strip-shaped vertical portion 51 of the axe-shaped monopole structure is perpendicular to a long side of a lower surface of the dielectric plate 10;
  • the transverse portion 5 2 includes a strip-shaped vertical portion symmetrically disposed on the axe monopole structure An equilateral trapezoidal metal piece 521 on both sides of the 51, the axe-shaped monopole
  • the vertical portion 32 of the L-shaped metal microstrip line extends to the bottom long side of the lower surface of the dielectric plate 10, and the first SMA head 40 is disposed at the L
  • a first feeding port S is formed on the dielectric plate 10 at a position where the vertical portion 32 of the metal microstrip line intersects the long side of the bottom surface of the lower surface of the dielectric plate 10 11;
  • a vertical portion 51 of the axe monopole structure extends to a top long side of a lower surface of the dielectric plate 10
  • the second SMA head 60 is disposed at a vertical portion 51 of the axe monopole structure
  • a second feed port S22 is formed on the dielectric plate 10 at a position intersecting the top long side of the lower surface of the dielectric plate 10.
  • the high-isolation dual-polarized broadband antenna of the present invention realizes the dual-polarized antenna by effectively adopting the orthogonal electric field mode of the stepped hollow-spaced slit resonance by setting the stepped hollow-spaced slit resonance, and can sufficiently reduce the antenna design size, and A high isolation is formed between the two feed ports so that the frequencies of the two feed ports can be independently tuned.
  • FIG. 2 is a schematic structural view of a preferred embodiment of a hollow metal sheet of a high isolation dual-polarization broadband antenna.
  • the wide sides of the first rectangular hollow 211, the second rectangular hollow 212, the third rectangular hollow 213, the fourth rectangular hollow 214, and the fifth rectangular hollow 215 are opposite to the upper surface of the dielectric plate 10.
  • the broad side central axis is parallel; the first rectangular hollow 211, the second rectangular hollow 212, the third rectangular hollow 2 13 , the fourth rectangular hollow 214 and the fifth rectangular hollow 214 are symmetrical about the broad side central axis.
  • the length W of the dielectric plate 10 and the hollow metal sheet 20 is 74 mm, the width L of the dielectric plate 10 and the hollow metal sheet 20 is 106 mm; and the length W0 of the first rectangular hollow 211 is 52 mm.
  • the width L0 of the first rectangular hollow 211 is 44 mm; the length W1 of the second rectangular hollow 212 is 32 mm, the width L1 of the second rectangular hollow 212 is 6 mm; and the length W2 of the third rectangular hollow 213 is 6.7.
  • the width L2 of the third rectangular hollow 213 is 10.5 mm; the length W3 of the fourth rectangular hollow 214 is 2.6 mm, and the width L3 of the fourth rectangular hollow 214 is 17.7 mm; The length W4 of the 215 is 9.6 mm, and the width L4 of the fifth rectangular hollow 215 is 1.5 mm.
  • the distance dx between the lower long side of the stepped hollow slit 21 and the lower longitudinal side of the upper surface of the dielectric plate 10 is 6.3 mm.
  • FIG. 3 is a schematic structural view of a preferred embodiment of an L-shaped metal microstrip line and an axe monopole structure of a high isolation dual-polarization broadband antenna.
  • the width WP1 of the L-shaped metal microstrip line 30 is 1.32 mm
  • the length d2 of the lateral portion 31 of the L-shaped metal microstrip line is 27.6 mm
  • the length dl of the vertical portion 32 of the L-shaped metal microstrip line It is 11.32mm.
  • the distance dO between the vertical portion 32 of the L-shaped metal microstrip line and the left wide side of the lower surface of the dielectric plate 10 is 20.4 mm.
  • the length WP2 of the first rectangular metal piece 511 of the axe-shaped monopole structure 50 is 2.5 mm
  • the width LP2 of the first rectangular metal piece 511 is 36 mm
  • the second rectangle of the axe-shaped monopole structure 50 The length WP3 of the metal piece 512 is 1 mm
  • the width of the second rectangular metal piece 512 is 11 mm
  • the length of the upper base S2 of the equilateral trapezoidal metal piece 521 of the axe-shaped monopole structure 50 is 2. 5mm
  • the lower base length SI of the equilateral trapezoidal metal piece is 16 mm
  • the height d3 of the equilateral trapezoidal metal piece is 6.75 mm.
  • the vertical distance between the center point of the equilateral trapezoidal metal piece 521 of the axe-shaped monopole structure 50 and the lower bottom side of the first rectangular metal piece 511 of the axe-shaped monopole structure 50 is 9.8 mm.
  • FIG. 4 is a schematic diagram showing simulation results of reflection coefficients of a high isolation dual-polarization broadband antenna of the present invention.
  • the isolation between the first feed port S11 and the second feed port S22 is less than -32 dB.
  • FIG. 5 is a schematic diagram showing the simulation result of the reflection coefficient of the L0 parameter of the high isolation dual-polarization broadband antenna of the present invention.
  • independent tuning of fm2 can be achieved by adjusting the width L0 of the first rectangular cutout 211.
  • FIG. 6 is a schematic diagram showing simulation results of reflection coefficients of the dl parameter of the high isolation dual-polarization broadband antenna of the present invention.
  • independent tuning of fm3 can be achieved by adjusting the length dl of the vertical portion 32 of the L-shaped metal microstrip line.
  • FIG. 7 is a schematic diagram showing the simulation results of the reflection coefficient of the W4 parameter of the high isolation dual-polarization broadband antenna of the present invention. As can be seen from Figure 7, tuning of fml is accomplished by adjusting the length W4 of the fifth rectangular cutout 215.
  • FIG. 8 is a schematic diagram showing the simulation results of the reflection coefficient of the LP3 parameter of the high isolation dual-polarization broadband antenna of the present invention.
  • independent tuning of fpl can be achieved by adjusting the width LP3 of the second rectangular metal piece 512 of the axe monopole structure 50.
  • Fig. 9 is a schematic diagram showing the simulation results of the reflection coefficient of the S1 parameter of the high-isolation dual-polarized broadband antenna of the present invention.
  • independent tuning of fp2 can be achieved by adjusting the length S of the lower base of the equilateral trapezoidal metal piece 521 of the axe monopole structure 50.
  • the high isolation dual-polarization broadband antenna of the present invention can reduce the size of the antenna design by setting a stepped hollow gap resonance and realizing the dual-polarized antenna by effectively utilizing the orthogonal electric field mode of the stepped hollow gap resonance, and can sufficiently reduce the antenna design size, and A high isolation is created between the two feed ports so that the frequencies of the two feed ports can be independently tuned.
  • the high isolation dual-polarization broadband antenna of the invention realizes the dual-polarized antenna by effectively adopting the orthogonal electric field mode of the stepped hollow-spaced slit resonance by setting the stepped hollow-spaced slit resonance, and can sufficiently reduce the antenna design size and High isolation between the electrical ports, making the frequencies of the two feed ports independent

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Abstract

La présente invention concerne une antenne à large bande à double polarisation à isolation élevée, comprenant : une feuille métallique creuse qui est fixée au niveau d'une surface supérieure d'une plaque diélectrique, et une microligne à ruban métallique en forme de L et une structure unipolaire en forme de hache qui sont fixées au niveau d'une surface inférieure de la plaque diélectrique, une fente creuse étagée étant gravée sur la feuille métallique creuse ; une portion horizontale de la microligne à ruban métallique en forme de L est parallèle à un bord long de la surface inférieure de la plaque diélectrique, tandis qu'une portion verticale de la microligne à ruban métallique en forme de L est perpendiculaire au bord long de la surface inférieure de la plaque diélectrique ; la structure unipolaire en forme de hache comprend une portion verticale en forme de bande et une portion horizontale en forme de hache ; la feuille métallique creuse est reliée électriquement à une extrémité mise à la masse d'une première tête sous-miniature en version A (SMA), et la microligne à ruban métallique en forme de L est reliée électriquement à une extrémité d'alimentation de la première tête SMA ; la structure unipolaire en forme de hache est reliée électriquement à une extrémité d'alimentation d'une deuxième tête SMA, et la feuille métallique creuse est reliée électriquement à une extrémité mise à la masse de la deuxième tête SMA. L'antenne à large bande à double polarisation à isolation élevée selon la présente invention réalise la double polarisation en utilisant un mode de champ électrique orthogonal de résonance à fente creuse étagée de telle sorte que deux ports d'alimentation peuvent être accordés indépendamment.
PCT/CN2017/101984 2017-04-07 2017-09-16 Antenne à large bande à double polarisation à isolation élevée WO2018184354A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710225701.9A CN106972250A (zh) 2017-04-07 2017-04-07 高隔离度双极化宽频天线
CN201710225701.9 2017-04-07

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206673107U (zh) * 2017-04-07 2017-11-24 深圳市景程信息科技有限公司 利用微带线馈电的三模宽带阶梯型缝隙天线
CN206806517U (zh) * 2017-04-07 2017-12-26 深圳市景程信息科技有限公司 双极化宽频天线
CN106972250A (zh) * 2017-04-07 2017-07-21 深圳市景程信息科技有限公司 高隔离度双极化宽频天线
CN107181051A (zh) * 2017-04-07 2017-09-19 深圳市景程信息科技有限公司 可重构的高隔离度双极化宽频天线

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US6072439A (en) * 1998-01-15 2000-06-06 Andrew Corporation Base station antenna for dual polarization
CN101667680A (zh) * 2009-08-31 2010-03-10 深圳市启汉科技有限公司 一种单级射频天线
CN202585734U (zh) * 2012-06-08 2012-12-05 天津职业技术师范大学 一种小型三频段印刷天线
CN104241827A (zh) * 2014-09-18 2014-12-24 厦门大学 一种多频兼容叠层微带天线
CN106972250A (zh) * 2017-04-07 2017-07-21 深圳市景程信息科技有限公司 高隔离度双极化宽频天线
CN107181051A (zh) * 2017-04-07 2017-09-19 深圳市景程信息科技有限公司 可重构的高隔离度双极化宽频天线

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CN102088133A (zh) * 2010-12-13 2011-06-08 上海大学 金属吊顶环境下室内覆盖平面天线
CN103296424B (zh) * 2013-05-07 2015-06-17 清华大学 一种基于单片双面印刷电路板的宽带双极化天线
CN103779654B (zh) * 2014-01-14 2016-02-03 西安电子科技大学 一种采用自相似馈电技术的双频宽带领结天线

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6072439A (en) * 1998-01-15 2000-06-06 Andrew Corporation Base station antenna for dual polarization
CN101667680A (zh) * 2009-08-31 2010-03-10 深圳市启汉科技有限公司 一种单级射频天线
CN202585734U (zh) * 2012-06-08 2012-12-05 天津职业技术师范大学 一种小型三频段印刷天线
CN104241827A (zh) * 2014-09-18 2014-12-24 厦门大学 一种多频兼容叠层微带天线
CN106972250A (zh) * 2017-04-07 2017-07-21 深圳市景程信息科技有限公司 高隔离度双极化宽频天线
CN107181051A (zh) * 2017-04-07 2017-09-19 深圳市景程信息科技有限公司 可重构的高隔离度双极化宽频天线

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