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WO2018161597A1 - Antenne à fentes reconfigurable en fréquence et en diagramme directionnel - Google Patents

Antenne à fentes reconfigurable en fréquence et en diagramme directionnel Download PDF

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Publication number
WO2018161597A1
WO2018161597A1 PCT/CN2017/107200 CN2017107200W WO2018161597A1 WO 2018161597 A1 WO2018161597 A1 WO 2018161597A1 CN 2017107200 W CN2017107200 W CN 2017107200W WO 2018161597 A1 WO2018161597 A1 WO 2018161597A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
metal plate
pattern
slot antenna
shaped
Prior art date
Application number
PCT/CN2017/107200
Other languages
English (en)
Chinese (zh)
Inventor
曲美君
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 WO2018161597A1 publication Critical patent/WO2018161597A1/fr

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/01—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system

Definitions

  • the present invention relates to the field of satellite communication technologies, and in particular, to a frequency and pattern reconfigurable slot antenna.
  • the main object of the present invention is to provide a frequency and pattern reconfigurable slot antenna, which aims to solve the technical problem that the antenna cannot be reconfigurable on the frequency and the direction in the prior art.
  • the present invention provides a frequency and pattern reconfigurable slot antenna, and the frequency and pattern reconfigurable slot antenna of the present invention includes a substrate and a surface attached to the upper surface of the substrate. a metal plate, a second metal plate attached to the lower surface of the substrate;
  • the first metal plate is etched with two left-right symmetric sickle-shaped slits, and the two left-right symmetric sickle-shaped slits are disposed at an intermediate position in the horizontal direction of the first metal plate, and each sickle-shaped slit
  • An L-shaped groove and a horizontal horizontal groove are disposed, wherein a long side of the L-shaped groove is horizontally disposed on the first metal plate, and one end of the horizontal horizontal groove is connected to an end of the long side of the L-shaped groove, a horizontal transverse groove is located above the end of the long side of the L-shaped groove, and a diode is disposed in the short side of the L-shaped groove, the one sickle-shaped slit The diode in the middle is connected to a diode in another sickle-shaped slit;
  • the second metal plate is etched with a fork-shaped slit and is bilaterally symmetrical.
  • the fork-shaped slit includes a T-shaped groove, two vertical grooves and two diodes, and one vertical groove and the ⁇ -shaped groove are horizontally One end of the side is connected by a diode, and the other of the vertical grooves is connected to the other end of the lateral side of the ⁇ -shaped groove by another diode.
  • the frequency and pattern reconfigurable slot antenna is a rectangular parallelepiped structure, and the first metal plate and the second metal plate are both copper faces and have the same thickness, and the first metal plate and the second metal are The thickness of the board is 0.5 division.
  • the substrate is a dielectric substrate of FR4, and the substrate has a thickness of 1.6 cm and a dielectric constant of 4.4.
  • the first metal plate and the second metal plate have a length of 40 mm
  • the first metal plate and the second metal plate have a width of 30 mm
  • the second metal plate has a vertical length.
  • the height of the groove is 9.3 mm
  • the length of the horizontal side of the T-shaped groove of the second metal plate is 30.4 mm
  • the height of the vertical side of the T-shaped groove of the second metal plate is 14 mm
  • the first The width of the vertical groove of the two metal plates is 3.14 mm
  • the width of the horizontal side and the vertical side of the T-shaped groove of the second metal plate is 3.14 mm
  • the length of the horizontal horizontal groove in the sickle-shaped slit 110 is 6.7 mm.
  • the length of the long side of the L-shaped groove is 9 mm
  • the length of the short side of the L-shaped groove is 4 mm
  • the width of the L-shaped groove and the width of the horizontal lateral groove are both 1 mm
  • the sickle-shaped slit distance is the first
  • the distance between the bottom edges of the metal sheets was 17 mm
  • the distance between the sickle-shaped slits from the sides of the first metal sheets was 1.5 mm.
  • the frequency and pattern of the reconfigurable slot antenna can be between 4.64 and 5.36 GHz.
  • the two diodes on the forked slit are turned on, the two diodes of the sickle-shaped slit are broken, and the frequency and the pattern of the reconfigurable slot antenna can be 3.71 -4.62GHz.
  • the frequency and pattern of the reconfigurable slot antenna has a "8" shape, and the H-plane pattern of the reconfigurable slot antenna is omnidirectional. .
  • the two tubes of the two sickle-shaped slits are both broken, and the frequency and the pattern can be reconstructed.
  • the working frequency band of the slot antenna is 3.71 ⁇ 4.21GHz.
  • the present invention adopts the above technical solution, and brings the technical effects as follows:
  • the frequency and the pattern reconfigurable slot antenna of the present invention can change the antenna according to the communication requirement while maintaining the polarization mode unchanged.
  • Frequency and radiation patterns reduce spatial noise in wireless communication systems, avoid electronic interference, improve system security, increase channel capacity, and are widely used in many aspects such as automotive and aircraft radar and satellite communication networks.
  • FIG. 1 is a schematic structural view of a side of a frequency and pattern reconfigurable slot antenna according to the present invention
  • FIG. 2 is a top plan view of a preferred embodiment of a frequency and pattern reconfigurable slot antenna of the present invention
  • FIG. 3 is a lower surface of a preferred embodiment of a frequency and pattern reconfigurable slot antenna of the present invention
  • 4 is a perspective view of a frequency and pattern reconfigurable slot antenna of the present invention
  • FIG. 5 is a schematic diagram of a preferred embodiment of antenna transmission coefficients for four states in a frequency and pattern reconfigurable slot antenna of the present invention.
  • FIGS. 6-1 to 6-4 are simulation diagrams of radiation patterns of four states of the frequency and pattern reconfigurable slot antenna of the present invention.
  • FIG. 1 is a schematic structural view of a side of a frequency and pattern reconfigurable slot antenna of the present invention
  • FIG. 2 is a perspective view of a preferred embodiment of a frequency and pattern reconfigurable slot antenna of the present invention
  • 3 is a schematic view of a lower surface of a preferred embodiment of a frequency and pattern reconfigurable slot antenna of the present invention
  • 4 is a perspective view of the frequency and pattern reconfigurable slot antenna of the present invention.
  • the frequency and pattern reconfigurable slot antenna 1 of the present invention includes a substrate 10, a first metal plate 11 and a second metal plate 12.
  • the frequency and pattern reconfigurable slot antenna 1 is a rectangular parallelepiped structure, wherein the first metal plate 11 is attached to the upper surface of the substrate 10, and the second metal plate 12 is attached to the The lower surface of the substrate 10.
  • the first metal plate 11 and the second metal plate 12 are both copper faces and have the same thickness.
  • the first metal plate 11 and the second metal plate 12 have a thickness of 0.5 ounce.
  • the substrate 10 is a dielectric substrate of FR4.
  • the thickness of the substrate 10 is preferably 1.6 cm, and the dielectric constant is preferably 4.4.
  • the first metal plate 11 is etched with two left and right symmetrical sickle-shaped slits 110, and the two left and right symmetrical sickle-shaped slits 110 are disposed at an intermediate position of the first metal plate 11 in the horizontal direction, wherein
  • the distance from the bottom edge of the first metal plate 11 is preferably 17 mm, and the distance from the side edge of the first metal plate 11 is preferably 1.5 mm.
  • the sickle-shaped slit 110 includes an L-shaped groove and a horizontal horizontal groove, wherein a long side of the L-shaped groove is horizontally disposed on the first metal plate 10, and one end of the horizontal horizontal groove is The ends of the long sides of the L-shaped grooves are connected, and the horizontal lateral grooves are located above the ends of the long sides of the L-shaped grooves.
  • a diode is provided in the short side of the L-shaped groove. The diode in the one sickle-shaped slit is connected to the diode in the other sickle-shaped slit. As shown in FIG.
  • the two left and right symmetrical blade-shaped slits 110 are respectively provided with a first diode D3 and a second diode D4, wherein the first diode D3 is disposed in the left sickle-shaped slit 110.
  • the second diode D4 is disposed in the right side of the sickle-shaped slit 110, and the first diode D3 is electrically connected to the second diode D4.
  • the first metal plate 11 has a length W and a height L.
  • the thickness of the sickle-shaped slit 110 is the thickness of the first metal plate 11, the length of the horizontal lateral groove in the sickle-shaped slit 110 is 11, the length of the long side of the L-shaped groove is 13, and the short side of the L-shaped groove The length is 14, and the width of the L-shaped groove and the width of the horizontal horizontal groove are both 12.
  • the second metal plate 12 has a length W and a height L.
  • a fork-shaped slit 120 is etched into the second metal plate 12.
  • the fork-shaped slot 120 includes a T-shaped slot, two vertical slots, and two diodes (a third diode D1 and a fourth diode D2, respectively), wherein a vertical slot and One end of the lateral side of the T-shaped groove is connected by a third diode D1, and the other vertical groove is connected to the other end of the lateral side of the T-shaped groove by a fourth diode D2.
  • the height of the two vertical grooves is l fed , the length of the horizontal side of the T-shaped groove a l stub , the height of the vertical side of the ⁇ -shaped groove is I f , the width of the vertical side and the horizontal side of the T-shaped groove is W f , and the width of the vertical groove of the second metal plate is also wf , the width of the two vertical grooves is d.
  • the thickness of the fork-shaped slit 120 is the thickness of the second metal plate 12.
  • the fork-shaped slit 120 has a bilaterally symmetrical structure on the second metal plate 12.
  • the frequency and pattern reconfigurable slot antenna 1 can change the length of the antenna resonant slot by controlling the combination of four diodes to achieve frequency reconfigurable. Specifically, by controlling the diode, the frequency can be controlled, that is, the frequency can be adjusted, and an antenna can be adjusted in multiple frequency bands.
  • the use of a sickle-shaped slit can reduce the E plane (ie, the plane of the wave propagation direction of the frequency and pattern reconfigurable slot antenna and the direction of the electric field direction) cross polarization (left and right symmetry, avoiding distortion of the pattern), Improve antenna radiation performance, and achieve the miniaturization of the same antenna (frequency and pattern reconfigurable slot antenna on the upper surface of the gap, increase the effective path of the current, the current travels along the gap, which is conducive to the concentrated distribution of current, improved on Current distribution on the surface and the lower surface to achieve miniaturization).
  • E plane ie, the plane of the wave propagation direction of the frequency and pattern reconfigurable slot antenna and the direction of the electric field direction
  • cross polarization left and right symmetry, avoiding distortion of the pattern
  • the antenna can realize the reconfigurable pattern.
  • the antenna is realized by a fork-shaped feed and a symmetrical antenna structure.
  • the diode BAR50-02V is selected as the RF switch.
  • the different combinations of diodes are shown in the table.
  • FIG. 5 shows a reflection coefficient curve simulated for each state of the antenna.
  • the antenna operating frequency band is 4.64-5.36 GHz
  • D 1, D2 is turned on, D3, D4 is broken.
  • the antenna working frequency band is 3.71-4.62GHz
  • D1 is turned on, D2, D3, D4 is broken, that is, state3 ⁇
  • the antenna working frequency band is 3.71 ⁇ 4.21GHz. Due to the symmetrical structure of the antenna, when D2 is turned on, Dl, D3, and D4 are broken, that is, state4 ⁇ , the working frequency band of the antenna is the same as that of state3.
  • FIGS. 5-1 to 5-4 show simulated radiation patterns of respective resonant frequencies of the antenna.
  • the pattern of the E plane is basically an "8" shape
  • the pattern of the H plane (the plane of the wave propagation direction and the magnetic field direction) changes as the state of the gate changes.
  • the H-plane pattern is basically omnidirectional
  • the antenna is frequency-reconfigurable in statel and state2 states.
  • D1 is broken
  • D2 is turned on
  • D3 and D4 are both broken, that is, state3 ⁇ .
  • the frequency and pattern reconfigurable slot antenna in the present invention omits the wires connecting the external control devices, and the first diode, the second diode, the third diode, and A control device that controls the fourth diode.
  • the control device may be, but is not limited to, an electronic switch or a microcontroller or any other device capable of controlling the twisting and closing of the diode.
  • the present invention adopts the above technical solution, and brings the technical effects as follows:
  • the frequency and the pattern reconfigurable slot antenna of the present invention can change the antenna according to the communication requirement while maintaining the polarization mode unchanged.
  • Frequency and radiation patterns reduce spatial noise in wireless communication systems, avoid electronic interference, improve system security, increase channel capacity, and are widely used in many aspects such as automotive and aircraft radar and satellite communication networks.

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  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)

Abstract

La présente invention concerne une antenne à fentes reconfigurable en fréquence et en diagramme directionnel. L'antenne à fentes reconfigurable en fréquence et en diagramme directionnel selon la présente invention comprend un substrat, une première plaque métallique fixée à la surface supérieure du substrat, et une seconde plaque métallique fixée à la surface inférieure du substrat. Deux fentes en forme de faucille à symétrie horizontale sont gravées sur la première plaque métallique. Chaque fente en forme de faucille comprend une diode. Une fente en forme de fourche est agencée dans la seconde plaque métallique. La fente en forme de fourche comprend une diode. En mettant en œuvre la présente invention sans changer le mode de polarisation, la fréquence et le diagramme directionnel de rayonnement d'une antenne sont changés en temps opportun en fonction des exigences de communication, de sorte que le bruit spatial d'un système de communication sans fil soit réduit, que l'interférence électronique soit évitée, que la sécurité du système soit améliorée et que la capacité de canal soit augmentée.
PCT/CN2017/107200 2017-03-04 2017-10-21 Antenne à fentes reconfigurable en fréquence et en diagramme directionnel WO2018161597A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710125535.5A CN107046178B (zh) 2017-03-04 2017-03-04 频率及方向图可重构缝隙天线
CN201710125535.5 2017-03-04

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Publication Number Publication Date
WO2018161597A1 true WO2018161597A1 (fr) 2018-09-13

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WO (1) WO2018161597A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107046178B (zh) * 2017-03-04 2018-11-20 深圳市景程信息科技有限公司 频率及方向图可重构缝隙天线
CN106785412B (zh) * 2017-03-04 2019-07-23 深圳市景程信息科技有限公司 基于镰刀形结构的可重构缝隙天线
CN106785411A (zh) * 2017-03-04 2017-05-31 深圳市景程信息科技有限公司 基于叉形结构的可重构缝隙天线
CN108736150B (zh) * 2018-03-22 2021-01-26 南京理工大学 一种Ku/Ka波段频率可重构微带天线
CN110518360B (zh) * 2019-08-14 2020-11-03 南京航空航天大学 采用双s-pin固态等离子体结构的缝隙天线

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102064384A (zh) * 2010-11-05 2011-05-18 哈尔滨工程大学 一种超宽带天线
CN104852137A (zh) * 2015-05-21 2015-08-19 山西大学 小型化频率可重构微带缝隙天线
US9142889B2 (en) * 2010-02-02 2015-09-22 Technion Research & Development Foundation Ltd. Compact tapered slot antenna
CN106785412A (zh) * 2017-03-04 2017-05-31 深圳市景程信息科技有限公司 基于镰刀形结构的可重构缝隙天线
CN106785411A (zh) * 2017-03-04 2017-05-31 深圳市景程信息科技有限公司 基于叉形结构的可重构缝隙天线
CN106877008A (zh) * 2017-02-09 2017-06-20 山西大学 一种小型化宽带频率‑方向图可重构天线
CN107046178A (zh) * 2017-03-04 2017-08-15 深圳市景程信息科技有限公司 频率及方向图可重构缝隙天线

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9142889B2 (en) * 2010-02-02 2015-09-22 Technion Research & Development Foundation Ltd. Compact tapered slot antenna
CN102064384A (zh) * 2010-11-05 2011-05-18 哈尔滨工程大学 一种超宽带天线
CN104852137A (zh) * 2015-05-21 2015-08-19 山西大学 小型化频率可重构微带缝隙天线
CN106877008A (zh) * 2017-02-09 2017-06-20 山西大学 一种小型化宽带频率‑方向图可重构天线
CN106785412A (zh) * 2017-03-04 2017-05-31 深圳市景程信息科技有限公司 基于镰刀形结构的可重构缝隙天线
CN106785411A (zh) * 2017-03-04 2017-05-31 深圳市景程信息科技有限公司 基于叉形结构的可重构缝隙天线
CN107046178A (zh) * 2017-03-04 2017-08-15 深圳市景程信息科技有限公司 频率及方向图可重构缝隙天线

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