WO2021244158A1 - Antenne à double polarisation et équipement de local de client - Google Patents

Antenne à double polarisation et équipement de local de client Download PDF

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Publication number
WO2021244158A1
WO2021244158A1 PCT/CN2021/087818 CN2021087818W WO2021244158A1 WO 2021244158 A1 WO2021244158 A1 WO 2021244158A1 CN 2021087818 W CN2021087818 W CN 2021087818W WO 2021244158 A1 WO2021244158 A1 WO 2021244158A1
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WO
WIPO (PCT)
Prior art keywords
radiating
plate
dual
polarized antenna
vibrator unit
Prior art date
Application number
PCT/CN2021/087818
Other languages
English (en)
Chinese (zh)
Inventor
揭骏仁
Original Assignee
Oppo广东移动通信有限公司
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Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2021244158A1 publication Critical patent/WO2021244158A1/fr

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    • 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
    • H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
    • 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
    • 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
    • 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

Definitions

  • This application relates to the field of antenna technology, in particular to a dual-polarized antenna and customer front equipment.
  • CPE Customer Premise Equipment
  • Wi-Fi Wireless Fidelity
  • CPE can be widely used for wireless network access in rural areas, towns, hospitals, units, factories, communities, etc., which can save the cost of laying wired networks.
  • CPE can re-relay the base station signal. It turns the received signal into a Wi-Fi signal and provides it to nearby devices. Compared with smart phones, notebooks and other terminal devices, CPE antennas have stronger gain and higher power, and its signal transmission and reception capabilities are more powerful than smart phones. Therefore, in some places where the smart phone has no signal, the CPE may have the signal. CPE can turn operator network signals into Wi-Fi signals, and more devices such as smart phones, tablets, laptops, etc. can use CPE to access the Internet.
  • the embodiments of the present application provide a dual-polarized antenna and customer front-end equipment, which can realize the miniaturization of the antenna.
  • an embodiment of the present application provides a dual-polarized antenna, including:
  • a radiating plate the radiating plate includes a first surface and a second surface that are oppositely arranged, and a first vibrator unit and a second vibrator unit with polarization directions orthogonal to each other are provided on the first surface;
  • a first supporting plate, the first supporting plate is connected to the second surface of the radiating plate
  • the second support plate, the second support plate is connected to the second surface of the radiant plate, the second support plate and the first support plate are arranged orthogonally, the second support plate and the first support plate
  • the supporting plate supports the radiant plate together;
  • An antenna radiating part is located on the first supporting plate and the second supporting plate, and the antenna radiating part is electrically connected to the first dipole unit and the second dipole unit, respectively.
  • an embodiment of the present application provides a customer front-end device, including:
  • a circuit board which is electrically connected to the dual-polarized antenna, so that the dual-polarized antenna transmits radio frequency signals;
  • the dual-polarized antenna includes:
  • a radiating plate the radiating plate includes a first surface and a second surface that are oppositely arranged, and a first vibrator unit and a second vibrator unit with polarization directions orthogonal to each other are provided on the first surface;
  • a first supporting plate, the first supporting plate is connected to the second surface of the radiating plate
  • the second support plate, the second support plate is connected to the second surface of the radiant plate, the second support plate and the first support plate are arranged orthogonally, the second support plate and the first support plate
  • the supporting plate supports the radiant plate together;
  • An antenna radiating part is located on the first supporting plate and the second supporting plate, and the antenna radiating part is electrically connected to the first dipole unit and the second dipole unit, respectively.
  • Figure 1 is a schematic structural diagram of a customer front-end device provided by an embodiment of the application.
  • Figure 2 is a schematic diagram of an application scenario of a customer front-end device according to an embodiment of the application.
  • FIG. 3 is a schematic diagram of the first structure of a dual-polarized antenna provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of the connection of the first support plate and the second support plate shown in FIG. 3.
  • FIG. 5 is a schematic diagram of the first structure of the first vibrator unit and the second vibrator unit shown in FIG. 3.
  • FIG. 6 is a schematic diagram of a second structure of the first vibrator unit and the second vibrator unit shown in FIG. 3.
  • Fig. 7 is a schematic diagram of the connection between the antenna radiating part and the first dipole unit and the second dipole unit shown in Fig. 3.
  • Fig. 8 is a schematic diagram of an exploded structure of the dual-polarized antenna shown in Fig. 3.
  • FIG. 9 is a schematic diagram of the first direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8.
  • FIG. 10 is a schematic diagram of the second direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8.
  • FIG. 11 is a schematic diagram of electrical connections between the first vibrator unit and the second vibrator unit shown in FIG. 8.
  • FIG. 12 is a schematic diagram of a second structure of a dual-polarized antenna provided by an embodiment of this application.
  • FIG. 13 is a schematic diagram of the structure of the reflector shown in FIG. 12.
  • FIG. 14 is a graph of S21 parameters of the first dipole unit and the second dipole unit of the dual-polarized antenna provided by an embodiment of the application.
  • FIG. 15 is a graph of radiation efficiency of a dual-polarized antenna provided by an embodiment of the application.
  • FIG. 16 is a first three-dimensional radiation pattern of a dual-polarized antenna provided by an embodiment of this application.
  • Fig. 17 is a plane radiation pattern of the dual-polarized antenna shown in Fig. 16.
  • FIG. 18 is a second three-dimensional radiation pattern of the dual-polarized antenna provided by an embodiment of this application.
  • Fig. 19 is a plane radiation pattern of the dual-polarized antenna shown in Fig. 18.
  • the embodiment of the present application provides a dual-polarized antenna and customer front-end equipment.
  • the dual-polarized antenna can be set in the customer's front-end equipment.
  • Customer front-end equipment can be equipment that has the function of re-relaying base station signals and turning the received signals into Wi-Fi signals for use by nearby equipment, such as wireless routers, repeaters, telephones, and optical devices.
  • Devices such as cats and computers can all be customer front-end devices in the embodiments of the present application.
  • FIG. 1 is a schematic structural diagram of a customer front-end device provided by an embodiment of this application.
  • the customer premises equipment 10 may include a dual-polarized antenna 100, a housing 200, and a circuit board 300. Wherein, both the circuit board 300 and the dual-polarized antenna 100 may be arranged in the housing 200, and the dual-polarized antenna 100 may include one or more. For example, four dual-polarized antennas 100 are provided in FIG. 1.
  • the circuit board 300 can be provided with a radio frequency circuit. When the dual-polarized antenna 100 is electrically connected to the circuit board 300, under the control of the radio frequency circuit, the dual-polarized antenna 100 can perform wireless communication with the base station and other wireless devices to achieve Transmission of radio frequency signals.
  • FIG. 2 is a schematic diagram of an application scenario of a customer front-end device provided in an embodiment of the application.
  • the customer front-end device 10 of the embodiment of the present application can control the dual-polarized antenna 100 to re-relay the signal of the base station 20, and the customer front-end device 10 can receive the dual-polarized antenna 100
  • the received signal becomes a Wi-Fi signal, and is provided to the nearby terminal device 30, such as a mobile phone, a tablet computer, a notebook computer, etc., through the dual-polarized antenna 100.
  • FIG. 3 is a schematic diagram of the first structure of a dual-polarized antenna provided by an embodiment of this application.
  • the dual-polarized antenna 100 of the embodiment of the present application includes a radiating plate 110, a first supporting plate 120, a second supporting plate 130, a first dipole unit 140, a second dipole unit 150, and an antenna radiation part 160.
  • the radiating plate 110 includes a first surface 111 and a second surface 112 oppositely disposed, the first vibrator unit 140 and the second vibrator unit 150 are disposed on the first surface 111, and the poles of the first vibrator unit 140 and the second vibrator unit 150 The chemical directions are orthogonal to each other.
  • the first support plate 120 and the second support plate 130 are located on one side of the second surface 112 of the radiation plate 110, the first support plate 120 and the second support plate 130 are arranged orthogonally, and the first support plate 120 and the second support plate
  • the plate 130 is also connected to the second surface 112 so that the first support plate 120 and the second support plate 130 can jointly support the radiant plate 110.
  • the antenna radiation part 160 is located on the first support plate 120 and the second support plate 130 at the same time.
  • a part of the antenna radiation part 160 is located on the first support plate 120 and another part of the antenna radiation part 160 is located on the second support plate 130.
  • the antenna radiating part 160 is electrically connected to the first dipole unit 140 and the second dipole unit 150, respectively, and the antenna radiating part 160 can radiate radio frequency signals together with the first dipole unit 140 and the second dipole unit 150.
  • the antenna radiation part 160 can increase the radiation length of the first element unit 140 and the second element unit 150.
  • the first element unit 140 and the second element unit 140 The area of the second dipole unit 150 can be small, so that the volume of the entire dual-polarized antenna 100 is small, and the dual-polarized antenna 100 can be miniaturized; on the other hand, the first dipole unit 140 and the second dipole with increased length
  • the unit 150 can cover low-frequency radio frequency signals, so that the frequency band of the dual-polarized antenna 100 can also be expanded.
  • the antenna radiating part 160 is arranged on the first supporting plate 120 and the second supporting plate 130, and there is no need to additionally provide a carrier for the antenna radiating part 160, which simplifies the structure of the dual-polarized antenna 100, and at the same time,
  • the antenna radiating part 160 is arranged on the first supporting plate 120 and the second supporting plate 130 which are arranged orthogonally. No additional adjustment of the position of the antenna radiating part 160 is required to ensure that the first vibrator unit 140 and the first vibrator unit 140 after the antenna radiating part 160 are electrically connected to each other.
  • the second vibrator unit 150 is still arranged orthogonally, thereby reducing the difficulty of assembling the dual-polarized antenna 100.
  • first support plate 120 and the second support plate 130 can be orthogonally connected together by riveting, screw connection, etc.
  • first support plate 120 and the second support plate 130 can also be orthogonally connected together by clamping. .
  • FIG. 4 is a schematic diagram of the connection between the first support plate and the second support plate shown in FIG. 3.
  • the lower end of the first support plate 120 may be provided with a first notch 121
  • the upper end of the second support plate 130 may be provided with a second notch 131.
  • the positions of the first notch 121 and the second notch 131 may match, so that the first support
  • the plate 120 can be snapped into the second notch 131
  • the second support plate 130 can be snapped into the first notch 121, the upper and lower ends of the first support plate 120 and the second support plate 130 can be flush, so that The orthogonal clamping connection of the first supporting plate 120 and the second supporting plate 130 is realized.
  • connection method of the first support plate 120 and the second support plate 130 in the embodiment of the present application is not limited to this, and other methods that can realize the orthogonal connection of the first support plate 120 and the second support plate 130 are all It is within the protection scope of the embodiments of this application.
  • the lengths of the first supporting plate 120 and the second supporting plate 130 may be equal to the diagonal length of the radiating plate 110. That is, the first supporting plate 120 may be arranged along one diagonal line of the radiating plate 110, and the second supporting plate 130 may be arranged along another diagonal line of the radiating plate 110, so that the first supporting plate of the embodiment of the present application
  • the contact area between the plate 120 and the second support plate 130 and the radiation plate 110 is larger, and the radiation plate 110 can be better supported.
  • first support plate 120 and the second support plate 130 to support the radiation plate 110 can increase the clearance area of the first vibrator unit 140 and the second vibrator unit 150 on the radiation plate 110, thereby increasing the first vibrator The isolation of the unit 140 and the second vibrator unit 150.
  • the first vibrator unit 140 and the second vibrator unit 150 of the embodiment of the present application may be directly or indirectly connected to the first surface 111 of the radiation plate 110.
  • the first vibrator unit 140 and the second vibrator unit 150 may be directly etched on the first surface 111.
  • the first vibrator unit 140 and the second vibrator unit 150 may be attached to the first surface 111 in the form of a patch.
  • the first vibrator unit 140 and the second vibrator unit 150 may be formed on the first surface 111 in the form of silver paste spraying. It can be understood that the embodiment of the present application does not specifically limit the connection form of the first vibrator unit 140 and the second vibrator unit 150.
  • the first vibrator unit 140 may be a dipole vibrator unit.
  • FIG. 5 is a schematic diagram of the first structure of the first vibrator unit and the second vibrator unit shown in FIG. 3.
  • the first vibrator unit 140 may include two radiating arms, for example, a first radiating arm 141 and a second radiating arm 142.
  • the first radiating arm 141 and the second radiating arm 142 may be located on the same radiation plane, and the first radiating arm 141 may be arranged symmetrically about a first line of symmetry L1, and the second radiating arm 142 may also be arranged symmetrically about the first line of symmetry L1.
  • first radiating arm 141 and the second radiating arm 142 may also be arranged symmetrically about an origin O, so that the first radiating arm 141 and the second radiating arm 142
  • the formed first vibrator unit 140 is a dipole vibrator unit.
  • the second vibrator unit 150 may also be a dipole vibrator unit.
  • the second vibrator unit 150 may include two radiating arms, for example, a third radiating arm 151 and a fourth radiating arm 152.
  • the third radiating arm 151 and the fourth radiating arm 152 may be located on the same radiating plane, and the third radiating arm 151 may be arranged symmetrically about a second line of symmetry L2, and the fourth radiating arm 152 may also be arranged about the second symmetry line L2.
  • the two symmetry lines L2 are arranged axisymmetrically.
  • the third radiating arm 151 and the fourth radiating arm 152 may also be arranged symmetrically about the center of the origin O, so that the second dipole unit 150 formed by the third radiating arm 151 and the fourth radiating arm 152 is a dipole dipole unit.
  • the polarization direction of the first vibrator unit 140 and the polarization direction of the second vibrator unit 150 are orthogonal to each other.
  • the first symmetry line L1 of the first vibrator unit 140 and the second symmetry line L2 of the second vibrator unit 150 may intersect at the origin O, and the first symmetry line L1 and the second symmetry line The angle between L2 can be 90 degrees.
  • the first radiating arm 141, the second radiating arm 142, the third radiating arm 151, and the fourth radiating arm 152 are arranged in two mirror images.
  • first radiating arm 141 and the third radiating arm 151 and between the second radiating arm 142 and the fourth radiating arm 152 can be arranged symmetrically about the third symmetry line L3, the first radiating arm 141 and the fourth radiating arm
  • the arms 152 and the second radiating arm 142 and the third radiating arm 151 may be arranged axisymmetrically about the fourth line of symmetry L4.
  • the angle between the first line of symmetry L1 and the third line of symmetry L3 may be -45 degrees
  • the angle between the second line of symmetry L2 and the third line of symmetry L3 may be +45 degrees
  • the first vibrator The unit 140 and the second vibrator unit 150 can form a ⁇ 45 degree dual-polarized antenna radiator.
  • the polarization orthogonality of ⁇ 45 degrees can ensure the isolation between +45 degrees and -45 degrees between the first element unit 140 and the second element unit 150 to meet the isolation between the intermodulation pair antennas Degree requirements ( ⁇ 30dB), and can effectively ensure the gain of antenna diversity when receiving signals.
  • the shape of the first vibrator unit 140 and the second vibrator unit 150 may be, but not limited to, a variety of shapes such as petals, squares, butterflies, circles, triangles, etc.
  • the first vibrator unit 140 and the second vibrator unit 150 in FIG. 5 have a rectangular shape.
  • FIG. 6, which is a schematic diagram of the second structure of the first vibrator unit and the second vibrator unit shown in FIG. 3.
  • the vibrator unit 150 has a petal shape. It is understandable that the embodiment of the present application does not limit the shapes of the first vibrator unit 140 and the second vibrator unit 150.
  • the first vibrator unit 140 and the second vibrator unit 150 may be provided with a hollow structure or a groove structure.
  • one or more groove structures may be formed on the first vibrator unit 140 and the second vibrator unit 150 by etching, cutting, or the like.
  • the first radiating arm 141 of the first vibrator unit 140 may be provided with a first through hole 143 penetrating the thickness direction of the radiation plate 110, and the first through hole 143 of the first vibrator unit 140
  • the second radiating arm 142 may be provided with a second through hole 144 penetrating the thickness direction of the radiating plate 110.
  • the third radiating arm 151 of the second vibrator unit 150 may also be provided with a third through hole 153 penetrating the thickness direction of the radiation plate 110, and the fourth radiating arm 152 of the second vibrator unit 150 may also be provided with a penetrating radiation.
  • the shape and size of the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 may be exactly the same, and the first through hole 143, the second through hole 144, and the third through hole 154 may be exactly the same in shape and size.
  • the hole 153 and the fourth through hole 154 can also be arranged in two mirror images to ensure that the first radiating arm 141, the second radiating arm 142, the third radiating arm 151 and the fourth radiating arm 152 are also arranged in a mirror image.
  • first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 may be through hole structures of any shape, such as but not limited to a circle, a ring, a triangle, a rectangle, Butterfly shape, petal shape, etc., the embodiment of the present application does not specifically limit the structure of the above-mentioned through hole.
  • the number of the first through hole 143, the second through hole 144, the third through hole 153, and the fourth through hole 154 is not limited to one, and may include more than one. As shown in FIG. 5, the number of through holes of the first through hole 143, the second through hole 144, the third through hole 153 and the fourth through hole 154 are all three. It should be noted that the number of the first through holes 143, the second through holes 144, the third through holes 153, and the fourth through holes 154 can be the same to ensure that the first radiating arm 141, the second radiating arm 142, and the The three radiating arms 151 and the fourth radiating arms 152 are also arranged in two mirror images.
  • the first dipole unit 140 and the second dipole unit 150 are provided with a through-hole structure. Due to the existence of the through-hole structure, the first dipole unit 140 and the second dipole unit 150 are in communication. A capacitance effect can be generated at the edge of the hole structure, so that the working frequency band of the first vibrator unit 140 and the second vibrator unit 150 can be extended to a high frequency band.
  • FIG. 7 is a schematic diagram of the connection between the antenna radiating part and the first dipole unit and the second dipole unit shown in FIG.
  • the antenna radiating part 160 of the embodiment of the present application may include four sub-radiating parts to correspond to the two radiating arms of the first dipole unit 140 and the two radiating arms of the second dipole unit 150, and each sub-radiating part may correspond to A radiating arm is connected so that a radiating arm and a sub-radiating part form a whole and jointly radiate radio frequency signals.
  • the antenna radiation part 160 includes a first sub-radiation part 161, a second sub-radiation part 162, a third sub-radiation part 163, and a fourth sub-radiation part 164.
  • a radiating arm 141 is electrically connected to form the first radiating unit;
  • the second sub-radiating portion 162 can be electrically connected to the second radiating arm 142 to form a second radiating unit;
  • the third sub-radiating portion 163 can be electrically connected to the third radiating arm 151 And form a third radiation unit;
  • the fourth sub-radiation part 164 may be electrically connected with the fourth radiation arm 152 to form a fourth radiation unit.
  • first radiation group, second radiation group, third radiation group, and fourth radiation group can also be arranged in two mirror images, so that the first radiation group, the second radiation group, the third radiation group and the first radiation group can be arranged in two mirror images.
  • the four radiators as a whole can still form a dual-polarized antenna radiator.
  • the shapes and sizes of the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163, and the fourth sub-radiation portion 164 should be completely the same.
  • the shapes and sizes of the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163, and the fourth sub-radiation portion 164 may be approximately the same. That is to say, in practical applications, the above-mentioned first radiating unit, second radiating unit, third radiating unit, and fourth radiating unit are arranged in two approximate mirror images to realize the setting of the dual-polarized antenna 100.
  • the lengths of the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163, and the fourth sub-radiation portion 164 may be inconsistent within a certain range.
  • the first dipole unit 140 including the first radiation arm 141 and the second radiation arm 142, and the second dipole unit 150 including the third radiation arm 151 and the fourth radiation arm 152 are arranged on the radiation plate 110
  • the first surface 111; and the antenna radiation portion 160 including the first sub-radiation portion 161, the second sub-radiation portion 162, the third sub-radiation portion 163 and the fourth sub-radiation portion 164 is disposed on the second surface of the radiation plate 110 112 side. Therefore, when the antenna radiating portion 160 is electrically connected to the first vibrator unit 140 and the second vibrator unit 150, four slits penetrating through the first surface 111 and the second surface 112 can be opened on the radiation plate 110 (not shown in the figure).
  • the four slits can be set corresponding to the four sub-radiating parts, so that each sub-radiating part of the antenna radiating part 160 can pass through a slit to be directly or indirectly connected to a radiating arm on the first surface 111 , Such as welding together, so as to achieve electrical connection.
  • the antenna radiating part 160 is electrically connected to the first dipole unit 140 and the second dipole unit 150 through a slit on the radiating plate 110.
  • the antenna radiating part 160 of the embodiment of the present application can be increased by the thickness of the radiating plate 110, thereby making the antenna radiating part 160 longer to cover signals of lower frequency bands; on the other hand, when the length of the antenna radiating part 160 is fixed
  • the antenna radiating part 160 of the embodiment of the present application can hide the length of the thickness of the radiating part without occupying additional space, so that the height of the dual-polarized antenna 100 can be made smaller, and the size of the dual-polarized antenna 100 can be made smaller .
  • FIG. 8 is a schematic diagram of the exploded structure of the dual-polarized antenna shown in FIG.
  • the dual-polarized antenna 100 of the embodiment of the present application further includes a first balun feed structure 170 and a second balun feed structure 180.
  • the first balun feeding structure 170 may be directly or indirectly connected to the first supporting plate 120.
  • the first balun feeding structure 170 may be formed on the side of the first supporting plate 120 by etching, patching, etc. .
  • the first balun feeding structure 170 may be electrically connected to the two radiating arms of the first vibrator unit 140 respectively, so that the currents flowing through the two radiating arms of the first vibrator unit 140 are in the same direction.
  • the second balun feeding structure 180 may be directly or indirectly connected to the second supporting plate 130.
  • the second balun feeding structure 180 may be formed on the side of the second supporting plate 130 by etching, patching, etc. superior.
  • the second balun feeding structure 180 may be electrically connected to the two radiating arms of the second vibrator unit 150 respectively, so that the currents flowing through the two radiating arms of the second vibrator unit 150 are in the same direction.
  • the dipole antenna is a balanced antenna, and the commonly used feed coaxial cable is an unbalanced transmission line. If the pole antenna is electrically connected to the coaxial cable, high-frequency current flows through the outer sheath of the coaxial cable, and the currents of the two radiating arms of the dipole antenna are different in direction, which will affect the radiation of the antenna.
  • the dual-polarized antenna 100 of the embodiment of the present application uses the first balun feed structure 170 and the second balun feed structure 180, so that the currents flowing through the two radiating arms of the first vibrator unit 140 are in the same direction and flow through The currents of the two radiating arms of the second vibrator unit 150 are also in the same direction, thereby ensuring that the antenna has better radiation performance.
  • both the first balun feeding structure 170 and the second balun feeding structure 180 may include a coupling part and a feeding part.
  • FIG. 9 is a schematic diagram of the first direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8
  • FIG. 10 is The schematic diagram of the second direction structure of the first balun feeding structure and the second balun feeding structure shown in FIG. 8.
  • the first balun feeding structure 170 may include a first coupling part 171 and a first feeding part 172.
  • the first coupling portion 171 and the first feeding portion 172 may be respectively connected to two opposite sides of the first support plate 120.
  • the first coupling portion 171 may be directly or indirectly connected to the first side surface of the first support plate 120 ( Figure (Not shown)
  • the first power feeding portion 172 may be directly or indirectly connected to the second side surface (not shown in the figure) of the first support plate 120, wherein the first side surface and the second side surface are arranged opposite to each other.
  • first coupling part 171 may be electrically connected to the two radiating arms of the first vibrator unit 140, and the other end of the first coupling part 171 may be grounded.
  • One end of the first power feeding part 172 may be used for electrical connection with the inner core of the coaxial line, and the other end of the first power feeding part 172 may be coupled and connected with the first coupling part 171, and at the same time, the outer core of the coaxial line is grounded.
  • the coaxial line, the first feeding part 172, the first coupling part 171 and the radiating arm of the first vibrator unit 140 can form a complete signal loop, and the coaxial line feeds the radio frequency signal into the first feeding part 172 ,
  • the first feeding part 172 couples the radio frequency signal to the first coupling part 171 through electromagnetic coupling, and the first coupling part 171 transmits the radio frequency signal to the two radiating arms of the first vibrator unit 140 so as to flow through the first coupling part 171.
  • the currents of the two radiating arms of the vibrator unit 140 are in the same direction so that they can transmit radio frequency signals together.
  • the first coupling part 171 may include two sub-parts, for example, a first sub-coupling part 1711 and a second sub-coupling part 1712.
  • the first power feeder 172 may include two sub-parts, for example, a first power feeder 1721 and a second power feeder 1722.
  • One end of the first sub-feeding portion 1721 is electrically connected to the inner core of the coaxial line, the other end is coupled to the first sub-coupling portion 1711, and one end of the first sub-coupling portion 1711 is connected to the first sub-coupling unit 140.
  • the radiating arm 141 is electrically connected, and the other end of the first sub-coupling portion 1711 is grounded, so that the first sub-feeding portion 1721 and the first sub-coupling portion 1711 can form a first feeding structure.
  • one end of the second sub-feeding portion 1722 is electrically connected to the inner core of the coaxial line, and the other end is coupled to the second sub-coupling portion 1712, and one end of the second sub-coupling portion 1712 is connected to the first vibrator unit 140.
  • the two radiating arms 142 are electrically connected, and the other end of the second sub-coupling portion 1712 is grounded, so that the second sub-feeding portion 1722 and the second sub-coupling portion 1712 can form a second power feeding structure.
  • the second balun feeding structure 180 may include a second coupling part 181 and a second feeding part 182.
  • the second coupling portion 181 and the second feeding portion 182 may be respectively connected to two opposite sides of the second support plate 130.
  • the second coupling portion 181 may be directly or indirectly connected to the third side surface of the second support plate 130 ( Figure (Not shown)
  • the second power feeding portion 182 may be directly or indirectly connected to the fourth side surface (not shown in the figure) of the second support plate 130, wherein the third side surface and the fourth side surface are arranged opposite to each other.
  • the structure of the second coupling portion 181 may be the same as the structure of the first coupling portion 171.
  • one end of the second coupling portion 181 may be electrically connected to the two radiating arms of the second vibrator unit 150, and the second The other end of the coupling part 181 may be grounded.
  • the structure of the second power feeder 182 may also be the same as the structure of the first power feeder 172.
  • one end of the second power feeder 182 may be used for electrical connection with the inner core of the coaxial cable.
  • the other end of the coaxial cable may be connected to the second coupling part 181, and at the same time, the outer core of the coaxial line may be grounded.
  • the coaxial line, the second power feeding portion 182, the second coupling portion 181, and a radiation arm of the second vibrator unit 150 can form a complete signal loop, so that the two radiations flowing through the second vibrator unit 150
  • the currents of the arms are in the same direction so that they can transmit radio frequency signals together.
  • the second coupling portion 181 may include a third sub-coupling portion 1811 and a fourth sub-coupling portion 1812.
  • the second power feeder 182 may include a third sub power feeder 1821 and a fourth sub power feeder 1822.
  • One end of the third sub-feeding portion 1821 is electrically connected to the inner core of the coaxial line, the other end is coupled to the third sub-coupling portion 1811, and one end of the third sub-coupling portion 1811 is connected to the third radiating arm of the second vibrator unit 150 151 is electrically connected, and the other end of the third sub-coupling portion 1811 is grounded, so that the third sub-feeding portion 1821 and the third sub-coupling portion 1811 can form a third feeding structure.
  • one end of the fourth sub-feeding portion 1822 is electrically connected to the inner core of the coaxial line, the other end is coupled to the fourth sub-coupling portion 1812, and one end of the fourth sub-coupling portion 1812 is connected to the second vibrator unit 150.
  • the four radiating arms 152 are electrically connected, and the other end of the fourth sub-coupling portion 1812 is grounded, so that the fourth sub-feeding portion 1822 and the fourth sub-coupling portion 1812 can form a fourth feeding structure.
  • the first balun feed structure 170 is disposed on the first support plate 120
  • the second balun feed structure 180 is disposed on the second support plate 130.
  • the installation space of the first balun feed structure 170 and the second balun feed structure 180 is additionally reserved, which saves the internal space of the customer's front-end equipment 10; on the other hand, the first support plate 120 and the second support plate 130
  • the area of the first balun feeding structure 170 and the second balun feeding structure 180 can be arranged at any position of the first supporting plate 120 and the second supporting plate 130, so as to facilitate the adjustment of the first vibrator unit 140, Frequency and gain of the second vibrator unit 150.
  • the first feeding bar can also be arranged orthogonally, so that the installation difficulty of the first feeding balun structure and the second feeding balun structure can be reduced.
  • first to fourth sub-coupling parts and the first to fourth sub-feeding parts of the embodiments of the present application can be formed on the first support plate 120 and the second support plate 130 by etching, patching, etc. superior.
  • first sub-coupling part 1711 and the second sub-coupling part 1712 may be two independent parts
  • the third sub-coupling part 1811 and the fourth sub-coupling part 1812 may also be two independent parts.
  • the first sub-coupling portion 1711 and the second sub-coupling portion 1712 can also be a whole
  • the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 can also be a whole, thereby simplifying the first coupling portion 171 and the second sub-coupling portion.
  • first sub-feeder 1721 and the second sub-feeder 1722 may be two independent parts, and the third sub-feeder 1821 and the fourth sub-feeder 1822 may also be two independent parts.
  • first sub-feeding portion 1721 and the second sub-feeding portion 1722 can also be a whole, and the third sub-feeding portion 1821 and the fourth sub-feeding portion 1822 can also be a whole, so that the first sub-feeding portion can be simplified.
  • the first sub-coupling portion 1711 and the second sub-coupling portion 1712 may be symmetrically arranged about a center line L5 passing through the origin and perpendicular to the first surface 111 of the radiation plate 110.
  • the third sub-coupling portion 1811 and the fourth sub-coupling portion 1812 may also be symmetrically arranged about the center line L5.
  • the first sub-coupling portion 1711, the second sub-coupling portion 1712, the third sub-coupling portion 1811, and the fourth sub-coupling portion 1812 may be trapezoidal as shown in FIGS. 9 and 10 to increase the area of the sub-coupling portion.
  • first sub-coupling portion 1711, the second sub-coupling portion 1712, the third sub-coupling portion 1811, and the fourth sub-coupling portion 1812 are not limited to this, and may be other rectangular, circular, or butterfly shapes.
  • the embodiment of the application does not limit this.
  • the first sub-coupling portion 1711 and the second sub-coupling portion 1712 only need to be arranged approximately symmetrically, and do not need to be completely symmetrically arranged.
  • the third sub-coupling part 1811 and the fourth sub-coupling part 1812 only need to be arranged approximately symmetrically, and they do not need to be arranged strictly symmetrically.
  • the first sub-feeding portion 1721 and the second sub-feeding portion 1722 may be distributed on both sides of the center line L5.
  • the third sub-feeding portion 1821 and the fourth sub-feeding portion 1822 may also be distributed on both sides of the center line L5.
  • the first sub-feeding portion 1721 and the second sub-feeding portion 1722, the third sub-feeding portion 1821 and the fourth sub-feeding portion 1822 may not be strictly symmetrical.
  • FIG. 11 is a schematic diagram of electrical connections between the first vibrator unit and the second vibrator unit shown in FIG. 8.
  • the first sub-coupling portion 1711 and the first sub-feeding portion 1721 may form a first feeding structure 173;
  • the second sub-coupling portion 1712 and the second sub-feeding portion 1722 may form a second feeding structure 174;
  • the third The sub-coupling portion 1811 and the third sub-feeding portion 1821 may form the third feeding structure 183;
  • the fourth sub-coupling portion 1812 and the fourth sub-feeding portion 1822 may form the fourth feeding structure 184.
  • first feeding structure 173, the second feeding structure 174, the third feeding structure 183, and the fourth feeding structure 184 may be arranged around the center line L5.
  • first vibrator unit 140 The radiating arm 141, the second radiating arm 142, and the third radiating arm 151 and the fourth radiating arm 152 of the second vibrator unit 150 may each include a head end and an end.
  • the first radiating arm 141 includes a head end 1411 and an end 1412.
  • each feeding structure can be connected to the head end of a radiating arm, and each sub-radiating part can be connected to the end of a radiating arm.
  • the head end 1411 of the first radiating arm 141 may be connected to the first sub-coupling portion 1711 of the first feeding structure 173, and the end 1412 of the first radiating arm 141 may be connected to the first sub-radiating portion 161.
  • the head end of the second radiating arm 142 may be connected to the second sub-coupling part 1712 of the second feeding structure 174, and the end of the second radiating arm 142 may be connected to the second sub-radiating part 162.
  • the head end of the third radiating arm 151 may be connected to the third sub-coupling part 1811 of the third feeding structure 183, and the end of the third radiating arm 151 may be connected to the third sub-radiating part 163.
  • the head end of the fourth radiating arm 152 may be connected to the fourth sub-coupling part 1812 of the fourth feeding structure 184, and the end of the fourth radiating arm 152 may be connected to the fourth sub-radiating part 164.
  • the end of the radiating arm close to the center line L5 may be the head end of the radiating arm, and the end of the radiating arm away from the center line L5 may be the end.
  • the head ends of the four radiating arms can be arranged around the centerline.
  • the feeding structure is arranged at the head end of the radiating arm, and the sub-radiating part is arranged at the end of the radiating arm, so that the overall effective length of the radiating unit formed by the sub-radiating part and the radiating arm can be longer, and the current path Longer, which is more conducive to extending the bandwidth of the radiating unit to low frequencies.
  • the head end and the end of a radiating arm can be located on a line of symmetry to maximize the effective length of the radiating arm.
  • the first end 1411 and the end 1412 of the first radiating arm 141 are both located on the first line of symmetry L1.
  • FIG. 12 is a schematic diagram of the second structure of the dual-polarized antenna according to an embodiment of the application.
  • the dual-polarized antenna 100 of the embodiment of the present application may further include a reflector 190.
  • the reflecting plate 190 may be located on the side of the first supporting plate 120 and the second supporting plate 130 away from the radiation plate 110, that is, the first supporting plate 120 and the second supporting plate 130 may be located between the radiation plate 110 and the reflecting plate 190 .
  • the reflective plate 190 may be directly or indirectly connected to the first support plate 120 and the second support plate 130, respectively.
  • the first support plate 120 and the second support plate 130 may be connected to the reflector 190 by welding, riveting, or the like. It can be understood that the embodiment of the present application does not limit the connection manner of the reflective plate 190 with the first support plate 120 and the second support plate 130.
  • the reflective plate 190 in the embodiment of the present application may include a bottom plate 191 and a side wall 192, and the side wall 192 may be arranged around an edge of the bottom plate 191.
  • the side wall 192 may be formed by extending the edge of the bottom plate 191 in a direction away from the bottom plate 191.
  • the side wall 192 may extend toward one side of the first supporting plate 120 and the second supporting plate 130; for another example, the side wall 192 may also It extends toward a direction away from the first support plate 120 and the second support plate 130.
  • the reflector 190 can concentrate the signals radiated by the first dipole unit 140 and the second dipole unit 150 to improve the gain.
  • the reflector 190 can be used as a ground plane. That is, the first sub-coupling portion 1711, the second sub-coupling portion 1712 of the aforementioned first balun feeding structure 170, and the third sub-coupling portion 1811, the fourth sub-coupling portion of the second balun feeding structure 180
  • the ground terminal of 1812 can be directly connected to the reflector 190 by welding, riveting, etc., to achieve grounding.
  • the size of the reflector 190 is smaller than half the wavelength of the current frequency, it will cause the first vibrator unit 140 and the second vibrator unit 150 to generate rear radiation. Therefore, the size (length, width) of the bottom plate 191 of the reflector 190 in actual production is generally Will be greater than half the wavelength, for example, greater than the half wavelength of the 2496MHz frequency-60mm ⁇ 60mm.
  • the reflector 190 of the embodiment of the present application is provided with side walls 192 on the edge of the bottom plate 191, which can suppress backward radiation. Therefore, the size of the bottom plate 191 of the reflector 190 of the embodiment of the present application can be less than half the wavelength, for example, at 2496 MHz.
  • the bottom can be 50mm ⁇ 50mm, which is obviously lower than the minimum size of related technologies. Therefore, the structure of the dual-polarized antenna 100 of the embodiment of the present application can reduce the size of the reflector 190 while ensuring that the dual-polarized antenna 100 has better radio frequency performance, thereby further miniaturizing the antenna.
  • the side wall 192 may surround one or more edges of the bottom plate 191, for example, four edges of the bottom plate 191 are surrounded in FIG. 13.
  • the extending direction of the side wall 192 may extend in a direction away from the radiation plate 110.
  • the side wall 192 may be formed by extending the edge of the bottom plate 191 in a direction away from the radiation plate 110.
  • the extending direction of the side wall 192 may extend toward the direction of the radiating plate 110.
  • the side wall 192 may be formed by extending the edge of the bottom plate 191 toward the direction of the radiating plate 110.
  • the side wall 192 when the side wall 192 is formed by the edge of the bottom plate 191 facing the direction of the radiating plate 110, on the one hand, in the thickness direction, the side wall 192 does not occupy additional space, and the miniaturization of the dual-polarized antenna 100 can be realized.
  • the distance between the side wall 192 and the reflector 190 is closer, and the side wall 192 can be coupled with the first vibrator unit 140 and the second vibrator unit 150, so that the first vibrator unit 140 and the second vibrator unit can be widened The bandwidth of the second vibrator unit 150.
  • the angle between the side wall 192 and the bottom plate 191 may be greater than or equal to 90 degrees but less than 180 degrees.
  • the included angle may be 90 degrees, 110 degrees, or 120 degrees.
  • the embodiment of the present application does not limit the specific angle of the included angle.
  • the side wall 192 forms an expanded shape, and the side wall 192 and the bottom plate 191 can reflect more backward radiation, so that the backward radiation can be better suppressed.
  • holes 193 can be reserved on the bottom plate 191 of the reflector 190 to facilitate the assembly of the reflector 190 and the customer front equipment 10.
  • the material of the reflector 190 can be stainless steel and nickel-plated, and the thickness of the reflector 190 can be 0.5mm. At this time, the reflector 190 can take into account the welding strength and structural strength to ensure the customer's front-end equipment 10 is complete. The reliability of the dual-polarized antenna 100 when dropped.
  • the size of the radiating surface of the dual-polarized antenna 100 of the embodiment of the present application (that is, the size of the first surface 111 of the radiating plate 110) can be 35mm ⁇ 35mm, which is much smaller than the 42mm ⁇ 42mm in the related art.
  • the size of the dual-polarization antenna 100 can be miniaturized.
  • the height of the first surface 111 (radiation surface) of the dual-polarized antenna 100 in the embodiment of the present application from the bottom plate 191 of the reflector 190 may be 15.2 mm, which is much smaller than 16.8 mm in the related art.
  • the volume of the dual-polarized antenna 100 Significantly reduced and easy to integrate into CPE devices with limited space.
  • the dual-polarized antenna 100 of the embodiment of the present application has a relatively long effective length, can transmit low-frequency, intermediate-frequency, and high-frequency radio signals, and can transmit the 3th Generation mobile communication technology (3G) Signal, the 4th Generation mobile communication technology (4G) signal, and the 5th Generation mobile communication technology (5G) signal.
  • the dual-polarized antenna 100 of the embodiment of the present application can cover 4G B41 (2496MHZ to 2690MHz), B42 (3400MHZ to 3600MHz), and 5G n41 (2515MHZ to 2675MHz), n77 (3300MHZ to 4200MHZ), n78 (3300MHZ to 3800MHZ), n79 (4400MHZ to 5000MHZ) and so on.
  • the dual-polarized antenna 100 of the embodiment of the present application has good isolation.
  • FIG. 14 is a graph of S21 parameters of the first dipole unit and the second dipole unit of the dual-polarized antenna according to an embodiment of the application. It can be seen from Figure 14 that the dual-polarized antenna 100 is between 2.49 GHz and 4.900 GHz, and the isolation between the first element 140 and the second element 150 of the dual-polarized antenna 100 is greater than 24 dB, which can be reduced by two. For the correlation between the two, when the dual-polarized antenna 100 is used for multiple-input multiple-output (MIMO) transmission, it can increase the rate of MIMO transmission.
  • MIMO multiple-input multiple-output
  • At least one of the radiation plate 110, the first support plate 120, and the second support plate 130 may be made of polytetrafluoroethylene (polytetrafluoroethylene, abbreviated as PTFE),
  • PTFE polytetrafluoroethylene
  • the radiation plate 110, the first support plate 120 and the second support plate 130 made of PTFE material can effectively reduce the dielectric loss at frequencies above 3.8 GHz, and can improve the radiation efficiency of the first vibrator unit 140 and the second vibrator unit 150.
  • FIG. 15 is a graph of radiation efficiency of a dual-polarized antenna provided by an embodiment of the application. It can be seen from FIG. 15 that when the frequency of the radio frequency signal transmitted by the dual-polarized antenna 100 is above 3.8 GHz, the measured efficiency of the dual-polarized antenna 100 can be greater than 70%. Therefore, the dual-polarized antenna 100 of the embodiment of the present application It can fully meet the transmission requirements of 5G signals.
  • the dual-polarized antenna 100 of the embodiment of the present application does not reduce the gain of the antenna on the basis of satisfying miniaturization.
  • FIG. 16 is the first type of three-dimensional radiation pattern of the dual-polarized antenna provided by an embodiment of the application.
  • Fig. 17 is a plane radiation pattern of the dual-polarized antenna shown in Fig. 16. It can be seen from FIG. 16 and FIG. 17 that when the dual-polarized antenna 100 transmits a radio frequency signal of 2.6 GHz, the gain of the dual-polarized antenna 100 can reach 7.3163 dB.
  • FIG. 18 is a second three-dimensional radiation pattern of the dual-polarized antenna provided by an embodiment of the application
  • FIG. 19 is a planar radiation pattern of the dual-polarized antenna shown in FIG. 18. It can be seen from FIGS. 18 and 19 that when the dual-polarized antenna 100 transmits a radio frequency signal with a frequency of 3.5 GHz, the gain of the dual-polarized antenna 100 can reach 7.6277 dB.
  • the dual-polarized antenna 100 when the distance between the radiation surface of the antenna and the reflector 190 is 1/4 ⁇ , its ideal gain is about 8.2dB.
  • the height of the first surface 111 and the bottom plate 191 of the reflector 190 is 15.2 mm, which is only 0.115 ⁇ , which is much smaller than 1 under the ideal gain. /4 ⁇ , and the gain of the dual-polarized antenna 100 of the embodiment of the present application can reach 7.3dB to 7.6dB, which is not much different from the ideal gain of 8.2dB. Therefore, the dual-polarized antenna 100 of the embodiment of the present application satisfies the requirements of miniaturization. On the basis of the optimization, the gain of the antenna is not reduced, and the dual-polarized antenna 100 of the embodiment of the present application still has better radiation performance.

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

Abstract

Antenne à double polarisation et équipement d'un local d'un client. L'antenne à double polarisation comprend une plaque de rayonnement, une première plaque de support, une seconde plaque de support et une partie de rayonnement d'antenne ; un premier ensemble oscillateur et un second ensemble oscillateur, présentant des directions de polarisation orthogonales l'une par rapport à l'autre, sont disposés sur la plaque de rayonnement ; la première plaque de support et la seconde plaque de support sont agencées de manière orthogonale et portent ensemble la plaque de rayonnement ; la partie de rayonnement d'antenne est située sur la première plaque de support et sur la seconde plaque de support, et connectée séparément et électriquement au premier ensemble oscillateur et au second ensemble oscillateur.
PCT/CN2021/087818 2020-06-02 2021-04-16 Antenne à double polarisation et équipement de local de client WO2021244158A1 (fr)

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