5G antenna device

Abstract

The present invention discloses a 5G antenna device, including an antenna body and a dielectric floor, wherein the antenna body includes four metal sheets, which are orthogonally distributed on the dielectric floor around a center, and the four metal sheets include two first metal sheets arranged at a diagonal angle and two second metal sheets arranged at another diagonal angle, wherein the two first metal sheets cooperate to form a first antenna unit, and the two second metal sheets cooperate to form a second antenna unit; wherein a feeding structure is provided on the dielectric floor, and the metal sheets have medium-high frequency branches and low-frequency branches, and the low-frequency branches of the four metal sheets are bent downward and arranged at the periphery of the medium-high frequency branches of the four metal sheets, and one end of the medium-high frequency branches of the four metal sheets close to the center is bent downward and electrically connected to the feeding structure. The present invention can achieve a performance of more than 10dB of isolation between the first antenna unit and the second antenna unit; and can also achieve low-frequency performance when the overall outline size is less than one-fourth of the low-frequency wavelength.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular, to a 5G antenna device. Background Art

[0002] With the development of automobile intelligence, the demand for high-speed and stable data transmission is increasing. The emergence of 5G technology provides a faster and more reliable way of communication for automobiles. As an important device connecting automobiles with 5G networks, vehicle-mounted 5G antennas can achieve high-speed data transmission, provide more diversified communication services for automobiles, and meet the communication needs of automobiles.

[0003] Existing 5G antennas generally solve the isolation problem by increasing the distance between multiple antenna units or using decoupling technology, but the distance will increase the size, and the decoupling technology will cause the antenna impedance to deteriorate, sacrificing antenna efficiency to improve isolation. Summary of the invention

[0004] The object of the present invention is to provide a 5G antenna device to solve the technical problem that the existing 5G antenna increases the isolation by increasing the distance between multiple antenna units, resulting in a larger overall size of the antenna.

[0005] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] The present invention provides a 5G antenna device, including an antenna body and a dielectric floor, the antenna body including four metal sheets, the four metal sheets are orthogonally distributed on the dielectric floor around a center, the four metal sheets include two first metal sheets arranged at one diagonal angle and two second metal sheets arranged at another diagonal angle, the two first metal sheets cooperate to form a first antenna unit, and the two second metal sheets cooperate to form a second antenna unit; wherein a feeding structure is provided on the dielectric floor, the metal sheets have medium and high frequency branches and low frequency branches, the low frequency branches of the four metal sheets are bent downward and arranged on the periphery of the medium and high frequency branches of the four metal sheets, and one end of the medium and high frequency branches of the four metal sheets close to the center is bent downward and electrically connected to the feeding structure.

[0007] In an embodiment of the present invention, a first bending edge is provided between the low-frequency branch and the medium- and high-frequency branch of the first metal sheet, and a second bending edge is provided between the low-frequency branch and the medium- and high-frequency branch of the second metal sheet, and the first bending edge and the second bending edge are vertically distributed.

[0008] In an embodiment of the present invention, the mid-to-high frequency branches of the first metal sheet and the second metal sheet both include a first horizontal branch and a second horizontal branch arranged parallel to the dielectric floor and a first vertical branch arranged perpendicular to the dielectric floor, the inner ends of the first horizontal branches are respectively connected to the inner ends of the second horizontal branches and the top ends of the first vertical branches, the outer ends of the first horizontal branches are connected to the low-frequency branches, and the outer ends of the second horizontal branches extend to above the low-frequency branches; wherein, the mid-to-high frequency branches of the first metal sheet also include a third horizontal branch, the third horizontal branch is connected to the inner ends of the first horizontal branches and is located between the first horizontal branches of the first metal sheet and the second horizontal branches of the second metal sheet; the mid-to-high frequency branches of the second metal sheet also include a second vertical branch, the second vertical branch is connected to the first vertical branch and is located in the lower area between the third horizontal branch and the second horizontal branch of the second metal sheet.

[0009] In an embodiment of the present invention, the low-frequency branches of the first metal sheet and the second metal sheet both include a third vertical branch and a fourth vertical branch arranged perpendicular to the dielectric floor, the top of the third vertical branch is connected to the outer end of the first horizontal branch, and the fourth vertical branch is connected to the third vertical branch and is vertically bent toward a side close to the second horizontal branch; wherein, the low-frequency branches of the first metal sheet also include a fourth horizontal branch arranged parallel to the dielectric floor, the fourth horizontal branch is connected to the bottom end of the fourth vertical branch of the first metal sheet and is located below the first horizontal branch and the second horizontal branch of the first metal sheet; the low-frequency branches of the second metal sheet also include a fifth horizontal branch, the fifth horizontal branch is connected to the top of the fourth vertical branch of the second metal sheet and is located between the second horizontal branch of the second metal sheet and the first horizontal branch of the first metal sheet.

[0010] In an embodiment of the present invention, there is a distance between one end of the first metal sheet connected to the feeding structure and one end of the second metal sheet connected to the feeding structure; wherein the distance is 4 mm-5 mm.

[0011] In an embodiment of the present invention, the dielectric floor is a PCB board, and the copper layers laid on the upper surface and the lower surface of the PCB board form the feeding structure.

[0012] In an embodiment of the present invention, the 5G antenna device further includes a plurality of RF coaxial lines, and the RF coaxial lines are electrically connected to the feeding structure.

[0013] In an embodiment of the present invention, the feeding structure includes two first upper feed plates, two second upper feed plates, two first lower feed plates and two second lower feed plates, the two first upper feed plates and the two second upper feed plates are orthogonally distributed on the upper surface of the dielectric floor, the two first lower feed plates and the two second lower feed plates are orthogonally distributed on the lower surface of the dielectric floor, the bottom ends of the two medium and high frequency branches of the first antenna unit are electrically connected to the corresponding first upper feed plates and the first lower feed plates, respectively, and the bottom ends of the two medium and high frequency branches of the second antenna unit are electrically connected to the corresponding second upper feed plates and the second lower feed plates, respectively.

[0014] In an embodiment of the present invention, a magnetic ring is sleeved on one end of the radio frequency coaxial line connected to the feeding structure.

[0015] In an embodiment of the present invention, the 5G antenna device further includes a shell, the dielectric floor and the antenna body are accommodated in the shell, and one end of the RF coaxial line extends into the shell and is electrically connected to the feeding structure; the 5G antenna device further includes a mounting bracket, and the shell is installed in the car through the mounting bracket.

[0016] The characteristics and advantages of the present invention are:

[0017] The 5G antenna device of the present invention can cooperate to form a first antenna unit and a second antenna unit by distributing four metal sheets orthogonally on a dielectric floor, so that the first antenna unit and the second antenna unit are perpendicular to each other in the oscillation directions of electromagnetic waves in the same frequency band, so that the isolation degree can reach a performance of more than 10dB; in addition, by bending the low-frequency branches of the four metal sheets downward and arranging them on the periphery of the medium and high-frequency branches of the four metal sheets, the low-frequency performance can be achieved when the overall outline size of the antenna body is less than one-quarter of the low-frequency wavelength; therefore, the present invention can meet the performance requirements of the antenna while achieving miniaturization, and is simple to manufacture and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a disassembled diagram of the antenna body in the present invention.

[0020] Figure 2 It is a three-dimensional diagram of the antenna body in the present invention.

[0021] Figure 3This is a test diagram of the isolation between the first antenna unit and the second antenna unit in the present invention.

[0022] Figure 4 This is a standing wave ratio test diagram of the first antenna unit in the present invention.

[0023] Figure 5 This is a standing wave ratio test diagram of the second antenna unit in the present invention.

[0024] Figure 6 It is the gain diagram of the first antenna unit and the second antenna unit in the present invention.

[0025] Figure 7 It is a schematic structural diagram of the upper surface of the dielectric floor in the present invention.

[0026] Figure 8 It is a schematic structural diagram of the lower surface of the dielectric floor in the present invention.

[0027] Fig. 9 This is a disassembly diagram of the 5G antenna device in the present invention.

[0028] In the figure:

[0029] 1. Antenna body;

[0030] 11. metal sheet; 111. first metal sheet; 112. second metal sheet; 113. first bending edge; 114. second bending edge;

[0031] 12, medium and high frequency branches; 121, first horizontal branches; 122, second horizontal branches; 123, first vertical branches; 124, third horizontal branches; 125, second vertical branches;

[0032] 13, low frequency branch; 131, third vertical branch; 132, fourth vertical branch; 133, fourth horizontal branch; 134, fifth horizontal branch;

[0033] 2. Dielectric floor; 21. Plug welding hole;

[0034] 3. Feed structure; 31. front first upper feed sheet; 31', rear first upper feed sheet; 311. upper feed branch; 32. left second upper feed sheet; 32', right second upper feed sheet; 33. front first lower feed sheet; 33', rear first lower feed sheet; 331. first lower feed branch; 332. first convex portion; 333. first groove; 334. first welding portion; 335. second welding portion; 34. left second lower feed sheet; 34', right second lower feed sheet; 341. second lower feed branch; 342. second convex portion; 343. second groove; 344. third welding portion; 345. fourth welding portion;

[0035] 4. RF coaxial cable;

[0036] 5. Magnetic ring;

[0037] 6. housing; 61. upper cover; 62. lower housing; 63. first fastener;

[0038] 7. Mounting bracket; 71. Second fastener;

[0039] 8. Electrical connector. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 and Figure 2 As shown, the present invention provides a 5G antenna device, including an antenna body 1 and a dielectric floor 2, the antenna body 1 includes four metal sheets 11, the four metal sheets 11 are orthogonally distributed on the dielectric floor 2, the four metal sheets 11 include two first metal sheets 111 arranged at one diagonal angle and two second metal sheets 112 arranged at another diagonal angle, the two first metal sheets 111 cooperate to form a first antenna unit, and the two second metal sheets 112 cooperate to form a second antenna unit; wherein, a feeding structure 3 is provided on the dielectric floor 2, the metal sheet 11 has medium and high frequency branches 12 and low frequency branches 13, the low frequency branches 13 of the four metal sheets 11 are bent downward and arranged on the periphery of the medium and high frequency branches 12 of the four metal sheets 11, and one end close to the center of the medium and high frequency branches 12 of the four metal sheets 11 is bent downward and electrically connected to the feeding structure 3.

[0042] Combination Figure 3 As shown, the 5G antenna device of the present invention can cooperate to form a first antenna unit and a second antenna unit by orthogonally distributing four metal sheets 11 on a dielectric floor 2, so that the first antenna unit and the second antenna unit are perpendicular to each other in the oscillation directions of electromagnetic waves in the same frequency band, so that the isolation can reach a performance of more than 10 dB; in addition, by bending the low-frequency branches 13 of the four metal sheets 11 downward and arranging them on the periphery of the medium- and high-frequency branches 12 of the four metal sheets 11, the performance of the low-frequency band can be achieved when the overall outline size of the antenna body 1 is less than one-fourth of the low-frequency wavelength; therefore, the present invention can meet the performance requirements of the antenna while achieving miniaturization, and is simple to manufacture and easy to install.

[0043] Combination Figure 4 , Figure 5 as well as Figure 6As shown, in the embodiment of the present invention, by designing four metal sheets 11, the first antenna unit and the second antenna unit constitute two 5G antenna units, which can achieve impedance matching of the first antenna unit and the second antenna unit in the low frequency band of 698 MHz to 960 MHz, the medium frequency band of 1427 MHz to 2690 MHZ, and the high frequency band of 3300 MHz to 5000 MHz, and can obtain better gain. Among them, the design principle of a single antenna unit is based on a symmetrical dipole antenna structure, and the radiator composed of the medium and high frequency branches 12 and the low frequency branches 13 of the two metal sheets 11 of a single antenna unit adopts a symmetrical structural design, and its antenna performance is achieved through deformation design, shape design, size design and coupling.

[0044] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a first bending edge 113 is provided between the low-frequency branch 13 and the medium-high frequency branch 12 of the first metal sheet 111, and a second bending edge 114 is provided between the low-frequency branch 13 and the medium-high frequency branch 12 of the second metal sheet 112. The first bending edge 113 and the second bending edge 114 are vertically distributed, so that the bending edges between the low-frequency branches 13 and the medium-high frequency branches 12 of the four metal sheets 11 also maintain an orthogonal distribution, thereby further improving the isolation between the first antenna unit and the second antenna unit.

[0045] like Figure 1 and Figure 2 As shown, in the embodiment of the present invention, there is a spacing J between one end of the first metal sheet 111 connected to the feed structure 3 and one end of the second metal sheet 112 connected to the feed structure 3. The spacing J is formed by spacing the first metal sheet 111 and the second metal sheet 112, and the impedance of the first antenna unit and the second antenna unit in the intermediate frequency band, that is, the capacitance and inductance, can be adjusted by adjusting the spacing J, thereby improving the bandwidth of the 5G antenna device; and the four metal sheets 11 can be spatially coupled in performance, thereby ensuring the intermediate frequency performance of the 5G antenna device.

[0046] Specifically, after feeding the medium and high frequency branches 12 of each metal sheet 11 through the feeding structure 3, the medium and high frequency electromagnetic waves generated by the first antenna unit and the second antenna unit can be radiated from the interval area between the four metal sheets 11. In this embodiment, the length of the antenna body 1 is slightly less than 80mm, the width is slightly less than 60mm, the height is slightly less than 15mm, and the spacing J is 4mm-5mm. Optionally, the spacing J can be adjusted according to the design requirements of the outer contour size of the antenna body 1.

[0047] like Figure 1 and Figure 2As shown, in the embodiment of the present invention, the medium and high frequency branches 12 of the first metal sheet 111 and the second metal sheet 112 include a first horizontal branch 121 and a second horizontal branch 122 arranged parallel to the dielectric floor 2 and a first vertical branch 123 arranged perpendicular to the dielectric floor 2, the inner end of the first horizontal branch 121 is respectively connected to the inner end of the second horizontal branch 122 and the top of the first vertical branch 123, the outer end of the first horizontal branch 121 is connected to the low frequency branch 13, and the outer end of the second horizontal branch 122 extends to the top of the low frequency branch 13; In the embodiment, the mid-high frequency branch 12 of the first metal sheet 111 further includes a third horizontal branch 124, which is connected to the inner end of the first horizontal branch 121 and is located between the first horizontal branch 121 of the first metal sheet 111 and the second horizontal branch 122 of the second metal sheet 112; the mid-high frequency branch 12 of the second metal sheet 112 further includes a second vertical branch 125, which is connected to the first vertical branch 123 and is located in the lower area between the third horizontal branch 124 and the second horizontal branch 122 of the second metal sheet 112. By designing the mid-high frequency branches 12 of the first metal sheet 111 and the second metal sheet 112, the first antenna unit and the second antenna unit have good antenna performance in the mid-frequency band of 1427MHz to 2690MHZ and the high-frequency band of 3300MHz to 5000MHz.

[0048] Among them, the second horizontal branches 122 of the two first metal sheets 111 and the two second metal sheets 112 constitute the main radiation branches at a frequency of 1427 MHz; the second vertical branches 125 of the two first metal sheets 111 are the main radiation branches of the first antenna unit at a frequency of 1710 MHz; the third horizontal branches 124 of the two second metal sheets 112 are the main radiation branches of the second antenna unit at a frequency of 1710 MHz.

[0049] like Figure 1 and Figure 2As shown, in the embodiment of the present invention, the low-frequency branches 13 of the first metal sheet 111 and the second metal sheet 112 both include a third vertical branch 131 and a fourth vertical branch 132 arranged perpendicular to the dielectric floor 2, the top of the third vertical branch 131 is connected to the outer end of the first horizontal branch 121, and the fourth vertical branch 132 is connected to the third vertical branch 131 and is vertically bent toward a side close to the second horizontal branch 122; wherein the low-frequency branches 13 of the first metal sheet 111 also include a fourth horizontal branch 132 arranged parallel to the dielectric floor 2. The fourth horizontal branch 133 is connected to the bottom end of the fourth vertical branch 132 of the first metal sheet 111 and is located below the first horizontal branch 121 and the second horizontal branch 122 of the first metal sheet 111; the low-frequency branch 13 of the second metal sheet 112 also includes a fifth horizontal branch 134, which is connected to the top end of the fourth vertical branch 132 of the second metal sheet 112 and is located between the second horizontal branch 122 of the second metal sheet 112 and the first horizontal branch 121 of the first metal sheet 111. By designing the low-frequency branches 13 of the first metal sheet 111 and the second metal sheet 112, the first antenna unit and the second antenna unit cooperate to have good antenna performance in the low frequency band of 698MHz to 960MHz. Among them, the fourth vertical branch 132 and the fourth horizontal branch 133 of the two first metal sheets 111 are the main radiation branches of the first antenna unit in the low frequency band of 698 MHz to 960 MHz; the fifth horizontal branch 134 of the two second metal sheets 112 is the main radiation branch of the second antenna unit in the low frequency band of 698 MHz to 960 MHz.

[0050] In addition, the shape and size of each branch have an impact on the performance of the antenna. By changing the shape or size of each branch, the path of the current will be changed, causing the resonance of the antenna to change and the performance to change accordingly.

[0051] Combination Figure 7 and Figure 8 As shown, in the embodiment of the present invention, the feeding structure 3 includes two first upper feeding plates, two second upper feeding plates, two first lower feeding plates and two second lower feeding plates, the two first upper feeding plates and the two second upper feeding plates are orthogonally distributed on the upper surface of the dielectric floor 2, the two first lower feeding plates and the two second lower feeding plates are orthogonally distributed on the lower surface of the dielectric floor 2, the bottom ends of the two medium and high frequency branches 12 of the first antenna unit are respectively electrically connected to the corresponding first upper feeding plates and the first lower feeding plates, and the bottom ends of the two medium and high frequency branches 12 of the second antenna unit are respectively electrically connected to the corresponding second upper feeding plates and the second lower feeding plates. Direct feeding is performed through the two first upper feeding plates, the two second upper feeding plates, the two first lower feeding plates and the two second lower feeding plates, thereby exciting the first antenna unit and the second antenna unit to generate electromagnetic waves of the required frequency band.

[0052] For ease of description, the present invention defines the two first upper feed plates as the front first upper feed plate 31 and the rear first upper feed plate 31', the two second upper feed plates as the left second upper feed plate 32 and the right second upper feed plate 32', the two first lower feed plates as the front first lower feed plate 33 and the rear first lower feed plate 33', and the two second lower feed plates as the left second lower feed plate 34 and the right second lower feed plate 34'.

[0053] Specifically, an upper feed branch 311 is formed at one end of the front first upper feed plate 31 facing the rear first upper feed plate 31', and the upper feed branch 311 is located between the left second upper feed plate 32 and the right second upper feed plate 32'; the front first lower feed plate 33 corresponding to the front first upper feed plate 31 is divided into its main body and a first lower feed branch 331; a second lower feed branch 341 is formed at one end of the left second lower feed plate 34 facing the right second lower feed plate 34', and the second lower feed branch 341 is located between the main body of the front first lower feed plate 33 and its first lower feed branch 331; a first protrusion 332 is provided at one end of the first lower feed branch 331 facing the rear first lower feed plate 33', and the rear first lower feed plate 33' is provided with a first groove 333 that is gap-matched with the first protrusion 332. A second convex portion 342 is disposed at one end of the second lower feeding branch 341 facing the right second lower feeding plate 34 ′, and a second groove 343 is disposed on the right second lower feeding plate 34 ′ to be gap-matched with the second convex portion 342 .

[0054] Combination Figure 2 and Fig. 9 As shown, in the embodiment of the present invention, the 5G antenna device further includes a plurality of RF coaxial lines 4, and the RF coaxial lines 4 are electrically connected to the feeding structure 3. In addition, a magnetic ring 5 is sleeved on one end of the RF coaxial line 4 connected to the feeding structure 3. Due to the small size of the antenna, when in use, interference current will appear on the surface of the RF coaxial line 4, affecting the performance of the low frequency band 698MHz-960MHz. By providing the magnetic ring 5, the interference current can be filtered out, so that the low-frequency standing waves of the first antenna unit and the second antenna unit are in a normal state (such as Figure 4 and Figure 5 The plurality of radio frequency coaxial lines 4 are connected to the terminal processing device via an electrical connector 8.

[0055] Specific, combined Figure 7 , Figure 8 as well as Fig. 9As shown, the dielectric floor 2 is a PCB board, preferably a FR-4 PCB board. The copper layers laid on the upper and lower surfaces of the dielectric floor 2 form a feeding structure 3, so that the first antenna unit and the second antenna unit can be fed simultaneously. The bottom ends of the medium and high frequency branches 12 of each metal sheet 11 are provided with solder feet, and the dielectric floor 2 is provided with a plurality of soldering holes 21 for inserting solder feet and welding with the solder feet. The shape of the dielectric floor 2 is square, and four groups of soldering holes 21 are arranged near the four side edges of the dielectric floor 2. The side length of the dielectric floor 2 is 30.5 mm and the thickness is 1 mm. The number of RF coaxial lines 4 is two, which are defined as the first RF coaxial line and the second RF coaxial line respectively. The rear first lower feed plate 33' is provided with a first welding portion 334 welded to the braided layer of the first RF coaxial line, and the first protrusion 332 is provided with a second welding portion 335 welded to the core wire of the first RF coaxial line; the right second lower feed plate 34' is provided with a third welding portion 344 welded to the braided layer of the second RF coaxial line, and the second protrusion 342 is provided with a fourth welding portion 345 welded to the core wire of the second RF coaxial line.

[0056] like Fig. 9 As shown, in an embodiment of the present invention, the 5G antenna device also includes a shell 6, the dielectric floor 2 and the antenna body 1 are accommodated in the shell 6, and one end of the RF coaxial line 4 extends into the shell 6 and is electrically connected to the feeding structure 3; the 5G antenna device also includes a mounting bracket 7, and the shell 6 is installed in the car through the mounting bracket 7.

[0057] Specifically, the shell 6 is generally rectangular in shape, and its outer contour is slightly larger than the outer contour of the antenna body 1. In this embodiment, the shell 6 is 80 mm in length, 60 mm in width, and 15 mm in height. The shell 6 includes an upper cover 61 and a lower shell 62, and the upper cover 61 covers the lower shell 62 and is connected by a plurality of first fasteners 63. The mounting bracket 7 is mounted on the bottom surface of the lower shell 62 by a plurality of second fasteners 71.

[0058] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A 5G antenna device, characterized in that: It comprises an antenna body and a dielectric floor, wherein the antenna body comprises four metal sheets, the four metal sheets are orthogonally distributed on the dielectric floor around a center, the four metal sheets comprise two first metal sheets arranged at one diagonal angle and two second metal sheets arranged at another diagonal angle, the two first metal sheets cooperate to form a first antenna unit, and the two second metal sheets cooperate to form a second antenna unit; Wherein, a feeding structure is provided on the dielectric floor, the metal sheet has medium-high frequency branches and low-frequency branches, the low-frequency branches of four metal sheets are bent downward and arranged on the periphery of the medium-high frequency branches of four metal sheets, and one end of the medium-high frequency branches of four metal sheets close to the center is bent downward and electrically connected to the feeding structure; The medium and high frequency branches of the first metal sheet and the second metal sheet include a first horizontal branch and a second horizontal branch arranged parallel to the dielectric floor and a first vertical branch arranged perpendicular to the dielectric floor, the bottom end of the first vertical branch is electrically connected to the feeding structure, the inner end of the first horizontal branch is respectively connected to the inner end of the second horizontal branch and the top of the first vertical branch, the outer end of the first horizontal branch is connected to the low frequency branch, and the outer end of the second horizontal branch extends above the low frequency branch.

2. The 5G antenna device according to claim 1, characterized in that: A first bending edge is provided between the low-frequency branch and the medium-high frequency branch of the first metal sheet, a second bending edge is provided between the low-frequency branch and the medium-high frequency branch of the second metal sheet, and the first bending edge and the second bending edge are vertically distributed.

3. The 5G antenna device according to claim 1, wherein: The medium and high frequency branches of the first metal sheet further include a third horizontal branch, the third horizontal branch is connected to the inner end of the first horizontal branch and is located between the first horizontal branch of the first metal sheet and the second horizontal branch of the second metal sheet; The mid-high frequency branches of the second metal sheet further include a second vertical branch, which is connected to the first vertical branch and is located in a lower area between the third horizontal branch and the second horizontal branch of the second metal sheet.

4. The 5G antenna device according to claim 3, characterized in that: The low-frequency branches of the first metal sheet and the second metal sheet each include a third vertical branch and a fourth vertical branch arranged perpendicular to the dielectric floor, the top of the third vertical branch is connected to the outer end of the first horizontal branch, and the fourth vertical branch is connected to the third vertical branch and is vertically bent toward a side close to the second horizontal branch; Wherein, the low-frequency branch of the first metal sheet further includes a fourth horizontal branch arranged parallel to the dielectric floor, the fourth horizontal branch is connected to the bottom end of the fourth vertical branch of the first metal sheet and is located below the first horizontal branch and the second horizontal branch of the first metal sheet; The low-frequency branches of the second metal sheet further include a fifth horizontal branch, which is connected to the top of the fourth vertical branch of the second metal sheet and is located between the second horizontal branch of the second metal sheet and the first horizontal branch of the first metal sheet.

5. The 5G antenna device according to claim 1, wherein: There is a distance between one end of the first metal sheet connected to the feeding structure and one end of the second metal sheet connected to the feeding structure; Wherein, the spacing is 4mm-5mm.

6. The 5G antenna device according to claim 1, wherein: The dielectric floor is a PCB board, and the copper layers laid on the upper surface and the lower surface of the PCB board form the feeding structure.

7. The 5G antenna device according to claim 1, characterized in that: The 5G antenna device also includes a plurality of RF coaxial lines, which are electrically connected to the feeding structure.

8. The 5G antenna device according to claim 7, characterized in that: The feeding structure includes two first upper feed plates, two second upper feed plates, two first lower feed plates and two second lower feed plates. The two first upper feed plates and the two second upper feed plates are orthogonally distributed on the upper surface of the dielectric floor, the two first lower feed plates and the two second lower feed plates are orthogonally distributed on the lower surface of the dielectric floor, the bottom ends of the two medium and high frequency branches of the first antenna unit are electrically connected to the corresponding first upper feed plates and the first lower feed plates, respectively, and the bottom ends of the two medium and high frequency branches of the second antenna unit are electrically connected to the corresponding second upper feed plates and the second lower feed plates, respectively.

9. The 5G antenna device according to claim 8, characterized in that: One end of the radio frequency coaxial line connected to the feeding structure is sleeved with a magnetic ring.

10. The 5G antenna device according to claim 7, characterized in that: The 5G antenna device also includes a shell, the dielectric floor and the antenna body are accommodated in the shell, and one end of the RF coaxial line extends into the shell and is electrically connected to the feeding structure; the 5G antenna device also includes a mounting bracket, and the shell is installed in the car through the mounting bracket.

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