A base station

Abstract

The embodiment of the present application relates to the technical field of wireless communication, and discloses a base station, which comprises a metal body, at least two antennas and a switching switch assembly, the metal body is provided with at least two corner portions, the directions of the at least two corner portions are different from each other, one antenna is arranged in one corner portion, and one corner portion is used for reflecting signals radiated by one antenna, so that the combination of the signal directions radiated by the at least two antennas can be omni-directionally covered in a horizontal plane; the at least two antennas are connected with the switching switch assembly, so that the antenna with the strongest signal in the at least two antennas works. Through the above manner, under the premise that the base station omni-directionally covers signals, the embodiment of the present application is beneficial to reducing the overall volume of the base station.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a base station. Background Technology

[0002] When drones are performing missions, they need to communicate with ground equipment so that ground base stations can obtain information about the drones. Since drones can fly in any direction in the sky, the signals radiated by the antennas in the base stations need to cover all directions above the ground in order to ensure that the base stations can maintain communication with the drones at all times.

[0003] During the implementation of this invention, the inventors discovered that the distance between the drone and the base station is generally very far. In this case, if the antenna is to achieve omnidirectional signal coverage, the antenna needs to be designed to be very long, which is not conducive to the miniaturization design of the base station. Summary of the Invention

[0004] The main technical problem solved by the embodiments of the present invention is to provide a base station that can provide omnidirectional signal coverage above the ground and is conducive to the miniaturization design of the base station.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of the present invention is as follows: a base station is provided, including a metal body, at least two antennas and a switching assembly. The metal body is provided with at least two corner sections, and the orientation of the at least two corner sections is different from that of each other. An antenna is provided at one corner section, and the corner section of the antenna is used to reflect the signal radiated by the antenna, so that the combination of the signal directions radiated by the at least two antennas can provide omnidirectional coverage on the horizontal plane. At least two antennas are connected to the switching assembly so that the antenna with the strongest signal among the at least two antennas is working.

[0006] Optionally, the metal body includes a support frame, a metal compartment, and two metal panels. The metal compartment and the two metal panels are all mounted on the support frame. The two metal panels are located at both ends of the metal compartment. Four corner sections are formed between the metal compartment and the two metal panels, and the four corner sections have different orientations. There are four antennas, and one antenna is set at one corner section so that the corner section can reflect the signal radiated by the antenna. The combination of the signal directions radiated by the four antennas can provide omnidirectional coverage on the horizontal plane.

[0007] Optionally, the length directions of at least two antennas are not perpendicular to the horizontal plane.

[0008] Optionally, the antenna includes an antenna frame and a first radiating module. The antenna frame is located at a corner, and the first radiating module is located on the antenna frame. The first radiating module is connected to a switching assembly and is used to radiate signals in a first frequency band and a second frequency band.

[0009] Optionally, the first radiating module includes a first dielectric substrate, a first feed line, and a first radiating component. The first dielectric substrate is mounted on an antenna frame, and the first radiating component is disposed on a first surface of the first dielectric substrate, with the first surface facing the corner of the corner. One end of the first feed line is electrically connected to the first radiating component, and the other end of the feed line is connected to a switching component. The first radiating component is used to radiate a first frequency band signal, and the metal wall at the corner has a reflective effect on the first frequency band signal to improve the strength of the first frequency band signal above the metal body.

[0010] Optionally, the first dielectric substrate is provided with a first power supply section and a second power supply section, which are separated from each other. The first feed line includes a first inner conductor and a first outer conductor, which are insulated from each other. The first inner conductor is electrically connected to the first power supply section, and the first outer conductor is electrically connected to the second power supply section. The first radiating component is connected to the first power supply section and the second power supply section respectively.

[0011] Optionally, the first radiating component includes a first radiating arm, a second radiating arm, and a third radiating arm. One end of the first radiating arm is connected to a first feed unit, and one end of both the second and third radiating arms is connected to a second feed unit. The first, second, and third radiating arms are used together to radiate signals in the first frequency band.

[0012] Optionally, the first radiating assembly further includes a first branch, a second branch, and a third branch, wherein the first branch is connected to the other end of the first radiating arm, the second branch is connected to the other end of the second radiating arm, and the third branch is connected to the other end of the third radiating arm.

[0013] Optionally, the first radiation module further includes a second radiation assembly, which includes a fourth radiation arm, a fifth radiation arm, a sixth radiation arm, and a seventh radiation arm. One end of the fourth and fifth radiation arms is connected to the first feed section, and the fourth and fifth radiation arms are located on opposite sides of the first radiation arm. One end of the sixth and seventh radiation arms is connected to the second feed section, and the sixth radiation arm is located on the side of the second radiation arm away from the third radiation arm, and the seventh radiation arm is located on the side of the third radiation arm away from the second radiation arm. The second, fourth, fifth, sixth, and seventh radiation arms are used together to radiate the second frequency band signal, and the metal wall at the corner has a reflective effect on the second frequency band signal to improve the intensity of the second frequency band signal above the metal body.

[0014] Optionally, the antenna also includes a duplexer assembly, a feed line bus, and a second radiating module. The second radiating module is mounted on the antenna frame. Both the first and second radiating modules are connected to the duplexer assembly. One end of the feed line bus is connected to the duplexer assembly, and the other end of the feed line bus is connected to the switching assembly. The second radiating module is used to radiate third-band signals and fourth-band signals.

[0015] Optionally, the second radiating module includes a second dielectric substrate, a second feed line, and a third radiating component. The second dielectric substrate is mounted on the antenna frame, and the third radiating component is disposed on the second surface of the second dielectric substrate, with the second surface facing outward from the opening at the corner. One end of the second feed line is connected to the third radiating component, and the other end of the second feed line is connected to the duplexer component. The third radiating component is used to radiate signals in the third frequency band.

[0016] Optionally, the second dielectric substrate is provided with a third feed section and a fourth feed section, which are spaced apart. The second feed line includes a second inner conductor and a second outer conductor. The second inner conductor is electrically connected to the third feed section, and the second outer conductor is electrically connected to the fourth feed section. Both the third and fourth feed sections are connected to the third radiating component.

[0017] Optionally, the third radiating component includes an eighth radiating arm and a ninth radiating arm. One end of the eighth radiating arm is connected to the third feed section, and one end of the ninth radiating arm is connected to the fourth feed section. The eighth and ninth radiating arms are used together to radiate the third frequency band signal.

[0018] Optionally, the second radiation module further includes a reflector disposed on the second dielectric plate, and the projections of the eighth and ninth radiation arms fall within the projection of the reflector in the length direction perpendicular to the eighth radiation arm. The reflector is used to reflect the third frequency band signal radiated by the third radiation component toward the opening at the corner.

[0019] Optionally, the second radiation module further includes a director disposed on the second dielectric plate, and the third radiation assembly is located between the reflector and the director.

[0020] Optionally, the second radiation module further includes a fourth radiation component, which includes a tenth radiation arm and an eleventh radiation arm. One end of the tenth radiation arm is connected to the third feed section, and the eleventh radiation arm is connected to the fourth feed section. The tenth and eleventh radiation arms are used together to radiate the fourth frequency band signal. The reflector is also used to reflect the fourth frequency band signal radiated by the fourth radiation component toward the opening of the corner section.

[0021] The beneficial effects of this invention are as follows: Unlike the prior art, this invention provides at least two corner sections with different orientations on the metal body, and places an antenna at one corner section. This allows the combination of the signal directions radiated by the at least two antennas to provide omnidirectional coverage on the horizontal plane. Furthermore, both antennas are connected to a switching assembly, which enables the antenna with the strongest signal among the at least two antennas to operate. This achieves omnidirectional coverage of the base station's radiated signal on the horizontal plane while significantly reducing the size of a single antenna, which is beneficial for reducing the overall volume of the base station. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in specific embodiments of the present invention or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the base station structure provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram showing the connection relationship between multiple switching components and multiple antennas in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the metal body in an embodiment of the present invention from a first-view perspective;

[0026] Figure 4 This is a schematic diagram of the metal body in an embodiment of the present invention from a second perspective;

[0027] Figure 5 This is a schematic diagram of the antenna structure in an embodiment of the present invention;

[0028] Figure 6 This is an exploded view of the antenna in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the first radiation module in an embodiment of the present invention;

[0030] Figure 8 yes Figure 7 An enlarged view of the area shown in section A;

[0031] Figure 9 This is a schematic diagram of the structure of the second radiation module in an embodiment of the present invention;

[0032] Figure 10 yes Figure 9 An enlarged view of the area shown in section B;

[0033] Figure 11 This is a schematic diagram of the structure of the second radiation module when the first connecting part and the second connecting part are bent in an embodiment of the present invention;

[0034] Figure 12 This is an S11 parameter diagram of the base station in the first frequency band signal and the second frequency band signal provided in an embodiment of the present invention;

[0035] Figure 13 This is the radiation pattern of the first frequency band signal of the base station on the horizontal plane provided in the embodiments of the present invention;

[0036] Figure 14 This is the radiation pattern of the second frequency band signal of the base station on the horizontal plane provided in the embodiments of the present invention;

[0037] Figure 15 This is a diagram of S11 parameters of the base station in the third frequency band and the fourth frequency band provided in an embodiment of the present invention;

[0038] Figure 16 This is the radiation pattern of the third frequency band signal of the base station on the horizontal plane provided in the embodiments of the present invention;

[0039] Figure 17 This is the radiation pattern of the fourth frequency band signal of the base station on the horizontal plane provided in the embodiment of the present invention. Detailed Implementation

[0040] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0042] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] Please see Figure 1 and Figure 2The base station 100 includes a metal body 1, a switching assembly 3, and at least two antennas 2. The at least two antennas 2 are both mounted on the metal body 1 and face different directions, so that the combination of the signal directions radiated by the at least two antennas 2 can provide omnidirectional coverage in the horizontal plane. The at least two antennas 2 are both connected to the switching assembly 3, which controls the at least two antennas 2 to ensure that the antenna with the strongest signal strength operates, guaranteeing a sufficiently long signal transmission distance for the base station 100.

[0044] The metal body 1 includes a support 11, a metal compartment 12, and two metal panels 13. The metal compartment 12 and the two metal panels 13 are both mounted on the support 11. The two metal panels 13 are located at both ends of the metal compartment 12. At least two corner portions 14 are formed between the metal compartment 12 and the two metal panels 13. The openings (unlabeled) of the at least two corner portions 14 have different orientations. The two side walls of the metal compartment 12 at both ends and the side walls of the two metal panels 13 together form the metal wall surface of the at least two corner portions 14. An antenna 2 is located in one corner portion 14. Because the metal wall of the corner portion 14 reflects the signal radiated by the antenna 2, each antenna 2 has a strong signal radiation capability in certain directions within a specific angle range, while its signal radiation capability is very weak in directions outside the specific angle range. Therefore, by setting at least two antennas 2 respectively in at least two corner portions 14, and making the openings of at least two corner portions 14 have different orientations, the antennas 2 can achieve omnidirectional coverage on the horizontal plane when combined. Then, by controlling at least two antennas 2 through the switching assembly 3, the antenna with the strongest signal is made to work. In this way, the signal radiated by the base station 100 is omnidirectionally covered on the horizontal plane, the radiation distance of the base station 100 is guaranteed, and only the antenna with the strongest signal works, saving the energy required by the base station 100.

[0045] In some embodiments, please refer to Figure 3 and Figure 4Four corner portions 14 are formed between the metal compartment 12 and the two metal panels 13. Specifically, the metal compartment 12 has a first end face 121 and a second end face 122 opposite to each other, one metal panel 13 has a third end face 131 and a fourth end face 132 opposite to each other, and the other metal panel 13 has a fifth end face 133 and a sixth end face 134 opposite to each other. A corner portion 14 is formed between the third end face 131 and the first end face 121, between the fourth end face 132 and the first end face 121, between the fifth end face 133 and the second end face 122, and between the sixth end face 134 and the second end face 122. There are also four antennas 2. One antenna 2 is located at a corner 14, and the angle between the openings of any two adjacent corners 14 is the same, that is, the angle between the openings of any two adjacent corners 14 is 90°. The first end face 121, the second end face 122, the third end face 131, the fourth end face 132, the fifth end face 133 and the sixth end face 134 can all reflect the signal radiated by the antenna 2, so that when the antennas 2 are combined together, omnidirectional coverage on the horizontal plane can be achieved.

[0046] In some embodiments, please refer to Figures 1 to 4 The third end face 131, the fourth end face 132, the fifth end face 133 and the sixth end face 134 are all tilted towards the sky, which can enhance the signal strength above the metal body 1.

[0047] In some embodiments, the length direction of the four antennas 2 is not perpendicular to the horizontal plane, thereby avoiding signal blind spots directly above the antennas 2.

[0048] The switching assembly 3 includes a controller 31, at least two signal detectors 32, and at least two switching switches 33. One signal detector 32 is connected to an antenna 2, and each signal detector 32 is connected to the controller 31. One switching switch 33 is connected to an antenna 2, and each switching switch 33 is connected to the controller 31. The signal detectors 32 are used to detect the strength of the signal radiated by the antenna 2 connected to them. Each signal detector 32 transmits the detected signal to the controller 31. The controller 31 determines the strength of the signal detected by each signal detector 32, and controls the switching switch 33 connected to the antenna 2 with the strongest signal to be turned on. At the same time, the controller 31 controls the other switching switches 33 to be turned off, so that only the antenna 2 with the strongest signal is in the working state, which can save the energy required by the base station 100.

[0049] As the flying object changes position during flight, it gradually moves away from the radiation area of ​​the active antenna 2. Since only the antenna 2 with the strongest signal is active in the base station 100, when the signal detector 32 connected to the active antenna 2 detects a signal strength lower than a preset value, the controller 31 controls all switching switches 33 to turn on, and all antennas 2 begin to work. At this time, each signal detector 32 transmits the detected signal to the controller 31. The controller 31 determines the strength of the signal detected by each signal detector 32, and controls the switching switch 33 connected to the antenna 2 with the strongest signal to turn on. At the same time, the controller 31 controls the other switching switches 33 to turn off, so that the base station 100 can maintain contact with the flying object at all times.

[0050] The four antennas 2 have the same structure. The difference lies in the installation position and orientation of the four antennas 2. Therefore, the structure of the antenna 2 located in the corner 14 formed by the first end face 121 and the third end face 131 will be described in detail below. The reader should think of the structure of the antenna 2 located in the other corner 14. They will not be described in detail here.

[0051] Please see Figures 1 to 8 Antenna 2 includes an antenna frame 21, a first radiating module 22, a duplexer assembly 23, a feed bus 24, and a second radiating module 25. The antenna frame 21 is mounted on a corner section 14, and the first radiating module 22, duplexer assembly 23, and second radiating module 25 are all mounted on the antenna frame 21. Both the first radiating module 22 and the second radiating module 25 are connected to the duplexer assembly 23. The first radiating module 22 radiates signals in a first and second frequency band, while the second radiating module 25 radiates signals in a third and fourth frequency band. The duplexer assembly 23 transmits the signals radiated by the first and second radiating modules 22 and 25 to the feed bus 24. One end of the feed bus 24 is connected to the duplexer assembly 23, and the other end is connected to a switch 33. The switch 33 is also connected to the mainboard (not shown) of the base station 100, allowing the switch 33 to control the connection or disconnection between the duplexer assembly 23 and the mainboard of the base station 100, thereby controlling the operation of antenna 2.

[0052] The first radiating module 22 includes a first dielectric substrate 221, a first feed line 222, a first radiating component 223, and a second radiating component 224. The first dielectric substrate 221 is mounted on the antenna frame 21, and its first surface 2213 faces the corner of the corner portion 14. The first radiating component 223 and the second radiating component 224 are both disposed on the first surface 2213 of the first dielectric substrate 221. Both the first radiating component 223 and the second radiating component 224 are connected to one end of the first feed line 222, and the other end of the first feed line 222 is connected to the duplexer component 23. The first radiating component 223 is used to radiate a first frequency band signal, and the second radiating component 224 is used to radiate a second frequency band signal. The first feeder 222 is used to transmit the first frequency band signal radiated by the first radiating component 223 and the second frequency band signal radiated by the second radiating component 224 to the duplexer component 23, thereby transmitting the first frequency band signal and the second frequency band signal transmitted to the duplexer component 23 to the feeder bus 24. When the switching switch 33 connected to the feeder bus 24 is in the on state, both the first frequency band signal and the second frequency band signal can be transmitted to the main board of the base station 100 through the switching switch 33. By mounting the antenna frame 21 on a corner portion 14, with the first surface 2213 of the first dielectric substrate 221 facing the corner of the corner portion 14, the first radiating component 223 and the second radiating component 224 are both disposed on the first surface 2213. When the first radiating component 223 or the second radiating component 224 radiates a signal, part of the signal is radiated toward the first end face 121 or the third end face 131. When the signal is radiated to the first end face 121 or the third end face 131, the first end face 121 or the third end face 131 reflects the signal, thereby enhancing the signal strength in the direction in which the opening of the corner portion 14 faces.

[0053] Specifically, the frequency range of the first frequency band signal is greater than or equal to 0.80 GHz and less than or equal to 0.91 GHz, and the frequency range of the second frequency band signal is greater than or equal to 1.34 GHz and less than or equal to 1.45 GHz. Because the first and second frequency band signals have lower frequencies and longer wavelengths, even though the shapes of the first end face 121 and the third end face 131 are irregular and have larger areas, the metal housing 12 and the metal panel 13, acting as reflectors, only generate less and weaker discontinuous scattering current when reflecting the first and second frequency band signals, ensuring that the fluctuations of the first and second frequency band signals at different angles are small.

[0054] A first power supply section 2211 and a second power supply section 2212 are provided on the first surface 2213 of the first dielectric substrate 221, and the first power supply section 2211 and the second power supply section 2212 are spaced apart. The first feed line 222 includes a first inner conductor 2221 and a first outer conductor 2222. The first inner conductor 2221 and the first outer conductor 2222 are insulated from each other. The first inner conductor 2221 is electrically connected to the first power supply section 2211, and the first outer conductor 2222 is electrically connected to the second power supply section 2212.

[0055] The first radiating component 223 includes a first radiating arm 2231, a second radiating arm 2232, and a third radiating arm 2233. One end of the first radiating arm 2231 is connected to the first feed section 2211, and the other end of the first radiating arm 2231 extends away from the second feed section 2212. One end of both the second radiating arm 2232 and the third radiating arm 2233 is connected to the second feed section 2212, and the other ends of both extend away from the first feed section 2211. The first radiating arm 2231, the second radiating arm 2232, the third radiating arm 2233, the first feed section 2211, and the second feed section 2212 can collectively form a radiating unit, so that the first radiating arm 2231, the second radiating arm 2232, and the third radiating arm 2233 can jointly radiate a first frequency band signal.

[0056] In some embodiments, the first radiating component 223 further includes a first branch 2234, a second branch 2235, and a third branch 2236. The first branch 2234 is connected to the other end of the first radiating arm 2231, the second branch 2235 is connected to the other end of the second radiating arm 2232, and the third branch 2236 is connected to the other end of the third radiating arm 2233. The second branch 2235 is located on the side of the second radiating arm 2232 away from the third radiating arm 2233, and the third branch 2236 is located on the side of the third radiating arm 2233 away from the second radiating arm 2232. The first branch 2234, the second branch 2235, and the third branch 2236 are used to adjust the resonant frequency of the first radiating component 223, so that the frequency of the signal radiated by the first radiating component 223 falls within the first frequency band, while shortening the length of the first radiating arm 2231, the second radiating arm 2232, and the third radiating arm 2233. This is beneficial for reducing the size of the antenna 2, thereby reducing the volume of the base station 100.

[0057] Furthermore, the second radiating arm 2232 and the third radiating arm 2233 are parallel to each other.

[0058] Furthermore, when viewed from a direction perpendicular to the first surface 2213 of the dielectric plate, the second radiating arm 2232 and the third radiating arm 2233 are symmetrical to each other, and the second branch 2235 and the third branch 2236 are symmetrical to each other.

[0059] Furthermore, along the length direction of the first radiating arm 2231, the sum of the lengths of the first radiating arm 2231 and the first branch 2234, the sum of the lengths of the second radiating arm 2232 and the second branch 2235, and the sum of the lengths of the third radiating arm 2233 and the third branch 2236 are all greater than or equal to 1 / 8 of the wavelength of the first frequency band signal and less than or equal to 3 / 4 of the wavelength of the first frequency band signal. Specifically, based on the mid-frequency of the first frequency band signal of 0.855 GHz, the sum of the lengths of the first radiating arm 2231 and the first branch 2234, the sum of the lengths of the second radiating arm 2232 and the second branch 2235, and the sum of the lengths of the third radiating arm 2233 and the third branch 2236 are all greater than or equal to 43.86 mm and less than or equal to 263.15 mm, thereby enabling the first radiating component 223 to radiate the first frequency band signal.

[0060] The second radiating assembly 224 includes a fourth radiating arm 2241, a fifth radiating arm 2242, a sixth radiating arm 2243, and a seventh radiating arm 2244. One end of the fourth radiating arm 2241 and the fifth radiating arm 2242 are both connected to the first feed section 2211, and the fourth radiating arm 2241 and the fifth radiating arm 2242 are located on opposite sides of the first radiating arm 2231. One end of the sixth radiating arm 2243 and the seventh radiating arm 2244 are both connected to the second feed section 2212, and the sixth radiating arm 2243 is located on the side of the second radiating arm 2232 away from the third radiating arm 2233, while the seventh radiating arm 2244 is located on the side of the third radiating arm 2233 away from the second radiating arm 2232. The fourth radiating arm 2241, the fifth radiating arm 2242, the sixth radiating arm 2243, the seventh radiating arm 2244, the first feed unit 2211, and the second feed unit 2212 together form another radiating unit, so that the fourth radiating arm 2241, the fifth radiating arm 2242, the sixth radiating arm 2243, and the seventh radiating arm 2244 can jointly radiate the second frequency band signal.

[0061] In some embodiments, the fourth radiating arm 2241 and the fifth radiating arm 2242 are symmetrical with respect to the first radiating arm 2231.

[0062] In some embodiments, when viewed from a direction perpendicular to the first surface 2213, the sixth radiating arm 2243 and the seventh radiating arm 2244 are symmetrical to each other.

[0063] In some embodiments, when viewed along a direction perpendicular to the first surface 2213, the fourth radiating arm 2241 and the sixth radiating arm 2243 are symmetrical to each other, and the fifth radiating arm 2242 and the seventh radiating arm 2244 are symmetrical to each other.

[0064] Furthermore, along the length of the first radiating arm 2231, the lengths of the fourth radiating arm 2241, the fifth radiating arm 2242, the sixth radiating arm 2243, and the seventh radiating arm 2244 are all greater than or equal to 1 / 8 of the wavelength of the second frequency band signal and less than or equal to 3 / 4 of the wavelength of the second frequency band signal. Specifically, calculated using the mid-frequency of the second frequency band signal, 1.395 GHz, the lengths of the fourth radiating arm 2241, the fifth radiating arm 2242, the sixth radiating arm 2243, and the seventh radiating arm 2244 are all greater than or equal to 26.88 mm and less than or equal to 161.29 mm, thereby enabling the second radiating component 224 to radiate the second frequency band signal.

[0065] It is worth noting that the first radiating arm 2231 is not perpendicular to the horizontal plane, and neither is the second radiating arm 2232. This avoids the formation of blind spots for the first and second frequency band signals directly above the antenna 2, and thus avoids the formation of blind spots for the first and second frequency band signals above the base station 100. The length direction of the antenna 2 is the same as the length direction of the first radiating arm 2231, ensuring that the length direction of the antenna 2 is not perpendicular to the horizontal plane.

[0066] The second radiating module 25 includes a second dielectric substrate 251, a second feed line 252, a third radiating component 253, and a fourth radiating component 254. The second dielectric substrate 251 is mounted on the antenna frame 21. The first dielectric substrate 221 and the second dielectric substrate 251 are distributed along the length of the antenna frame 21, and the second dielectric substrate 251 has a second surface 2513 facing outward from the corner portion 14. The third radiating component 253 and the fourth radiating component 254 are both disposed on the second surface 2513 of the second dielectric substrate 251. Both the third radiating component 253 and the fourth radiating component 254 are connected to one end of the second feed line 252, and the other end of the second feed line 252 is connected to the duplexer assembly 23. The third radiating component 253 is used to radiate the third frequency band signal, and the fourth radiating component 254 is used to radiate the fourth frequency band signal. The second feeder 252 is used to transmit the third frequency band signal radiated by the third radiating component 253 and the fourth frequency band signal radiated by the fourth radiating component 254 to the duplexer component 23, thereby transmitting the first frequency band signal, the second frequency band signal, the third frequency band signal and the fourth frequency band signal transmitted to the duplexer component 23 to the feeder bus 24. When the switching switch 33 connected to the feeder bus 24 is in the on state, the first frequency band signal, the second frequency band signal, the third frequency band signal and the fourth frequency band signal can all be transmitted to the main board of the base station 100 through the switching switch 33.

[0067] The frequency range of the third frequency band signal is greater than or equal to 2.23 GHz and less than or equal to 2.57 GHz, and the frequency range of the fourth frequency band signal is greater than or equal to 5.44 GHz and less than or equal to 5.88 GHz. Since the frequencies of the third and fourth frequency band signals are relatively high, the second surface 2513 of the second dielectric plate 251 is oriented towards the space outside the corner portion 14, so that both the third radiating component 253 and the fourth radiating component 254 face the space outside the corner portion 14. This reduces the scattering current generated by the reflection of the third and fourth frequency band signals by the metal housing 12 and the metal panel 13.

[0068] In some embodiments, the second surface 2513 of the second medium plate 251 is perpendicular to the first surface 2213 of the first medium plate 221, and the first surface 2213 faces the corner of the corner portion 14, while the second surface 2513 faces the space outside the corner portion 14.

[0069] Please see Figure 1 , Figure 6 , Figure 9 and Figure 10 The second dielectric substrate 251 is provided with a third feed section 2511 and a fourth feed section 2512, both of which are disposed on the second surface 2513 of the second dielectric substrate 251 and are separated from each other. The second feed line 252 includes a second inner conductor 2521 and a second outer conductor 2522, which are insulated from each other. The second inner conductor 2521 is electrically connected to the third feed section 2511, and the second outer conductor 2522 is electrically connected to the fourth feed section 2512.

[0070] The third radiating component 253 includes an eighth radiating arm 2531 and a ninth radiating arm 2532. One end of the eighth radiating arm 2531 is connected to the third feed section 2511, and the other end of the eighth radiating arm 2531 extends away from the fourth feed section 2512. One end of the ninth radiating arm 2532 is connected to the fourth feed section 2512, and the other end of the ninth radiating arm 2532 extends away from the third feed section 2511. The eighth radiating arm 2531, the ninth radiating arm 2532, the third feed section 2511, and the fourth feed section 2512 together form another radiating unit, so that the eighth radiating arm 2531 and the ninth radiating arm 2532 can be used together to radiate third-band signals.

[0071] Furthermore, the lengths of the eighth radiating arm 2531 and the ninth radiating arm 2532 are both greater than or equal to 1 / 8 of the wavelength of the third frequency band signal and less than or equal to 3 / 4 of the wavelength of the third frequency band signal. Specifically, based on the mid-frequency of the third frequency band signal, 2.4 GHz, the lengths of the eighth radiating arm 2531 and the ninth radiating arm 2532 are both greater than or equal to 15.63 mm and less than or equal to 93.75 mm, thus enabling the eighth radiating arm 2531 and the ninth radiating arm 2532 to jointly radiate the third frequency band signal.

[0072] In some embodiments, the eighth radiating arm 2531 includes a first connecting portion 25311 and a first widening portion 25312. One end of the first connecting portion 25311 is electrically connected to the third feed portion 2511, and the other end of the first connecting portion 25311 extends away from the fourth feed portion 2512. The first widening portion 25312 is connected to the other end of the first connecting portion 25311. The ninth radiating arm 2532 includes a second connecting portion 25321 and a second widening portion 25322. One end of the second connecting portion 25321 is electrically connected to the fourth feed portion 2512, and the other end of the second connecting portion 25321 extends away from the third feed portion 2511. The second widening portion 25322 is connected to the other end of the second connecting portion 25321. The first widening portion 25312 and the second widening portion 25322 can respectively adjust the resonant frequencies of the eighth radiating arm 2531 and the ninth radiating arm 2532, so that the eighth radiating arm 2531 and the ninth radiating arm 2532 can radiate third frequency band signals within a shorter size range, which is beneficial to reduce the size of the antenna 2, thereby reducing the size of the base station 100.

[0073] Furthermore, the first connecting portion 25311 extends in a straight line, and the second connecting portion 25321 extends in a straight line.

[0074] In some embodiments, please refer to Figure 11 The first connecting part 25311 extends in a rectangular wave shape, and the second connecting part 25321 also extends in a rectangular wave shape, which helps to shorten the length of the eighth radiation arm 2531 and the ninth radiation arm 2532.

[0075] Furthermore, when viewed along a direction perpendicular to the second surface 2513, the eighth radiating arm 2531 and the ninth radiating arm 2532 are symmetrical to each other.

[0076] Please see Figure 1 , Figure 6 , Figure 9 and Figure 10The fourth radiating component 254 includes a tenth radiating arm 2541 and an eleventh radiating arm 2542. One end of the tenth radiating arm 2541 is connected to the third feed section 2511, and the other end of the tenth radiating arm 2541 extends away from the fourth feed section 2512. The eleventh radiating arm 2542 is connected to the fourth feed section 2512, and the other end of the eleventh radiating arm 2542 extends away from the third feed section 2511. The tenth radiating arm 2541, the eleventh radiating arm 2542, the third feed section 2511, and the fourth feed section 2512 together form another radiating unit, so that the tenth radiating arm 2541 and the eleventh radiating arm 2542 can be used together to radiate fourth frequency band signals.

[0077] Furthermore, the lengths of the tenth radiating arm 2541 and the eleventh radiating arm 2542 are both greater than or equal to 1 / 8 of the wavelength of the fourth frequency band signal and less than or equal to 3 / 4 of the wavelength of the fourth frequency band signal. Specifically, based on the mid-frequency of the fourth frequency band signal, 5.66 GHz, the lengths of the tenth radiating arm 2541 and the eleventh radiating arm 2542 are both greater than or equal to 6.63 mm and less than or equal to 39.75 mm, thus enabling the tenth radiating arm 2541 and the eleventh radiating arm 2542 to jointly radiate the fourth frequency band signal.

[0078] In some embodiments, please refer to Figure 11 The tenth radiating arm 2541 is provided with a fourth branch 25411 at the end away from the eleventh radiating arm 2542, and the eleventh radiating arm 2542 is provided with a fifth branch 25421 at the end away from the tenth radiating arm 2541. The fourth branch 25411 and the fifth branch 25421 can adjust the resonant frequency of the tenth radiating arm 2541 and the eleventh radiating arm 2542, so that the tenth radiating arm 2541 and the eleventh radiating arm 2542 can radiate the fourth frequency band signal within a relatively short size range.

[0079] Furthermore, when viewed along a direction perpendicular to the second surface 2513, the tenth radiating arm 2541 and the eleventh radiating arm 2542 are symmetrical to each other.

[0080] It is worth noting that the tenth radiating arm 2541 and the eleventh radiating arm 2542 are not perpendicular to the horizontal plane, so as to avoid the formation of blind spots for the third and fourth frequency band signals above the antenna 2, and thus avoid the formation of blind spots for the third and fourth frequency band signals above the base station 100.

[0081] Please see Figure 1 , Figure 6 , Figure 9 and Figure 10The second radiation module 25 also includes a reflector 255 and a director 256. The reflector 255 is disposed on the second surface 2513 of the second dielectric plate 251 and in the direction X, which is perpendicular to the length of the eighth radiation arm 2531 and parallel to the second surface 2513. The projections of the eighth radiation arm 2531, the ninth radiation arm 2532, the tenth radiation arm 2541 and the eleventh radiation arm 2542 all fall within the projection of the reflector 255, so that the reflector 255 can radiate the third frequency band signal and the fourth frequency band signal toward the opening of the corner portion 14, wherein the opening of the corner portion 14 is at least partially facing the sky. A director 256 is also disposed on the second surface 2513 of the second dielectric plate 251, and the eighth radiating arm 2531, the ninth radiating arm 2532, the tenth radiating arm 2541, and the eleventh radiating arm 2542 are all located between the reflector 255 and the director 256, so that the director 256 can guide the third-band signal and the fourth-band signal to radiate in the direction of the opening of the corner portion 14. By disposing of the director 256 and the reflector 255, the third-band signal and the fourth-band signal are radiated in the direction of the opening of the corner portion 14, wherein the opening of the corner portion 14 is at least partially oriented towards the sky, thereby increasing the intensity of the third-band signal and the fourth-band signal above the metal body 1. In addition, by using the director 256 and reflector 255 to directly radiate the third and fourth frequency band signals toward the sky, the third and fourth frequency band signals are prevented from radiating toward the first end face 121 and the third end face 131. This avoids the irregularly shaped metal body 1 and metal panel 13 from reflecting the high-frequency third and fourth frequency band signals and forming a large scattering current. This helps to avoid excessive fluctuations in the signal with the angle, effectively improves the uniformity of the signal, and reduces the signal dead zone.

[0082] Furthermore, the reflector 255 extends in a straight line, the director 256 also extends in a straight line, and the reflector 255 and the director 256 are parallel to each other.

[0083] In some embodiments, please refer to Figure 11 The reflector 255 extends in an arc shape.

[0084] To help readers better understand the concept of this invention, the following experiments demonstrate the capabilities of base station 100:

[0085] Since this invention requires at least two antennas 2 to work together, to facilitate the identification of the directivity of each antenna 2, the following will be... Figure 1The antenna 2 located in the lower left corner is called antenna 1, the antenna 2 located in the upper left corner is called antenna 2, the antenna 2 located in the upper right corner is called antenna 3, and the antenna 2 located in the lower right corner is called antenna 4. In this embodiment of the invention, the metal housing 12 is installed on the bracket 11, and two metal panels 13 are respectively installed at both ends of the metal housing 12, so that four corner sections 14 are formed between the two metal panels 13 and the metal housing 12. Antenna 1, antenna 2, antenna 3 and antenna 4 are respectively set in one corner section 14, and the operation of each antenna 2 is controlled by a switch switching component, so that the signal radiated by the base station 100 can achieve omnidirectional coverage in the horizontal plane.

[0086] 1) For the first frequency band signal, the base station 100 provides a first feed section 2211 and a second feed section 2212 that are separated from each other on the first surface 2213 of the first dielectric substrate 221 in each antenna 2 towards the corner of the corner 14. The first feed section 2211 and the first inner conductor 2221 of the first feed line 222 are connected. The first outer conductor 2222 of the first feed line 222 is connected to the second feed section 2212. One end of the first radiating arm 2231 is connected to the first feed section 2211. The first branch 2234 is connected to the other end of the first radiating arm 2231. One end of the second radiating arm 2232 and the third radiating arm 2233 are both connected to the second feed section 2212. The second branch 2235 is connected to the other end of the second radiating arm 2232. The third branch 2236 is connected to the other end of the third radiating arm 2233. Furthermore, by reflecting the first frequency band signal through the first end face 121, second end face 122, third end face 131, fourth end face 132, fifth end face 133, and sixth end face 134, and by ensuring that the openings of each corner portion 14 face different directions, each antenna 2 can radiate the first frequency band signal in different directions. Moreover, because the third end face 131, fourth end face 132, fifth end face 133, and sixth end face 134 are tilted towards the sky, most of the first frequency band signal reflected by these end faces radiates diagonally upwards towards the metal body 1, thereby increasing the strength of the first frequency band signal diagonally upwards from the metal body 1. Furthermore, by controlling the operation of each antenna 2 through the switching assembly 3, the first frequency band signal radiated by the base station 100 achieves omnidirectional horizontal coverage. Please refer to [link to relevant documentation]. Figure 12 ,from Figure 12 It can be seen that base station 100 has good circuit performance in the frequency range of 0.80 to 0.91 GHz. Please refer to... Figure 13 , Figure 13 The lines indicated by the horizontal radiation pattern of antenna 1 represent the directivity of antenna 1 in the horizontal plane. Figure 13 The lines indicated by the horizontal radiation pattern of antenna 2 represent the directivity of antenna 2 in the horizontal plane. Figure 13The lines indicated by the horizontal radiation pattern of antenna 3 represent the directivity of antenna 3 in the horizontal plane. Figure 13 The lines indicated by the horizontal radiation pattern of antenna 4 represent the directivity of antenna 4 in the horizontal plane. Figure 13 The lines indicated by the horizontal plane radiation pattern envelope represent the directivity of base station 100 in the horizontal plane. These lines are composed of the best-radiating portions of antennas 1, 2, 3, and 4. From... Figure 13 As can be seen from this, the first frequency band signal radiated by base station 100 has omnidirectional properties on the horizontal plane.

[0087] 2) For the second frequency band signal, the base station 100 provides a first feed section 2211 and a second feed section 2212 that are separated from each other on the first surface 2213 of the first dielectric substrate 221 in each antenna 2 towards the corner of the corner 14. The first feed section 2211 and the first inner conductor 2221 of the first feed line 222 are connected, the first outer conductor 2222 of the first feed line 222 is connected to the second feed section 2212, one end of the fourth radiating arm 2241 and the fifth radiating arm 2242 is connected to the first feed section 2211, and one end of the sixth radiating arm 2243 and the seventh radiating arm 2244 is connected to the second feed section 2212. Furthermore, by reflecting the second frequency band signal through the first end face 121, second end face 122, third end face 131, fourth end face 132, fifth end face 133, and sixth end face 134, and by ensuring that the openings of each corner portion 14 face different directions, each antenna 2 can radiate the second frequency band signal in different directions. Moreover, because the third end face 131, fourth end face 132, fifth end face 133, and sixth end face 134 are tilted towards the sky, most of the second frequency band signal reflected by these end faces radiates diagonally upwards towards the metal body 1, thereby increasing the strength of the first frequency band signal diagonally upwards from the metal body 1. The antennas also control the operation of each antenna 2 through the switching assembly 3, enabling the second frequency band signal radiated by the base station 100 to achieve omnidirectional horizontal coverage. Please refer to [link to relevant documentation]. Figure 12 ,from Figure 12 It can be seen that base station 100 has good circuit performance in the 1.34 to 1.45 GHz frequency range. Please refer to... Figure 14 , Figure 14 The lines indicated by the horizontal radiation pattern of antenna 1 represent the directivity of antenna 1 in the horizontal plane. Figure 14 The lines indicated by the horizontal radiation pattern of antenna 2 represent the directivity of antenna 2 in the horizontal plane. Figure 14 The lines indicated by the horizontal radiation pattern of antenna 3 represent the directivity of antenna 3 in the horizontal plane. Figure 14The lines indicated by the horizontal radiation pattern of antenna 4 represent the directivity of antenna 4 in the horizontal plane. Figure 14 The lines indicated by the horizontal plane radiation pattern envelope represent the directivity of base station 100 in the horizontal plane. These lines are composed of the best-radiating portions of antennas 1, 2, 3, and 4. From... Figure 14 As can be seen from this, the second frequency band signal radiated by base station 100 has omnidirectional properties on the horizontal plane.

[0088] 3) For the third frequency band, the base station 100 provides a third feed section 2511 and a fourth feed section 2512 separated from each other on the second surface 2513 of the second dielectric substrate 251 in each antenna 2, facing the space outside the corner portion 14. The third feed section 2511 and the second inner conductor 2521 of the second feed line 252 are connected, the second outer conductor 2522 of the second feed line 252 is connected to the fourth feed section 2512, and one end of the eighth radiating arm 2531 is connected to the third feed section. The unit 2511 is connected, one end of the ninth radiating arm 2532 is connected to the fourth feed unit 2512, the reflector 255 and the director 256 are both disposed on the second surface 2513, and the eighth radiating arm 2531 and the ninth radiating arm 2532 are located between the reflector 255 and the director 256, so that each antenna 2 can radiate the third frequency band signal in different directions, and the operation of each antenna 2 is controlled by the switching assembly 3, so that the third frequency band signal radiated by the base station 100 achieves omnidirectional coverage in the horizontal plane. Please refer to Figure 15 ,from Figure 15 It can be seen that base station 100 has good circuit performance in the frequency range of 2.23 to 2.57 GHz. Please refer to... Figure 16 , Figure 16 The lines indicated by the horizontal radiation pattern of antenna 1 represent the directivity of antenna 1 in the horizontal plane. Figure 16 The lines indicated by the horizontal radiation pattern of antenna 2 represent the directivity of antenna 2 in the horizontal plane. Figure 16 The lines indicated by the horizontal radiation pattern of antenna 3 represent the directivity of antenna 3 in the horizontal plane. Figure 16 The lines indicated by the horizontal radiation pattern of antenna 4 represent the directivity of antenna 4 in the horizontal plane. Figure 16 The lines indicated by the horizontal plane radiation pattern envelope represent the directivity of base station 100 in the horizontal plane. These lines are composed of the best-radiating portions of antennas 1, 2, 3, and 4. From... Figure 16 As can be seen from this, the third frequency band signal radiated by base station 100 has omnidirectional properties on the horizontal plane.

[0089] 4) For the fourth frequency band, the base station 100 provides a third feed section 2511 and a fourth feed section 2512 separated from each other on the second surface 2513 of the second dielectric substrate 251 in each antenna 2, facing the space outside the corner portion 14. The third feed section 2511 and the second inner conductor 2521 of the second feed line 252 are connected, the second outer conductor 2522 of the second feed line 252 is connected to the fourth feed section 2512, and one end of the tenth radiating arm 2541 is connected to the third feed section. 2511 is connected, with one end of the eleventh radiating arm 2542 connected to the fourth feed section 2512. Reflectors 255 and directors 256 are both disposed on the second surface 2513, and the tenth radiating arm 2541 and the eleventh radiating arm 2542 are located between the reflector 255 and the director 256. This allows each antenna 2 to radiate fourth-band signals in different directions. The operation of each antenna 2 is controlled by the switching assembly 3, enabling the fourth-band signal radiated by the base station 100 to achieve omnidirectional horizontal coverage. Please refer to [link to relevant documentation]. Figure 15 ,from Figure 15 It can be seen that base station 100 has good circuit performance in the frequency range of 5.44 to 5.88 GHz. Please refer to... Figure 17 , Figure 17 The lines indicated by the horizontal radiation pattern of antenna 1 represent the directivity of antenna 1 in the horizontal plane. Figure 17 The lines indicated by the horizontal radiation pattern of antenna 2 represent the directivity of antenna 2 in the horizontal plane. Figure 17 The lines indicated by the horizontal radiation pattern of antenna 3 represent the directivity of antenna 3 in the horizontal plane. Figure 17 The lines indicated by the horizontal radiation pattern of antenna 4 represent the directivity of antenna 4 in the horizontal plane. Figure 17 The lines indicated by the horizontal plane radiation pattern envelope represent the directivity of base station 100 in the horizontal plane. These lines are composed of the best-radiating portions of antennas 1, 2, 3, and 4. From... Figure 17 As can be seen from this, the fourth frequency band signal radiated by base station 100 has omnidirectional properties on the horizontal plane.

[0090] In this embodiment of the invention, by setting at least two antennas 2 on the metal body 1 and connecting at least two antennas 2 to the switching assembly 3, and by having at least two antennas 2 facing different directions, the combination of the signal directions radiated by each of the at least two antennas 2 can provide omnidirectional coverage on the horizontal plane. Then, by using the switching assembly 3 to make the antenna with the strongest signal among the at least two antennas 2 work, the signal radiated by the base station 100 can be omnidirectionally covered on the horizontal plane, while the size of a single antenna can be greatly reduced, which is beneficial to reducing the overall volume of the base station 100.

[0091] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A base station, the base station being used for remote communication connection with an airborne object, characterized in that, include: The metal body has at least two corner portions, and the at least two corner portions are oriented in different directions; At least two antennas, one of which is disposed at a corner portion, the corner portion of which is used to reflect the signal radiated by the antenna, so that the combination of the signal directions radiated by the at least two antennas can provide omnidirectional coverage on the horizontal plane; A switching assembly is provided, wherein the at least two antennas are connected to the switching assembly to enable the antenna with the strongest signal among the at least two antennas to operate.

2. The base station according to claim 1, characterized in that, The metal body includes a support frame, a metal compartment, and two metal panels. The metal compartment and the two metal panels are all mounted on the support frame. The two metal panels are located at both ends of the metal compartment. Four corner sections are formed between the metal compartment and the two metal panels, and the four corner sections have different orientations. The number of antennas is four, and one of the antennas is set at one of the corners so that the combination of the signal directions radiated by the four antennas can provide omnidirectional coverage on the horizontal plane.

3. The base station according to claim 1, characterized in that, The length directions of the at least two antennas are not perpendicular to the horizontal plane.

4. The base station according to claim 1, characterized in that, The antenna includes an antenna frame and a first radiating module. The antenna frame is disposed at the corner, and the first radiating module is disposed at the antenna frame. The first radiating module is connected to the switching assembly and is used to radiate a first frequency band signal and a second frequency band signal.

5. The base station according to claim 4, characterized in that, The first radiating module includes a first dielectric substrate, a first feed line, and a first radiating component. The first dielectric substrate is mounted on the antenna frame, and the first radiating component is disposed on a first surface of the first dielectric substrate, with the first surface facing the corner of the corner portion. One end of the first feed line is electrically connected to the first radiating component, and the other end of the feed line is connected to the switching component. The first radiating component is used to radiate a first frequency band signal, and the metal wall surface of the corner portion has a reflective effect on the first frequency band signal to improve the intensity of the first frequency band signal above the metal body.

6. The base station according to claim 5, characterized in that, The first dielectric substrate is provided with a first power supply section and a second power supply section, which are separated from each other. The first feed line includes a first inner conductor and a first outer conductor, which are insulated from each other. The first inner conductor and the first outer conductor are electrically connected, and the first outer conductor is electrically connected to the second power supply section. The first radiating component is connected to the first power supply section and the second power supply section respectively.

7. The base station according to claim 6, characterized in that, The first radiating component includes a first radiating arm, a second radiating arm, and a third radiating arm. One end of the first radiating arm is connected to the first feed section, and one end of the second radiating arm and the third radiating arm are both connected to the second feed section. The first radiating arm, the second radiating arm, and the third radiating arm are used together to radiate a first frequency band signal.

8. The base station according to claim 7, characterized in that, The first radiating component further includes a first branch, a second branch, and a third branch. The first branch is connected to the other end of the first radiating arm, the second branch is connected to the other end of the second radiating arm, and the third branch is connected to the other end of the third radiating arm.

9. The base station according to claim 7, characterized in that, The first radiation module further includes a second radiation component, which includes a fourth, fifth, sixth, and seventh radiation arm. One end of the fourth and fifth radiation arms is connected to the first feed section, and the fourth and fifth radiation arms are located on opposite sides of the first radiation arm. One end of the sixth and seventh radiation arms is connected to the second feed section, and the sixth radiation arm is located on the side of the second radiation arm away from the third radiation arm. The seventh radiation arm is located on the side of the third radiation arm away from the second radiation arm. The second, fourth, fifth, sixth, and seventh radiation arms are used together to radiate a second frequency band signal, and the metal wall surface at the corner has a reflective effect on the second frequency band signal to increase the intensity of the second frequency band signal above the metal body.

10. The base station according to claim 4, characterized in that, The antenna further includes a duplexer assembly, a feed bus, and a second radiating module. The second radiating module is disposed on the antenna frame. Both the first and second radiating modules are connected to the duplexer assembly. One end of the feed bus is connected to the duplexer assembly, and the other end of the feed bus is connected to the switching assembly. The second radiating module is used to radiate third-band signals and fourth-band signals.

11. The base station according to any one of claims 1-10, characterized in that, The second radiating module includes a second dielectric substrate, a second feed line, and a third radiating component. The second dielectric substrate is mounted on the antenna frame, and the third radiating component is disposed on the second surface of the second dielectric substrate, with the second surface facing outward from the opening at the corner. One end of the second feed line is connected to the third radiating component, and the other end of the second feed line is connected to the duplexer assembly. The third radiating component is used to radiate a third frequency band signal.

12. The base station according to claim 11, characterized in that, The second dielectric substrate is provided with a third power supply section and a fourth power supply section, which are spaced apart. The second feed line includes a second inner conductor and a second outer conductor. The second inner conductor is electrically connected to the third power supply section, and the second outer conductor is electrically connected to the fourth power supply section. Both the third power supply section and the fourth power supply section are connected to the third radiating component.

13. The base station according to claim 12, characterized in that, The third radiating component includes an eighth radiating arm and a ninth radiating arm. One end of the eighth radiating arm is connected to the third feed unit, and one end of the ninth radiating arm is connected to the fourth feed unit. The eighth and ninth radiating arms are used together to radiate third frequency band signals.

14. The base station according to claim 13, characterized in that, The second radiation module further includes a reflector disposed on the second dielectric plate, and the projections of the eighth and ninth radiation arms fall within the projection of the reflector in the length direction perpendicular to the eighth radiation arm. The reflector is used to reflect the third frequency band signal radiated by the third radiation component toward the opening of the corner.

15. The base station according to claim 14, characterized in that, The second radiation module further includes a director disposed on the second dielectric plate, and the third radiation component is located between the reflector and the director.

16. The base station according to claim 14, characterized in that, The second radiation module further includes a fourth radiation component, which includes a tenth radiation arm and an eleventh radiation arm. One end of the tenth radiation arm is connected to the third feed section, and the eleventh radiation arm is connected to the fourth feed section. The tenth and eleventh radiation arms are used together to radiate a fourth frequency band signal. The reflector is also used to reflect the fourth frequency band signal radiated by the fourth radiation component toward the opening of the corner section.

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