Drones

Abstract

A drone (1000) comprises a fuselage (110), an arm (130), a tripod (150) and an antenna assembly (170). The arm (130) is connected to the fuselage (110). The tripod (150) is connected to the arm (130). The antenna assembly (170) comprises at least one first antenna radiating unit (171) and at least one second antenna radiating unit (173). The first antenna radiating unit (171) has a first polarization direction. The first antenna radiating unit (171) is mounted on the arm (130). The second antenna radiating unit (173) has a second polarization direction. The first polarization direction is different from the second polarization direction. The second antenna radiating unit (173) is mounted on the tripod (150).

Description

Technical Field

[0001] The present application relates to the field of drone communication technology, and in particular to a drone. Background Art

[0002] In the related art, when a drone is flying, it needs to communicate with the control end, receive the flight control instructions from the control end and adjust the flight state, and send the real-time image transmission signal of the drone to the control end so that the user can watch the aerial photography effect in real time. The drone has an antenna to receive and transmit the signal for communication with the control end.

[0003] However, the existing UAV antenna is usually a single-polarized antenna, such as a vertically polarized antenna. When the UAV is flying, its posture may change in real time, especially when the posture of the flying UAV changes greatly, which may easily lead to the problem of polarization mismatch between the UAV antenna and the control end antenna. Summary of the invention

[0004] An embodiment of the present application provides a drone.

[0005] An unmanned aerial vehicle provided in an embodiment of the present application includes:

[0006] body;

[0007] A machine arm connected to the machine body;

[0008] A tripod connected to the machine arm; and

[0009] An antenna assembly, the antenna assembly comprising:

[0010] at least one first antenna radiating unit, the first antenna radiating unit having a first polarization direction, the first antenna radiating unit being mounted on the arm; and

[0011] At least one second antenna radiating unit, the second antenna radiating unit has a second polarization direction, the first polarization direction is different from the second polarization direction, and the second antenna radiating unit is installed on the tripod.

[0012] The above-mentioned UAV can reduce the probability of polarization mismatch and improve the communication stability and reliability of the UAV by rationally utilizing the spatial layout of the UAV and placing antenna radiation units with different polarization directions at different positions of the fuselage.

[0013] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a schematic diagram of a part of the structure of a drone according to an embodiment of the present application;

[0016] Figure 2 is a schematic diagram of the side structure of a drone according to an embodiment of the present application;

[0017] Figure 3 yes Figure 1 An enlarged view of the X1 portion;

[0018] Figure 4 yes Figure 1 An enlarged view of the X2 portion;

[0019] Figure 5 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application;

[0020] Figure 6 is another structural schematic diagram of an antenna assembly according to an embodiment of the present application;

[0021] Figure 7 is another structural schematic diagram of an antenna assembly according to an embodiment of the present application;

[0022] Figure 8 is another structural schematic diagram of an antenna assembly according to an embodiment of the present application;

[0023] Fig. 9 is a standing wave curve diagram of the antenna assembly of the embodiment of the present application under different working conditions;

[0024] Fig.10 is another structural schematic diagram of an antenna assembly according to an embodiment of the present application;

[0025] Fig.11 is an exploded view of an antenna assembly according to an embodiment of the present application;

[0026] Fig.12 yes Fig.11 Magnified view of the Y portion.

[0027] Description of main drawing elements:

[0028] UAV 1000;

[0029] Body 110, nose 111, arm 130, rear arm 131, tripod 150, front tripod 151, antenna assembly 170, first antenna radiation unit 171, second antenna radiation unit 173;

[0030] First circuit board 210, first surface 211, second surface 213, second circuit board 230, third surface 231, fourth surface 233, functional circuit 250, mounting portion 251, functional component 252, connecting portion 253, first portion 255, second portion 257, decoupling connecting device 270;

[0031] A first functional circuit 310 and a second functional circuit 330 . DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0036] Please refer to Figure 1 and Figure 2 , a drone 1000 provided in an embodiment of the present application includes a fuselage 110, an arm 130, a tripod 150 and an antenna assembly 170. The arm 130 is connected to the fuselage 110. The tripod 150 is connected to the arm 130. The antenna assembly 170 includes at least one first antenna radiating unit 171 and at least one second antenna radiating unit 173. The first antenna radiating unit 171 has a first polarization direction. The first antenna radiating unit 171 is installed on the arm 130. The second antenna radiating unit 173 has a second polarization direction. The first polarization direction is different from the second polarization direction. The second antenna radiating unit 173 is installed on the tripod 150. Optionally, at least one first antenna radiating unit 171 is a dipole antenna, and or, at least one second antenna radiating unit 173 is a dipole antenna.

[0037] The above-mentioned drone 1000 can reduce the probability of polarization mismatch and improve the communication stability and reliability of the drone 1000 by reasonably utilizing the spatial layout of the drone 1000 and placing antenna radiation units with different polarization directions at different positions of the fuselage 110.

[0038] When the first polarization direction is different from the second polarization direction, the directional pattern of the first antenna radiation unit 171 and the directional pattern of the second antenna radiation unit 173 also cover ranges in different azimuths, so that the antenna radiation unit as a whole can have a directional pattern with a larger coverage range, which makes it easy to achieve directional pattern coverage of the full posture and full space of the drone 1000, and even if the drone 1000 is in motion, the communication stability of the drone 1000 can be guaranteed.

[0039] The antenna assembly 170 can receive and transmit radio frequency signals in a linear polarization manner. Figure 2In some embodiments, the first polarization direction includes a horizontal polarization direction, and the second polarization direction includes a vertical polarization direction. In this way, the antenna assembly 170 can cover the radio frequency signals in the horizontal polarization direction and the radio frequency signals in the vertical polarization direction. Among them, the horizontal polarization direction refers to the direction of the electric field strength formed when the antenna radiates is parallel to the ground, and the vertical polarization direction refers to the direction of the electric field strength formed when the antenna radiates is perpendicular to the ground. In other embodiments, the first polarization direction includes a polarization direction of +45 degrees to the horizontal plane, and the second polarization direction includes a polarization direction of -45 degrees to the horizontal plane. By adopting a linear polarization wiring method, the manufacturing difficulty of the antenna assembly 170 can be reduced, the feeding method of the antenna assembly 170 can be simplified, and the volume of the antenna assembly 170 can be reduced, which is conducive to reducing the design restrictions on the appearance of the drone 1000. In other embodiments, the first antenna radiating unit 171 and the second antenna radiating unit 173 can adopt FPC (Flexible Printed Circuit) antenna and conformal antenna design.

[0040] In addition, the antenna assembly 170 may also receive and transmit radio frequency signals in a circular polarization manner. Specifically, in some embodiments, the first polarization direction includes a left-handed polarization direction, and the second polarization direction includes a right-handed polarization direction. In another embodiment, the first polarization direction includes a right-handed polarization direction, and the second polarization direction includes a left-handed polarization direction. In this way, it can be ensured that the antenna assembly 170 receives radio frequency signals in all directions and transmits radio frequency signals in any direction.

[0041] It should be pointed out that for a dipole antenna, the maximum direction of the radiation pattern is roughly the vertical direction along the length direction of the antenna radiation unit. When the first polarization direction and the second polarization direction are different, the radiation pattern coverage of a variety of different linear polarizations of the drone 1000 can be achieved.

[0042] To sum up, by setting the first antenna radiation unit 171 and the second antenna radiation unit 173, radio frequency signals in different polarization directions can be received and transmitted. Even if the drone 1000 is in motion, the antenna assembly 170 will not be unable to match the radio frequency signal due to changes in relative position, thereby ensuring the stability of communication of the drone 1000.

[0043] In addition, in other embodiments, the shapes of the first antenna radiating unit 171 and the second antenna radiating unit 173 may be the same or different. When the number of the first antenna radiating units 171 is at least two, the shapes of all the first antenna radiating units 171 may be completely the same, partially the same, or completely different. When the number of the second antenna radiating units 173 is at least two, the shapes of all the second antenna radiating units 173 may be completely the same, partially the same, or completely different.

[0044] It should be noted that in such an implementation, a radio frequency signal can be sent to the drone 1000 through the terminal device, so that the drone 1000 can act according to the radio frequency signal when receiving the radio frequency signal, thereby achieving the effect of controlling the drone 1000 to move, switch working states, and turn on and off corresponding functions of the drone 1000. In one implementation, the terminal device can transmit radio frequency signals along the first polarization direction and the second polarization direction, so that it can cooperate with the first antenna radiation unit 171 and the second radiation unit to achieve a good and stable communication effect. Terminal devices include but are not limited to mobile phones, tablet computers, servers, personal computers, wearable smart devices, other electronic devices, etc.

[0045] Please refer to Figure 1 In some embodiments, the arm 130 includes a rear arm 131. The first antenna radiation unit 171 is installed on the rear arm 131. In this way, the antenna assembly 170 can conveniently receive and transmit radio frequency signals in the first polarization direction.

[0046] Specifically, in the illustrated embodiment, the fuselage 110 has a nose 111, and the rear arm 131 is formed along a certain direction at a position of the fuselage 110 away from the nose 111. The first antenna radiating unit 171 is installed on the rear arm 131, so that the first antenna radiating unit 171 is located at the rear of the drone 1000, so that it can conveniently receive the radio frequency signal in the first polarization direction.

[0047] In addition, please combine Figure 1 and Figure 2 In some embodiments, the number of the first antenna radiating units 171 is two, the number of the rear arms 131 is two, and each first antenna radiating unit 171 is installed on a corresponding rear arm 131. The two rear arms 131 extend in different directions on the surface of the fuselage 110, respectively, so as to increase the coverage of the antenna assembly 170 for the radio frequency signal in the first polarization direction. In one embodiment, the angle formed between the axis of the rear arm 131 and the fuselage 110 is 60 degrees, so that the angle formed between the maximum pointing directions of the directional patterns corresponding to the two first antenna radiating units 171 is 60 degrees.

[0048] It can be understood that in other embodiments, the number of rear arms 131 can be three, four or more, the number of first antenna radiating units 171 can be three, four or more, and the number of first antenna radiating units 171 corresponds to the number of rear arms 131. The number of rear arms 131 and first antenna radiating units 171 can be determined according to a specific embodiment, or calibrated through actual testing, and other embodiments are not limited here.

[0049] Please refer to Figure 2 In some embodiments, the axis of the first antenna radiating unit 171 is parallel to the horizontal plane. In this way, the first antenna radiating unit 171 can receive and transmit radio frequency signals along the horizontal polarization direction.

[0050] Specifically, please combine Figure 1 When the drone 1000 is in a hovering state, the fuselage 110 is in a relatively stationary state in the horizontal direction, and the axis of the first antenna radiation unit 171 is parallel to the horizontal plane, so that the antenna assembly 170 can receive radio frequency signals in the horizontal polarization direction and transmit radio frequency signals in the horizontal polarization direction when the drone 1000 is in a hovering state.

[0051] Please refer to Figure 1 In some embodiments, the tripod 150 includes a front tripod 151. The second antenna radiation unit 173 is installed on the front tripod 151. In this way, the antenna assembly 170 can conveniently receive and transmit radio frequency signals in the second polarization direction.

[0052] Specifically, in the illustrated embodiment, the fuselage 110 has a nose 111, and an arm connected to the front tripod 151 is formed along a certain direction at a position of the fuselage 110 close to the nose 111. The second antenna radiation unit 173 is installed on the front tripod 151, so that the second antenna radiation unit 173 is located in front of the drone 1000, so that the radio frequency signal in the second polarization direction can be conveniently received.

[0053] In addition, please combine Figure 1 and Figure 2 In some embodiments, the number of the second antenna radiation units 173 is two, the number of the front legs 151 is two, and each second antenna radiation unit 173 is mounted on a corresponding front leg 151. The two front legs 151 extend in different directions on the surface of the fuselage 110, thereby increasing the coverage range of the antenna assembly 170 for the radio frequency signal in the second polarization direction.

[0054] It can be understood that in other embodiments, the number of front legs 151 can be three, four or more, the number of second antenna radiation units 173 can be three, four or more, and the number of second antenna radiation units 173 corresponds to the number of front legs 151. The number of front legs 151 and second antenna radiation units 173 can be determined according to a specific embodiment, or calibrated through actual testing, and other embodiments are not limited here.

[0055] Please refer to Figure 1 , Figure 3 and Figure 4 In some embodiments, the axis of at least one second antenna radiation unit 173 is parallel to the direction of gravity, and the axis of at least one other second antenna radiation unit 173 is inclined relative to the direction of gravity. In this way, the drone 1000 can receive and transmit radio frequency signals in the second polarization direction in both the moving state and the hovering state.

[0056] Specifically, in Figure 1 In the embodiment shown, the number of the second antenna radiation units 173 is two. Figure 3 and Figure 4 , the axis of one of the second antenna radiation units 173 is parallel to the direction of gravity, and the axis of the other second antenna radiation unit 173 is inclined relative to the direction of gravity. When the drone 1000 is in a hovering state, the axis of one of the second antenna radiation units 173 will be parallel to the direction of gravity, so that the antenna assembly 170 can receive and transmit RF signals in the vertical polarization direction. When the drone 1000 is in a moving state, since the drone 1000 will be inclined at a certain angle relative to the direction of gravity to achieve movement, the axis of the other second antenna radiation unit 173 will be parallel to the direction of gravity, so that the antenna assembly 170 can receive and transmit RF signals in the vertical polarization direction. The axis of the second antenna radiation unit 173 is parallel to the direction of gravity, which may mean that there is no angle between the axis of the second antenna radiation unit 173 and the direction of gravity, or it may mean that the angle formed between the axis of the second antenna radiation unit 173 and the direction of gravity is within a preset range. In one embodiment, the preset range is less than or equal to 10 degrees.

[0057] Please refer to Figure 4 In some embodiments, the angle a formed by the axis of the second antenna radiation unit 173 being tilted relative to the gravity direction is 30 degrees ± 2 degrees. In this way, when the drone 1000 is in motion and tilted relative to the gravity direction, it can also receive and transmit radio frequency signals in the second polarization direction.

[0058] Specifically, in one embodiment, the number of the second antenna radiation units 173 is two, and the angle a formed by the axis of one of the second antenna radiation units 173 being inclined relative to the gravity direction is 30 degrees. The angle formed by the axis of the second antenna radiation unit 173 being inclined relative to the gravity direction can be adjusted according to specific circumstances, or calibrated through actual testing. In one embodiment, the angle a is 30 degrees.

[0059] Please refer to Figure 1 , Figure 5-Figure 8 In some embodiments, the antenna assembly 170 includes at least one first circuit board 210, at least one second circuit board 230, and a functional circuit 250. The first circuit board 210 includes a first surface 211 and a second surface 213 opposite to each other. Each first antenna radiating unit 171 is mounted on the first surface 211 of a corresponding first circuit board 210. The second circuit board 230 includes a third surface 231 and a fourth surface 233 opposite to each other. Each second antenna radiating unit 173 is mounted on the third surface 231 of a corresponding second circuit board 230. The functional circuit 250 is provided on at least one of the first surface 211, the second surface 213, the third surface 231, and the fourth surface 233. The functional circuit 250 includes a mounting portion 251 and a connecting portion 253. The connecting portion 253 connects the mounting portion 251. The mounting portion 251 is used to mount the functional part 252. The connecting portion 253 is formed with a discontinuity so that the connecting portion 253 includes a first portion 255 and a second portion 257 spaced apart. The first portion 255 and the second portion 257 are connected by a decoupling connecting device 270. The decoupling connection device 270 is used to electrically connect the first part 255 and the second part 257 at the operating frequency of the functional circuit 250, and is used to equivalently disconnect at the operating frequency of the first antenna radiating unit 171 and / or the second antenna radiating unit 173. In this way, on the one hand, the operation of the functional circuit 250 can be guaranteed, and on the other hand, the decoupling connection device 270 can reduce or avoid the adverse effects of the connection part 253 on the performance of the first antenna radiating unit 171 and the second antenna radiating unit 173, thereby ensuring that the antenna assembly 170 can work normally.

[0060] Specifically, please combine Figure 5 and Figure 6 On the first circuit board 210, the first antenna radiation unit 171 is arranged on the first surface 211, and the functional circuit 250 is arranged on the second surface 213. Figure 7 and Figure 8 On the second circuit board 230, the second antenna radiation unit 173 is disposed on the third surface 231, and the functional circuit 250 is disposed on the fourth surface 233. In one embodiment, the operating frequency of the antenna assembly 170 is a frequency band where 2.4 GHz is located and a frequency band where 5.8 GHz is located. In another embodiment, the operating frequency of the functional circuit 250 is less than or equal to 10 MHz.

[0061] It can be understood that since the first part 255 and the second part 257 are electrically connected through the decoupling connecting device 270, when the functional circuit 250 receives a high-frequency RF signal (relative to the operating frequency of the functional circuit 250), the RF signal will not be able to be effectively transmitted between the first part 255 and the second part 257 due to the decoupling connecting device 270, thereby reducing the influence of the coupling between the first antenna radiating unit 171 on the first circuit board 210 and the functional circuit 250, and reducing the influence of the coupling between the second first antenna radiating unit 171 on the second circuit board 230 and the functional circuit 250, thereby reducing the influence on the radiation performance of the first antenna radiating unit 171 and the second antenna radiating unit 173.

[0062] Specifically, please combine Fig. 9 , Fig. 9 The curve graph shown is a comparison of the standing wave ratio of the port under different conditions. Among them, curve A corresponds to the case where the functional circuit 250 is connected (that is, the first part 255 and the second part 257 are directly connected), curve B corresponds to the case where only the first antenna radiation unit 171 exists (that is, the functional circuit 250 is not set), curve C corresponds to the case where the functional circuit 250 is disconnected (that is, the first part 255 and the second part 257 are directly disconnected), and curve D corresponds to the case of the implementation method of the present application. The horizontal axis represents the frequency (GHz), and the vertical axis represents the standing wave ratio of the port (dB). It can be seen from the figure that the first antenna radiation unit 171 in the implementation method of the present application can also achieve good antenna performance in the presence of the functional circuit 250.

[0063] In addition, for the implementation manner in which the first antenna radiation unit 171 is arranged on the first surface 211 and the functional circuit 250 is arranged on the first surface 211, the implementation manner in which the first antenna radiation unit 171 is arranged on the first surface 211 and the functional circuit 250 is arranged on the first surface 211 and the second surface 213, the implementation manner in which the second antenna radiation unit 173 is arranged on the third surface 231 and the functional circuit 250 is arranged on the third surface 231, and the implementation manner in which the second antenna radiation unit 173 is arranged on the third surface 231 and the functional circuit 250 is arranged on the third surface 231 and the fourth surface 233, the specific principles thereof may refer to the specific principles of the above-mentioned implementation manners and will not be elaborated herein.

[0064] In addition, in other embodiments, the functional circuit 250 of the first circuit board 210 and the functional circuit 250 of the second circuit board 230 may be the same or different.

[0065] It should be pointed out that please combine Figure 4 and Fig.10It can be understood that, by setting the position of the second antenna radiation unit 173 on the second circuit board 230, the axis of the second antenna radiation unit 173 can be tilted relative to the gravity direction while the orientation of the overall structure of the second circuit board 230 remains unchanged. In the case where there are multiple second antenna radiation units 173, it can be ensured that each second antenna radiation unit 173 can be connected to the front bracket 151 in the same connection manner without the need to adjust the installation position of the second antenna radiation unit 173 on the front bracket 151.

[0066] In some embodiments, the decoupling connection device 270 includes at least one of an inductor, a filter, and a filter circuit. It can be understood that the inductor, the filter, and the filter circuit have the function of transmitting low-frequency signals and blocking high-frequency signals, so that when the radio frequency signal is received by the functional circuit 250, the radio frequency signal is blocked by the decoupling connection device 270 and cannot be effectively transmitted along the functional circuit 250, and relative to the working frequency of the functional circuit 250 and the DC form of the electrical signal, it can be equivalent to a short circuit, so as not to affect the normal function of the functional circuit 250.

[0067] In some embodiments, the difference between the self-resonant frequency of the inductor and the operating frequency of the first antenna radiating unit 171 or the second antenna radiating unit 173 is less than or equal to a preset frequency threshold. The impedance of the inductor at the self-resonant frequency is large, and the inductor with a self-resonant frequency near the operating frequency of the first antenna radiating unit 171 or the second antenna radiating unit 173 can be selected to form an equivalent circuit break for the radio frequency signal.

[0068] Specifically, the preset frequency threshold may be adjusted according to the operating frequency of the first antenna radiation unit 171 or the second antenna radiation unit 173, or may be calibrated through actual testing.

[0069] In some embodiments, the filter includes a low-pass filter, and the filter circuit includes a low-pass filter circuit. In this way, the high-frequency blocking effect of the decoupling connection device 270 on the radio frequency signal can also be ensured.

[0070] In some embodiments, the functional circuit 250 is a lighting circuit and the functional component 252 is a light source.

[0071] Specifically, in one embodiment, the light-emitting circuit includes a signal shaping and amplifying driving circuit, a power supply voltage stabilizing circuit, a constant current circuit, and an RC oscillator. The light source is a light-emitting LED lamp. The light-emitting LED lamp can be formed with a plurality of pixels, and the light-emitting circuit can control each light-emitting LED lamp to turn on and off. In addition, in some embodiments, the light source also includes a light-emitting circuit.

[0072] Please refer to Figure 5 and Figure 6In some embodiments, the connection portion 253 at least partially extends parallel to the length direction of the first antenna radiating unit 171. In this way, the connection portion 253 and the first antenna radiating unit 171 can be easily processed.

[0073] It can be understood that the connection portion 253 at least partially extends parallel to the length direction of the first antenna radiating unit 171, and the first portion 255 may extend parallel to the length direction of the first antenna radiating unit 171, the second portion 257 may extend parallel to the length direction of the first antenna radiating unit 171, or the first portion 255 and the second portion 257 may extend parallel to the length direction of the first antenna radiating unit 171. In the illustrated embodiment, the length direction of the first antenna radiating unit 171 is parallel to the horizontal direction.

[0074] In addition, in other embodiments, please refer to Figure 7 and Figure 8 The connection portion 253 may extend at least partially parallel to the length direction of the second antenna radiation unit 173, so that the connection portion 253 and the second antenna radiation unit 173 can be easily processed, or may extend at least partially parallel to the length direction of the first antenna radiation unit 171 and the second antenna radiation unit 173, so that the connection portion 253 and the first antenna radiation unit 171 and the second antenna radiation unit 173 can be easily processed. The specific principle is similar or the same as the principle of the above-mentioned embodiment, and will not be repeated here.

[0075] In some embodiments, the length of the first portion 255 and the length of the second portion 257 are both less than a preset length threshold.

[0076] Specifically, the preset length threshold can be adjusted according to the operating frequency of the first antenna radiation unit 171 or the second antenna radiation unit 173. In one embodiment, the preset length threshold is one quarter wavelength of the operating frequency of the first antenna radiation unit 171, so as to avoid the first part 255 and the second part 257 being longer than one quarter wavelength of the operating frequency of the first antenna radiation unit 171, thereby preventing the first antenna radiation unit 171 and the functional circuit 250 from coupling under high-frequency RF signals and generating energy loss. In some embodiments, the value range of the preset length threshold can be [8,10] mm. It can be understood that in other embodiments, the preset length threshold is one quarter wavelength of the operating frequency of the second antenna radiation unit 173. The specific principle is similar or the same as that of the above-mentioned embodiment, and will not be elaborated in detail here.

[0077] In addition, in other embodiments, the length of the connecting portion 253 is neither equal to a quarter wavelength of the operating frequency of the first antenna radiation unit 171 nor equal to a half wavelength of the operating frequency of the first antenna radiation unit 171 .

[0078] Please refer to Figure 5 and Figure 6 In some embodiments, the functional circuit 250 is disposed on the second surface 213, and the first antenna radiation unit 171 and the functional circuit 250 have an overlapping area on the orthographic projection surface of the first circuit board 210. In this way, the size of the first circuit board 210 can be reduced.

[0079] Specifically, please combine Figure 5 and Figure 6 , the projection of the first antenna radiation unit 171 provided on the first surface 211 and the functional circuit 250 provided on the second surface 213 in the direction perpendicular to the first circuit board 210 forms an overlapping area. It can be understood that by adjusting the positions of the first antenna radiation unit 171 and the functional circuit 250 on the first circuit board 210, the size of the overlapping area can be adjusted, and then the size of the first circuit board 210 can be conveniently adjusted, which is conducive to reducing the size of the antenna assembly 170. In addition, in the illustrated embodiment, the orthographic projection surface of the first circuit board 210 refers to the projection surface formed in the direction perpendicular to the first circuit board 210, and the orthographic projection surface of the second circuit board 230 refers to the projection surface formed in the direction perpendicular to the second circuit board 230.

[0080] In addition, it can be understood that in other embodiments, the functional circuit 250 can be arranged on the fourth surface 233, and the second antenna radiation unit 173 and the functional circuit 250 have an overlapping area on the orthographic projection surface of the second circuit board 230, thereby reducing the size of the second circuit board 230. Alternatively, the functional circuit 250 can be arranged on the second surface 213 and the fourth surface 233, and the first antenna radiation unit 171 and the functional circuit 250 have an overlapping area on the orthographic projection surface of the first circuit board 210, and the second antenna radiation unit 173 and the functional circuit 250 have an overlapping area on the orthographic projection surface of the second circuit board 230, thereby reducing the size of the first circuit board 210 and the second circuit board 230. The specific principle is the same or similar to the principle of the above-mentioned embodiment. Other embodiments are not specifically limited here.

[0081] Please refer to Fig.11 and Fig.12 In some embodiments, the functional circuit 250 includes at least two mounting portions 251. At least two mounting portions 251 are arranged along the length direction of the first antenna radiation unit 171. A connecting portion 253 is connected between two adjacent mounting portions 251. Figure 6When the functional circuit 250 is a light-emitting circuit, a plurality of functional components 252 (light sources) disposed on the mounting portion 251 may form a light strip.

[0082] Specifically, please combine Fig.11 and Fig.12 , the first part 255, the decoupling connection device 270 and the second part 257 are sequentially connected to form a connection portion 253, and the connection portion 253 is connected to one mounting portion 251 through the first part 255, and is connected to another mounting portion 251 through the second part 257. The first part 255 is a structure of three parallel wires, the second part 257 is a structure of three parallel wires, and the number of decoupling connection devices 270 is three. Each wire of the first part 255 is sequentially connected to a corresponding decoupling connection device 270 and a corresponding wire of the second part 257, so that the connection portion 253 forms three parallel complete electrical connection structures, so that the electrical signal of the mounting portion 251 on one side of the connection portion 253 can be transmitted to the mounting portion 251 on the other side of the connection portion 253 through the three parallel electrical connection structures. In addition, in other embodiments, the number of parallel electrical connection structures in the connection portion 253 can be one, two, or more than three, which is not specifically limited here.

[0083] In addition, Fig.11 In the illustrated embodiment, the number of mounting portions 251 is 5, and the number of connecting portions 253 is 4. The 5 mounting portions 251 are sequentially arranged along the length direction of the first antenna radiating unit 171, and a connecting portion 253 is connected between every two adjacent mounting portions 251, so that electrical signals can be transmitted between the two mounting portions 251 that are farthest apart along the length direction of the first antenna radiating unit 171.

[0084] In addition, when the connecting portion 253 transmits the electrical signal at the mounting portion 251 on one side to the mounting portion 251 on the other side, the connection area between the connecting portion 253 and the first circuit board 210 can be increased to prevent the connecting portion 253 from falling off the first circuit board 210.

[0085] In addition, in other embodiments, the functional circuit 250 includes at least two mounting portions 251, and the at least two mounting portions 251 are arranged along the length direction of the second antenna radiation unit 173, and a connecting portion 253 is connected between two adjacent mounting portions 251. The specific principle is similar or the same as the principle of the above-mentioned embodiment, and will not be repeated here.

[0086] Please refer to Figure 7 and Figure 8In some embodiments, the functional circuit 250 includes a first functional circuit 310 and a second functional circuit 330. The first functional circuit 310 is disposed on the third surface 231. The second functional circuit 330 is disposed on the fourth surface 233. The first functional circuit 310 and the second functional circuit 330 include a connecting portion 253 and a mounting portion 251. In this way, the applicability of the antenna assembly 170 can be improved.

[0087] Specifically, in Figure 7 and Figure 8 In the illustrated embodiment, along the orthographic projection direction of the second circuit board 230, there is an overlapping area between the projections of the first functional circuit 310 and the second functional circuit 330. It can be understood that by providing the first functional circuit 310 and the second functional circuit 330, the antenna assembly 170 can realize more functions (such as carrying more functional components 252) without increasing the size of the second circuit board 230, thereby improving applicability.

[0088] In addition, it can be understood that in other embodiments, the first functional circuit 310 can be arranged on the first surface 211, and the second functional circuit 330 can be arranged on the second surface 213, or the first functional circuit 310 can be arranged on the first surface 211 and the third surface 231, and the second functional circuit 330 can be arranged on the second surface 213 and the fourth surface 233, thereby improving the applicability of the antenna assembly 170. The specific principle is similar to or the same as the principle of the above-mentioned embodiment, and other embodiments are not specifically limited here.

[0089] Please refer to Figure 7 and Figure 8 In some embodiments, the second antenna radiation unit 173 and the first functional circuit 310 do not have an overlapping area on the orthographic projection surface of the second circuit board 230. The second antenna radiation unit 173 and the second functional circuit 330 do not have an overlapping area on the orthographic projection surface of the second circuit board 230. In this way, the coupling effect between the second antenna radiation unit 173 and the functional circuit 250 can be avoided or minimized.

[0090] Specifically, in Figure 7 and Figure 8In the illustrated embodiment, since the second antenna radiation unit 173 and the functional circuit 250 are easily coupled under high-frequency radio frequency signals, there is no overlapping area between the second antenna radiation unit 173 and the first functional circuit 310 on the orthographic projection surface of the second circuit board 230, which can avoid the second antenna radiation unit 173 and the first functional circuit 310 being too close to each other and increasing the coupling effect between the two, and the same is true between the second antenna radiation unit 173 and the second functional circuit 330. In this case, the coupling effect between the second antenna radiation unit 173 and the first functional circuit 310 can be reduced, and the coupling effect between the second antenna radiation unit 173 and the second functional circuit 330 can be reduced. In one embodiment, the distance between the second antenna radiation unit 173 and the first functional circuit 310 on the orthographic projection surface of the second circuit board 230 is 5 mm.

[0091] In addition, it can be understood that in other embodiments, the first antenna radiation unit 171 and the first functional circuit 310 may not have an overlapping area on the orthographic projection surface of the first circuit board 210, and the first antenna radiation unit 171 and the second functional circuit 330 may not have an overlapping area on the orthographic projection surface of the first circuit board 210, thereby reducing the coupling effect between the first antenna radiation unit 171 and the first functional circuit 310 and the second functional circuit 330. Alternatively, the first antenna radiation unit 171 and the first functional circuit 310 may not have an overlapping area on the orthographic projection surface of the first circuit board 210, the first antenna radiation unit 171 and the second functional circuit 330 may not have an overlapping area on the orthographic projection surface of the first circuit board 210, and the second antenna radiation unit 173 and the first functional circuit 310 may not have an overlapping area on the orthographic projection surface of the second circuit board 230. There is no overlapping area between the second antenna radiation unit 173 and the second functional circuit 330 on the orthographic projection surface of the second circuit board 230, so that the coupling effect between the first antenna radiation unit 171 and the first functional circuit 310 and the second functional circuit 330 can be reduced, and the coupling effect between the second antenna radiation unit 173 and the first functional circuit 310 and the second functional circuit 330 can be reduced. The principle of the specific implementation can refer to the specific principle of the above implementation, and will not be elaborated in detail here to avoid redundancy.

[0092] Please refer to Figure 7 and Figure 8 In some embodiments, the connection portion 253 of the first functional circuit 310 and the connection portion 253 of the second functional circuit 330 are disposed close to the second antenna radiation unit 173. In this way, the coupling effect can be further reduced.

[0093] Specifically, in the area formed by the second antenna radiation unit 173 and the first functional circuit 310 on the orthographic projection surface of the second circuit board 230, the first functional circuit 310 is provided with two decoupling connecting devices 270 in a direction close to the second antenna radiation unit 173, further reducing the coupling between the connecting portion 253 of the first functional circuit 310 and the second antenna radiation unit 173. The second functional circuit 330 is provided with two decoupling connecting devices 270 in a direction close to the second antenna radiation unit 173, further reducing the coupling between the connecting portion 253 of the second functional circuit 330 and the second antenna radiation unit 173.

[0094] In addition, it is understandable that Figure 7 In the illustrated embodiment, the first functional circuit 310 can determine whether to set the decoupling connection device 270 according to the wiring length of the connection portion 253. In one embodiment, the first functional circuit 310 sets a decoupling connection device 270 in a direction close to the second antenna radiation unit 173.

[0095] In addition, it can be understood that in other embodiments, the connection portion 253 of the first functional circuit 310 and the connection portion 253 of the second functional circuit 330 are arranged close to the first antenna radiation unit 171, so that the coupling effect can also be further reduced. The specific principle is similar to or the same as the principle of the above-mentioned embodiment, and is not specifically limited here.

[0096] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. are intended to mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. Although the embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application, and those of ordinary skill in the art may make changes, modifications, substitutions and modifications to the above embodiments within the scope of the present application.

Claims

1. A drone, characterized in that: include: body; A machine arm connected to the machine body; A tripod connected to the machine arm; and An antenna assembly, the antenna assembly comprising: at least one first antenna radiating unit, the first antenna radiating unit having a first polarization direction, the first antenna radiating unit being mounted on the arm; and at least one second antenna radiating unit, the second antenna radiating unit having a second polarization direction, the first polarization direction being different from the second polarization direction, and the second antenna radiating unit being mounted on the tripod; The antenna assembly further comprises: At least one first circuit board, the first circuit board comprising a first surface and a second surface opposite to each other, and at least one first antenna radiation unit is mounted on the first surface of the at least one first circuit board; at least one second circuit board, the second circuit board comprising a third surface and a fourth surface opposite to each other, at least one second antenna radiation unit being mounted on the third surface of the at least one second circuit board; and a functional circuit, the functional circuit being arranged on at least one of the first surface, the second surface, the third surface or the fourth surface, the functional circuit comprising a mounting portion and a connecting portion, the connecting portion being connected to the mounting portion, the mounting portion being used to mount a functional component, the connecting portion being formed with a discontinuity so that the connecting portion comprises a first portion and a second portion spaced apart, the first portion and the second portion being connected by a decoupling connecting device; The decoupling connection device is used to electrically connect the first part and the second part at the operating frequency of the functional circuit, and / or the decoupling connection device is used to equivalently disconnect the first antenna radiating unit and / or the second antenna radiating unit at the operating frequency.

2. The drone according to claim 1, characterized in that: The first polarization direction includes a horizontal polarization direction, and the second polarization direction includes a vertical polarization direction.

3. The drone according to claim 1, characterized in that: The first polarization direction includes a left-hand polarization direction, and the second polarization direction includes a right-hand polarization direction; or The first polarization direction includes a right-hand polarization direction, and the second polarization direction includes a left-hand polarization direction.

4. The drone according to claim 1, characterized in that: The arm comprises a rear arm, and the first antenna radiation unit is installed on the rear arm.

5. The drone according to claim 4, characterized in that: The number of the first antenna radiation units is at least two, the number of the rear machine arms is at least two, and each of the first antenna radiation units is installed on a corresponding one of the rear machine arms.

6. The drone according to claim 5, characterized in that: The axis of the first antenna radiation unit is parallel to the horizontal plane.

7. The drone according to claim 1, characterized in that: The tripod comprises a front tripod, and the second antenna radiation unit is installed on the front tripod.

8. The drone according to claim 7, characterized in that: The number of the second antenna radiation units is at least two, the number of the front tripods is at least two, and each of the second antenna radiation units is installed on a corresponding one of the front tripods.

9. The drone according to claim 8, characterized in that: The axis of at least one of the second antenna radiation elements is parallel to the direction of gravity, and the axis of at least one other of the second antenna radiation elements is inclined relative to the direction of gravity.

10. The drone according to claim 9, characterized in that: The angle formed by the axis of the second antenna radiation unit being inclined relative to the direction of gravity is 30 degrees ± 2 degrees.

11. The drone according to claim 1, characterized in that: The functional circuit is a light-emitting circuit, and the functional component is a light source.

12. The drone according to claim 11, characterized in that: The light source includes a light emitting circuit.

13. The drone according to claim 1, characterized in that: The connecting portion extends at least partially parallel to a length direction of the first antenna radiating element and / or the second antenna radiating element.

14. The drone according to claim 1, characterized in that: The length of the first portion and the length of the second portion are both smaller than a preset length threshold.

15. The drone according to claim 14, characterized in that: The preset length threshold is one quarter wavelength of the operating frequency of the first antenna radiating unit or the second antenna radiating unit.

16. The drone according to claim 1, characterized in that: The functional circuit is arranged on the second surface, and the first antenna radiation unit and the functional circuit have an overlapping area on the orthographic projection surface of the first circuit board; and / or The functional circuit is arranged on the fourth surface, and there is an overlapping area between the second antenna radiation unit and the functional circuit on the orthographic projection surface of the second circuit board.

17. The drone according to claim 16, characterized in that: The functional circuit includes at least two mounting parts, and the at least two mounting parts are arranged along the length direction of the first antenna radiation unit or the second antenna radiation unit, and one connecting part is connected between two adjacent mounting parts.

18. The drone according to claim 1, characterized in that: The functional circuit includes a first functional circuit and a second functional circuit, the first functional circuit is arranged on the first surface and / or the third surface, the second functional circuit is arranged on the second surface and / or the fourth surface, and the first functional circuit and the second functional circuit include the connecting part and the mounting part.

19. The drone according to claim 18, characterized in that: There is no overlapping area between the first antenna radiation unit and the first functional circuit on the orthographic projection surface of the first circuit board, and there is no overlapping area between the first antenna radiation unit and the second functional circuit on the orthographic projection surface of the first circuit board; and / or There is no overlapping area between the second antenna radiation unit and the first functional circuit on the orthographic projection surface of the second circuit board, and there is no overlapping area between the second antenna radiation unit and the second functional circuit on the orthographic projection surface of the second circuit board.

20. The drone according to claim 18, characterized in that: The connection part of the first functional circuit and the connection part of the second functional circuit are arranged close to the first antenna radiation unit or the second antenna radiation unit.

21. The drone according to claim 1, characterized in that: The decoupling connection device includes at least one of an inductor, a filter and a filter circuit.

22. The drone according to claim 21, characterized in that: A difference between a self-resonant frequency of the inductor and an operating frequency of the first antenna radiating unit or the second antenna radiating unit is less than or equal to a preset frequency threshold.

23. The drone according to claim 21, characterized in that: The filter comprises a low-pass filter, and the filter circuit comprises a low-pass filter circuit.

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