WO2017147788A1

WO2017147788A1 - Antenna assembly, ground component and unmanned aerial vehicle

Info

Publication number: WO2017147788A1
Application number: PCT/CN2016/075220
Authority: WO
Inventors: 丘华良; 徐兴旺; 冯建刚; 唐尹
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2016-03-01
Filing date: 2016-03-01
Publication date: 2017-09-08
Also published as: CN107078381B; CN107078381A

Abstract

An antenna assembly, a ground plate and an unmanned aerial vehicle. The antenna assembly comprises an antenna, an antenna circuit board matching the antenna, and a ground component, wherein the antenna circuit board is connected to the antenna; a metal shielding cover is arranged on the antenna circuit board; the metal shielding cover is connected to a ground line in the antenna circuit board; the ground component comprises a ground plate with conductive performance; and the ground plate is electrically connected to the metal shielding cover so as to improve the gain of the antenna in the antenna assembly.

Description

Antenna assembly, grounding unit and drone

Technical field

The present invention relates to the field of aircraft technology, and in particular, to an antenna assembly, a grounding component, and a drone.

Background technique

The drone is a carrier that is controlled by radio remote control equipment, such as unmanned aerial vehicles, unmanned vehicles, unmanned ships, etc. Because the drone has the advantages of small size and flexibility, the drone is more A wide range of applications in the field of technology.

In the actual use process, in order to realize the positioning of the unmanned aerial vehicle, a Global Positioning System (GPS) antenna is needed on the UAV, and the GPS antenna can realize the positioning of the UAV by receiving the satellite signal. In most technical fields, such as military and scientific research technology, the accuracy of positioning of the drone is relatively high, which requires a GPS antenna disposed on the drone to have a higher gain. However, in the prior art, Due to the limitation of the UAV's volume, the gain of the GPS antenna is limited, which in turn affects the accuracy of positioning the UAV.

Summary of the invention

The antenna component, the grounding component and the unmanned aerial vehicle provided by the embodiments of the invention are used for improving the gain of the antenna in the antenna component.

In a first aspect, an embodiment of the present invention provides an antenna assembly, including an antenna, an antenna circuit board matched with the antenna, and a grounding component, where

The antenna circuit board is connected to the antenna, and the antenna circuit board is provided with a metal shield, and the metal shield is connected to a ground line in the antenna circuit board;

The grounding member includes a ground plate having electrical conductivity, and the ground plate is electrically connected to the metal shield.

In a second aspect, an embodiment of the present invention provides a grounding component, which is applied to an antenna component, where the antenna component includes a grounded metal shield, wherein

The grounding member includes a grounding plate, the grounding plate has electrical conductivity, and the grounding plate is used for Electrically connected to the metal shield.

In a third aspect, an embodiment of the present invention provides a drone including an antenna assembly, the antenna assembly including an antenna, a circuit board matched with the antenna, and a grounding component, where

An antenna component, a grounding component, and a drone according to an embodiment of the present invention, wherein the antenna component includes an antenna, an antenna circuit board matched with the antenna, and a grounding component, wherein the antenna is connected to the antenna circuit board, and the antenna circuit board is provided with a metal shield, the metal shield is connected to a ground wire in the antenna circuit board, the grounding member includes a grounding plate having electrical conductivity, and the grounding plate is electrically connected to the metal shield to ground the grounding plate, so that the grounding member can serve as an antenna component The ground plane of the antenna in the antenna increases the area of the ground plane of the antenna in the antenna assembly, thereby increasing the gain of the antenna.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic structural view of an antenna assembly provided by the present invention;

2 is a schematic diagram showing the relationship between the gain of the antenna and the area of the ground plane provided by the present invention;

3A is a schematic structural view 1 of a grounding member provided by the present invention;

3B is a schematic structural view 2 of a grounding member provided by the present invention;

4 is a schematic structural view 3 of a grounding member provided by the present invention;

Figure 5 is a schematic structural view 4 of the grounding member provided by the present invention;

Figure 6 is a schematic structural view 5 of the grounding member provided by the present invention;

Figure 7 is a schematic structural view 6 of the grounding member provided by the present invention;

Figure 8 is a schematic structural view 7 of the grounding member provided by the present invention;

9A is a schematic front structural view of an antenna circuit board provided by the present invention;

9B is a schematic structural diagram of a back surface of an antenna circuit board according to the present invention;

Figure 10 is a schematic structural view 1 of the drone provided by the present invention;

11 is a schematic structural view of a drone provided by the present invention.

12 is a schematic structural view 1 of a metal cavity provided by the present invention;

Figure 13 is a schematic structural view 2 of a metal cavity provided by the present invention;

Figure 14 is a schematic structural view of a second insulating layer provided by the present invention;

15 is a schematic diagram showing the relationship between an upper casing and a grounding plate of the unmanned aerial vehicle provided by the present invention;

FIG. 16 is a schematic diagram of an assembly structure of an antenna assembly and a drone provided by the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the antenna assembly of the embodiment of the present invention, a grounding component is added to improve the area of the grounding surface of the antenna, thereby improving the gain of the antenna. The antenna according to the embodiment of the present invention can be used for a drone, and the drone can be used. For an unmanned aerial vehicle, an unmanned vehicle, an unmanned vehicle, etc., the antenna assembly and the unmanned aerial vehicle will be described in detail below through specific embodiments.

1 is a schematic structural diagram of an antenna assembly according to the present invention. Referring to FIG. 1, the antenna assembly includes an antenna 101, an antenna circuit board 102 matched with an antenna, and a grounding member 103. The antenna circuit board 102 is connected to the antenna 101. A metal shield 1021 is disposed on the antenna circuit board 102, and the metal shield 1021 is connected to a ground line in the antenna circuit board 102. The grounding member 103 includes a grounding plate 1031 having an electrically conductive property, and the grounding plate 1031 is electrically connected to the metal shield 1021.

In an actual application process, the antenna 101 in the antenna assembly is used for transmitting and receiving signals, the antenna circuit board 102 in the antenna assembly is matched with the antenna 101, and the antenna circuit board 102 is connected to the antenna 101. The circuitry in antenna circuit board 102 is used to process the transmit and receive signals of antenna 101. The antenna circuit board 102 includes a ground line, and the metal shield 1021 disposed on the antenna circuit board 102 is connected to a ground line in the antenna circuit board 102 to ground the metal shield 1021. In actual application, the antenna circuit board 102 may include a plurality of independent circuits, such as signal receiving circuits, control circuits, and the like. Optionally, all the circuits in the antenna circuit board 102 can be disposed in the metal shield 1021, or A portion of the circuitry in the antenna circuit board is disposed within the metal shield 1021. By disposing the circuit in the antenna circuit board in the metal shield 1021, interference of external signals on the transmission and reception signals of the circuits in the metal shield 1021 can be effectively reduced. The grounding member 103 includes a grounding plate 1031 having an electrically conductive property, and the grounding plate 1031 is electrically connected to the metal shield 1021. Since the metal shield 1021 is grounded, the ground plate 1031 is also grounded so that the grounding member can serve as a ground plane of the antenna.

In the actual application process, the area of the ground plane of the antenna has a certain relationship with the gain of the antenna. Hereinafter, the relationship between the gain of the antenna and the area of the ground plane will be described in detail with reference to FIG. 2 .

2 is a schematic diagram showing the relationship between the gain of the antenna and the area of the ground plane provided by the present invention. Referring to FIG. 2, in the coordinate axis shown in FIG. 2, the horizontal axis represents the area of the ground plane of the antenna, and the unit is square millimeter, and the vertical axis represents the magnitude of the gain increase of the antenna, and the unit is decibel (dB). As can be seen from FIG. 2, the larger the area of the ground plane of the antenna, the higher the gain of the antenna. For example, when the area of the ground plane of the antenna is increased from 40*40 square millimeters to 50*50 square millimeters, the gain of the antenna is increased by 1.5 decibels. Therefore, in the embodiment of the present invention, by adding a grounding member to the antenna assembly, the grounding member can serve as a grounding surface of the antenna, increasing the area of the grounding surface of the antenna, thereby improving the gain of the antenna in the antenna assembly.

An antenna assembly provided by an embodiment of the present invention includes an antenna, an antenna circuit board matched with the antenna, and a grounding component, wherein the antenna is connected to the antenna circuit board, and the antenna circuit board is provided with a metal shield, the metal shield and the antenna circuit board. The grounding wire is connected, the grounding component includes a grounding plate having electrical conductivity, and the grounding plate is electrically connected to the metal shielding cover to ground the grounding plate, so that the grounding component can serve as a grounding surface of the antenna in the antenna component, and the antenna component is enlarged. The area of the ground plane of the antenna, which in turn increases the gain of the antenna.

The grounding component may further include an insulating layer to further improve the signal-to-noise ratio of the antenna in the antenna assembly. For details, please refer to the embodiment shown in FIG. 3A-3B. .

FIG. 3A is a schematic structural view 1 of a grounding member provided by the present invention. On the basis of the embodiment shown in FIG. 1 , referring to FIG. 3A , the grounding member 103 may further include a first insulating layer 1032 disposed on the first side of the grounding plate 1031 and having the first insulating layer 1032 thereon. The first through hole 10321, the ground plate 1031 is electrically connected to the metal shield 1021 through the first through hole 10321.

In the embodiment shown in FIG. 3A, the grounding member includes a ground plate and a first insulating layer 1032. Both the ground plate 1031 and the first insulating layer 1032 can shield the interference signal. By grounding The component 103 is disposed under the antenna in the antenna assembly, which can further reduce the interference of the external signal on the antenna, thereby improving the signal-to-noise ratio of the antenna. In an actual application, the first insulating layer 1032 may be an insulating foam, an insulating plastic, or the like. Preferably, the first insulating layer 1032 may be an insulating double-sided tape having a first through hole on the surface, and the insulating double One side of the adhesive is attached to the ground plate 1031, and the other side is attached to the antenna circuit board, and the metal shield 1021 and the first through hole 10321 have overlapping portions. The insulating double-sided tape is generally thin, and the ground plate 1031 can be electrically connected to the metal shield 1021 through the first through hole 10321 under the external force. Of course, in order to ensure that the grounding plate 1031 has a relatively reliable electrical connection with the metal shield 1021 through the first through hole 10321, a conductive member may be disposed at the first through hole 10321, and the conductive member is respectively connected to the ground plate 1031 and the metal shield. 1021 is connected, and the grounding plate 1031 and the metal shield 1021 are electrically connected by the conductive member.

On the basis of the embodiment shown in FIG. 3A, the shape of the first through hole 10321 is the same as the shape of the lower surface of the metal shield 1021, and the area of the first through hole 10321 is greater than or equal to the area of the lower surface of the metal shield 1021. The first through hole 10321 is disposed opposite to the metal shield 1021, so that the maximum contact area between the metal shield 1021 and the ground plate 1031 is ensured, thereby further ensuring the reliability of the electrical connection between the ground plate and the metal shield. . It should be noted that, in the actual application process, as long as the grounding plate 1031 can be electrically connected to the metal shield 1021 through the first through hole 10321, the size of the first through hole can be set according to actual needs, and the present invention does not Specifically limited.

FIG. 3B is a second schematic structural view of a grounding member provided by the present invention. On the basis of the embodiment shown in FIG. 1 , referring to FIG. 3B , the grounding member 103 may further include a second insulating layer 1033 disposed on the second side of the ground plate 1031 .

In the embodiment shown in FIG. 3B, the grounding member 103 includes a ground plate 1031 and a second insulating layer 1033. Both the grounding plate 1031 and the second insulating layer 1033 can shield the interference signal. By placing the grounding component 103 under the antenna in the antenna assembly, the external interference to the antenna can be reduced, thereby improving the signal noise of the antenna. ratio. In an actual application, the second insulating layer may be an insulating foam, an insulating plastic, or the like. Preferably, the second insulating layer 1033 may be disposed on the second side of the grounding plate by gluing.

On the basis of the embodiment shown in FIG. 3B, further, the second insulating layer 1033 may be provided with a second through hole so that the ground plate has a grounding port.

On the basis of the embodiment shown in FIG. 1, the grounding member 103 may further include two insulating layers to further improve the signal-to-noise ratio of the antenna in the antenna assembly. For details, please refer to FIG. Example.

4 is a schematic structural view 3 of a grounding plate member provided by the present invention. Referring to FIG. 4, the grounding member 103 includes a grounding plate 1031, a first insulating layer 1032, and a second insulating layer 1033. The first insulating layer 1032 is disposed on the first side of the grounding plate 1031, and has a first insulating layer 1032. The first through hole 10321, the ground plate 1031 is electrically connected to the metal shield 1021 through the first through hole 10321, and the second insulating layer 1033 is disposed on the second side of the ground plate 1031.

In the embodiment shown in FIG. 4, the grounding member 103 includes a ground plate 1031, a first insulating layer 1032, and a second insulating layer 1033. The grounding plate 1031, the first insulating layer 1032, and the second insulating layer 1033 can both shield the interference signal. By disposing the grounding member 103 below the antenna in the antenna assembly, the external interference to the antenna can be further reduced, thereby improving the signal-to-noise ratio of the antenna. Further, the second insulating layer 1033 may be provided with a second through hole so that the ground plate has a grounding port.

Based on the embodiment shown in FIG. 1 to FIG. 4, the grounding member 103 may further include a shielding plate 1034. Hereinafter, the grounding member 103 including the shielding plate 1034 will be described in detail through the embodiment shown in FIGS. 5-8. .

5 is a schematic structural view of a grounding member provided by the present invention. On the basis of the embodiment shown in FIG. 1, referring to FIG. 5, a second side of the grounding plate 1031 is provided with a shielding plate 1034, a grounding plate 1031 and a shielding plate 1034. A fourth insulating layer 1035 is disposed therebetween, and the shielding plate 1034 has electrical conductivity.

In the embodiment shown in FIG. 5, the grounding member 103 includes a ground plate 1031, a shield plate 1034, and a fourth insulating layer. The grounding plate 1031, the shielding plate 1034, and the fourth insulating layer 1035 can all shield the interference signal. By disposing the grounding member 103 below the antenna in the antenna assembly, interference from the outside to the antenna can be reduced, thereby improving the signal-to-noise ratio of the antenna. In an actual application process, the fourth insulating layer 1035 may be an insulating foam, an insulating plastic, or the like. Preferably, the fourth insulating layer 1035 may be an insulating double-sided tape, one side of the fourth insulating layer 1035 is attached to the second side of the ground plate, and the other side of the fourth insulating layer 1035 is attached to the shielding plate 1034.

FIG. 6 is a schematic structural view 5 of a grounding member provided by the present invention. On the basis of the embodiment shown in FIG. 3A, referring to FIG. 6, the first side of the grounding plate 1031 is provided with a first insulating layer 1032 having a first through hole 10321, and a shielding plate is disposed on the second side of the grounding plate 1031. 1034. A fourth insulating layer 1035 is disposed between the ground plate 1031 and the shielding plate 1034.

In the embodiment shown in FIG. 6, the grounding member includes a grounding plate, a first insulating layer, and a shielding plate. And the fourth insulating layer, the grounding plate, the first insulating layer, the shielding plate and the fourth insulating layer can all shield the interference signal. By placing the grounding member under the antenna in the antenna assembly, the interference from the outside to the antenna can be reduced, thereby improving the signal-to-noise ratio of the antenna. It should be noted that the fourth insulating layer in the embodiment shown in FIG. 6 is the same as the fourth insulating layer in the embodiment shown in FIG. 5, and details are not described herein.

FIG. 7 is a schematic structural view 6 of a grounding member provided by the present invention. On the basis of the embodiment shown in FIG. 3B, referring to FIG. 7, the second side of the ground plate 1031 is sequentially provided with a third insulating layer 1036, a shielding plate 1034, and a second insulating layer 1033.

In the embodiment shown in FIG. 7, the grounding member includes a ground plate, a second insulating layer, a shielding plate, and a third insulating layer. The grounding plate, the second insulating layer, the shielding plate and the third insulating layer can all shield the interference signal. By placing the grounding member under the antenna in the antenna assembly, the interference from the outside to the antenna can be reduced, thereby improving the signal-to-noise ratio of the antenna. In the actual application process, the third insulating layer may be an insulating foam, an insulating plastic or the like. Preferably, the third insulating layer may be an insulating double-sided tape. One side of the fourth insulating layer is attached to the second side of the grounding plate, and the other side of the third insulating layer is attached to the upper surface of the shielding plate. On the basis of this embodiment, further, a second through hole may be disposed on the second insulating layer to make the ground plate have a grounding port.

FIG. 8 is a schematic structural view VII of a grounding member provided by the present invention. On the basis of the embodiment shown in FIG. 7, referring to FIG. 8, the first side of the grounding plate 1031 is provided with a first insulating layer 1032, and the second side of the grounding plate is sequentially provided with a third insulating layer 1036, a shielding plate 1034, And a second insulating layer 1033.

In the embodiment shown in FIG. 8, the grounding member includes a ground plate, a first insulating layer, a second insulating layer, a shielding plate, and a third insulating layer. The grounding plate, the first insulating layer, the second insulating layer, the shielding plate and the third insulating layer can all shield the interference signal. By placing the grounding member under the antenna in the antenna assembly, the interference from the outside to the antenna can be reduced, thereby improving the signal-to-noise ratio of the antenna. It should be noted that the third insulating layer in the embodiment shown in FIG. 8 is the same as the third insulating layer in the embodiment shown in FIG. 7, and details are not described herein. On the basis of this embodiment, further, a second through hole may be disposed on the second insulating layer to make the ground plate have a grounding port.

On the basis of any of the embodiments of FIGS. 5-8, since the grounding plate and the shielding plate are both electrically conductive, in order to eliminate the potential difference between the grounding plate and the shielding plate, the grounding plate and the shielding plate can be electrically connected through the wires. It should be noted that, in the embodiment shown in FIGS. 5-8, a shielding plate is disposed on the second side of the grounding plate. Of course, it is also possible to set more layers on the second side of the ground plate (greater than or equal to 2 Shield). When a plurality of layers (greater than or equal to 2 layers) of the shielding plate are disposed on the second side of the grounding plate, an insulating layer is disposed between the shielding plates, and each shielding plate and the grounding plate are electrically connected by wires. In the actual application process, the number of layers of the shielding plate can be set according to actual needs, which is not specifically limited in the present invention.

On the basis of any of the embodiments of FIG. 1 to FIG. 8 , in order to facilitate the installation of the antenna, the antenna may be disposed on the back of the antenna circuit board. For details, refer to the embodiment shown in FIG. 9 .

FIG. 9A is a schematic front structural view of an antenna circuit board according to the present invention. Referring to FIG. 9A, a metal shield 1021 is provided on the front surface of the antenna circuit board 102.

FIG. 9B is a schematic diagram showing the structure of the back surface of the antenna circuit board according to the present invention. Referring to FIG. 9B, an antenna 101 is disposed on the back surface of the antenna circuit board 102. By placing the antenna on the back of the antenna circuit board, it is more advantageous to mount the antenna. In an actual application process, optionally, the antenna may be a GPS antenna.

Based on any of the embodiments of FIG. 1 to FIG. 9, the antenna circuit board may include a plurality of independent circuits including receiving circuits for receiving satellite signals, the receiving circuits being located in the metal shield, such that The interference of the external signal on the received signal of the receiving circuit can be reduced, and the signal-to-noise ratio of the satellite receiving the satellite signal is improved. Further, in order to reduce the interference of other circuits in the plurality of circuits on the received signals of the receiving circuit, only the receiving circuit may be disposed in the metal shield.

The grounding plate may be made of at least one of gold, silver, copper, aluminum, iron, and stainless steel, based on any of the embodiments of FIG. The shielding plate may be made of at least one of gold, silver, copper, aluminum, iron, and stainless steel. Of course, in the actual application process, the material of the grounding plate and the shielding plate may be other materials having electrical conductivity, which is not specifically limited in the present invention.

On the basis of any of the embodiments of FIG. 1 to FIG. 9 , the grounding plate can be electrically connected to the metal shielding cover by means of glue, welding or screwing. Of course, in actual application, the grounding plate can also be connected by other means. The electrical connection with the metal shield is not specifically limited in the present invention.

Embodiments of the present invention also provide a grounding component that is applied to an antenna component. A grounded metal shield is included in the antenna assembly. Wherein, the grounding component comprises a grounding plate, the grounding plate has an electrical conductivity, and the grounding plate is used for electrically connecting with the metal shielding cover.

The grounding member provided by the embodiment of the invention includes a grounding plate having electrical conductivity, and the grounding plate and the metal shielding cover are electrically connected. Since the metal shield is grounded, the ground plane is also grounded. Technology in the field The operator can understand that the antenna component includes an antenna. By grounding the grounding plate, the grounding component can be used as the grounding surface of the antenna in the antenna component, thereby increasing the area of the grounding surface of the antenna in the antenna component, thereby increasing the antenna component. The gain of the antenna.

It should be noted that the grounding member in this embodiment may be any one of the grounding members in the embodiments shown in FIG. 1-8. The structural components and the beneficial effects of the grounding member in the embodiment of the present invention are the same as the structural components and the beneficial effects of the grounding member shown in the embodiment shown in FIG. 1 to FIG. 8, and are not described herein again.

10 is a schematic structural diagram 1 of a drone provided by the present invention. Referring to FIG. 10, the drone may include the antenna assembly 10, and the antenna assembly 10 includes an antenna 101, a circuit board 102 matched with the antenna, Grounding member 103. The antenna circuit board 102 is connected to the antenna 101. A metal shield 1021 is disposed on the antenna circuit board 102. The metal shield 1021 is connected to a ground line in the antenna circuit board 102. The grounding member 103 includes a grounding plate 1031 having an electrically conductive property, and the grounding plate 1031 is electrically connected to the metal shield 1021.

In order to facilitate the understanding of the drone, the structure of the drone will be described in detail below through the physical structure diagram of the drone. Specifically, please refer to the embodiment shown in FIG.

11 is a schematic structural view of a drone provided by the present invention. Referring to FIG. 11, the drone includes a battery 1101, an upper casing 1102, a metal cavity 1103, a lower casing 1104, and a stand 1105. Wherein, the upper case 1102 and the lower case 1104 are disposed opposite to each other, and the metal cavity 1103 is disposed between the upper case 1102 and the lower case 1104, the stand 1105 is disposed on the lower side of the lower case 1104, and the battery 1101 is disposed on the metal Inside the cavity 1103. Specifically, the upper housing 1102 is provided with a propeller 11021 and a motor 11022. The motor 11022 drives the propeller 11021 to rotate and provides power to the drone. On the tripod 1105, a device such as a pan/tilt can be disposed. It should be noted that FIG. 11 is a schematic diagram showing a physical structure diagram of a drone, and is not a limitation on the structure of the drone. The present invention does not specifically limit the structure of the drone.

It should be noted that the antenna assembly included in the UAV in this embodiment has the same structure, function, and beneficial effects as the antenna assembly described in the embodiment of FIG. 1, and details are not described herein.

Based on the embodiment shown in FIG. 10, in order to improve the signal-to-noise ratio of the antenna in the antenna assembly, the grounding member may include one or two insulating layers, or the grounding member may further include a shielding plate. Specifically, the structure of the grounding member is respectively the same as that of the grounding member in the embodiment shown in FIGS. 3A-8. The functions and the beneficial effects of the corresponding antenna components are the same as those of the antenna components in the embodiments shown in FIGS. 3A-8, and are not described herein again.

Based on any of the above embodiments, the drone includes a metal cavity for housing the battery 1101, and the battery 1101 is for supplying power to the drone. Further, the drone includes a plurality of circuit boards, and the circuit boards in the drone are disposed on the metal cavity, and each circuit board is electrically connected to the metal cavity. Specifically, please refer to Figure 12.

FIG. 12 is a schematic structural view 1 of a metal cavity provided by the present invention. Here, for convenience of description, the antenna assembly in the drone is not shown in FIG. Referring to FIG. 12, the drone includes at least one circuit board 1106. Each circuit board 1106 is electrically connected to the metal cavity 1103. Alternatively, the at least one circuit board 1106 may be provided with at least one sensor and/or processor. The sensor includes at least one of an inertial measurement unit (IMU) sensor, an electronic governor, a barometer, and a multi-head sensor. The processor may include a main controller, etc., since each circuit board 1106 is The metal cavities 1103 are electrically connected, and the grounding members 103 in the antenna assembly are also electrically connected to the metal cavities 1103 such that the sensors on the respective circuit boards 1106 and the processor and the antenna components have the same zero potential reference, reducing The common mode radiation caused by the potential difference between each sensor and the processor-level antenna component avoids the interference of the common mode radiation to the antenna in the antenna assembly, and further improves the anti-interference performance of the antenna in the antenna assembly.

Based on any of the above embodiments, since the antenna circuit board 102 in the antenna assembly includes a ground line, the metal shield 1021 is connected to the ground line in the antenna circuit board 102, so that the potential on the metal shield 1021 is zero. The grounding plate 1031 of the grounding member 103 is electrically connected to the metal shield 1021, the grounding plate 1031 is directly electrically connected to the metal cavity 1103, or the grounding plate 1301 is electrically connected to the metal cavity 1103 through the shielding plate 1034, and each of the circuit boards 1106 is The metal cavities 1103 are electrically connected such that the sensors on the respective circuit boards 1106 and the processor and the antenna assembly have the same zero potential reference, thereby ensuring that all circuits inside the metal cavity 1103 are provided inside the drone The boards have the same zero potential reference, reducing common mode radiation problems, thereby reducing the interference of common mode radiation to antenna components, such as GPS modules. In a practical application, the potential of the metal cavity 1103 of the drone can be made zero by another feasible implementation. Specifically, the metal cavity 1103 is connected to the negative electrode of the battery 1101 in the drone. Since the potential of the negative electrode of the battery 1101 in the drone is zero, when the metal cavity 1103 is connected to the negative electrode of the battery 1101, the potential of the metal cavity 1103 can also be made zero. It should be noted that in the actual application process, the above two feasible This is achieved such that the potential of the metal cavity 1103 is zero and all of the boards disposed inside the metal cavity 1103 of the drone have the same zero potential reference.

On the basis of any of the above embodiments, in order to eliminate the potential difference between the antenna assembly and the drone when the antenna assembly is mounted on the drone, the grounding component in the antenna assembly can be electrically connected to the metal cavity of the drone. . The connection relationship between the grounded component and the drone is different depending on the structure of the grounded component in the antenna assembly. In the following, the connection relationship between the grounding component and the UAV shown in any of the embodiments of FIG. 1 to FIG. 8 is described in detail by using a specific embodiment. Specifically, the following four possible implementation manners are included:

The first feasible implementation manner: when the grounding component is the grounding component shown in the embodiment of FIG. 1 or FIG. 3A, the second side of the grounding plate is not provided with an insulating layer or a shielding plate, and the grounding plate can directly be connected with the metal of the drone The cavity is electrically connected.

The second feasible implementation manner is as follows: when the grounding component is the grounding component shown in the embodiment of FIG. 3B or FIG. 4, the second side of the grounding plate is provided with a second insulating layer having a second through hole, and the grounding plate can pass the first The two through holes are electrically connected to the metal cavity of the drone.

The third feasible implementation manner is as follows: when the grounding component is the grounding component shown in the embodiment of FIG. 5 or FIG. 6, the second side of the grounding plate is provided with a shielding plate, and the shielding plate can be directly connected to the metal cavity of the drone. The connection is made, at the same time, the shielding plate and the grounding plate are electrically connected by wires, so that the grounding plate can also be electrically connected to the metal cavity of the drone.

The fourth feasible implementation manner is as follows: when the grounding component is the grounding component shown in the embodiment of FIG. 7 or FIG. 8, the second side of the grounding plate is provided with a second insulating layer having a second through hole, the grounding plate and the second insulating layer A shielding plate is disposed between the layers, and the shielding plate can be electrically connected to the metal cavity of the drone through the second through hole, and at the same time, the shielding plate and the grounding plate are electrically connected by the wire, so that the grounding plate can also be connected with the drone. The metal cavity is electrically connected.

In the above four feasible implementation manners, by connecting the grounding plate or the shielding plate in the grounding member to the metal cavity of the drone, the grounding plate and the shielding plate have the same zero potential reference, which reduces the The common mode radiation caused by the potential difference between the ground plate and the shielding plate avoids the interference of the common mode radiation on the antenna in the antenna assembly, and further improves the anti-interference performance of the antenna in the antenna assembly.

It should be noted that, in the second and fourth possible implementation manners described above, the grounding plate or the shielding plate needs to be electrically connected to the metal cavity of the drone through the second through hole on the second insulating layer. In reality In the application process, in order to ensure the reliability of the electrical connection between the grounding plate or the shielding plate and the metal cavity, at least one conductive component may be disposed on the metal cavity of the aircraft, and the grounding component is electrically connected to the metal cavity through the conductive component. Specifically, please refer to Figure 13.

FIG. 13 is a schematic structural view 2 of a metal cavity provided by the present invention. Here, for convenience of description, the antenna assembly in the drone is not shown in FIG. Referring to FIG. 13, a conductive member 11031 is disposed on the metal cavity 1103, and a grounding member in the antenna assembly is electrically connected to the metal cavity through the conductive member 11031 (not shown in FIG. 13). According to different grounding components, the grounding component is connected to the metal cavity through the conductive component 11031. Specifically, when the shielding component is not included in the grounding component, the grounding plate in the grounding component is electrically connected to the metal cavity through the conductive component 11031. Connecting, when the shielding member is included in the grounding member, the shielding plate in the grounding member is electrically connected to the metal cavity through the conductive member 11031. Alternatively, the conductive member 11031 may be a conductive foam. Of course, in the actual application process, the number, material, and shape of the conductive members 11031 can be set according to actual needs, which is not specifically limited in the present invention.

On the basis of the embodiment of FIG. 13, in order to enable the grounding plate or the shielding plate to be reliably electrically connected to the metal cavity through the second through hole on the second insulating layer, the second through hole on the second insulating layer may be Each conductive member 11031 corresponds to, specifically, see FIG.

FIG. 14 is a schematic structural view of a second insulating layer provided by the present invention. Referring to FIG. 14, the second insulating layer 1033 is provided with three second through holes 10331. The shapes, sizes, and positional distributions of the three second through holes 10331 correspond to the three conductive members 11031 in FIG. 13, respectively. It should be noted that, in actual application, the number of the second through holes 10331 on the second insulating layer 1033 may be set according to the number, size, shape, and position distribution of the conductive members 11031 on the metal cavity 1103. The size, shape, and position distribution are not specifically limited in the present invention.

On the basis of any of the above embodiments, the antenna assembly is located between the upper housing 1102 and the metal cavity 1103, and the antenna circuit board 102 is connected to the upper housing 1102. On the basis of this embodiment, in order to ensure the antenna 101 in the antenna assembly The area of the ground plane is the largest, the shape of the ground plate 1031 is the same as the shape of the upper casing 1102, and the area of the ground plate 1031 is the same as the area of the upper casing 1102, so that the area of the ground plane of the antenna 101 in the antenna assembly is maximized. Further, the gain of the antenna 101 is maximized.

In the actual application process, in order to facilitate the mounting of the antenna assembly on the upper casing 1102, the shape and size of the grounding plate 1031 may be set according to the shape and size of the upper casing 1102. Below, The process of setting the shape and size of the grounding plate according to the upper casing will be described in detail by way of the embodiment shown in FIG.

Figure 15 is a schematic view showing the relationship between the upper casing and the grounding plate of the unmanned aerial vehicle provided by the present invention. Referring to Fig. 15, the shape of the upper casing 1102 is as shown in Fig. 15, and the shape shown by 1102 is cut by a broken line to obtain the shape shown by the ground plate 1031.

In an actual application process, on the basis of any of the above embodiments, in order to facilitate the installation of the antenna, the antenna may be disposed on the back of the antenna circuit board. Further optionally, the antenna may be a GPS antenna.

Based on any of the above embodiments, the antenna circuit board may include a plurality of independent circuits including receiving circuits for receiving satellite signals, the receiving circuits being located in the metal shield, thereby reducing external signals. The interference of the receiving signal of the receiving circuit improves the signal-to-noise ratio of the antenna signal received by the antenna; further, in order to reduce the interference of other circuits in the plurality of circuits to the receiving signal of the receiving circuit, only the receiving circuit may be disposed in the metal shield .

On the basis of any of the above embodiments, the material of the grounding plate may be at least one of gold, silver, copper, aluminum, iron, and stainless steel. The material of the shielding plate may be gold, silver, copper, aluminum, iron, or stainless steel. At least one of the materials, of course, in the actual application process, the material of the grounding plate and the shielding plate may be other materials having electrical conductivity, which is not specifically limited in the present invention.

On the basis of any of the above embodiments, the grounding plate can be electrically connected to the metal shield by means of glue, soldering or screwing. Of course, in practical applications, the grounding plate can be connected to the metal shield by other means. The electrical connection is made, which is not specifically limited in the present invention.

In the following, the connection relationship between the antenna component and the drone is illustrated by a specific example. For details, please refer to FIG. 16.

FIG. 16 is a schematic diagram of an assembly structure of an antenna assembly and a drone provided by the present invention. Referring to FIG. 16, an upper casing 1102 and a metal cavity 1103 in the drone, and an antenna 101, an antenna circuit board 102, and a grounding member 103 in the antenna assembly are included. among them,

The upper surface of the antenna 101 is connected to the lower surface of the upper casing 1102. Optionally, the lower surface of the antenna 101 may be connected to the lower surface of the upper casing 1102 by various methods such as gluing, welding, screwing, and the like.

The lower surface of the antenna 101 is disposed on the back surface of the antenna circuit board 102, and the front surface of the antenna circuit board 102 is provided with a metal shield (not shown in Fig. 16).

Assuming that the grounding member 103 is the grounding member shown in FIG. 8, the uppermost layer of the grounding member is a first insulating layer, and the first insulating layer is provided with a first through hole 10321, the size of the first through hole 10321 and the metal shield. And the shape is uniform, and the first through hole 10321 is disposed opposite to the metal shield so that the grounding plate (not shown in FIG. 16) in the grounding member is electrically connected to the metal shield, and at the same time, the upper surface of the grounding member 103 (first The area of the insulating layer except the first via hole 10321 can be connected to the lower surface of the antenna circuit board 102 (except the area occupied by the metal shield) by various methods such as gluing, soldering, screwing, and the like.

The lowermost layer of the grounding member 103 is a second insulating layer (not shown in FIG. 16), and the second insulating layer is provided with three second through holes (not shown in FIG. 16), and the shapes of the three second through holes The size is the same as the shape and size of the three conductive members 11031 on the metal cavity 1103. The three second through holes are respectively disposed opposite to the three conductive members 11031 on the metal cavity 1103 to make the grounding member. The shielding plate of the 103 is connected to the conductive member 11031. At the same time, the lower surface of the grounding member 103 (the area occupied by the three second through holes in the second insulating layer) can be glued, welded, screwed, etc. in various feasible ways. It is connected to the upper surface of the metal cavity 1103 of the drone (except for the area occupied by the three conductive foams).

It should be noted that, in the embodiment of FIG. 16, the connection relationship between the antenna component, the drone, and the antenna component and the unmanned person is described by way of example only, not to the antenna component, the drone, and the antenna component. The limitation of the connection relationship with the unmanned person.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

An antenna assembly, comprising: an antenna, an antenna circuit board matched with the antenna, and a grounding component, wherein

The antenna circuit board is connected to the antenna, and the antenna circuit board is provided with a metal shield, and the metal shield is connected to a ground line in the antenna circuit board;

The grounding member includes a ground plate having electrical conductivity, and the ground plate is electrically connected to the metal shield.
The antenna assembly according to claim 1, wherein said grounding member further comprises a first insulating layer, said first insulating layer being disposed on a first side of said ground plate, said first insulating layer having a first through hole, wherein the ground plate is electrically connected to the metal shield through the first through hole.
The antenna assembly according to claim 2, wherein an area of the first through hole is greater than or equal to an area of a lower surface of the metal shield, and the first through hole is opposite to the metal shield Settings.
The antenna assembly according to any one of claims 1 to 3, wherein the grounding member further comprises a second insulating layer, the second insulating layer being disposed on a second side of the ground plate.
The antenna assembly according to claim 4, wherein the second insulating layer is provided with a second through hole such that the ground plate has a grounding port.
The antenna assembly according to claim 4 or 5, wherein the grounding member further comprises a third insulating layer and a shielding plate, the shielding plate being disposed between the grounding plate and the second insulating layer, The third insulating layer is disposed between the ground plate and the shielding plate, and the shielding plate has electrical conductivity.
The antenna assembly according to any one of claims 1 to 3, wherein the grounding member further comprises a fourth insulating layer and a shielding plate, the shielding plate being disposed on a second side of the grounding plate, A fourth insulating layer is disposed between the ground plate and the shielding plate, and the shielding plate has electrical conductivity.
The antenna assembly according to claim 6 or 7, wherein said ground plate and said shield plate are electrically connected by wires.
The antenna assembly according to any one of claims 1 to 8, wherein the antenna is disposed on a rear surface of the antenna circuit board.
The antenna assembly according to any one of claims 1 to 9, wherein the antenna For the GPS antenna.
The antenna assembly of claim 10 wherein said antenna circuit board includes a receiving circuit for receiving satellite signals, said receiving circuit being located within said metal shield.
The antenna assembly according to any one of claims 1 to 11, wherein the grounding plate is made of at least one of gold, silver, copper, aluminum, iron, and stainless steel.
The antenna assembly according to any one of claims 5, 6, or 7, wherein the shielding plate is made of at least one of gold, silver, copper, aluminum, iron, and stainless steel.
The antenna assembly according to any one of claims 1 to 13, wherein the ground plate is electrically connected to the metal shield by glue, soldering or screwing.
A grounding member, which is characterized in that it is applied to an antenna assembly, wherein the antenna assembly includes a grounded metal shield, wherein

The grounding member includes a grounding plate having electrical conductivity, and the grounding plate is for electrically connecting to the metal shield.
The grounding member according to claim 15, wherein the grounding member further comprises a first insulating layer, the first insulating layer is disposed on a first side of the ground plate, and the first insulating layer has a first through hole, wherein the ground plate is electrically connected to the metal shield through the first through hole.
The grounding member according to claim 16, wherein an area of the first through hole is greater than or equal to an area of a lower surface of the metal shield, and the first through hole is opposite to the metal shield Settings.
The grounding member according to any one of claims 15-17, wherein the grounding member further comprises a second insulating layer, the second insulating layer being disposed on a second side of the ground plate.
The grounding member according to claim 18, wherein the second insulating layer is provided with a second through hole such that the ground plate has a grounding port.
The grounding member according to claim 18 or 19, wherein the grounding member further comprises a third insulating layer and a shielding plate, the shielding plate being disposed between the grounding plate and the second insulating layer, The third insulating layer is disposed between the ground plate and the shielding plate, and the shielding plate has electrical conductivity.
A grounding member according to any one of claims 15-17, wherein said The ground component further includes a fourth insulating layer disposed on a second side of the ground plate, and a fourth insulating layer disposed between the ground plate and the shielding plate, the shielding The board has electrical conductivity.
A grounding member according to claim 20 or 21, wherein said ground plate and said shield plate are electrically connected by wires.
An unmanned aerial vehicle, comprising: an antenna assembly, the antenna assembly comprising an antenna, a circuit board matched with the antenna, and a grounding component, wherein

The antenna circuit board is connected to the antenna, and the antenna circuit board is provided with a metal shield, and the metal shield is connected to a ground line in the antenna circuit board;

The grounding member includes a ground plate having electrical conductivity, and the ground plate is electrically connected to the metal shield.
The drone according to claim 23, wherein said grounding member further comprises a first insulating layer, said first insulating layer being disposed on said first side of said grounding plate, said first insulating layer A first through hole is formed, and the ground plate is electrically connected to the metal shield through the first through hole.
The drone according to claim 24, wherein an area of the first through hole is greater than or equal to an area of a lower surface of the metal shield, the first through hole and the metal shield are positive For the settings.
The drone according to any one of claims 23-25, wherein the ground plate is electrically connected to a metal cavity of the drone.
The drone according to any one of claims 24 to 26, wherein the grounding member further comprises a second insulating layer, and the second insulating layer is disposed on the second side of the ground plate.
The UAV according to claim 27, wherein the second insulating layer is provided with a second through hole, and the grounding plate passes through the second through hole and the metal cavity of the drone Electrical connection.
The drone according to claim 27, wherein said grounding member further comprises a third insulating layer and a shield plate, said shield plate being disposed between said ground plate and said second insulating layer The third insulating layer is disposed between the ground plate and the shielding plate, and the shielding plate has electrical conductivity.
The drone according to claim 29, wherein said second insulating layer is provided A second through hole is disposed, and the shielding plate is electrically connected to the metal cavity of the drone through the second through hole.
The drone according to any one of claims 23-25, wherein the grounding member further comprises a fourth insulating layer and a shielding plate, the shielding plate being disposed on the second side of the grounding plate, The fourth insulating layer is disposed between the ground plate and the shielding plate, and the shielding plate has electrical conductivity.
The drone according to claim 31, wherein said shield plate is electrically connected to a metal cavity of said drone.
The drone according to any one of claims 30 to 32, wherein the ground plate and the shield plate are electrically connected by wires.
The drone according to any one of claims 23 to 33, wherein the antenna is disposed on a rear surface of the antenna circuit board.
The drone according to any one of claims 23 to 34, wherein the antenna is a GPS antenna.
A drone according to any one of claims 23 to 35, wherein said antenna circuit board includes a receiving circuit for receiving a satellite signal, said receiving circuit being located within said metal shield.
The drone according to any one of claims 23 to 36, wherein the drone further comprises an upper casing for fixing the antenna assembly, the shape of the grounding plate and the upper casing The shape of the body is the same, and the area of the ground plate is the same as the area of the upper casing.
A drone according to any one of claims 23 to 37, wherein the drone includes a metal cavity for housing a battery for supplying power to the drone.
The drone according to claim 38, wherein said metal cavity is provided with at least one circuit board, and each of said circuit boards is electrically connected to said metal cavity.
The drone according to claim 39, wherein each of said circuit boards is provided with at least one sensor and/or processor.
The drone according to claim 40, wherein said sensor comprises an IMU sensor, an electronic governor, a barometer, and a multi-head sensor.
The drone according to claim 40, wherein the metal cavity of the drone is connected to the negative electrode of the battery in the drone.
The drone according to any one of claims 23 to 42, wherein the unmanned person The machine further includes a lower casing disposed opposite the upper casing, and a tripod disposed between the upper casing and the lower casing, the tripod being disposed under the Below the housing.
The drone according to any one of claims 37 to 43 wherein said antenna assembly is located between said upper casing and said metal cavity, said antenna circuit board in said antenna assembly and said The upper housing is connected.
The drone according to claim 44, wherein said metal cavity is provided with a conductive member, and said ground member is electrically connected to said metal cavity through said conductive member.
The drone according to claim 45, wherein said conductive member is a conductive foam.
The drone according to claim 44, wherein the back surface of the antenna circuit board is connected to the upper casing by means of glue, welding or screwing.
The drone according to any one of claims 23 to 47, wherein the grounding plate is made of at least one of gold, silver, copper, aluminum, iron, and stainless steel.
The drone according to any one of claims 29 to 33, wherein the shielding plate is made of at least one of gold, silver, copper, aluminum, iron, and stainless steel.
The drone according to any one of claims 23 to 49, characterized in that the grounding plate is connected to the metal shield by means of glue, welding or screwing.
A drone according to any one of claims 23 to 50, wherein the drone is an unmanned aerial vehicle.