WO2018191982A1

WO2018191982A1 - Antenna, ground control system of unmanned aerial vehicle, and unmanned aerial vehicle system

Info

Publication number: WO2018191982A1
Application number: PCT/CN2017/081526
Authority: WO
Inventors: 汤一君; 吕超; 胡孟
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2017-04-21
Filing date: 2017-04-21
Publication date: 2018-10-25
Also published as: CN108475844A; CN112164876A; CN108475844B

Abstract

Provided are an antenna, a ground control system of an unmanned aerial vehicle, and an unmanned aerial vehicle system. The antenna (100) comprises a substrate (1), a plurality of dipoles (2) printed on the substrate, a feed network (3) and an earth plate (4), wherein each of the dipoles (2) comprises an element unit (20) arranged at one side of the substrate (1), and an element unit (20) arranged at the other side of the substrate (1), and each element unit (20) comprises a first element (21) and a second element (22); the feed network (3) is connected to each element unit (20); and the substrate (1) and the earth plate (4) are arranged in parallel at an interval of pre-set distance. The antenna in the embodiments of the present invention has good matching performance and radiation performance, the gain of the antenna is increased, and the data transmission distance is long.

Description

Antenna, ground control system for drones, and drone system

Technical field

The invention relates to the field of data transmission, in particular to an antenna, a ground control system of a drone and a drone system.

Background technique

In the field of drones, omnidirectional antennas are generally used to transmit data (such as control commands, images, etc.) between the drone and the ground control system. Among them, the omnidirectional antenna is generally a dipole form or a circularly polarized omnidirectional antenna similar to the dipole, which is limited by the gain characteristics of such an antenna, and the data transmission distance is short. Therefore, when the distance between the UAV and the ground control system is far away or the UAV and the ground control system have obstacles, the data transmitted by the omnidirectional antenna of the ground control system cannot reach the UAV smoothly, resulting in ground control. The system is out of contact with the drone.

Summary of the invention

The invention provides an antenna, a ground control system of a drone and a drone system to optimize the performance of the antenna, increase the communication distance between the drone and the ground control system, and improve the communication quality.

According to a first aspect of the present invention, there is provided an antenna comprising a substrate, a plurality of dipoles printed on the substrate, a feed network, and a ground plate, the dipole including a side disposed on the substrate a vibrator unit and a vibrator unit disposed on the other side of the substrate, wherein the vibrator unit includes a first vibrator and a second vibrator; the feed network is connected to each vibrator unit; and the substrate is spaced apart from the ground plate by a preset The distance is set in parallel.

According to a second aspect of the present invention, there is provided a ground control system for a drone, comprising: a control terminal and the antenna according to the first aspect above, wherein the control terminal and the antenna Connected by a feeder; the control terminal is configured to generate a control command for the drone; and the antenna is configured to send the control command to the drone.

According to a third aspect of the present invention, there is provided a drone system comprising: a drone and the antenna according to the first aspect, wherein the drone is connected to the antenna via a feeder; Receiving a drone control command sent by the control terminal; the drone is configured to execute the control command.

It can be seen from the technical solutions provided by the embodiments of the present invention that the grounding plate is disposed in parallel on a side of the substrate by a predetermined distance, so that the signal radiated by the antenna has directivity, and the vibrator unit is separately printed on both sides of the substrate. By setting the first vibrator and the second vibrator, the transmission of the dual-band data can be realized, the radiation surface is increased, the gain of the antenna is improved, and the gain of the antenna is stable in the band, and the data transmission distance is long. By using the antenna in the embodiment of the invention, the communication distance between the drone and the ground control system is increased, and the communication quality is improved.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

1 is a perspective view of an antenna on a side of a substrate in an embodiment of the present invention;

2 is a perspective view of the antenna on the other side of the substrate in the embodiment of the present invention;

Figure 3 is a cross-sectional view of the antenna in the embodiment of the present invention;

Figure 4 is a perspective view of an antenna in an embodiment of the present invention;

FIG. 5 is a schematic diagram of port matching characteristics of an antenna in a frequency band according to an embodiment of the present invention; FIG.

6 is a schematic diagram of port matching characteristics of an antenna in another frequency band according to an embodiment of the present invention;

7 is a schematic diagram showing the magnitude of gain fluctuation of an antenna in a frequency band in an embodiment of the present invention;

FIG. 8 is a schematic diagram showing the magnitude of gain fluctuation of an antenna in another frequency band according to an embodiment of the present invention; FIG.

9 is a schematic diagram of a radiation direction of an antenna in a frequency band in an embodiment of the present invention;

10 is a schematic diagram of a radiation direction of an antenna in another frequency band in an embodiment of the present invention;

11 is a schematic diagram of main cross polarization of an antenna in a frequency band in an embodiment of the present invention;

12 is a schematic diagram of main cross polarization of an antenna in another frequency band according to an embodiment of the present invention;

13 is a schematic diagram of a gain curve of an antenna in a frequency band in an embodiment of the present invention;

14 is a schematic diagram of a gain curve of an antenna in another frequency band in an embodiment of the present invention;

15 is a schematic structural view of a ground control system of a drone according to an embodiment of the present invention;

Figure 16 is a block diagram showing the structure of an unmanned aerial vehicle system in accordance with an embodiment of the present invention.

Reference mark:

100: antenna;

200: ground control system of the drone; 201: control terminal;

300: drone system; 301: drone;

1: substrate;

2: dipole; 20: vibrator unit; 21: first vibrator; 211: first main body portion; 212: first bent portion; 22: second vibrator; 221: second main body portion; Folding part

3: feed network; 31: feed point; 32: first feeder portion; 33: second feeder portion; 34: third feeder portion; 35: fourth feeder portion; 36: connection portion;

4: grounding plate;

5: Fixed part.

detailed description

The technical solution in the embodiment of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. The present invention is described in a clear and complete manner, and it is obvious that the described embodiments are only a part of the embodiments 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.

The antenna 100 of the present invention, the ground control system of the drone, and the unmanned aerial vehicle system will be described in detail below with reference to the accompanying drawings. The features of the embodiments and embodiments described below may be combined with each other without conflict.

1 to 4, an embodiment of the present invention provides an antenna 100, wherein the antenna is a directional antenna, and the antenna 100 includes a substrate 1, a dipole 2, a feed network 3, and a grounding plate 4. Wherein the dipole 2 includes a vibrator unit 20 disposed on one side of the substrate 1 and a vibrator unit 20 disposed on the other side of the substrate 1, the vibrator unit 20 including a first vibrator 21 and a second vibrator twenty two. The dipole 2 and the feed network 3 are printed on the substrate 1 to effect the fixation of the dipole 2 and the feed network 3. The feed network 3 is connected to each of the transducer units 20 such that communication of each transducer unit with an external device is effected by the feed network 3. The substrate 1 is disposed in parallel with the ground plate at a predetermined distance H.

In the embodiment of the present invention, the ground plate 4 disposed in parallel with the preset distance H on one side of the substrate 1 makes the signal radiated by the antenna 100 have directivity, the gain of the antenna 100 is large, and the data transmission distance is long, wherein the substrate 1 is an air layer between the grounding plate 4, thereby ensuring good radiation characteristics of the antenna 100. The lengths of the first vibrator 21 and the second vibrator 22 can be set as needed to achieve dual-band data transmission. The vibrator unit 20 is printed on both sides of the substrate 1 to increase the radiation surface. The antenna 100 of the present invention has good matching performance and radiation performance, and the antenna 100 is stabilized in-band gain. 1 and 2, in this embodiment, a part of the feeding network 3 is disposed on one side of the substrate 1, and another portion is disposed on the other side of the substrate 1, wherein the substrate 1 is on the same side. The feed network 3 is connected to each of the transducer units 20 on the same side.

The number of vibrator units 20 on both sides of the substrate 1 can be set as needed. Optionally, the vibrator units 20 on both sides of the substrate 1 are even. In this embodiment, an even number of vibrations are provided on each side of the substrate. The subunits 20 are all distributed axially and axially. In some embodiments, the number of the vibrator units 20 on both sides of the substrate 1 is eight, and the number of dipoles in the embodiment of the present invention is eight.

Herein, for convenience of description, the side of the substrate 1 away from the ground plate 4 is referred to as the upper surface of the substrate 1, and the side of the substrate 1 close to the ground plate 4 is referred to as the lower surface of the substrate 1, and the substrate 1 will be hereinafter referred to as The structure of the upper surface is explained.

1 and 2, in the embodiment, the vibrator unit 20 includes a first vibrator 21 and two second vibrators 22. The length of the first vibrator 21 is greater than the length of the second vibrator 22, so that the antenna 100 realizes dual-frequency transmission, and the signal frequency band radiated by the first vibrator 21 is lower than the signal frequency band radiated by the second vibrator. Optionally, the frequency range of the signal transmitted by the first vibrator 21 is floating at 2.4 GHz (for example, 2.4 GHz to 2.5 GHz), and the frequency range of the second vibrator 22 transmitting signal is in a full frequency band of 5 G (for example, 5.1 GHz). Up to 5.85 GHz), the 5G full frequency band includes 5.8 GHz.

In some embodiments, the two second vibrators 22 are symmetrically disposed on both sides of the first vibrator 21 such that the radiation patterns of the first vibrator 21 and the second vibrator 22 are more symmetrical, and the main polarization of the antenna is cross-isolated. The degree is high and the signal transmission is relatively uniform. 1 and 2, the first vibrator 21 includes a first body portion 211 and a first bent portion 212, and the two second vibrators 22 are symmetrically disposed on both sides of the first body portion 211. By providing the first body portion 211 and the first bent portion 212, the structure of the first vibrator 21 is relatively compact, and the overall size of the antenna 100 is reduced. Optionally, the first bending portion 212 is disposed at one end of the first body portion 211, and the two second vibrators 22 are symmetrically disposed at the other end of the first body portion 211. The first bent portion 212 is connected to one end of the first body portion 211, and the two second vibrators 22 are respectively connected to the other end of the first body portion 211.

In some embodiments, one end of the first body portion 211 is vertically connected to the middle of the first bent portion 212, further making the structure of the first vibrator 21 relatively compact, thereby reducing the overall size of the antenna 100. Moreover, the structure of the first vibrator 21 is a symmetrical structure, which also makes the radiation pattern of the first vibrator 21 itself more symmetrical, and the signal transmission is more uniform. In this embodiment, the The first vibrator 21 can look at a "T" type structure.

1 and 2, the second vibrator 22 includes a second body portion 221 and a second bent portion 222, wherein the second body portions 221 of the two second vibrators 22 are symmetrically connected to the first body portion An end of the 211 is away from the first bent portion, and the first body portion 211 is perpendicular to the second body portion 221 .

The second bending portion 222 is vertically disposed at an end of the second body portion 221 away from the first body portion 211, wherein the second bending portion 222 extends toward the first bending portion 212, and the second vibrator 22 is similar to "L" type structure. It should be noted that, in order to realize the dual frequency characteristic and facilitate adjustment of the performance parameters of the first vibrator 21 and the second vibrator 22, the first bent portion 212 and the second bent portion 222 do not intersect.

In this embodiment, referring to FIG. 4, the vibrator unit 20 disposed on the lower surface of the substrate 1 is mirror-distributed with the vibrator unit disposed on the upper surface of the substrate, thereby increasing the radiation surface, so that the antenna 100 has better radiation performance, matching, and Stable gain. Among them, one vibrator unit 20 on the upper surface of the substrate 1 having a mirror image distribution forms a dipole 2 with one vibrator unit on the lower surface of the substrate 1. For example, the upper surface of the substrate 1 is provided with eight transducer units 20, the lower surface of the substrate 1 is provided with eight transducer units 20, and the antenna includes eight dipoles 2. In this embodiment, each dipole 2 has a shape similar to a butterfly shape.

1 and 2, the feed network includes a feed point 31, a first feeder portion 32, a second feeder portion 33, a third feeder portion 34, and a fourth feeder portion 35. The first feeder portion 32 is for connecting two transducer units, the second feeder portion 33 is for connecting two first feeder portions 32, and the third feeder portion 34 is for connecting two second feeder portions 33, the fourth feeder. The portion 35 is for connecting the third feeder portion 34 and the feed point 31.

In order to match the vibrator unit 20, in the present embodiment, the line widths of the first feeder portion 32, the second feeder portion 33, the third feeder portion 34, and the fourth feeder portion 35 need to be set to match the width of the vibrator unit 20. Specifically, the lines of the second feeder portion 33, the third feeder portion 34, and the fourth feeder portion 35 The width is greater than the line width of the first feeder portion 32. The line width of both ends of the second feeder portion 33 is larger than the line width of the middle portion, and the line width of both ends of the third feeder portion 34 is larger than the line width of the middle portion.

1 and 2, the feed network further includes a connection portion 36 that is coupled to the vibrator unit. Optionally, the connecting portion 36 is connected to an end surface of the joint portion where the first vibrator and the second vibrator are connected. Specifically, the connecting portion 36 is connected to the joint portion where the first main body portion 211 and the second main body portion 221 are connected. End face.

In order to match the vibrator unit 20, in the embodiment, the line width of the connecting portion 36 is gradually decreased in a direction away from the vibrator unit. Specifically, the line width of the connecting portion 36 is linearly decreased in a direction away from the vibrator unit.

Referring to FIG. 4, in the present embodiment, the feeding network 3 on the upper surface of the substrate 1 and the feeding network 3 on the lower surface of the substrate 1 are coincident, and the connecting portion 36 disposed on the lower surface of the substrate 1 is connected to the upper surface of the substrate. The portion 36 is mirror imaged to match the vibrator unit 20.

The antenna 100 of the embodiment of the present invention is connected to an external device through a feeder. Specifically, the inner core of the feeder is connected to the feeding network 3 on the substrate 1 side, and the outer conductor of the feeder is connected to the feeding network 3 on the other side of the substrate, and the connection mode is simple and convenient.

In this embodiment, the antenna 100 is connected to the feed line through the feed point 31. Optionally, the feeding point 31 of the upper surface of the substrate 1 and the feeding point 31 of the lower surface thereof are communicated by the same via, and the inner core of the feeding line penetrates the feeding of the via on the upper surface of the substrate 1 On the electrical point 31, the outer conductor of the feed line is directly soldered to the feed point 31 on the lower surface of the substrate 1, and the external device is connected to the antenna through the feed line, thereby transmitting the signal generated by the external device to each of the vibrators using the feed network 3. The unit 20 is transmitted by each vibrator unit 20 to realize the signal transmitting function of the antenna 100; or the signal received by each vibrator unit 20 is transmitted to the external device by the feeding network 3 to realize the signal receiving function. Optionally, the feeder is a coaxial cable.

It should be noted that, in the embodiment of the present invention, the positions of the upper surface and the lower surface of the substrate 1 are interchangeable, that is, the upper surface of the substrate 1 is disposed toward the ground plate 4, and the lower surface of the substrate 1 is separated from the ground. The floor 4 is disposed. When the antenna 100 is connected to an external device through a feeder, the inner core of the feeder is connected to the feeding network 3 on the lower surface of the substrate 1, and the outer conductor of the feeder is connected to the feeding network 3 on the upper surface of the substrate 1.

In this embodiment, the substrate 1 may be a ceramic layer or a plastic layer. Optionally, the dipole 2 and the feed network 3 are printed on both sides of the substrate 1 by a double-sided copper coating process, which is easy to process.

At present, the design of the directional antenna is generally such that the substrate 1 provided with the dipole 2 and the feed network 3 is disposed perpendicularly or obliquely to the ground plate 4. In this embodiment, the grounding plate 4 and the substrate 1 are normally disposed at a predetermined distance, and an air layer is disposed between the grounding plate 1 and the substrate, so that the performance of the antenna 100 is better. Specifically, the grounding plate 4 serves as a reflecting plate of the antenna 100, and the parallel placement thereof can uniformly reflect the radiation generated by the antenna 100 in various directions, so that the antenna 100 has directivity, increases the gain of the antenna 100, and the signal transmission distance is long. . Optionally, the grounding plate 4 is a metal plate, such as an aluminum plate, a steel plate or an alloy plate. Preferably, the grounding plate 4 is an aluminum plate.

In order to make the antenna 100 have better directivity, in some examples, referring to FIG. 3, the area of the grounding plate 4 is larger than the area of the substrate 1, and the signal is directed away from the substrate 1 by the reflection of the grounding plate 4. The direction of the signal is transmitted to achieve the orientation of the antenna 100. In other examples, the area of the grounding plate 4 is equal to the area of the substrate 1, and the antenna 100 is designed to be small in size while ensuring better orientation of the antenna 100.

In order to achieve the fixation between the substrate 1 and the grounding plate 4, the grounding plate 4 can be maintained at a predetermined distance H from the grounding plate 4, so that the performance of the antenna 100 is maintained optimally while ensuring that the antenna 100 can be normally operated. The signal is transmitted, and the substrate 1 and the ground plate 4 are connected by a connecting member.

In some embodiments, the connector is an insulative connector. Optionally, the material of the insulating connecting member is plastic or other insulating material. The material of the insulating connecting member is not limited in the embodiment of the present invention, and any insulating material belongs to the protection scope of the present invention.

In some embodiments, the connector may be a metal connector, and the invention does not The material of the connection is specifically limited. It should be noted, however, that the position of the metal connector on the substrate 1 should be away from the position of the transducer unit 20 and the feeder network 3 on the substrate 1 to prevent the metal connector from affecting the performance of the antenna.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , the substrate 1 is provided with a fixing portion 5 , and the grounding plate 4 is provided with a fixing end that cooperates with the fixing portion 5 . Optionally, the fixing portion 5 and the fixing end may be a fixing hole, a snap groove or other fixing structure.

In some embodiments, the fixing portion 5 and the fixing end are both fixing holes, one end of the connecting member is inserted into the fixing portion 5, and the other end is inserted into the fixing end, thereby The ground plate 4 is stably maintained at a predetermined distance H on the side of the substrate 1, thereby maintaining the performance optimization of the antenna 100.

In some embodiments, the fixing portion 5 and the fixing end are both engaging slots, one end of the insulating connection is fastened on the fixing portion 5, and the other end is fastened on the fixed end. Thereby, the ground plate 4 is stably maintained at a predetermined distance H on the side of the substrate 1, thereby maintaining the performance optimization of the antenna 100.

In order to further enable the grounding plate 4 to be stably disposed at a predetermined distance H of the substrate 1 to maintain the performance of the antenna 100, at least two of the fixing portions 5 and at least two of the fixed ends At least two of the fixing portions 5 cooperate with at least two of the fixed ends to ensure the stability of the connection between the ground plate 4 and the substrate 1 by increasing the connection position between the ground plate 4 and the substrate 1. Optionally, at least two of the fixing portions 5 and at least two of the fixed ends are respectively distributed and distributed on the substrate 1 and the grounding plate 4. Preferably, at least two of the fixing portions 5 are uniformly distributed on the substrate 1, for example, at least two of the fixing portions 5 are evenly distributed around the center of the substrate 1. Correspondingly, at least two fixed ends are also evenly distributed over the ground.

In this embodiment, the preset distance H is adjustable. For example, the preset distance H may be one or more according to an operating frequency (ie, a frequency of a transmission signal), a radiation pattern, and a return loss. To determine. Preferably, the preset distance H is determined according to three factors: a working frequency of the signal, a radiation pattern, and a return loss, thereby balancing the operating frequency, the radiation pattern, and the return loss to ensure the optimization of the performance of the antenna 100. To meet the needs of users. Optionally, the preset distance H is 12 mm (unit: mm), that is, the distance of the antenna 100 in the signal transmission direction is 12 mm, the thickness is small, and the cross section of the antenna 100 is low.

In this embodiment, the grounding plate 4 and the substrate 1 are disposed in parallel to ensure that the performance of the entire antenna 100 can be maintained in an optimal state, and the structure is relatively simple, and between the substrate 1 and the grounding plate 4 The connection is more convenient.

5 and FIG. 6, respectively, the port matching test results of the antenna in the frequency range of 2.2 GHz to 2.8 GHz and the frequency range of 5.0 GHz to 6.5 GHz according to an embodiment of the present invention, and the test results show that the antenna has better performance in the above two frequency ranges. Port matching feature.

Referring to FIG. 7 and FIG. 8, respectively, the gain fluctuation of the antenna in the frequency range of 2.2 GHz to 2.8 GHz and the frequency range of 5.0 GHz to 6.5 GHz according to the embodiment of the present invention indicates that the antenna has a gain fluctuation range of less than 0.5 in the 2.4 GHz band. dB (unit: decibel), the gain fluctuation of the antenna does not exceed 2dB in the full frequency band of 5GHz, and the gain fluctuation range of the antenna in the two frequency bands is small.

Referring to FIG. 9 and FIG. 10, the radiation directions of the antenna in the frequency range of 2.2 GHz to 2.8 GHz and the frequency range of 5.0 GHz to 6.5 GHz according to the embodiment of the present invention respectively indicate that the main lobe of the antenna is clearly pointed in the 2.4 GHz band and the 5 GHz band. The back flap is small and the antenna performance is excellent.

Referring to FIG. 11 and FIG. 12, the main cross-polarization data of the antenna in the frequency range of 2.2 GHz to 2.8 GHz and the frequency range of 5.0 GHz to 6.5 GHz according to the embodiment of the present invention respectively indicate that the antenna has a high frequency in the 2.4 GHz band and the 5 GHz band. The main cross polarization is greater than 30 dB in the main lobe direction.

Referring to FIG. 13 and FIG. 14, respectively, the gain curves of the antenna in the frequency band of 2.2 GHz to 2.8 GHz and the frequency band of 5.0 GHz to 6.5 GHz according to an embodiment of the present invention indicate performance and simulation results of the antenna in the 2.4 GHz band and the 5 GHz band. Good agreement.

It is worth mentioning that the antenna 100 of the embodiment of the present invention can be applied to various systems that need to transmit signals or receive signals, for example, a ground control system of a drone, a drone system, a control system of a robot, or a remote control car. Control system, etc.

The specific application of the antenna 100 of the embodiment of the present invention will be described below by taking the ground control system and the drone system of the drone as examples.

Referring to FIG. 15, an embodiment of the present invention further provides a ground control system for a drone, and the ground control system 200 includes a control terminal 201 and the antenna 100. Optionally, the control terminal 201 may include one or more of a remote controller, a smart phone, a tablet, a laptop, a wearable device (watch, bracelet, etc.).

The control terminal 201 is connected to the antenna 100 through a feeder to implement a communication connection between the control terminal 201 and the antenna 100. Specifically, the inner core of the feed line is connected to the feed network 3 on the substrate 1 side of the antenna 100, and the outer conductor of the feed line is connected to the feed network 3 on the other side of the substrate 1.

In some embodiments, the antenna 100 is disposed outside the control terminal 201, thereby avoiding the influence of the structure of the control terminal 201 itself on the signal transmission of the antenna 100. For example, if the outer casing of the control terminal 201 is made of metal, It is likely that the signal received or transmitted by the antenna 100 will be completely shielded, thereby affecting the normal operation of the device. In some embodiments, the antenna 100 is disposed inside the control terminal 201 to facilitate accommodation of the antenna 100, preventing loss and damage of the antenna 100, and prolonging the service life.

In some embodiments, the control terminal 201 is configured to generate a control command to the drone, and the antenna 100 is configured to transmit the control command to the drone. Specifically, the control terminal 201 generates a control command of the drone and transmits it to the antenna 100 by the feeder, so that the control command is transmitted by the antenna 100 to the drone to realize control of the drone. The antenna 100 of the embodiment of the present invention can be applied to remotely control a drone, and the antenna 100 has high gain and high stability. In addition, the antenna 100 of the embodiment of the present invention can be used for transmission of signals in the 2.4 GHz band and the 5.8 GHz full band, and is applicable to various types of drones.

In some embodiments, the antenna 100 is further configured to receive data information sent by the drone, and the control terminal 201 is further configured to display the data information to display information returned by the drone in real time. Optionally, the data information includes at least one of image data information captured by the photographing device on the drone, location data information of the drone, and power information of the drone, thereby implementing motion of the drone Real-time monitoring.

Referring to FIG. 16, an embodiment of the present invention further provides an unmanned aerial vehicle system including a drone 301 and an antenna 100. The drone can be a rotorcraft or a non-rotor drone.

The drone 301 is connected to the antenna 100 through a feeder to implement a communication connection between the drone 301 and the antenna 100. Specifically, the inner core of the feed line is connected to the feed network 3 on the substrate 1 side of the antenna 100, and the outer conductor of the feed line is connected to the feed network 3 on the other side of the substrate 1.

In some embodiments, the antenna 100 is disposed outside the drone 301 to avoid the influence of the structure of the drone 301 itself on the signal transmission of the antenna 100, for example, if the outer casing of the drone is metal The material is likely to completely shield the signal received or transmitted by the antenna 100, thereby affecting the normal operation of the device. In some embodiments, the antenna 100 is disposed inside the drone 301 to facilitate accommodation of the antenna 100, preventing loss and damage of the antenna 100, and prolonging the service life.

In some embodiments, the antenna 100 is configured to receive a drone control command sent by the control terminal, and the drone 301 is configured to execute a control command received by the antenna. The antenna 100 of the embodiment of the present invention can be applied to a remotely received control command sent by the control terminal, so that the control terminal remotely controls the drone, and the antenna 100 has high gain and high stability. In addition, the antenna 100 of the embodiment of the present invention can be used for transmission of signals in the 2.4 GHz band and the 5.8 GHz full band, and is applicable to various types of drones.

In some embodiments, the drone 301 is configured to acquire data information, and the antenna 100 transmits data information of the drone 301 to the control terminal, so that the control terminal can know in real time. Data information of the human machine 301. Specifically, after acquiring the data information, the drone 301 transmits its data information to the antenna 100, and the data information of the drone 301 is transmitted by the antenna 100, so that the data of the drone 301 transmitted by the antenna is received by the control terminal. information. Optionally, the data information includes at least one of image data information captured by the photographing device on the drone, location data information of the drone, and power information of the drone, thereby implementing motion of the drone Real-time monitoring.

In the description of the present invention, "upper", "lower", "front", "rear", "left", "right" should be understood as the antenna 100 formed by the substrate 1 and the ground plate 4 in order from top to bottom. "Up", "Down", "Before", "After", "Left", "Right" direction.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. The terms "including", "comprising" or "comprising" or "comprising" are intended to include a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also other items not specifically listed Elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The antenna, the ground control system of the unmanned aerial vehicle and the unmanned aerial vehicle system provided by the embodiments of the present invention are described in detail above. The principles and embodiments of the present invention are described in the following, and the description of the above embodiments is described. It is only used to help understand the method of the present invention and its core ideas; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scopes. The contents of this specification are not to be construed as limiting the invention.

Claims

An antenna comprising a substrate, a plurality of dipoles printed on the substrate, a feed network, and a ground plate, wherein the dipole includes a vibrator unit disposed on one side of the substrate and disposed at a vibrator unit on the other side of the substrate, wherein the vibrator unit includes a first vibrator and a second vibrator;

The feed network is connected to each vibrator unit;

The substrate is disposed in parallel with the ground plate at a predetermined distance.
The antenna according to claim 1, wherein said transducer unit comprises a first vibrator and two second vibrators.
The antenna according to claim 1 or 2, wherein the length of the first vibrator is greater than the length of the second vibrator.
The antenna according to claim 2 or 3, wherein the two second vibrators are symmetrically disposed on both sides of the first vibrator.
The antenna according to claim 4, wherein the first vibrator includes a first body portion and a first bent portion, and the two second vibrators are symmetrically disposed on both sides of the first body portion.
The antenna according to claim 5, wherein the first bent portion is provided at one end of the first body portion, and the two second vibrators are symmetrically disposed at the other end of the first body portion.
The antenna according to claim 6, wherein one end of said first body portion is vertically connected to a middle portion of said first bent portion.
The antenna according to any one of claims 5 to 7, wherein the second vibrator includes a second main body portion and a second bent portion, wherein the second main body portion of the two second vibrators is disposed The first body portion is away from one end of the first bent portion, and the first body portion is perpendicular to the second body portion.
The antenna according to claim 8, wherein the second bent portion is vertically disposed at an end of the second body portion away from the first body portion, wherein the first bend of the second bent portion is Extension.
The antenna according to claim 1, wherein the transducer units disposed on each of both sides of the substrate are axially symmetrically distributed.
The antenna according to claim 1, wherein the vibrator unit disposed on one side of the substrate and the vibrator unit on the other side of the substrate are mirror images.
The antenna according to claim 1, wherein said plurality of dipoles are eight dipoles.
The antenna of claim 1 wherein said feed network comprises a feed point.
The antenna according to claim 13, wherein said feed network includes a first feeder portion for connecting two transducer units, and a second feeder portion for connecting two first feeder portions for connection a third feeder portion of the two second feeder portions, a fourth feeder portion for connecting the third feeder portion and the feed point, wherein a line width of the second feeder portion, the second feeder portion, and the fourth feeder portion is greater than The line width of a feeder.
The antenna according to claim 14, wherein the line widths of the two ends of the second feeder portion and the third feeder portion are respectively greater than the line widths of the respective middle portions.
The antenna according to claim 1, wherein said feed network comprises a connection portion connected to the transducer unit, wherein a line width of said connection portion is gradually decreased in a direction away from the transducer unit.
The antenna according to claim 16, wherein

The line width of the connecting portion is gradually decreased in a direction away from the vibrator unit, including:

The line width of the connecting portion is linearly reduced in a direction away from the vibrator unit.
The antenna according to claim 1, wherein the substrate and the ground plate are connected by a connecting member.
The antenna according to claim 1, wherein the area of the ground plate is greater than or equal to the area of the substrate.
The antenna according to claim 1, wherein the predetermined distance is determined according to one or more of an operating frequency, a radiation pattern, and a return loss.
A ground control system for a drone, characterized in that it comprises:

The control terminal and the antenna according to any one of claims 1 to 20, wherein the control terminal is connected to the antenna through a feeder;

The control terminal is configured to generate a control instruction for the drone;

The antenna is for transmitting the control command to the drone.
The system according to claim 21, wherein said antenna is further configured to receive data information transmitted by the drone; and said control terminal is further configured to display said data information.
The system according to claim 22, wherein said data information comprises at least one or more of image data information captured by the photographing device on the drone, position data information of the drone, and electric quantity information of the drone Kind.
The system according to claim 21, wherein the inner core of the feed line is connected to a feed network on one side of the antenna of the antenna, and the outer conductor of the feed line is connected to a feed network on the other side of the substrate.
An unmanned aerial vehicle system, including a drone, characterized in that it further comprises:

The antenna according to any one of claims 1 to 20, wherein the drone is connected to the antenna through a feeder;

The antenna is configured to receive a drone control command sent by the control terminal and send the command to the drone;

The drone is configured to execute the control instruction.
The system of claim 25 wherein:

The drone is used to acquire data information;

The antenna transmits data information of the drone to the control terminal.
The system according to claim 26, wherein said data information comprises at least one or more of image data information captured by the photographing device on the drone, position data information of the drone, and electric quantity information of the drone Kind.
The system according to claim 25, wherein the inner core of the feed line is connected to a feed network on one side of the substrate of the antenna, and the outer conductor of the feed line is connected to a feed network on the other side of the substrate.