CN219371375U - Unmanned aerial vehicle's picture passes antenna, unmanned aerial vehicle foot rest and unmanned aerial vehicle suitable for unmanned aerial vehicle - Google Patents

Abstract

The utility model discloses an image transmission antenna suitable for an unmanned aerial vehicle, an unmanned aerial vehicle foot rest and the unmanned aerial vehicle, wherein the antenna comprises a substrate, a radiation unit, a grounding unit and a coaxial cable, the radiation unit comprises a first radiation unit and a second radiation unit which are arranged on the surface of the substrate, the coaxial cable comprises a core wire and a braiding layer, the core wire is welded with the first radiation unit, a first position of the braiding layer is welded with the second radiation unit, a second position of the braiding layer is welded with the grounding unit, the grounding unit is connected with one end of a connecting conductor, and the other end of the connecting conductor is configured to be electrically connected to a motor of the unmanned aerial vehicle. The utility model can play a role in expanding the working frequency band of the antenna, is beneficial to improving the performance of the antenna, is beneficial to reducing the size and weight of the antenna, and meets the requirements of miniaturization and light weight of the unmanned aerial vehicle.

Description

Unmanned aerial vehicle's picture passes antenna, unmanned aerial vehicle foot rest and unmanned aerial vehicle suitable for unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of unmanned aerial vehicle antennas, in particular to a picture transmission antenna suitable for an unmanned aerial vehicle, an unmanned aerial vehicle foot rest and the unmanned aerial vehicle.

Background

The unmanned aerial vehicle industry has developed to the present, and can see their figures and looks in various scenes. Unmanned aerial vehicle's application is very extensive, and plant protection operation, electric power inspection, emergency rescue, communication relay etc. in civil field are scout, control, strike etc. in the military field. These applications are not separated from the unmanned aerial vehicle's image transmission system.

Unmanned aerial vehicle image transmission system is the important component part of unmanned aerial vehicle. Along with the wide application of unmanned aerial vehicle in aspects such as take photo by plane, security protection, agriculture, electric power and movie, unmanned aerial vehicle image transmission system is also more and more paid attention to, and to its long distance and steadily transmit the shooting video, when unmanned aerial vehicle flies away from ground operator's sight, when going on beyond the sight distance flight, also can be with unmanned aerial vehicle in the real-time equipment of ground staff that returns of picture that the flight in-process was shot, supplies operating personnel to judge unmanned aerial vehicle's state, carries out reasonable operation, completion of auxiliary task. Therefore, the unmanned aerial vehicle image transmission antenna has high requirements, and high efficiency and the omnidirectional image transmission antenna are required to ensure the real-time transmission of signals. Currently, unmanned aerial vehicles are miniaturized and light in weight, and the space reserved for an antenna is limited, so that the antenna performance is affected, the antenna efficiency is low, the directivity is high, the data transmission is unstable, and the control flight distance is short.

Disclosure of Invention

The utility model aims to provide a picture transmission antenna suitable for an unmanned aerial vehicle, an unmanned aerial vehicle foot rest and the unmanned aerial vehicle, which are beneficial to solving at least one technical problem in the background art.

In order to achieve the above object, the present utility model provides a graphic antenna suitable for an unmanned aerial vehicle, which is characterized by comprising a substrate, a radiation unit, a grounding unit and a coaxial cable, wherein the radiation unit comprises a first radiation unit and a second radiation unit which are arranged on the surface of the substrate, the coaxial cable comprises a core wire and a braiding layer, the core wire is welded with the first radiation unit, a first position of the braiding layer is welded with the second radiation unit, a second position of the braiding layer is welded with the grounding unit, the grounding unit is connected with one end of a connecting conductor, and the other end of the connecting conductor is configured to be electrically connected to a motor of the unmanned aerial vehicle.

Optionally, the connection conductor is a metal spring plate.

Optionally, the grounding unit includes a front ground and a back ground which are respectively disposed on the front and back surfaces of the substrate and are connected to each other, the second position of the braid is welded to the front ground, and the metal elastic sheet is connected to the back ground.

Optionally, at least one jack is arranged between the front surface ground and the back surface ground, the metal elastic sheet is provided with at least one pin, and the pin is inserted into the corresponding jack.

Optionally, the substrate is long and narrow, and the first radiation unit, the second radiation unit and the grounding unit are sequentially arranged along the length direction of the substrate.

In order to achieve the above object, the present utility model further provides a stand for an unmanned aerial vehicle, which comprises a stand body and an antenna as described above, wherein the antenna is installed in an inner space of the stand body.

In order to achieve the above purpose, the utility model also provides an unmanned aerial vehicle, which comprises the unmanned aerial vehicle foot rest, a horn and a motor, wherein the upper end of the foot rest body is arranged on the lower side of the horn, and the motor is arranged on the upper side of the horn.

Optionally, the motor is fixedly connected to the horn through a fastener, the fastener is electrically connected to the motor, and the fastener is exposed to the lower side of the horn for connection of the connection conductor.

Optionally, the fastener is a screw, a head of the screw is exposed at the lower side of the horn, and the connecting conductor is connected to the head of the screw.

Optionally, the battery core of the motor is connected to the horn through the fastener.

According to the utility model, the grounding unit of the antenna is electrically connected to the motor of the unmanned aerial vehicle by the connecting conductor, so that the motor of the unmanned aerial vehicle can be coupled with the antenna to generate resonance, further the function of expanding the working frequency band of the antenna can be achieved, the performance of the antenna can be improved, the size and weight of the antenna can be reduced, and the unmanned aerial vehicle can be miniaturized and light in weight.

Drawings

Fig. 1 is a schematic structural diagram of a graphic antenna suitable for an unmanned aerial vehicle according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of the hidden coaxial cable portion of fig. 1.

Fig. 3 is a schematic view of the structure of fig. 2 from another view angle.

Fig. 4 is a schematic structural view of the coaxial cable of fig. 1.

Fig. 5 is a schematic structural view of a tripod of a unmanned aerial vehicle according to an embodiment of the present utility model.

Fig. 6 is a schematic view of a partial structure of a unmanned aerial vehicle according to an embodiment of the present utility model.

Fig. 7 is a schematic view of a partial structure of a horn and a motor according to an embodiment of the present utility model.

Fig. 8 is a schematic diagram of a partial structure of a horn, a motor, and an antenna according to an embodiment of the present utility model.

Fig. 9 is a return loss diagram of an antenna according to an embodiment of the present utility model.

Fig. 10 is a smith chart of an antenna according to an embodiment of the utility model.

Fig. 11 is a voltage standing wave ratio diagram of an antenna according to an embodiment of the present utility model.

Detailed Description

In order to describe the technical content, the constructional features, the achieved objects and effects of the present utility model in detail, the following description is made in connection with the embodiments and the accompanying drawings.

Referring to fig. 1 to 4, an embodiment of the present utility model discloses a graphic antenna suitable for an unmanned aerial vehicle, which comprises a substrate 10, a radiating unit, a grounding unit 20 and a coaxial cable 30, wherein the radiating unit comprises a first radiating unit 40 and a second radiating unit 50 arranged on the surface of the substrate 10, the coaxial cable 30 comprises a core wire 31 and a braid 32, the core wire 31 is welded with the first radiating unit 40, a first position of the braid 32 is welded with the second radiating unit 50, a second position of the braid 32 is welded with the grounding unit 20, the grounding unit 20 is connected with one end of a connection conductor, and the other end of the connection conductor is configured to be electrically connected to a motor 80 (as shown in fig. 8) of the unmanned aerial vehicle. Specifically, the end of the coaxial cable 30 away from the antenna is connected to a module-end rf connector (not shown) through a connector 33.

According to the utility model, the grounding unit 20 of the antenna is electrically connected to the motor 80 of the unmanned aerial vehicle by the connecting conductor, so that the motor 80 of the unmanned aerial vehicle can be coupled with the antenna to generate resonance, thereby playing a role in expanding the working frequency band of the antenna, being beneficial to improving the performance of the antenna, reducing the size and weight of the antenna, and meeting the requirements of miniaturization and light weight of the unmanned aerial vehicle.

In some embodiments, the connection conductors are metal clips 60 to facilitate connection. But is not limited thereto.

Specifically, the grounding unit 20 includes a front ground 21 and a back ground 22 disposed on the front and back surfaces of the substrate 10 and connected to each other, the second position of the braid 32 is welded to the front ground 21, and the metal elastic sheet 60 is connected to the back ground 22, so that the connection between the metal elastic sheet 60 and the grounding unit 20 and the connection between the coaxial cable 30 and the grounding unit 20 do not interfere.

Further, at least one jack 23 is provided between the front surface 21 and the back surface 22, and the metal spring plate 60 has at least one pin 61, and the pin 61 is inserted into the corresponding jack 23. The metal spring plate 60 is convenient to firmly connect by the arrangement of the pin 61 and the jack 23 which are matched with each other.

Further, the metal spring plate 60 includes a connecting arm 63, the metal spring plate 60 is connected to the opposite surface 22 of the grounding unit 20 through the connecting arm 63, the other end of the connecting arm 63 is bent to extend out of a supporting piece 64, and the supporting piece 64 is connected to the fastening piece 81 through a spacer 62 (as shown in fig. 7).

In some embodiments, the substrate 10 is elongated, and the first radiation unit 40, the second radiation unit 50, and the ground unit 20 are sequentially arranged along the length direction of the substrate 10. Of course, it is not limited thereto.

Specifically, the coaxial cable 30 is stripped at a second location corresponding to the solder joint location of the ground element 20 to expose the braid 32.

In some embodiments, the first radiating element 40 comprises a plurality of monopole oscillator arms operating in different frequency bands, and the second radiating element 50 comprises a plurality of microstrip lines operating in different frequency bands, each monopole oscillator arm respectively cooperating with a different microstrip line to cover a different frequency band.

Specifically, the first radiating element 40 includes one first monopole element arm 41, and the second radiating element 50 includes two first microstrip lines 51, and the first microstrip lines 51 can increase the bandwidth and tune the directivity of the antenna. The first frequency band, specifically 1430MHz-1454MHz, is covered by the cooperation of the first monopole oscillator arm 41 and the two first microstrip lines 51. The first radiating element 40 comprises two second monopole oscillator arms 42 and the second radiating element 50 comprises two second microstrip lines 52, the second microstrip lines 52 being capable of increasing the bandwidth and tuning the antenna directivity. The second frequency band, in particular 2400MHz-2480MHz, is covered by the cooperation of two second monopole oscillator arms 42 and two second microstrip lines 52. The first radiating element 40 comprises two third monopole oscillator arms 43 and the second radiating element 50 comprises two third microstrip lines 53, the third microstrip lines 53 being capable of increasing the bandwidth and tuning the antenna directivity. The third frequency band, specifically 5150MHz-5880MHz, is covered by the cooperation of the two third monopole oscillator arms 43 and the two third microstrip lines 53. It will be appreciated that the forms of monopole oscillator arms and microstrip lines described above are not limited to that shown in the drawings.

In addition, in a specific example, the operating band at 830MHz-930MHz may be achieved by resonance generated by the coupling of the motor 80 of the drone with the antenna.

In a specific example, the motor 80 and antenna are coupled to each other such that the antenna can operate in five frequency bands and advantageously maintain omni-directivity of the pattern within each band.

In a specific example, the substrate 10 has a relative dielectric constant of 4.4 and a thickness of 0.8mm, and the planar dimensions of the substrate 10 are 73.3×14.1mm ² The total length of the 50 ohm impedance coaxial cable 30 is 351mm.

Referring to fig. 1 to 5, the utility model further discloses a stand of an unmanned aerial vehicle, which comprises a stand body 70 and an antenna as described above, wherein the antenna is installed in an inner space of the stand body 70.

By installing the antenna in the internal space of the stand body 70, the space of the unmanned aerial vehicle is not additionally occupied basically, and the miniaturization of the unmanned aerial vehicle is facilitated.

Referring to fig. 1 to 8, the present utility model further discloses an unmanned aerial vehicle, which includes the unmanned aerial vehicle foot rest, the horn 90 and the motor 80 as described above, wherein the upper end of the foot rest body 70 is mounted on the lower side of the horn 90, and the motor 80 is mounted on the upper side of the horn 90.

According to the utility model, the grounding unit 20 of the antenna is electrically connected to the motor 80 of the unmanned aerial vehicle by the connecting conductor, so that the motor 80 of the unmanned aerial vehicle can be coupled with the antenna to generate resonance, thereby playing a role in expanding the working frequency band of the antenna, being beneficial to improving the performance of the antenna, reducing the size and weight of the antenna, and meeting the requirements of miniaturization and light weight of the unmanned aerial vehicle.

In some embodiments, the motor 80 is fixedly coupled to the horn 90 by fasteners 81, the fasteners 81 being electrically coupled to the motor 80, the fasteners 81 being exposed on the underside of the horn 90 for connection of the connection conductors. The connection of the ground unit 20 of the antenna to the motor 80 is facilitated by the connection conductor to the fastener 81.

Specifically, the fastener 81 is a screw, the head of which is exposed to the underside of the horn 90, and the connection conductor is connected to the head of the screw. In a specific example, a metal spring piece 60 as a connection conductor is connected to the head of the screw through a spacer 62.

Specifically, the battery core of the motor 80 is connected to the horn 90 through the fastener 81, that is, the battery core of the motor 80 is coupled with the antenna to expand the operating band of the antenna and improve the performance of the antenna.

Fig. 9 shows a return loss plot of an antenna in use in an example of the utility model. It can be seen that the antenna can reach approximately-9 dB in the low frequency band 830-930MHz, the intermediate frequency band 1430-2480MHz and the high frequency band 5150-5850 MHz.

In addition, fig. 10 and 11 show smith chart and voltage standing wave ratio chart of the antenna in use in the example of the present utility model, respectively, so that it can be seen that the antenna performance corresponding to the antenna of the present utility model is excellent.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the scope of the claims, which follow, as defined in the claims.

Claims (10)

1. The utility model provides a graph that is applicable to unmanned aerial vehicle passes antenna, its characterized in that includes base plate, radiating element, earth element and coaxial cable, the radiating element is including setting up first radiating element and the second radiating element on base plate surface, the coaxial cable includes heart yearn and weaving layer, the heart yearn with first radiating element welding, the first position of weaving layer with second radiating element welding, the second position of weaving layer with earth element welding, earth element connects one end of a connecting conductor, the other end of connecting conductor is configured to the motor of electricity to be connected to unmanned aerial vehicle.

2. The graphic antenna for a unmanned aerial vehicle of claim 1,

the connecting conductor is a metal spring plate.

3. The image antenna for a drone of claim 2, wherein,

the grounding unit comprises a front surface ground and a back surface ground which are respectively arranged on the front surface and the back surface of the substrate and are mutually connected, the second position of the woven layer is welded with the front surface ground, and the metal elastic sheet is connected with the back surface ground.

4. The graphic transmitting antenna for a unmanned aerial vehicle of claim 3,

at least one jack is arranged between the front surface ground and the back surface ground, the metal elastic sheet is provided with at least one pin, and the pin is inserted into the corresponding jack.

5. The graphic antenna for a unmanned aerial vehicle of claim 1,

the substrate is long and narrow, and the first radiation unit, the second radiation unit and the grounding unit are sequentially arranged along the length direction of the substrate.

6. A tripod for an unmanned aerial vehicle, comprising a tripod body and an antenna as claimed in any one of claims 1 to 5, said antenna being mounted in an interior space of said tripod body.

7. An unmanned aerial vehicle comprising the unmanned aerial vehicle foot rest, the horn and the motor according to claim 6, wherein the upper end of the foot rest body is mounted on the lower side of the horn, and the motor is mounted on the upper side of the horn.

8. The unmanned aerial vehicle of claim 7, wherein the unmanned aerial vehicle comprises,

the motor is fixedly connected to the horn through a fastener, the fastener is electrically connected with the motor, and the fastener is exposed to the lower side of the horn for connection of the connecting conductor.

9. The unmanned aerial vehicle of claim 8, wherein the unmanned aerial vehicle comprises,

the fastener is a screw, the head of the screw is exposed at the lower side of the horn, and the connecting conductor is connected with the head of the screw.

10. The unmanned aerial vehicle of claim 8, wherein the unmanned aerial vehicle comprises,

and the battery core of the motor is connected with the horn through the fastener.