Unmanned aerial vehicle antenna structure

Abstract

The utility model discloses an unmanned aerial vehicle antenna structure comprising a PCB, a radiation oscillator, an antenna ground and a radio frequency line, the radiation oscillator and the antenna ground are printed on the PCB, a first end of the radio frequency line is connected with the radiation oscillator and the antenna ground, the antenna ground is provided with conductive foam, and a second end of the radio frequency line is connected with the radiation oscillator and the antenna ground. The conductive foam is used for increasing the contact area between the antenna ground and the unmanned aerial vehicle metal part. According to the unmanned aerial vehicle antenna structure provided by the utility model, the conductive foam is added on the antenna ground of the antenna circuit, so that the contact surface between the antenna ground and the metal part of the unmanned aerial vehicle is increased, the interference of a radio frequency line on signals is reduced, and the antenna can better transmit and receive the signals.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to an antenna structure for an unmanned aerial vehicle (UAV). Background Art

[0002] A UAV is controlled by transmitting signals through wireless electromagnetic waves and requires an antenna as a medium to receive and transmit wireless signals, and the antenna can enhance the wireless signal. At present, a 5G antenna generally consists of a radiation oscillator, an antenna ground, and a radio frequency (RF) line. Due to the large number of frequency bands of the 5G antenna, the internal environment of the UAV requires that the length of the RF line of the antenna is relatively long, so that the RF line has a large interference with the signal inside the UAV, resulting in a large loss of antenna signal transmission and relatively weak signal transmission and emission.

[0003] Therefore, the prior art needs to be improved. Summary of the Utility Model

[0004] In view of this, the utility model provides an antenna structure for a UAV, which is used to solve the problem of large loss of antenna signal transmission caused by RF line interference in the prior art.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides an antenna structure for a UAV, including a printed circuit board (PCB), a radiation oscillator, an antenna ground, and an RF line. The radiation oscillator and the antenna ground are printed on the PCB. The first end of the RF line is connected to the radiation oscillator and the antenna ground. A conductive foam is provided on the antenna ground, and the conductive foam is used to increase the contact area between the antenna ground and the metal components of the UAV.

[0006] Preferably, the antenna structure for the UAV further includes an antenna housing and a three-interface metal connector. The PCB is fixedly installed in the antenna housing. The antenna housing is provided with a first interface, and the three-interface metal connector is provided with a second interface, a third interface, and a fourth interface. The antenna housing and the three-interface metal connector are connected by docking the first interface with the second interface. The third interface is used to dock with the UAV body, and the fourth interface is used to install the arm of the UAV; the first interface and the second interface are annular.

[0007] Preferably, the antenna structure for the UAV further includes a grounding metal sheet. A first opening is formed in the antenna housing at a position corresponding to the conductive foam. One end of the grounding metal sheet is attached to the three-interface metal connector, and the other end of the grounding metal sheet passes through the first opening and is attached to the conductive foam; the first opening is located inside the first interface.

[0008] Preferably, one or more first snap structures are provided on the three-interface metal connector, and one or more second snap structures are correspondingly provided on the antenna housing. The first snap structure and the second snap structure are snapped together when the first interface and the second interface are docked. The first snap structure is located inside the second interface, and the second snap structure is located inside the first interface.

[0009] Preferably, the UAV antenna structure further includes one or more first threaded fasteners. One or more lugs are provided on the three-interface metal connector, and first threaded holes are correspondingly provided on the lugs. First mounting holes are correspondingly provided on the antenna housing. The threaded section of the first threaded fastener passes through the first mounting hole and is then screwed into the first threaded hole, thereby realizing the fixed connection between the antenna housing and the three-interface metal connector.

[0010] Preferably, the antenna housing includes a housing body and a housing connection part. The first interface is located on the housing connection part. A fifth interface is further provided on the housing connection part. A sixth interface is provided on the housing body. The housing connection part and the housing body are connected by docking the fifth interface and the sixth interface to form a housing cavity, and the PCB board is installed in the housing cavity.

[0011] Preferably, a plurality of support ribs are provided in the housing cavity for supporting and clamping the PCB board.

[0012] Preferably, the UAV antenna structure further includes one or more second threaded fasteners. One or more second mounting holes are correspondingly provided on the three-interface metal connector. The second threaded fastener is used to threadedly connect with the UAV body after passing through the second mounting hole during installation, thereby realizing the fixed connection between the three-interface metal connector and the UAV body. The second mounting hole is located inside the second interface.

[0013] Preferably, a first wiring hole is provided on the antenna housing, and a second wiring hole is provided on the three-interface metal connector. The second end of the RF cable sequentially passes through the first wiring hole and the second wiring hole. The first wiring hole is located inside the first interface, and the second wiring hole is located inside the second interface.

[0014] Preferably, one or more limit pin holes are provided on the fourth interface for installing limit pins after the fourth interface is docked with the UAV arm.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] 1. Add conductive foam on the antenna ground of the antenna line to increase the contact area between the antenna ground and the metal part of the drone, reduce the interference of the RF line on the signal, and enable the antenna to better transmit and receive signals.

[0017] 2. In the preferred solution, the antenna housing is used as the carrier of the antenna, and then it is installed on the drone through a three-interface metal connector, which is convenient for installation and easy to repair.

[0018] 3. In the preferred solution, the antenna housing and the three-interface metal connector are docked through the first interface and the second interface to form an interface cavity. The head of the second threaded fastener, the first snap structure, the second snap structure, the grounding metal sheet, and the routing of the RF line are all hidden in the interface cavity. The connection method is stable and not easy to damage, and it also ensures the simplicity and smoothness of the outside of the drone antenna structure as much as possible. While ensuring the appearance is beautiful, it is also beneficial to reduce the impact of the drone antenna structure on the performance of the drone. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Among them:

[0021] Figure 1 It is a schematic diagram of the positional relationship among the PCB board, the radiation element, the antenna ground, the RF line, and the conductive foam in an embodiment of the present invention;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the drone antenna structure in an embodiment of the present invention;

[0023] Figure 3 It is a three-dimensional exploded structure schematic diagram of the drone antenna structure in an embodiment of the present invention;

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the three-interface metal connector in an embodiment of the present invention;

[0025] Figure 5 It is a three-dimensional structure schematic diagram of the housing connection part in an embodiment of the present invention;

[0026] Figure 6 It is a main view sectional structure schematic diagram of the drone antenna structure in an embodiment of the present invention.

[0027] The description of the reference numerals in the drawings is as follows: 1. PCB board; 2. Radiation element; 3. Antenna ground; 4. RF cable; 5. Conductive foam; 6. Antenna housing; 61. Housing connection part; 611. First interface; 612. First opening; 613. Second snap structure; 614. First mounting hole; 615. Fifth interface; 616. First wiring hole; 62. Housing body; 621. Sixth interface; 622. Support rib; 7. Three-interface metal connector; 71. Second interface; 72. Third interface; 73. Fourth interface; 731. Limit pin hole; 74. First snap structure; 75. Hanging ear; 751. First threaded hole; 76. Second mounting hole; 77. Second wiring hole; 8. Grounding metal sheet; 9. First threaded fastener; 10. Second threaded fastener; 100. Interface cavity; 200. Housing cavity. Detailed implementation manners

[0028] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0030] It can be understood that the singular forms of "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc., specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0031] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only. In the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0032] In addition, the terms "arranged", "provided with", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Referring to Figure 1 , an embodiment of the present utility model provides an unmanned aerial vehicle antenna structure, including a PCB board 1, a radiation element 2, an antenna ground 3 and a radio frequency line 4. The radiation element 2 and the antenna ground 3 are printed on the PCB board 1. The first end of the radio frequency line 4 is connected to the radiation element 2 and the antenna ground 3. A conductive foam 5 is provided on the antenna ground 3, and the conductive foam 5 is used to increase the contact area between the antenna ground 3 and the metal parts of the unmanned aerial vehicle.

[0034] In some alternative embodiments, such as Figures 1 to 6As shown, the UAV antenna structure further includes an antenna housing 6 and a three-interface metal connector 7. The PCB board 1 is fixedly installed inside the antenna housing 6. The antenna housing 6 is provided with a first interface 611. The three-interface metal connector 7 is provided with a second interface 71, a third interface 72, and a fourth interface 73. The antenna housing 6 and the three-interface metal connector 7 are connected by docking the first interface 611 with the second interface 71. The third interface 72 is used to dock with the UAV body, and the fourth interface 73 is used to install the arm of the UAV. The first interface 611 and the second interface 71 are annular. After the first interface 611 and the second interface 71 are docked, an interface cavity 100 is formed.

[0035] In some alternative embodiments, as Figure 3 and Figure 5 shown, the UAV antenna structure further includes a grounding metal sheet 8. A first opening 612 is formed at a position on the antenna housing 6 corresponding to the conductive foam 5. One end of the grounding metal sheet 8 is attached to the three-interface metal connector 7, and the other end of the grounding metal sheet passes through the first opening 612 and is attached to the conductive foam 5. Preferably, the first opening 612 is located inside the first interface 611, and the grounding metal sheet 8 is located inside the interface cavity 100. It should be noted that using the grounding metal sheet 8 to connect the conductive foam 5 and the three-interface metal connector 7 is only a preferred embodiment of the present invention. In some other alternative embodiments, the direct contact between the conductive foam 5 and the three-interface metal connector 7 can also be achieved by adjusting the thickness of the conductive foam 5, or the connection of the three-interface metal connector 7 or the UAV body can be achieved through conductive metal bolts.

[0036] In some alternative embodiments, as Figures 2 to 6 shown, the three-interface metal connector 7 is provided with more than one first snap structure 74, and the antenna housing 6 is correspondingly provided with more than one second snap structure 613. The first snap structure 74 and the second snap structure 613 are snapped together when the first interface 611 and the second interface 71 are docked. The first snap structure 74 is located inside the second interface 71, and the second snap structure 613 is located inside the first interface 611. That is, after assembly, both the first snap structure 74 and the second snap structure 613 are located inside the interface cavity 100.

[0037] In some alternative embodiments, as Figures 2 to 5As shown, the drone antenna structure further includes more than one first threaded fastener 9. More than one lugs 75 are provided on the three-interface metal connector 7. Corresponding first threaded holes 751 are provided on the lugs 75, and corresponding first mounting holes 614 are provided on the antenna housing 6. The threaded section of the first threaded fastener 9 passes through the first mounting hole 614 and then is screwed into the first threaded hole 751, thereby realizing the fixed connection between the antenna housing 6 and the three-interface metal connector 7.

[0038] In some alternative embodiments, as Figures 2 to 5 shown, the antenna housing 6 includes a housing connection portion 61 and a housing body 62. The first interface 611 is located on the housing connection portion 61. A fifth interface 615 is also provided on the housing connection portion 61. A sixth interface 621 is provided on the housing body 62. The housing connection portion 61 and the housing body 62 are connected by docking the fifth interface 615 and the sixth interface 621 to form a housing cavity 200. The PCB board 1 is installed in the housing cavity 200. Specifically, during installation, first insert the PCB board 1 into the housing body 62 from the sixth interface 621, and then cover the housing connection portion 61. At this time, one end of the PCB board 1 exposed outside the housing body 62 is inserted into the housing connection portion 61 from the fifth interface 615.

[0039] In some alternative embodiments, as Figure 4 and Figure 5 shown, a plurality of support ribs 622 are provided in the housing cavity 200 for supporting and clamping the PCB board 1.

[0040] In some alternative embodiments, as Figure 2 、 Figure 3 and Figure 5 shown, the drone antenna structure further includes more than one second threaded fastener 10. Corresponding second mounting holes 76 are provided on the three-interface metal connector 7. The second threaded fastener 10 is used to threadedly connect with the drone body after passing through the second mounting hole 76 during installation, thereby realizing the fixed connection between the three-interface metal connector 7 and the drone body. The second mounting hole 76 is located inside the second interface 71, and the head of the second threaded fastener 10 is located in the interface cavity 100.

[0041] In some alternative embodiments, as Figure 2 、 Figure 3 and Figure 5 shown, it should be noted that Figure 2 and Figure 4The RF cable 4 is not shown. A first wiring hole 616 is provided on the housing connecting portion 61, and a second wiring hole 77 is provided on the three-interface metal connector 7. During installation, the second end of the RF cable 4 sequentially passes through the first wiring hole 616 and the second wiring hole 77 and then is connected to the circuit board inside the drone body via the third interface. The first wiring hole 616 is located inside the first interface 611, and the second wiring hole 77 is located inside the second interface 71, that is, the RF cable 4 routes inside the interface cavity 100 and will not be exposed outside the drone antenna structure.

[0042] In some alternative embodiments, as Figure 2 , Figure 3 and Figure 5 shown, one or more limit pin holes 731 are provided on the fourth interface 73 for installing limit pins after the fourth interface 73 is docked with the drone arm.

[0043] In some alternative embodiments, as Figure 2 , Figure 3 and Figure 5 shown, the three-interface metal connector 7 is a tubular connector, with its two ends serving as the third interface 72 and the fourth interface 73 respectively, and the second interface 71 is provided on the side of the three-interface metal connector 7.

[0044] Implementing the drone antenna structure provided by the embodiments of the present invention has the following beneficial effects:

[0045] 1. Adding conductive foam 5 to the antenna ground of the antenna line increases the contact area between the antenna ground 3 and the metal part of the drone, reduces the interference of the RF cable 4 to the signal, and enables the antenna to better transmit and receive signals;

[0046] 2. In the preferred embodiment, the antenna housing 6 is used as the carrier of the antenna, and then it is installed on the drone through the three-interface metal connector 7, which is convenient for installation and easy to repair;

[0047] 3. In the preferred embodiment, the antenna housing 6 and the three-interface metal connector 7 are docked through the first interface 611 and the second interface 71 to form an interface cavity 100. The head of the second threaded fastener 10, the first snap structure 74, the second snap structure 613, the grounding metal sheet 8, and the routing of the RF cable 4 are all hidden in the interface cavity 100. The connection method is stable and not easily damaged, and as much as possible, the exterior of the drone antenna structure is kept simple and smooth, ensuring the appearance is beautiful while also helping to reduce the impact of the drone antenna structure on the performance of the drone.

[0048] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An unmanned aerial vehicle antenna structure, characterized in that: It includes a PCB board, a radiating array, an antenna ground and a radio frequency line. The radiating array and the antenna ground are printed on the PCB board. The first end of the radio frequency line is connected to the radiating array and the antenna ground. A conductive foam is provided on the antenna ground. The conductive foam is used to increase the contact area between the antenna ground and the metal parts of the drone.

2. The UAV antenna structure according to claim 1, characterized in that: The UAV antenna structure also includes an antenna housing and a three-interface metal connector. The PCB board is fixedly installed in the antenna housing. The antenna housing is provided with a first interface. The three-interface metal connector is provided with a second interface, a third interface and a fourth interface. The antenna housing and the three-interface metal connector are connected by docking the first interface and the second interface. The third interface is used to dock the UAV body, and the fourth interface is used to install the UAV arm. The first interface and the second interface are ring-shaped.

3. The UAV antenna structure according to claim 2, characterized in that: The drone antenna structure also includes a grounded metal sheet. A first opening is provided on the antenna shell. One end of the grounded metal sheet is bonded to the three-interface metal connector, and the other end of the grounded metal sheet passes through the first opening and is bonded to the conductive foam. The first opening is located on the inner side of the first interface.

4. The UAV antenna structure according to claim 2, characterized in that: There is one or more first snap-in structures on the three-interface metal connector, and there is one or more second snap-in structures correspondingly on the antenna shell. The first snap-in structures and the second snap-in structures engage with each other when the first interface and the second interface are docked; the first snap-in structure is located on the inner side of the second interface, and the second snap-in structure is located on the inner side of the first interface.

5. The UAV antenna structure according to claim 2 or 4, characterized in that: The drone antenna structure also includes one or more first threaded fasteners, and the three-interface metal connector is provided with one or more hanging ears, and the hanging ears are correspondingly provided with first threaded holes, and the antenna shell is correspondingly provided with first mounting holes; the threaded section of the first threaded fastener passes through the first mounting hole and is screwed into the first threaded hole, thereby realizing a fixed connection between the antenna shell and the three-interface metal connector.

6. The UAV antenna structure according to claim 2, characterized in that: The antenna shell includes a shell body and a shell connecting part. The first interface is located on the shell connecting part. The shell connecting part is also provided with a fifth interface. The shell body is provided with a sixth interface. The shell connecting part and the shell body are connected by docking the fifth interface and the sixth interface to form a shell cavity. The PCB board is installed in the shell cavity.

7. The UAV antenna structure according to claim 6, characterized in that: A plurality of supporting ribs are arranged in the housing cavity for supporting and clamping the PCB board.

8. The UAV antenna structure according to claim 2, characterized in that: The drone antenna structure also includes one or more second threaded fasteners, and the three-interface metal connector is provided with one or more second mounting holes. The second threaded fasteners are used to pass through the second mounting holes during installation and then be threadedly connected to the drone body, thereby achieving a fixed connection between the three-interface metal connector and the drone body; the second mounting hole is located on the inner side of the second interface.

9. The UAV antenna structure according to claim 2, characterized in that: A first wiring hole is provided on the antenna shell, and a second wiring hole is provided on the three-interface metal connector. The second end of the RF line passes through the first wiring hole and the second wiring hole in sequence; the first wiring hole is located on the inner side of the first interface, and the second wiring hole is located on the inner side of the second interface.

10. The UAV antenna structure according to claim 2, characterized in that: The fourth interface is provided with one or more limit pin holes for installing the limit pins after the fourth interface is docked with the arm of the drone.

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