Wide-band omnidirectional antenna for unmanned aerial vehicle

Abstract

The utility model discloses a wide frequency band omnidirectional antenna for an unmanned aerial vehicle, which comprises a radio frequency cable, an antenna substrate, four first expansion circuit boards and four second expansion circuit boards, one side of the antenna substrate is provided with a first main circuit layer, and the other side of the antenna substrate is provided with a second main circuit layer. The antenna substrate is also provided with four first mounting parts and four second mounting parts, one part of the first main circuit layer is located at the first mounting parts, and one part of the second main circuit layer is located at the second mounting parts; each first mounting part is provided with a first expansion circuit board, and the first expansion circuit board is electrically connected with the first main circuit layer; each second mounting part is provided with a second expansion circuit board, and the second expansion circuit board is electrically connected with the second main circuit layer; the inner core of the radio frequency cable is electrically connected with the first main circuit layer and the second main circuit layer; the wide-frequency-band omnidirectional antenna for the unmanned aerial vehicle can effectively cover the frequency band of 2000MHz-2500MHz, is convenient to change the transmitting frequency band, and avoids frequency band congestion.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a wide-band omnidirectional antenna for unmanned aerial vehicles. Background Art

[0002] With the development of UAV technology, UAVs are widely used in aerial photography and mapping, and the requirements for long-distance image transmission of UAVs are becoming higher and higher. Antennas are a necessary component for UAVs to achieve long-distance image transmission, and the performance of antennas is directly related to the distance of image transmission. However, existing antennas are difficult to meet the requirements of long-distance image transmission, and frequency band congestion is prone to occur in the 2000MHz-2500MHz frequency band. Especially in the case of multiple devices and high-power applications, the problem of mutual electromagnetic interference between UAV devices is becoming increasingly serious. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a wide-band omnidirectional antenna for unmanned aerial vehicles to solve the problem of frequency band congestion that is prone to occur in the 2000MHz-2500MHz frequency band.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a wide-band omnidirectional antenna for unmanned aerial vehicles, comprising a radio frequency cable, an antenna substrate, four first extended circuit boards and four second extended circuit boards, a first main circuit layer is provided on one side of the antenna substrate, and a second main circuit layer is provided on the other side of the antenna substrate, the antenna substrate is also provided with four first mounting parts and four second mounting parts, a part of the first main circuit layer is located in the first mounting part, and a part of the second main circuit layer is located in the second mounting part; each of the first mounting parts is installed with the first extended circuit board, and the first extended circuit board is electrically connected to the first main circuit layer; each of the second mounting parts is installed with the second extended circuit board, and the second extended circuit board is electrically connected to the second main circuit layer; the antenna substrate is also provided with a through hole, the inner core of the radio frequency cable passes through the through hole and is electrically connected to the first main circuit layer and the second main circuit layer respectively.

[0005] Furthermore, a first extension circuit layer connected to the first main circuit layer is also provided on one side of the antenna substrate where the second main circuit layer is provided.

[0006] Furthermore, a second extension circuit layer connected to the second main circuit layer is also provided on one side of the antenna substrate where the first main circuit layer is provided.

[0007] Furthermore, the first mounting portion and the second mounting portion are distributed alternately on the antenna substrate.

[0008] Furthermore, it also includes an N-head connector, and one end of the radio frequency cable away from the antenna substrate is electrically connected to the inner conductor of the N-head connector.

[0009] Furthermore, it also includes a glass fiber tube, the N-head connector is installed at one end of the glass fiber tube, and the radio frequency cable and the antenna substrate are both located in the glass fiber tube.

[0010] Furthermore, an end cap is provided at one end of the glass fiber tube away from the N-head connector.

[0011] The beneficial effects of the utility model are as follows: the wide-band omnidirectional antenna for drones provided by the utility model can effectively cover the 2000MHz-2500MHz frequency band, facilitate the change of the transmission frequency band, and avoid frequency band congestion; by adding a first extended circuit board and a second extended circuit board on the antenna substrate, and arranging and electrically connecting the first extended circuit board to the first main circuit layer, and the second extended circuit board to the second main circuit layer, the radiation area is increased, the bandwidth is improved, and the stable performance of the antenna performance is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an assembly diagram of a wide-band omnidirectional antenna for a drone according to Embodiment 1 of the utility model;

[0013] Figure 2 This is a side view of the internal structure of the wide-band omnidirectional antenna for drones according to the first embodiment of the utility model;

[0014] Figure 3 This is a top view of the internal structure of the wide-band omnidirectional antenna for drones according to the first embodiment of the utility model (after hiding the first expansion circuit board and the second expansion circuit board);

[0015] Figure 4 This is a bottom view of the antenna substrate of the first embodiment of the present utility model;

[0016] Figure 5 This is a return loss diagram of the wide-band omnidirectional antenna for drones in the first embodiment of the utility model in the frequency band of 2000MHz-2500MHz;

[0017] Figure 6 This is the directional diagram of the wide-band omnidirectional antenna for drones in the first embodiment of the utility model in the 2250 MHz frequency band.

[0018] Description of labels:

[0019] 1. Glass fiber tube; 11. N-head connector; 12. End cap; 2. RF cable; 3. Antenna substrate; 31. First main circuit layer; 32. Second main circuit layer; 33. Perforation; 34. First mounting portion; 35. Second mounting portion; 36. First extended circuit layer; 37. Second extended circuit layer; 4. First extended circuit board; 5. Second extended circuit board. DETAILED DESCRIPTION

[0020] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0021] Please refer to Figures 1 to 6 A wide-band omnidirectional antenna for an unmanned aerial vehicle comprises a radio frequency cable 2, an antenna substrate 3, four first extension circuit boards 4 and four second extension circuit boards 5, wherein a first main circuit layer 31 is provided on one side of the antenna substrate 3, and a second main circuit layer 32 is provided on the other side of the antenna substrate 3, and the antenna substrate 3 is also provided with four first mounting portions 34 and four second mounting portions 35, wherein a portion of the first main circuit layer 31 is located at the first mounting portion 34, and a portion of the second main circuit layer 32 is located at the second mounting portion 35; each of the first mounting portions 34 is provided with the first extension circuit board 4, and the first extension circuit board 4 is electrically connected to the first main circuit layer 31; each of the second mounting portions 35 is provided with the second extension circuit board 5, and the second extension circuit board 5 is electrically connected to the second main circuit layer 32; the antenna substrate 3 is also provided with a through hole 33, and the inner core of the radio frequency cable 2 passes through the through hole 33 and is electrically connected to the first main circuit layer 31 and the second main circuit layer 32 respectively.

[0022] From the above description, it can be seen that the beneficial effect of the utility model is that by adding a first extended circuit board 4 and a second extended circuit board 5 to the antenna substrate 3, and arranging and electrically connecting the first extended circuit board 4 to the first main circuit layer 31, and the second extended circuit board 5 to the second main circuit layer 32, the radiation area is increased, the bandwidth is improved, and the stable performance of the antenna performance is achieved.

[0023] Furthermore, a first extension circuit layer 36 connected to the first main circuit layer 31 is further provided on one side of the antenna substrate 3 where the second main circuit layer 32 is provided.

[0024] It can be seen from the above description that the first extension circuit layer 36 connected to the first main circuit layer 31 is provided on the antenna substrate 3, which further increases the radiation area and is conducive to further improving the antenna performance.

[0025] Furthermore, the antenna substrate 3 is provided with a second extension circuit layer 37 connected to the second main circuit layer 32 on one side of the antenna substrate 3 where the first main circuit layer 31 is provided.

[0026] It can be seen from the above description that the second extension circuit layer 37 connected to the second main circuit layer 32 is provided on the antenna substrate 3, which further increases the radiation area and is conducive to further improving the antenna performance.

[0027] Furthermore, the first mounting portion 34 and the second mounting portion 35 are alternately distributed on the antenna substrate 3 .

[0028] It can be seen from the above description that the relative position relationship between the first mounting portion 34 and the second mounting portion 35 can be set according to actual application requirements.

[0029] Furthermore, it also includes an N-head connector 11 , and one end of the RF cable 2 away from the antenna substrate 3 is electrically connected to the inner conductor of the N-head connector 11 .

[0030] It can be seen from the above description that the N-head connector 11 facilitates the electrical connection between the RF cable 2 and external devices.

[0031] Furthermore, it also includes a glass fiber tube 1 , the N-head connector 11 is installed at one end of the glass fiber tube 1 , and the radio frequency cable 2 and the antenna substrate 3 are both located in the glass fiber tube 1 .

[0032] It can be seen from the above description that the glass fiber tube 1 is convenient for protecting the radio frequency cable 2 and the antenna substrate 3.

[0033] Furthermore, an end cap 12 is provided at one end of the glass fiber tube 1 away from the N-head connector 11 .

[0034] It can be seen from the above description that the end cover 12 is convenient for sealing the glass fiber tube 1 .

[0035] Please refer to Figures 1 to 6, Embodiment 1 of the utility model is: a wide-band omnidirectional antenna for unmanned aerial vehicles, comprising a radio frequency cable 2, an antenna substrate 3, four first extension circuit boards 4 and four second extension circuit boards 5, one side of the antenna substrate 3 is provided with a first main circuit layer 31, the other side of the antenna substrate 3 is provided with a second main circuit layer 32, the antenna substrate 3 is also provided with four first mounting portions 34 and four second mounting portions 35, a part of the first main circuit layer 31 is located in the first mounting portion 34, a part of the second main circuit layer 32 is located in the second mounting portion 35; each of the first mounting portions 34 is installed with the first extension circuit board 4, and the first extension circuit board 4 is connected to the first main circuit layer 31. The antenna substrate 3 is also provided with a through hole 33, and the inner core of the RF cable 2 passes through the through hole 33 and is respectively electrically connected to the first main circuit layer 31 and the second main circuit layer 32; it can be understood that by adding a first extended circuit board 4 and a second extended circuit board 5 to the antenna substrate 3, and arranging and electrically connecting the first extended circuit board 4 to the first main circuit layer 31, and the second extended circuit board 5 to the second main circuit layer 32, the radiation area is increased, the bandwidth is improved, and the stable performance of the antenna performance is achieved.

[0036] Specifically, the first mounting portion 34 and the second mounting portion 35 are both protrusions extending outward from the side of the antenna substrate 3, and the first extension circuit board 4 and the second extension circuit board 5 are both provided with sockets mounted on the protrusions. The first extension circuit board 4 and the second extension circuit board 5 are both FPCs. The first extension circuit board 4 is welded to the first main circuit layer 31 of the first mounting portion 34, and the second extension circuit board 5 is welded to the second main circuit layer 32 of the second mounting portion 35.

[0037] Preferably, please combine Figure 3 and Figure 4 The antenna substrate 3 is provided with a first extended circuit layer 36 connected to the first main circuit layer 31 on one side of the second main circuit layer 32. The first extended circuit layer 36 connected to the first main circuit layer 31 is arranged on the antenna substrate 3, which further increases the radiation area and is conducive to further improving the antenna performance; further, the antenna substrate 3 is provided with a second extended circuit layer 37 connected to the second main circuit layer 32 on one side of the first main circuit layer 31. The second extended circuit layer 37 connected to the second main circuit layer 32 is arranged on the antenna substrate 3, which further increases the radiation area and is conducive to further improving the antenna performance.

[0038] In this embodiment, the first mounting portion 34 and the second mounting portion 35 are staggered on the antenna substrate 3, and the relative position relationship between the first mounting portion 34 and the second mounting portion 35 can be set according to actual application requirements; further, the wide-band omnidirectional antenna for unmanned aerial vehicle also includes an N-head connector 11 and a glass fiber tube 1, and the end of the RF cable 2 away from the antenna substrate 3 is electrically connected to the inner conductor of the N-head connector 11, and the N-head connector 11 is installed at one end of the glass fiber tube 1, and the RF cable 2 and the antenna substrate 3 are both located in the glass fiber tube 1; specifically, the end of the glass fiber tube 1 away from the N-head connector 11 is provided with an end cover 12, and the end cover 12 facilitates sealing of the glass fiber tube 1.

[0039] Please combine Figure 5 and Figure 6 , Figure 5 This is the return loss diagram of the wide-band omnidirectional antenna used in this drone in the 2000MHz-2500MHz frequency band. Figure 6 This is the directional diagram of the wide-band omnidirectional antenna for this UAV in the 2250MHz frequency band. It is not difficult to see that the wide-band omnidirectional antenna for this UAV can stably exert its antenna performance in the 2000MHz-2500MHz frequency band and has good omnidirectionality.

[0040] In summary, the wide-band omnidirectional antenna for drones provided by the utility model can stably exert its antenna performance in the 2000MHz-2500MHz frequency band and has good omnidirectionality.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A wide-band omnidirectional antenna for drones, characterized in that: It includes a radio frequency cable, an antenna substrate, four first extension circuit boards and four second extension circuit boards, wherein a first main circuit layer is provided on one side of the antenna substrate, and a second main circuit layer is provided on the other side of the antenna substrate, and the antenna substrate is also provided with four first mounting parts and four second mounting parts, a part of the first main circuit layer is located in the first mounting part, and a part of the second main circuit layer is located in the second mounting part; each of the first mounting parts is installed with the first extension circuit board, and the first extension circuit board is electrically connected to the first main circuit layer; each of the second mounting parts is installed with the second extension circuit board, and the second extension circuit board is electrically connected to the second main circuit layer; the antenna substrate is also provided with a through hole, and the inner core of the radio frequency cable passes through the through hole and is electrically connected to the first main circuit layer and the second main circuit layer respectively.

2. The wide-band omnidirectional antenna for drone according to claim 1, characterized in that: The side of the antenna substrate where the second main circuit layer is provided also includes a first extension circuit layer connected to the first main circuit layer.

3. The wide-band omnidirectional antenna for drone according to claim 1, characterized in that: The antenna substrate is provided with a second extension circuit layer connected to the second main circuit layer on one side thereof.

4. The wide-band omnidirectional antenna for drone according to claim 1, characterized in that: The first mounting portion and the second mounting portion are alternately distributed on the antenna substrate.

5. The wide-band omnidirectional antenna for drone according to claim 1, characterized in that: It also includes an N-head connector, and one end of the radio frequency cable away from the antenna substrate is electrically connected to the inner conductor of the N-head connector.

6. The wide-band omnidirectional antenna for drone according to claim 5, characterized in that: It also includes a glass fiber tube, the N-head connector is installed at one end of the glass fiber tube, and the radio frequency cable and the antenna substrate are both located in the glass fiber tube.

7. The wide-band omnidirectional antenna for drone according to claim 6, characterized in that: An end cap is provided at one end of the glass fiber tube away from the N-head connector.

Images