Anti-interference multi-band omnidirectional glass fiber reinforced plastic antenna for unmanned aerial vehicle

Abstract

The anti-interference multi-band omnidirectional glass fiber reinforced plastic antenna for the unmanned aerial vehicle is characterized by comprising a glass fiber tube and a coaxial line assembly arranged in the glass fiber tube in a penetrating mode, one end of the glass fiber tube is provided with an end cover, and the other end of the glass fiber tube is provided with an N-head assembly; the coaxial line assembly comprises a central axis, a PCB, an inner copper tube and an outer copper tube, the PCB is provided with a feed branch knot, a first radiation branch knot, a second radiation branch knot and a third radiation branch knot, and the first radiation branch knot, the second radiation branch knot and the third radiation branch knot are respectively and vertically connected with the feed branch knot; one end of the central axis is welded with the feed branch, and the other end is connected with the N-head assembly; the inner copper pipe is sleeved on the central axis, and the outer copper pipe is sleeved on the inner copper pipe; the anti-interference multi-frequency-band omnidirectional glass fiber reinforced plastic antenna for the unmanned aerial vehicle can realize rapid frequency hopping among multiple frequency bands, and is high in anti-interference performance and good in omnidirectional performance.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular to an anti-interference multi-band omnidirectional fiberglass 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. While UAV technology is developing, the countermeasures of UAVs are also developing. In order to avoid the attack of countermeasures, the antenna of the UAV is required to be able to achieve fast frequency hopping between multiple frequency bands. Therefore, it is necessary to develop an anti-interference multi-band omnidirectional fiberglass antenna for UAVs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an anti-interference multi-band omnidirectional fiberglass antenna for unmanned aerial vehicles.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an anti-interference multi-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a fiberglass tube and a coaxial line assembly inserted in the fiberglass tube, one end of the fiberglass tube is provided with an end cap, and the other end is provided with an N-head assembly; the coaxial line assembly comprises a central axis, a PCB board, an inner copper tube and an outer copper tube, the PCB board is provided with a feeding branch, a first radiation branch, a second radiation branch and a third radiation branch, the first radiation branch, the second radiation branch and the third radiation branch are respectively vertically connected to the feeding branch; one end of the central axis is welded to the feeding branch, and the other end is connected to the N-head assembly; the inner copper tube is sleeved on the central axis, and the outer copper tube is sleeved on the inner copper tube.

[0005] Furthermore, it also includes a copper cap, which is sleeved on the central axis. The copper cap is provided with a first mounting portion and a second mounting portion. The inner copper tube is mounted on the first mounting portion, and the outer copper tube is mounted on the second mounting portion.

[0006] Furthermore, the length of the outer copper tube is 52 mm, and the inner diameter of the outer copper tube is 9.6 mm.

[0007] Furthermore, the length of the inner copper tube is 76 mm, and the outer diameter of the inner copper tube is 6.8 mm.

[0008] Furthermore, the length of the feeding branch is 22.6 mm, the length of the first radiation branch and the length of the third radiation branch are both 37.7 mm, and the length of the second radiation branch is 75.2 mm.

[0009] Furthermore, a first foam is sleeved on the central axis, and the first foam is in contact with the inner wall of the inner copper tube.

[0010] Furthermore, a second foam is sleeved on the outer copper tube.

[0011] Furthermore, the end cap and the N-head assembly are respectively connected to the end of the glass fiber tube through AB glue.

[0012] The beneficial effect of the utility model is that the anti-interference multi-band omnidirectional fiberglass antenna for drones provided by the utility model is through arranging the first radiating branch, the second radiating branch and the third radiating branch vertically connected to the feeding branch on the PCB board, the central axis is welded to the feeding branch, and the inner copper tube and the outer copper tube are sequentially sleeved on the central axis, so that the anti-interference multi-band omnidirectional fiberglass antenna for drones can realize fast frequency hopping between multiple frequency bands, and has strong anti-interference performance and good omnidirectionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an anti-interference multi-band omnidirectional fiberglass antenna for a UAV according to the first embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the anti-interference multi-band omnidirectional fiberglass antenna for drones according to the first embodiment of the utility model (behind the fiberglass tube);

[0015] Figure 3 S is an anti-interference multi-band omnidirectional fiberglass antenna for drones according to the first embodiment of the utility model;

[0016] Figure 4 This is the directional diagram of the anti-interference multi-band omnidirectional fiberglass antenna for drones of the first embodiment of the utility model when the operating frequency is 815 MHZ;

[0017] Figure 5 This is the directional diagram of the anti-interference multi-band omnidirectional fiberglass antenna for drones of the first embodiment of the utility model when the operating frequency is 1440MHZ;

[0018] Figure 6 This is the directional diagram of the anti-interference multi-band omnidirectional fiberglass antenna for drones of Example 1 of the utility model when the operating frequency is 2440 MHZ.

[0019] Description of labels:

[0020] 1. Glass fiber tube; 11. End cap; 2. N-head assembly; 3. Center axis; 4. PCB board; 41. Feed branch; 42. First radiation branch; 43. Second radiation branch; 44. Third radiation branch; 5. Inner copper tube; 6. Outer copper tube; 7. Copper cap; 8. First foam; 9. Second foam. DETAILED DESCRIPTION

[0021] 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.

[0022] Please refer to Figures 1 to 6 , an anti-interference multi-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a glass fiber tube 1 and a coaxial line assembly inserted in the glass fiber tube 1, wherein one end of the glass fiber tube 1 is provided with an end cap 11, and the other end is provided with an N-head assembly 2; the coaxial line assembly comprises a central axis 3, a PCB board 4, an inner copper tube 5 and an outer copper tube 6, and the PCB board 4 is provided with a feeding branch 41, a first radiation branch 42, a second radiation branch 43 and a third radiation branch 44, and the first radiation branch 42, the second radiation branch 43 and the third radiation branch 44 are respectively vertically connected to the feeding branch 41; one end of the central axis 3 is welded to the feeding branch 41, and the other end is connected to the N-head assembly 2; the inner copper tube 5 is sleeved on the central axis 3, and the outer copper tube 6 is sleeved on the inner copper tube 5.

[0023] From the above description, it can be seen that the beneficial effect of the utility model is that: by arranging a first radiating branch 42, a second radiating branch 43 and a third radiating branch 44 vertically connected to the feeding branch 41 on the PCB board 4, the central axis 3 is welded to the feeding branch 41, and the inner copper tube 5 and the outer copper tube 6 are sequentially sleeved on the central axis 3, so that the anti-interference multi-band omnidirectional fiberglass antenna for the drone can achieve fast frequency hopping between multiple frequency bands, and has strong anti-interference performance and good omnidirectionality.

[0024] Furthermore, it also includes a copper cap 7, which is sleeved on the central axis 3, and the copper cap 7 is provided with a first mounting portion and a second mounting portion, the inner copper tube 5 is mounted on the first mounting portion, and the outer copper tube 6 is mounted on the second mounting portion.

[0025] From the above description, it can be seen that the copper cap 7 facilitates the installation of the inner copper tube 5 and the outer copper tube 6, ensuring that the central axis 3, the inner copper tube 5 and the outer copper tube 6 remain coaxial, thereby improving the stability of the antenna performance.

[0026] Furthermore, the length of the outer copper tube 6 is 52 mm, and the inner diameter of the outer copper tube 6 is 9.6 mm.

[0027] Furthermore, the length of the inner copper tube 5 is 76 mm, and the outer diameter of the inner copper tube 5 is 6.8 mm.

[0028] It can be seen from the above description that the sizes of the inner copper tube 5 and the outer copper tube 6 can be set according to actual application requirements.

[0029] Furthermore, the length of the feeding branch 41 is 22.6 mm, the length of the first radiation branch 42 and the length of the third radiation branch 44 are both 37.7 mm, and the length of the second radiation branch 43 is 75.2 mm.

[0030] Furthermore, a first foam 8 is sleeved on the central axis 3 , and the first foam 8 is in contact with the inner wall of the inner copper tube 5 .

[0031] Furthermore, a second foam 9 is sleeved on the outer copper tube 6 .

[0032] Furthermore, the end cover 11 and the N-head assembly 2 are respectively connected to the end of the glass fiber tube 1 through AB glue.

[0033] Please refer to Figures 1 to 6 , Embodiment 1 of the utility model is: an anti-interference multi-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a fiberglass tube 1 and a coaxial line assembly inserted in the fiberglass tube 1, wherein one end of the fiberglass tube 1 is provided with an end cap 11, and the other end is provided with an N-head assembly 2; the coaxial line assembly comprises a central axis 3, a PCB board 4, an inner copper tube 5 and an outer copper tube 6, and the PCB board 4 is provided with a feeding branch 41, a first radiation branch 42, a second radiation branch 43 and a third radiation branch 44, and the first radiation branch 42, the second radiation branch 43 and the third radiation branch 44 are respectively connected vertically to the feeding branch 41; the central One end of the central axis 3 is welded to the feeding branch 41, and the other end is connected to the N-head assembly 2; the inner copper tube 5 is sleeved on the central axis 3, and the outer copper tube 6 is sleeved on the inner copper tube 5; by arranging a first radiation branch 42, a second radiation branch 43 and a third radiation branch 44 vertically connected to the feeding branch 41 on the PCB board 4, the central axis 3 is welded to the feeding branch 41, and the inner copper tube 5 and the outer copper tube 6 are sleeved on the central axis 3 in sequence, so that the anti-interference multi-band omnidirectional fiberglass antenna for the drone can achieve fast frequency hopping between multiple frequency bands, and has strong anti-interference performance and good omnidirectionality.

[0034] Preferably, the anti-interference multi-band omnidirectional fiberglass antenna for the UAV also includes a copper cap 7, which is sleeved on the central axis 3. The copper cap 7 is provided with a first mounting portion and a second mounting portion. The inner copper tube 5 is mounted on the first mounting portion, and the outer copper tube 6 is mounted on the second mounting portion. The copper cap 7 facilitates the installation of the inner copper tube 5 and the outer copper tube 6, thereby ensuring that the central axis 3, the inner copper tube 5 and the outer copper tube 6 remain coaxial, thereby improving the stability of the antenna performance.

[0035] Specifically in this embodiment, the length of the outer copper tube 6 is 52 mm, the inner diameter of the outer copper tube 6 is 9.6 mm, the length of the inner copper tube 5 is 76 mm, and the outer diameter of the inner copper tube 5 is 6.8 mm; the length of the feeding branch 41 is 22.6 mm, the length of the first radiation branch 42 and the length of the third radiation branch 44 are both 37.7 mm, and the length of the second radiation branch 43 is 75.2 mm; more specifically, a first foam 8 is sleeved on the central axis 3, and the first foam 8 is in conflict with the inner side wall of the inner copper tube 5, and a second foam 9 is sleeved on the outer copper tube 6, and the end cover 11 and the N-head assembly 2 are respectively connected to the end of the glass fiber tube 1 through AB glue.

[0036] For details, please combine Figures 3 to 6 It is not difficult to see that the anti-interference multi-band omnidirectional fiberglass antenna for drones provided by the utility model can achieve fast frequency hopping between multiple frequency bands, and has strong anti-interference performance and good omnidirectionality; among them, Figure 3 Refer to the S figure of the anti-interference multi-band omnidirectional fiberglass antenna for UAV;

[0037] Figure 4 This is the directional diagram when the operating frequency is 815MHZ; Figure 5 This is the directional diagram when the operating frequency is 1440MHZ; Figure 6 This is the directional diagram when the operating frequency is 2440MHZ.

[0038] To sum up, the anti-interference multi-band omnidirectional fiberglass antenna for drones provided by the utility model is configured with a first radiating branch, a second radiating branch and a third radiating branch vertically connected to the feeding branch on a PCB board, the central axis is welded to the feeding branch, and an inner copper tube and an outer copper tube are sequentially sleeved on the central axis, so that the anti-interference multi-band omnidirectional fiberglass antenna for drones can achieve fast frequency hopping between multiple frequency bands, and has strong anti-interference performance and good omnidirectionality.

[0039] 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. An anti-interference multi-band omnidirectional fiberglass antenna for drones, characterized in that: It includes a glass fiber tube and a coaxial line component inserted in the glass fiber tube, wherein one end of the glass fiber tube is provided with an end cap, and the other end is provided with an N-head component; the coaxial line component includes a central axis, a PCB board, an inner copper tube and an outer copper tube, and the PCB board is provided with a feeding branch, a first radiation branch, a second radiation branch and a third radiation branch, and the first radiation branch, the second radiation branch and the third radiation branch are respectively vertically connected to the feeding branch; one end of the central axis is welded to the feeding branch, and the other end is connected to the N-head component; the inner copper tube is sleeved on the central axis, and the outer copper tube is sleeved on the inner copper tube.

2. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: It also includes a copper cap, which is sleeved on the central axis. The copper cap is provided with a first mounting portion and a second mounting portion. The inner copper tube is mounted on the first mounting portion, and the outer copper tube is mounted on the second mounting portion.

3. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The length of the outer copper tube is 52 mm, and the inner diameter of the outer copper tube is 9.6 mm.

4. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The length of the inner copper tube is 76 mm, and the outer diameter of the inner copper tube is 6.8 mm.

5. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The length of the feeding branch is 22.6 mm, the length of the first radiation branch and the length of the third radiation branch are both 37.7 mm, and the length of the second radiation branch is 75.2 mm.

6. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: A first foam is sleeved on the central axis, and the first foam is in contact with the inner wall of the inner copper tube.

7. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The outer copper tube is sleeved with a second foam.

8. The anti-interference multi-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The end cap and the N-head assembly are respectively connected to the end of the glass fiber tube through AB glue.

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