Wide-band omnidirectional glass fiber reinforced plastic antenna for unmanned aerial vehicle

Abstract

The utility model discloses a wide frequency band omnidirectional glass fiber reinforced plastic antenna for an unmanned aerial vehicle, which comprises a glass fiber tube, an end cover, a coaxial line assembly and an N-head connector, and is characterized in that the coaxial line assembly comprises a first radio frequency coaxial cable, a second radio frequency coaxial cable, a plastic connecting piece and two copper tubes; the first radio frequency coaxial cable is connected with the second radio frequency coaxial cable, the first radio frequency coaxial cable is connected with the N-head connector, and the second radio frequency coaxial cable is connected with the end cover; the first radio-frequency coaxial cable and the second radio-frequency coaxial cable are respectively sleeved with a copper pipe, the plastic connecting piece is sleeved at the joint of the first radio-frequency coaxial cable and the second radio-frequency coaxial cable, and the two ends of the plastic connecting piece are respectively provided with a copper pipe; the lengths of the two copper pipes are both 120 mm + / -0.2 mm, and the distance between the two copper pipes is 1.5 mm; the wide-frequency-band omnidirectional glass fiber reinforced plastic antenna for the unmanned aerial vehicle has the characteristics of high gain, long transmission distance and wide radiation angle.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a wide-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. 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 congestion is prone to occur in the 580MHz-700MHz 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 fiberglass antenna for unmanned aerial vehicles to solve the problem of frequency congestion that is prone to occur in the 580MHz-700MHz frequency band.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a wide-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a glass fiber tube, an end cap, a coaxial line assembly and an N-head connector, wherein the end cap is installed at one end of the glass fiber tube, the N-head connector is installed at the other end of the glass fiber tube, and the coaxial line assembly is located in the glass fiber tube; the coaxial line assembly comprises a first radio frequency coaxial cable, a second radio frequency coaxial cable, a plastic connector and two copper tubes; one end of the first radio frequency coaxial cable is connected to one end of the second radio frequency coaxial cable, the end of the first radio frequency coaxial cable away from the second radio frequency coaxial cable is connected to the N-head connector, and the end of the second radio frequency coaxial cable away from the first radio frequency coaxial cable is connected to the end cap; the copper tubes are respectively sleeved on the first radio frequency coaxial cable and the second radio frequency coaxial cable, the plastic connector is sleeved on the connection between the first radio frequency coaxial cable and the second radio frequency coaxial cable, and the copper tubes are respectively installed on both ends of the plastic connector; the lengths of the two copper tubes are both 120 mm±0.2 mm, and the spacing between the two copper tubes is 1.5 mm.

[0005] Furthermore, high temperature adhesive tape is provided on the connection between the two copper tubes and the plastic connector.

[0006] Furthermore, a first foam is sleeved on the outer wall of the copper tube.

[0007] Furthermore, the first RF coaxial cable and the second RF coaxial cable are respectively sleeved with a second foam that contacts the inner wall of the copper tube.

[0008] Furthermore, a nut is provided on the inner side wall of the copper tube, and the nut has an internal thread. The opposite side walls of the plastic connector are respectively provided with external threads matching the internal thread.

[0009] Furthermore, the distance between the end faces of the end cover and the N-head connector facing away from each other is 290 mm.

[0010] The beneficial effect of the utility model is that the wide-band omnidirectional fiberglass antenna for drones provided by the utility model can meet the requirements of long-distance image transmission in the 580MHz-700MHz frequency band, and copper tubes with a length of 120mm±0.2mm are respectively arranged on the first RF coaxial cable and the second RF coaxial cable, and the spacing between the copper tubes is set to 1.5mm, which improves the antenna working bandwidth and is conducive to improving the antenna performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a wide-band omnidirectional fiberglass antenna for a UAV according to the first embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the wide-band omnidirectional fiberglass antenna for drones according to the first embodiment of the utility model (behind the fiberglass tube);

[0013] Figure 3 This is a structural schematic diagram of a plastic connector according to the first embodiment of the present utility model;

[0014] Figure 4 This is a schematic structural diagram of a nut according to Embodiment 1 of the present utility model;

[0015] Figure 5 S is a wide-band omnidirectional fiberglass antenna for drones according to the first embodiment of the present utility model;

[0016] Figure 6 This is the directional diagram of the wide-band omnidirectional fiberglass antenna for drones of Example 1 of the utility model at an operating frequency of 630 MHZ.

[0017] Description of labels:

[0018] 1. Glass fiber tube; 11. End cap; 2. N-head connector; 3. First RF coaxial cable; 4. Second RF coaxial cable; 5. Copper tube; 51. Nut; 6. Plastic connector; 7. High temperature sticker; 8. First foam; 9. Second foam. DETAILED DESCRIPTION

[0019] 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.

[0020] Please refer to Figures 1 to 6 A wide-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a glass fiber tube 1, an end cap 11, a coaxial line assembly and an N-head connector 2, wherein the end cap 11 is installed at one end of the glass fiber tube 1, the N-head connector 2 is installed at the other end of the glass fiber tube 1, and the coaxial line assembly is located in the glass fiber tube 1; the coaxial line assembly comprises a first radio frequency coaxial cable 3, a second radio frequency coaxial cable 4, a plastic connector 6 and two copper tubes 5; one end of the first radio frequency coaxial cable 3 is connected to one end of the second radio frequency coaxial cable 4, and the first radio frequency coaxial cable 3 is away from the second radio frequency coaxial cable 4. One end of the RF coaxial cable 4 is connected to the N-head connector 2, and the end of the second RF coaxial cable 4 away from the first RF coaxial cable 3 is connected to the end cover 11; the first RF coaxial cable 3 and the second RF coaxial cable 4 are respectively sleeved with the copper tube 5, the plastic connector 6 is sleeved at the connection between the first RF coaxial cable 3 and the second RF coaxial cable 4, and the copper tubes 5 are respectively installed at both ends of the plastic connector 6; the lengths of the two copper tubes 5 are both 120mm±0.2mm, and the spacing between the two copper tubes 5 is 1.5mm.

[0021] From the above description, it can be seen that the beneficial effect of the utility model is that: a copper tube 5 with a length of 120mm±0.2mm is respectively set on the first RF coaxial cable 3 and the second RF coaxial cable 4, and the spacing between the copper tubes 5 is set to 1.5mm, which improves the antenna working bandwidth and is beneficial to the improvement of antenna performance.

[0022] Furthermore, the connection between the two copper tubes 5 and the plastic connector 6 is covered with high-temperature adhesive tape.

[0023] It can be seen from the above description that the high temperature sticker 7 can ensure that the antenna performance is effectively exerted.

[0024] Furthermore, a first foam 8 is sleeved on the outer wall of the copper tube 5 .

[0025] It can be seen from the above description that the first foam 8 can improve the stability of the copper tube 5 .

[0026] Furthermore, the first RF coaxial cable 3 and the second RF coaxial cable 4 are respectively sleeved with second foam 9 which contacts the inner wall of the copper tube 5 .

[0027] It can be seen from the above description that the second foam 9 can ensure the coaxiality between the first RF coaxial cable 3 and the second RF coaxial cable 4 and the copper tube 5 .

[0028] Furthermore, a nut 51 is provided on the inner side wall of the copper tube 5 , and the nut 51 has an internal thread. The opposite side walls of the plastic connector 6 are respectively provided with external threads matching the internal thread.

[0029] It can be seen from the above description that the nut 51 facilitates the installation of the copper tube 5 and the plastic connector 6 .

[0030] Furthermore, the distance between the end faces of the end cover 11 and the N-head connector 2 which are opposite to each other is 290 mm.

[0031] Please refer to Figures 1 to 6 Embodiment 1 of the utility model is: a wide-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a fiberglass tube 1, an end cap 11, a coaxial line assembly and an N-head connector 2, wherein the end cap 11 is installed at one end of the fiberglass tube 1, and the N-head connector 2 is installed at the other end of the fiberglass tube 1, and the spacing between the end faces of the end cap 11 and the N-head connector 2 that are opposite to each other is 290 mm, that is, the overall length of the wide-band omnidirectional fiberglass antenna for unmanned aerial vehicles in this embodiment is 290 mm; the coaxial line assembly is located in the fiberglass tube 1; the coaxial line assembly comprises a first RF coaxial cable 3, a second RF coaxial cable 4, a plastic connector 6 and two copper tubes 5; one end of the first RF coaxial cable 3 is connected to one end of the second RF coaxial cable 4, and the first RF coaxial cable 3 is away from the second RF coaxial cable One end of the cable 4 is connected to the N-head connector 2, and the end of the second RF coaxial cable 4 away from the first RF coaxial cable 3 is connected to the end cover 11; the copper tube 5 is respectively sleeved on the first RF coaxial cable 3 and the second RF coaxial cable 4, and the plastic connector 6 is sleeved at the connection between the first RF coaxial cable 3 and the second RF coaxial cable 4, and the copper tube 5 is respectively installed at both ends of the plastic connector 6; the lengths of the two copper tubes 5 are both 120mm±0.2mm, and the spacing between the two copper tubes 5 is 1.5mm; it can be understood that copper tubes 5 with a length of 120mm±0.2mm are respectively set on the first RF coaxial cable 3 and the second RF coaxial cable 4, and the spacing between the copper tubes 5 is set to 1.5mm, which improves the working bandwidth of the antenna and is beneficial to the improvement of the antenna performance.

[0032] Preferably, high-temperature adhesive tape is sleeved at the connection between the two copper tubes 5 and the plastic connector 6, and the high-temperature adhesive tape 7 can ensure that the antenna performance is effectively exerted; specifically, a first foam 8 is sleeved on the outer wall of the copper tube 5, and the first foam 8 is used to contact the inner wall of the glass fiber tube 1, and the first RF coaxial cable 3 and the second RF coaxial cable 4 are respectively sleeved with a second foam 9 that contacts the inner wall of the copper tube 5, and the second foam 9 can ensure the coaxiality between the first RF coaxial cable 3 and the second RF coaxial cable 4 and the copper tube 5.

[0033] In this embodiment, a nut 51 is provided on the inner wall of the copper tube 5, and the nut 51 has an internal thread. The opposite side walls of the plastic connector 6 are respectively provided with external threads matching the internal thread. The nut 51 facilitates the installation of the copper tube 5 and the plastic connector 6.

[0034] Please combine Figure 5 and Figure 6 It is not difficult to see that the wide-band omnidirectional fiberglass antenna for drones in this embodiment has the characteristics of high gain, long transmission distance and wide radiation angle, among which, Figure 5 Refer to the S figure of the wide-band omnidirectional fiberglass antenna for this UAV; Figure 6 This is the directional diagram of the wide-band omnidirectional fiberglass antenna used in this UAV at the operating frequency of 630MHZ.

[0035] In summary, the wide-band omnidirectional fiberglass antenna for drones provided by the utility model can meet the requirements of long-distance image transmission in the 580MHz-700MHz frequency band. Copper tubes with a length of 120mm±0.2mm are respectively arranged on the first RF coaxial cable and the second RF coaxial cable, and the spacing between the copper tubes is set to 1.5mm, which improves the working bandwidth of the antenna and is conducive to improving the antenna performance.

[0036] 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 fiberglass antenna for drones, characterized in that: It includes a glass fiber tube, an end cover, a coaxial line assembly and an N-head connector, the end cover is installed at one end of the glass fiber tube, the N-head connector is installed at the other end of the glass fiber tube, and the coaxial line assembly is located in the glass fiber tube; the coaxial line assembly includes a first RF coaxial cable, a second RF coaxial cable, a plastic connector and two copper tubes; one end of the first RF coaxial cable is connected to one end of the second RF coaxial cable, the end of the first RF coaxial cable away from the second RF coaxial cable is connected to the N-head connector, and the end of the second RF coaxial cable away from the first RF coaxial cable is connected to the end cover; the copper tubes are respectively sleeved on the first RF coaxial cable and the second RF coaxial cable, the plastic connector is sleeved on the connection between the first RF coaxial cable and the second RF coaxial cable, and the copper tubes are respectively installed on both ends of the plastic connector; the lengths of the two copper tubes are both 120mm±0.2mm, and the spacing between the two copper tubes is 1.5mm.

2. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The connection between the two copper tubes and the plastic connector is covered with high-temperature adhesive tape.

3. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The outer side wall of the copper tube is sleeved with a first foam.

4. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The first radio frequency coaxial cable and the second radio frequency coaxial cable are respectively sleeved with second foams that abut against the inner wall of the copper tube.

5. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The inner wall of the copper tube is provided with a nut having an internal thread, and the opposite side walls of the plastic connector are respectively provided with external threads matching the internal thread.

6. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The distance between the end faces of the end cover and the N-head connector facing away from each other is 290 mm.

Images