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, the end cover is arranged at one end of the glass fiber tube, the N-head connector is arranged at the other end of the glass fiber tube, and the coaxial line assembly is positioned in the glass fiber tube; the coaxial line assembly comprises a radio frequency coaxial cable, a copper pipe and a PCB, one end of the radio frequency coaxial cable is welded to the PCB, the other end of the radio frequency coaxial cable is installed on the N-head connector, a copper cap is arranged on the inner side wall of the copper pipe, and the copper cap is connected to the radio frequency coaxial cable in a sleeving mode; the length of the radio frequency coaxial cable is 110mm + / -1.0 mm, the length of the copper tube is 33mm, the material of the glass fiber tube is a glass fiber reinforced plastic material, and the length of the glass fiber tube is 150mm + / -1.0 mm; the wide-frequency-band omnidirectional glass fiber reinforced plastic antenna for the unmanned aerial vehicle provided by the utility model can meet the requirement of long-distance image transmission under the frequency band of 1800 MHz to 2000 MHz.

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 1800MHz-2000MHz 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 1800MHz-2000MHz 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 fiberglass tube, an end cover, a coaxial line assembly and an N-head connector, the end cover is installed at one end of the fiberglass tube, the N-head connector is installed at the other end of the fiberglass tube, and the coaxial line assembly is located in the fiberglass tube; the coaxial line assembly comprises a radio frequency coaxial cable, a copper tube and a PCB board, one end of the radio frequency coaxial cable is welded to the PCB board, the other end of the radio frequency coaxial cable is installed at the N-head connector, a copper cap is provided on the inner side wall of the copper tube, and the copper cap is sleeved on the radio frequency coaxial cable; the length of the radio frequency coaxial cable is 110mm±1.0mm, the length of the copper tube is 33mm, the material of the fiberglass tube is fiberglass material, and the length of the fiberglass tube is 150mm±1.0mm.

[0005] Furthermore, a first foam is sleeved on the outer wall of the copper tube.

[0006] Furthermore, the radio frequency coaxial cable is sleeved with a second foam that contacts the inner wall of the copper tube.

[0007] Furthermore, the radio frequency coaxial cable includes an inner core, an inner insulating layer, a welding layer and an outer insulating layer connected in sequence from the inside to the outside, the opposite ends of the inner core are exposed to the inner insulating layer, the opposite ends of the inner insulating layer are exposed to the welding layer, and the opposite ends of the welding layer are exposed to the outer insulating layer; one end of the inner core is used for welding to the PCB board, and the other end of the inner core is used for connecting to the inner conductor of the N-head connector; one end of the welding layer is used for welding to the copper cap, and the other end of the welding layer is used for welding to the N-head connector.

[0008] Furthermore, the copper cap is provided with a sleeve through hole, and one end of the welding layer is welded in the sleeve through hole.

[0009] Furthermore, the outer side wall of the copper cap is provided with a mounting notch for connecting with the inner side wall of the copper tube.

[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 1800MHz-2000MHz frequency band, and a glass fiber tube with a length of 150mm±1.0mm is set to sleeve the coaxial line component, and a radio frequency coaxial cable with a length of 110mm±1.0mm is used to connect the N-head connector and the PCB board, and a copper tube with a length of 33mm is sleeved on the radio frequency coaxial cable, so that the antenna can stably perform long-distance image transmission in the 1800MHz-2000MHz frequency band, thereby improving the antenna working bandwidth and facilitating the improvement of antenna performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an assembly diagram of a wide-band omnidirectional fiberglass antenna for a drone according to Embodiment 1 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 (after hiding the fiberglass tube and the end cover);

[0013] Figure 3 This is a schematic structural diagram of a radio frequency coaxial cable according to Embodiment 1 of the present utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the copper cap of the first embodiment of the utility model;

[0015] Figure 5 This is a return loss diagram of the wide-band omnidirectional fiberglass antenna for drones in the first embodiment of the utility model in the frequency band of 1800MHz-2000MHz;

[0016] Figure 6The directional diagram of the wide-band omnidirectional fiberglass antenna for drones of the first embodiment of the utility model at an operating frequency of 1800 MHZ;

[0017] Figure 7 The directional diagram of the wide-band omnidirectional fiberglass antenna for drones of the first embodiment of the utility model at an operating frequency of 1900 MHZ;

[0018] Figure 8 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 2000 MHZ.

[0019] Description of labels:

[0020] 1. Glass fiber tube; 11. N-head connector; 12. End cap; 2. RF coaxial cable; 21. Inner core; 22. Inner insulation layer; 23. Welding layer; 24. Outer insulation layer; 3. Copper tube; 4. Copper cap; 41. Socketing hole; 42. Installation notch; 5. First foam; 6. 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 8 A wide-band omnidirectional fiberglass antenna for unmanned aerial vehicles comprises a fiberglass tube 1, an end cap 12, a coaxial line assembly and an N-head connector 11, wherein the end cap 12 is mounted on one end of the fiberglass tube 1, the N-head connector 11 is mounted on the other end of the fiberglass tube 1, and the coaxial line assembly is located in the fiberglass tube 1; the coaxial line assembly comprises a radio frequency coaxial cable 2, a copper tube 3 and a PCB board, one end of the radio frequency coaxial cable 2 is welded to the PCB board, the other end of the radio frequency coaxial cable 2 is mounted on the N-head connector 11, a copper cap 4 is provided on the inner side wall of the copper tube 3, and the copper cap 4 is sleeved on the radio frequency coaxial cable 2; the length of the radio frequency coaxial cable 2 is 110 mm ± 1.0 mm, the length of the copper tube 3 is 33 mm, the material of the fiberglass tube 1 is fiberglass material, and the length of the fiberglass tube 1 is 150 mm ± 1.0 mm.

[0023] From the above description, it can be seen that the beneficial effects of the utility model are: a glass fiber tube 1 with a length of 150mm±1.0mm is set to socket the coaxial line assembly, and a radio frequency coaxial cable 2 with a length of 110mm±1.0mm is used to connect the N-head connector 11 and the PCB board, and a copper tube 3 with a length of 33mm is socketed on the radio frequency coaxial cable 2, so that the antenna can stably perform long-distance image transmission in the 1800MHz-2000MHz frequency band, thereby improving the antenna working bandwidth and facilitating the improvement of antenna performance.

[0024] Furthermore, a first foam 5 is sleeved on the outer wall of the copper tube 3 .

[0025] It can be seen from the above description that the first foam 5 can improve the stability of the copper tube 3 .

[0026] Furthermore, the RF coaxial cable 2 is sleeved with a second foam 6 which contacts the inner wall of the copper tube 3 .

[0027] It can be seen from the above description that the second foam 6 can ensure the coaxiality between the RF coaxial cable 2 and the copper tube 3 .

[0028] Furthermore, the RF coaxial cable 2 includes an inner core 21, an inner insulating layer 22, a welding layer 23 and an outer insulating layer 24 which are connected in sequence from the inside to the outside, the opposite ends of the inner core 21 are exposed to the inner insulating layer 22, the opposite ends of the inner insulating layer 22 are exposed to the welding layer 23, and the opposite ends of the welding layer 23 are exposed to the outer insulating layer 24; one end of the inner core 21 is used for welding to the PCB board, and the other end of the inner core 21 is used for connecting to the inner conductor of the N-head connector 11; one end of the welding layer 23 is used for welding to the copper cap 4, and the other end of the welding layer 23 is used for welding to the N-head connector 11.

[0029] It can be seen from the above description that the RF coaxial cable 2 has a simple structure and can simultaneously realize the connection between the copper tube 3 and the N-head connector 11 and between the PCB board and the inner conductor of the N-head connector 11 .

[0030] Furthermore, the copper cap 4 is provided with a sleeve through hole 41 , and one end of the welding layer 23 is welded in the sleeve through hole 41 .

[0031] It can be seen from the above description that the sleeve through hole 41 is convenient for welding with the welding layer 23 .

[0032] Furthermore, the outer side wall of the copper cap 4 is provided with a mounting notch 42 for connecting with the inner side wall of the copper tube 3 .

[0033] Please refer to Figures 1 to 8The first embodiment of the utility model is: a wide-band omnidirectional fiberglass antenna for unmanned aerial vehicles, comprising a glass fiber tube 1, an end cover 12, a coaxial line assembly and an N-head connector 11, wherein the end cover 12 is installed at one end of the glass fiber tube 1, the N-head connector 11 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 radio frequency coaxial cable 2, a copper tube 3 and a PCB board, one end of the radio frequency coaxial cable 2 is welded to the PCB board, the other end of the radio frequency coaxial cable 2 is installed at the N-head connector 11, and the inner side wall of the copper tube 3 is provided with a copper cap 4 , the copper cap 4 is sleeved on the RF coaxial cable 2; the length of the RF coaxial cable 2 is 110mm±1.0mm, the length of the copper tube 3 is 33mm, the material of the glass fiber tube 1 is glass fiber reinforced plastic material, and the length of the glass fiber tube 1 is 150mm±1.0mm; it can be understood that a glass fiber tube 1 with a length of 150mm±1.0mm is set to sleeve the coaxial line component, and a RF coaxial cable 2 with a length of 110mm±1.0mm is used to connect the N-head connector 11 and the PCB board, and a copper tube 3 with a length of 33mm is sleeved on the RF coaxial cable 2. Please combine Figure 5 ,The return loss diagram of the wide-band omnidirectional fiberglass antenna for drones in the 1800MHz-2000MHz frequency band shows that the antenna can stably perform long-distance image transmission in the 1800MHz-2000MHz frequency band, which improves the antenna working bandwidth and is conducive to improving the antenna performance.

[0034] Further, please combine Figures 6 to 8 ,It can be seen that the wide-band omnidirectional fiberglass antenna of this UAV has good omnidirectionality at the operating frequencies of 1800MHz, 1900MHz and 2000MHz.

[0035] Preferably, a first foam 5 is sleeved on the outer wall of the copper tube 3, and the first foam 5 is in contact with the inner wall of the glass fiber tube 1, and the first foam 5 can improve the stability of the copper tube 3; further, a second foam 6 is sleeved on the RF coaxial cable 2 and is in contact with the inner wall of the copper tube 3, and the second foam 6 can ensure the coaxiality between the RF coaxial cable 2 and the copper tube 3.

[0036] Please combine Figures 2 to 4The radio frequency coaxial cable 2 includes an inner core 21, an inner insulating layer 22, a welding layer 23 and an outer insulating layer 24 which are sequentially connected from the inside to the outside, the opposite ends of the inner core 21 are exposed to the inner insulating layer 22, the opposite ends of the inner insulating layer 22 are exposed to the welding layer 23, and the opposite ends of the welding layer 23 are exposed to the outer insulating layer 24; one end of the inner core 21 is used for welding with the PCB board, and the other end of the inner core 21 is used for connecting with the inner conductor of the N-head connector 11; one end of the welding layer 23 is used for welding with the copper cap 4, The other end of the welding layer 23 is used for welding with the N-head connector 11; the RF coaxial cable 2 has a simple structure and can simultaneously realize the connection between the copper tube 3 and the N-head connector 11 and between the PCB board and the inner conductor of the N-head connector 11; specifically, the copper cap 4 is provided with a sleeve through hole 41, and one end of the welding layer 23 is welded in the sleeve through hole 41, and the sleeve through hole 41 facilitates welding with the welding layer 23; more specifically, the outer wall of the copper cap 4 is provided with an installation notch 42 for connecting with the inner wall of the copper tube 3.

[0037] 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 1800MHz-2000MHz frequency band, and a glass fiber tube with a length of 150mm±1.0mm is set to socket the coaxial cable assembly, and a radio frequency coaxial cable with a length of 110mm±1.0mm is used to connect the N-head connector and the PCB board, and a copper tube with a length of 33mm is socketed on the radio frequency coaxial cable, so that the antenna can stably perform long-distance image transmission in the 1800MHz-2000MHz frequency band, thereby improving the antenna working bandwidth and facilitating the improvement of antenna performance.

[0038] 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, wherein 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 inside the glass fiber tube; the coaxial line assembly includes a radio frequency coaxial cable, a copper tube and a PCB board, one end of the radio frequency coaxial cable is welded to the PCB board, the other end of the radio frequency coaxial cable is installed at the N-head connector, a copper cap is provided on the inner side wall of the copper tube, and the copper cap is sleeved on the radio frequency coaxial cable; the length of the radio frequency coaxial cable is 110mm±1.0mm, the length of the copper tube is 33mm, the material of the glass fiber tube is glass fiber reinforced plastic material, and the length of the glass fiber tube is 150mm±1.0mm.

2. 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.

3. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The radio frequency coaxial cable is sleeved with a second foam cotton which contacts the inner wall of the copper tube.

4. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The radio frequency coaxial cable includes an inner core, an inner insulating layer, a welding layer and an outer insulating layer connected in sequence from the inside to the outside, the opposite ends of the inner core are exposed to the inner insulating layer, the opposite ends of the inner insulating layer are exposed to the welding layer, and the opposite ends of the welding layer are exposed to the outer insulating layer; one end of the inner core is used for welding to the PCB board, and the other end of the inner core is used for connecting to the inner conductor of the N-head connector; one end of the welding layer is used for welding to the copper cap, and the other end of the welding layer is used for welding to the N-head connector.

5. The wide-band omnidirectional fiberglass antenna for drones according to claim 4, characterized in that: The copper cap is provided with a sleeve through hole, and one end of the welding layer is welded in the sleeve through hole.

6. The wide-band omnidirectional fiberglass antenna for drone according to claim 1, characterized in that: The outer side wall of the copper cap is provided with a mounting notch for connecting with the inner side wall of the copper tube.

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