HF, VHF and UHF electromagnetic compatible three-frequency-band airborne antenna

Abstract

The utility model discloses an HF, VHF and UHF electromagnetic compatible three-frequency-band airborne antenna, and belongs to the technical field of antennas. The HF, VHF and UHF electromagnetic compatible three-frequency-band airborne antenna comprises an antenna protection box bottom body, the top end of the antenna protection box bottom body is provided with an antenna protection box cover, and the inner bottom end of the antenna protection box bottom body is provided with a bottom reflection plate. A first VHF antenna oscillator, a second VHF antenna oscillator, a first UHF antenna oscillator, a second UHF antenna oscillator, a first HF antenna oscillator and a second HF antenna oscillator are arranged at the top end of the bottom reflecting plate; the bottom end of the first VHF antenna oscillator, the bottom end of the second VHF antenna oscillator, the bottom end of the first UHF antenna oscillator, the bottom end of the second UHF antenna oscillator, the bottom end of the first HF antenna oscillator and the bottom end of the second HF antenna oscillator are respectively provided with a first insulating column. And the electromagnetic compatibility problem of HF, VHF and UHF is met, and the high practical value is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antenna, concretely is a HF, VHF, UHF electromagnetic compatibility three frequency band airborne antenna. BACKGROUND

[0002] In the modern aviation field, with the increasing complexity and diversification of aircraft functions, the number of airborne electronic devices increases sharply. These devices cover multiple key systems such as communication, navigation, and monitoring, and they rely on electromagnetic signals of different frequency bands for work. However, the coexistence of numerous airborne devices in limited space makes the electromagnetic environment extremely complex. Interference between antennas of different frequency bands is easy to occur.

[0003] Based on the above, the present inventor found that the following problems exist: traditional single-band or dual-band antennas have been difficult to meet the growing demand for multi-system collaboration, and there is an urgent need for an airborne antenna that can achieve electromagnetic compatibility in the HF, VHF, and UHF three key frequency bands to optimize the electromagnetic environment on the aircraft, ensure stable and efficient operation of various electronic devices, and thus improve the overall performance and flight safety of the aircraft.

[0004] Therefore, in view of the above, the existing structure and deficiencies are studied and improved, and a HF, VHF, UHF electromagnetic compatibility three frequency band airborne antenna is provided to achieve a more practical value purpose. SUMMARY

[0005] The utility model aims at providing a HF, VHF, UHF electromagnetic compatibility three frequency band airborne antenna to solve the problem that the traditional single-band or dual-band antenna has been difficult to meet the growing demand for multi-system collaboration as mentioned in the background.

[0006] In view of the above problems, the technical solution proposed by the utility model is:

[0007] The utility model relates to a HF, VHF, UHF electromagnetic compatibility three frequency band airborne antenna, including antenna protection box bottom body, the top of antenna protection box bottom body is equipped with antenna protection box cover, the inside bottom of antenna protection box bottom body is equipped with bottom reflection plate, the top of bottom reflection plate is equipped with first VHF antenna oscillator, second VHF antenna oscillator, first UHF antenna oscillator, second UHF antenna oscillator, first HF antenna oscillator and second HF antenna oscillator, the bottom of first VHF antenna oscillator, the bottom of second VHF antenna oscillator, the bottom of first UHF antenna oscillator, the bottom of second UHF antenna oscillator, the bottom of first HF antenna oscillator and the bottom of second HF antenna oscillator are equipped with first insulating column, the bottom of first insulating column is connected with the top of bottom reflection plate, the top of first VHF antenna oscillator and second VHF antenna oscillator is equipped with VHF antenna deployment board, the top of first VHF antenna oscillator and second VHF antenna oscillator is equipped with second insulating column, the top of second insulating column is fixedly connected with the bottom of VHF antenna deployment board, the bottom of bottom reflection plate is riveted with first socket, second socket and third socket, and the top of bottom reflection plate is connected with VHF antenna load.

[0008] Further, the outer side of the VHF antenna load is provided with a fixing sleeve, and the bottom end of the fixing sleeve is fixedly connected with the top end of the bottom reflection plate.

[0009] The beneficial effects of the above further scheme are that the VHF antenna load is tightly locked and fixed to the top end of the bottom reflection plate by installing a fixing sleeve on the outer side of the VHF antenna load.

[0010] Further, one end of the VHF antenna load is connected with the top end of the bottom reflection plate, and the other end of the VHF antenna load is connected with the bottom end of the second VHF antenna oscillator.

[0011] The beneficial effects of the above further scheme are that the VHF antenna load is tightly locked and fixed to the top end of the bottom reflection plate by installing a fixing sleeve on the outer side of the VHF antenna load.

[0012] Further, the top end of the first socket is connected with a first coaxial cable, one end of the outer skin of the first coaxial cable is welded with the bottom end of the first UHF antenna oscillator, and one end of the conductor of the first coaxial cable is welded with the bottom end of the second UHF antenna oscillator.

[0013] The beneficial effect of the above further scheme is that the first coaxial cable is connected to the top end of the first socket, providing a standardized and stable connection point for the first coaxial cable, ensuring the reliability of the signal transmission interface.

[0014] Further, the top end of the second socket is connected to the second coaxial cable, and one end of the outer skin of the second coaxial cable is welded to the bottom end of the second HF antenna oscillator. One end of the conductor of the second coaxial cable is welded to the bottom end of the first HF antenna oscillator.

[0015] The beneficial effect of the above further scheme is that the second coaxial cable is connected to the top end of the second socket, providing a standardized and stable connection point for the second coaxial cable, ensuring the reliability of the signal transmission interface.

[0016] Further, the top end of the third socket is connected to the third coaxial cable, and one end of the outer skin of the third coaxial cable is welded to the bottom end of the second VHF antenna oscillator. One end of the conductor of the third coaxial cable is welded to the bottom end of the first VHF antenna oscillator.

[0017] The beneficial effect of the above further scheme is that the third coaxial cable is connected to the top end of the third socket, providing a standardized and stable connection point for the third coaxial cable, ensuring the reliability of the signal transmission interface.

[0018] Further, the bottom end of the first socket, the second socket and the third socket all penetrate the bottom end of the bottom body of the antenna protection box.

[0019] The beneficial effect of the above further scheme is that the bottom end of the first socket, the second socket and the third socket all penetrate the bottom end of the bottom body of the antenna protection box, facilitating the orderly leading out of the cable and seamlessly connecting the antenna with the complex communication line architecture inside the unmanned aerial vehicle.

[0020] Compared with the prior art, the HF, VHF and UHF electromagnetic compatible three-frequency-band airborne antenna has the following beneficial effects: the first VHF antenna oscillator and the second VHF antenna oscillator are suitable for short-distance communication with high terrain penetration requirement, such as communication with a ground command center during low-altitude flight; the first UHF antenna oscillator and the second UHF antenna oscillator have strong anti-interference capability in complex electromagnetic environments such as urban environments, and meet the data exchange of an airplane in a busy airspace and surrounding aircraft; the first HF antenna oscillator and the second HF antenna oscillator can transmit at a long distance and can be reflected by the ionosphere, thereby ensuring communication with a remote station when the airplane is flying across an ocean or in a remote area, so that one machine is used for multiple purposes, the airplane space and installation cost are saved, the comprehensive communication efficiency is improved, the first VHF antenna oscillator and the second VHF antenna oscillator work cooperatively to finely adjust the antenna impedance, so that the first VHF antenna oscillator and the second VHF antenna oscillator are perfectly matched with the front-end equipment such as the feeder, the transmitter or the receiver, the fixed sleeve is mounted on the outer side of the VHF antenna load, the VHF antenna load is tightly locked, and the VHF antenna load is fixed to the top end of the bottom reflector plate, the VHF antenna load absorbs the excess energy of the VHF frequency band, prevents signal scattering and interference with other frequency band communication caused by energy reflection, and simultaneously assists in optimizing the antenna impedance matching and improving the overall performance of the VHF frequency band, so that the VHF frequency band is stably operated in a multi-frequency-band cooperative working environment, the electromagnetic compatibility of the whole machine is avoided to be affected by its own problems, the first coaxial cable is connected to the top end of the first socket, the first coaxial cable is provided with a standardized and stable connection point, and the signal transmission interface is reliable, the second coaxial cable is connected to the top end of the second socket, the second coaxial cable is provided with a standardized and stable connection point, and the signal transmission interface is reliable, the third coaxial cable is connected to the top end of the third socket, the third coaxial cable is provided with a standardized and stable connection point, and the signal transmission interface is reliable, the cables are sequentially led out through the bottom end of the antenna protection box bottom body, the antenna is seamlessly connected with the complex communication line architecture inside the unmanned aerial vehicle, the utility model can realize the problems of small size, light weight, large power and compact structure, and meet the HF, VHF and UHF electromagnetic compatibility, and has high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A three-dimensional structure schematic view disclosed by the utility model embodiment is shown in the figure;

[0022] Figure 2The utility model discloses a three -dimensional structure schematic diagram no.

[0023] Figure 3 The utility model discloses an antenna protection box bottom body section structure schematic diagram no.

[0024] Figure 4 The utility model discloses an antenna protection box bottom body section structure schematic diagram no.

[0025] In the drawing: 1, antenna protection box bottom body; 2, antenna protection box cover; 3, first VHF antenna oscillator; 4, VHF antenna deployment board; 5, second VHF antenna oscillator; 6, first UHF antenna oscillator; 7, second UHF antenna oscillator; 8, first HF antenna oscillator; 9, VHF antenna load; 91, fixed cover; 10, first socket; 11, first coaxial cable; 12, second socket; 13, second coaxial cable; 14, third socket; 15, third coaxial cable; 16, second HF antenna oscillator; 17, first insulating column; 18, bottom reflection plate; 19, second insulating column. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work fall within the scope of the utility model.

[0027] Please refer to Figures 1-4The utility model provides a technical scheme: a HF, VHF, UHF electromagnetic compatibility three frequency band airborne antenna, including antenna protection box bottom body 1, the top of antenna protection box bottom body 1 is equipped with antenna protection box cover 2, the inside bottom of antenna protection box bottom body 1 is equipped with bottom reflection plate 18, the top of bottom reflection plate 18 is equipped with first VHF antenna oscillator 3, second VHF antenna oscillator 5, first UHF antenna oscillator 6, second UHF antenna oscillator 7, first HF antenna oscillator 8 and second HF antenna oscillator 16, the bottom of first VHF antenna oscillator 3, the bottom of second VHF antenna oscillator 5, the bottom of first UHF antenna oscillator 6, the bottom of second UHF antenna oscillator 7, the bottom of first HF antenna oscillator 8 and the bottom of second HF antenna oscillator 16 are all equipped with first insulating column 17, the bottom of first insulating column 17 is connected with the top of bottom reflection plate 18, the top of first VHF antenna oscillator 3 and second VHF antenna oscillator 5 is equipped with VHF antenna deployment board 4, the top of first VHF antenna oscillator 3 and second VHF antenna oscillator 5 is all equipped with second insulating column 19, the top of second insulating column 19 is fixedly connected with the bottom of VHF antenna deployment board 4, the bottom of bottom reflection plate 18 is riveted with first socket 10, second socket 12 and third socket 14, the top of bottom reflection plate 18 is connected with VHF antenna load 9, through the setting of first VHF antenna oscillator 3, second VHF antenna oscillator 5, first UHF antenna oscillator 6, second UHF antenna oscillator 7, first HF antenna oscillator 8 and second HF antenna oscillator 16, realize that the antenna oscillator of different frequency bands each performs its own function, and first VHF antenna oscillator 3 and second VHF antenna oscillator 5 are suitable for close-range, high-terrain penetration requirement communication, such as low-altitude flight and ground command center contact, first UHF antenna oscillator 6 and second UHF antenna oscillator 7 have strong anti-interference ability in complex electromagnetic environment such as urban environment, satisfy the data exchange of aircraft in busy airspace and surrounding aircraft, first HF antenna oscillator 8 and second HF antenna oscillator 16 then rely on its long-distance transmission, can rely on ionospheric reflection characteristics, ensure that the aircraft communicates with remote sites when transoceanic flight, remote area flight, thereby realize one machine multiple use, need not equip antenna alone for different frequency bands, save aircraft space and installation cost, improve comprehensive communication efficiency, through the setting of VHF antenna deployment board 4, according to VHF frequency band communication characteristics, first VHF antenna oscillator 3 and second VHF antenna oscillator 5 work cooperatively, fine adjustment antenna impedance, make it and feeder, transmitter or receiver and so on front-end equipment realize perfect match.

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] Please refer to Figures 1-4 The outer side of the VHF antenna load 9 is provided with a fixing sleeve 91, the bottom end of the fixing sleeve 91 is fixedly connected with the top end of the bottom reflecting plate 18, one end of the VHF antenna load 9 is connected with the top end of the bottom reflecting plate 18, the other end of the VHF antenna load 9 is connected with the bottom end of the second VHF antenna oscillator 5, the fixing sleeve 91 is arranged on the outer side of the VHF antenna load 9, so that the VHF antenna load 9 is tightly locked and fixed on the top end of the bottom reflecting plate 18, the VHF antenna load 9 is arranged on the outer side of the VHF antenna load 9, so that the VHF frequency band redundant energy is absorbed, signal scattering and interference of other frequency band communication caused by energy reflection are prevented, the antenna impedance matching is assisted to be optimized, the overall performance of the VHF frequency band is improved, the frequency band is ensured to stably operate in a multi-frequency band cooperative working environment, and the electromagnetic compatibility of the whole machine is avoided to be affected by self problems.

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0031] Please refer to Figures 1-4The top end of the first socket 10 is connected with the first coaxial cable 11, and the outer skin of the first coaxial cable 11 is welded with the bottom end of the first UHF antenna oscillator 6. The conductor of the first coaxial cable 11 is welded with the bottom end of the second UHF antenna oscillator 7. The top end of the second socket 12 is connected with the second coaxial cable 13, and the outer skin of the second coaxial cable 13 is welded with the bottom end of the second HF antenna oscillator 16. The conductor of the second coaxial cable 13 is welded with the bottom end of the first HF antenna oscillator 8. The top end of the third socket 14 is connected with the third coaxial cable 15, and the outer skin of the third coaxial cable 15 is welded with the bottom end of the second VHF antenna oscillator 5. The conductor of the third coaxial cable 15 is welded with the bottom end of the first VHF antenna oscillator 3. The bottom end of the first socket 10, the second socket 12 and the third socket 14 all penetrate the bottom end of the bottom body 1 of the antenna protection box. The top end of the first socket 10 is connected with the first coaxial cable 11 to provide a standardized and stable connection point for the first coaxial cable 11, ensuring the reliability of the signal transmission interface. The top end of the second socket 12 is connected with the second coaxial cable 13 to provide a standardized and stable connection point for the second coaxial cable 13, ensuring the reliability of the signal transmission interface. The top end of the third socket 14 is connected with the third coaxial cable 15 to provide a standardized and stable connection point for the third coaxial cable 15, ensuring the reliability of the signal transmission interface. The bottom end of the first socket 10, the second socket 12 and the third socket 14 all penetrate the bottom end of the bottom body 1 of the antenna protection box, which facilitates the orderly leading-out of the cables and enables the seamless connection of the antenna and the complex communication line architecture inside the unmanned aerial vehicle.

[0032] Specifically, the working principle of the HF, VHF, UHF electromagnetic compatible three-frequency airborne antenna is as follows: when in use, the different frequency bands of the antenna oscillators are realized by the arrangement of the first VHF antenna oscillator 3, the second VHF antenna oscillator 5, the first UHF antenna oscillator 6, the second UHF antenna oscillator 7, the first HF antenna oscillator 8 and the second HF antenna oscillator 16. The first VHF antenna oscillator 3 and the second VHF antenna oscillator 5 are suitable for short-distance communication with high terrain penetration requirement, such as communication with the ground command center during low-altitude flight. The first UHF antenna oscillator 6 and the second UHF antenna oscillator 7 have strong anti-interference ability in complex electromagnetic environments such as urban environments, and meet the data exchange of the aircraft in busy airspace and surrounding aircraft. The first HF antenna oscillator 8 and the second HF antenna oscillator 16 can transmit over long distances and reflect by means of the ionosphere, thereby ensuring communication with remote sites during transoceanic flight and remote area flight, so as to realize one machine with multiple functions, without the need to separately equip antennas for different frequency bands, saving aircraft space and installation cost, improving the comprehensive communication efficiency, and through the arrangement of the VHF antenna distribution plate 4, the first VHF antenna oscillator 3 and the second VHF antenna oscillator 5 are cooperated to work according to the communication characteristics of the VHF frequency band, the impedance of the antenna is finely adjusted to realize perfect matching with the front-end equipment such as the feeder, transmitter or receiver, the fixed sleeve 91 is arranged on the outer side of the VHF antenna load 9 to tightly lock the VHF antenna load 9 and firmly fix it on the top end of the bottom reflector plate 18, the VHF antenna load 9 is arranged to absorb the excess energy of the VHF frequency band, prevent signal scattering and interference with other frequency band communication caused by energy reflection, and assist in optimizing the impedance matching of the antenna to improve the overall performance of the VHF frequency band and ensure stable operation of the frequency band in a multi-frequency band cooperative working environment, avoid affecting the electromagnetic compatibility of the whole machine due to its own problems, the first coaxial cable 11 is connected to the top end of the first socket 10 to provide a standardized and stable connection point for the first coaxial cable 11, ensure the reliability of the signal transmission interface, the second coaxial cable 13 is connected to the top end of the second socket 12 to provide a standardized and stable connection point for the second coaxial cable 13, ensure the reliability of the signal transmission interface, the third coaxial cable 15 is connected to the top end of the third socket 14 to provide a standardized and stable connection point for the third coaxial cable 15, ensure the reliability of the signal transmission interface, the bottom ends of the first socket 10, the second socket 12 and the third socket 14 are all penetrated through the bottom end of the antenna protection box bottom body 1, the cables are orderly led out, the antenna is seamlessly connected with the complex communication line architecture inside the unmanned aerial vehicle, the utility model can realize the problems of small size, light weight, large power and compact structure, and meet the HF, VHF, UHF electromagnetic compatibility, and has high practical value.

Claims

1. An HF, VHF, UHF electromagnetically compatible tri-band airborne antenna, characterized in that, The application relates to an antenna protection box, which comprises an antenna protection box bottom body (1), a top end of the antenna protection box bottom body (1) is provided with an antenna protection box cover (2), an inner bottom end of the antenna protection box bottom body (1) is provided with a bottom reflection plate (18), a top end of the bottom reflection plate (18) is provided with a first VHF antenna oscillator (3), a second VHF antenna oscillator (5), a first UHF antenna oscillator (6), a second UHF antenna oscillator (7), a first HF antenna oscillator (8) and a second HF antenna oscillator (16), a bottom end of the first VHF antenna oscillator (3), a bottom end of the second VHF antenna oscillator (5), a bottom end of the first UHF antenna oscillator (6), a bottom end of the second UHF antenna oscillator (7), a bottom end of the first HF antenna oscillator (8) and a bottom end of the second HF antenna oscillator (16) are provided with first insulating columns (17), bottom ends of the first insulating columns (17) are connected with a top end of the bottom reflection plate (18), top ends of the first VHF antenna oscillator (3) and the second VHF antenna oscillator (5) are provided with a VHF antenna adjusting plate (4), top ends of the first VHF antenna oscillator (3) and the second VHF antenna oscillator (5) are provided with second insulating columns (19), top ends of the second insulating columns (19) are fixedly connected with a bottom end of the VHF antenna adjusting plate (4), a bottom end of the bottom reflection plate (18) is riveted with a first socket (10), a second socket (12) and a third socket (14), and a top end of the bottom reflection plate (18) is connected with a VHF antenna load (9).

2. An HF, VHF, UHF electromagnetically compatible tri-band airborne antenna according to claim 1, characterized in that, A fixing sleeve (91) is arranged on the outer side of the VHF antenna load (9), and a bottom end of the fixing sleeve (91) is fixedly connected with a top end of the bottom reflection plate (18).

3. An HF, VHF, UHF electromagnetically compatible tri-band airborne antenna according to claim 1, characterized in that, One end of the VHF antenna load (9) is connected with a top end of the bottom reflection plate (18), and the other end of the VHF antenna load (9) is connected with a bottom end of the second VHF antenna oscillator (5).

4. The HF, VHF, UHF electromagnetically compatible tri-band airborne antenna according to claim 1, characterized in that, A first coaxial cable (11) is connected with a top end of the first socket (10), one end of the outer skin of the first coaxial cable (11) is welded with a bottom end of the first UHF antenna oscillator (6), and one end of the conductor of the first coaxial cable (11) is welded with a bottom end of the second UHF antenna oscillator (7).

5. The HF, VHF, UHF electromagnetically compatible tri-band airborne antenna according to claim 1, characterized in that, A second coaxial cable (13) is connected with a top end of the second socket (12), one end of the outer skin of the second coaxial cable (13) is welded with a bottom end of the second HF antenna oscillator (16), and one end of the conductor of the second coaxial cable (13) is welded with a bottom end of the first HF antenna oscillator (8).

6. An HF, VHF, UHF electromagnetically compatible tri-band airborne antenna according to claim 1, characterized in that, A third coaxial cable (15) is connected with a top end of the third socket (14), one end of the outer skin of the third coaxial cable (15) is welded with a bottom end of the second VHF antenna oscillator (5), and one end of the conductor of the third coaxial cable (15) is welded with a bottom end of the first VHF antenna oscillator (3).

7. The HF, VHF, UHF electromagnetically compatible tri-band airborne antenna according to claim 1, characterized in that, The bottom ends of the first socket (10), the second socket (12) and the third socket (14) all penetrate through the bottom end of the antenna protection box bottom body (1).

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