Antenna device and aircraft countering equipment

Abstract

The invention discloses an antenna device and aircraft countering equipment, and relates to the technical field of aircraft control. The antenna device comprises an outer shell and a directional antenna assembly, the directional antenna assembly is arranged in the outer shell, and the directional antenna assembly is used for transmitting signals; a first effective coverage angle of projection of a signal emitted by the directional antenna assembly on the first plane is smaller than a second effective coverage angle of projection of the signal on the second plane; the first plane is perpendicular to the second plane, the first plane is parallel to the length direction of the antenna device, and the first plane and the second plane are both perpendicular to the radiating surface of the outer shell. The effective coverage angles of interference signals emitted by the antenna device on the first plane and the second plane are different, so that when the antenna device is applied to aircraft countering equipment, the second plane can be arranged along the edge of a control area, the interference range corresponding to the single aircraft countering equipment can be increased, and the interference efficiency is improved under the condition that the requirement is met. And the number of aircraft countering equipment can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of aircraft control technology, and more specifically, to an antenna device. In addition, the present application also relates to an aircraft countermeasure device including the above antenna device. Background Art

[0002] At present, with the prevalence of the drone market, more and more "low, slow and small" aircraft have gradually appeared. For some areas with high confidentiality requirements (such as prisons, places where important government agencies are located, etc.), it is strictly forbidden for aircraft to approach, pass or fly over. In order to protect the safety of the controlled area and prevent aircraft from entering the controlled area, it is necessary to set up relevant antenna devices, and transmit relevant interference signals through the antenna devices to achieve control of the controlled area. However, the antennas in the current countermeasures will emit strong interference signals in all directions, which can easily affect nearby wireless communications. In summary, how to provide an antenna device for a countermeasure device that has little impact on wireless communications in nearby areas is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0003] In view of this, an object of an embodiment of the present application is to provide an antenna device that can reduce the impact on nearby wireless communications.

[0004] Another object of an embodiment of the present application is to provide an aircraft countermeasure device including the above-mentioned antenna device.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] An antenna device, comprising an outer shell and a directional antenna assembly, wherein the directional antenna assembly is arranged in the outer shell and is used to transmit a signal;

[0007] A first effective coverage angle of the signal projected on the first plane is smaller than a second effective coverage angle of the signal projected on the second plane;

[0008] The first plane is perpendicular to the second plane, the first plane is parallel to the length direction of the antenna device, and the first plane and the second plane are both perpendicular to the radiation surface of the outer shell.

[0009] Optionally, the directional antenna assembly includes:

[0010] A reflector plate provided with a mounting frame;

[0011] An antenna, wherein the antenna is disposed on the mounting frame, and a gap is provided between the antenna and the reflector;

[0012] The antenna is an omnidirectional antenna, and the antenna is located between the radiation surface and the reflection plate.

[0013] Optionally, along the length direction of the antenna, at least part of the antenna has one end disposed on the outer shell and the other end disposed on the mounting bracket.

[0014] Optionally, the antenna is a cylindrical antenna, and an extension direction of the cylindrical antenna is parallel to a length direction of the radiation surface.

[0015] Optionally, there are multiple antennas, and the multiple antennas are distributed at intervals in the width direction of the reflector.

[0016] Optionally, the mounting frame comprises:

[0017] A connecting substrate, used to connect with the reflecting plate;

[0018] A clamping portion, disposed on a side of the connecting substrate facing away from the reflecting plate, and the clamping portion is used to clamp the antenna;

[0019] A supporting portion, one end of which is connected to the connecting substrate, and the other end of which is connected to the clamping portion.

[0020] Optionally, at least one of the clamping portion and the supporting portion is an insulating elastic member.

[0021] Optionally, the clamping portion has an opening disposed toward the radiation surface, and two sides of the opening of the clamping portion are elastic structures.

[0022] Optionally, the distance between the center of the cross section of the antenna and the reflector is (1 / 4)*λ, where λ is the wavelength of a frequency band corresponding to the signal emitted by the antenna.

[0023] Optionally, the outer shell comprises an outer shell, a first end cover and a second end cover, the first end cover and the second end cover are respectively arranged at two ends of the outer shell in a length direction, and one end of the antenna is arranged at one of the first end cover and the second end cover;

[0024] The reflector, the mounting bracket and the antenna are located in a space formed by the housing, the first end cover and the second end cover.

[0025] An aircraft countermeasure device comprises the antenna device described in any one of the above items.

[0026] Optionally, the aircraft countermeasure equipment further includes a mounting device and a fixing device; the antenna device is rotatably mounted on the fixing device via the mounting device.

[0027] When using the antenna device provided in the embodiment of the present application, the first effective coverage angle of the signal emitted by the directional antenna component projected on the first plane is smaller than the second effective coverage angle of the signal projected on the second plane, and the first plane is perpendicular to the second plane, that is, the signal has a narrower coverage range in one direction and a wider coverage range in another direction. The signal can form an effect similar to a signal wall. Therefore, when the antenna component proposed in the embodiment of the present application is placed on the boundary of the controlled area, it can prevent aircraft from entering the controlled area while avoiding the emission of strong interference signals in all directions, thereby achieving the effect of reducing the impact on nearby wireless communications.

[0028] In addition, since the effective coverage angles of the signal emitted by the antenna device are different in the first plane and the second plane, when applied to aircraft countermeasure equipment, the second plane can be set along the edge of the control area, which is conducive to increasing the interference range corresponding to a single aircraft countermeasure equipment. When the requirements are met, the number of aircraft countermeasure equipment can also be effectively reduced. In addition, the embodiment of the present application also provides an aircraft countermeasure equipment including the above-mentioned antenna device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the appearance of a specific embodiment of the antenna device provided in this application.

[0031] Figure 2 for Figure 1 A schematic diagram of a first effective coverage angle of a signal transmitted by an antenna device in a first plane is provided.

[0032] Figure 3 This is a simulation diagram of the radiation effect of the signal on the first plane.

[0033] Figure 4 for Figure 1 A schematic diagram of a second effective coverage angle of a signal transmitted by an antenna device in a second plane is provided.

[0034] Figure 5 This is a simulation diagram of the radiation effect of the signal on the second plane.

[0035] Figure 6 An exploded schematic diagram of the antenna device provided in an embodiment of the present application.

[0036] Figure 7 for Figure 1 Schematic diagram of the directional antenna assembly within the antenna device shown.

[0037] Figure 8 for Figure 7 A schematic diagram of the structure of the mounting frame in the directional antenna assembly shown.

[0038] Fig. 9 A schematic diagram of the structure of a specific embodiment of the aircraft countermeasure device provided in the embodiment of the present application.

[0039] Description of Figure Numbers:

[0040] 100 is an antenna device;

[0041] 100a is the outer shell; 100a1 is the radiation surface; 110 is the first end cover; 120 is the outer shell; 130 is the second end cover;

[0042] 140 is a reflector;

[0043] 150 is an antenna, 151 is a first antenna, 152 is a second antenna, 153 is a third antenna, 154 is a fourth antenna, and 155 is a fifth antenna;

[0044] 160 is a mounting frame, 161 is a connecting substrate, 162 is a supporting portion, 162A is a first supporting rib, 162B is a second supporting rib, 162C is a third supporting rib, and 163 is a clamping portion;

[0045] 200 is a control device;

[0046] 300 is a fixed device;

[0047] 400 is a radio frequency cable;

[0048] 500 is a mounting device;

[0049] 510 is a first installation structure, and 520 is a second installation structure;

[0050] A is the first effective coverage angle, and B is the second effective coverage angle. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0052] The core of an embodiment of the present application is to provide an antenna device. By setting an antenna and a reflector, it can be achieved that the first effective coverage angle of the interference signal in the first plane is smaller than its second effective coverage angle in the second plane. It can be used for aircraft countermeasure equipment that reduces the impact on wireless communications in nearby areas.

[0053] Another core of an embodiment of the present application is to provide an aircraft countermeasure device including the above-mentioned antenna device.

[0054] This specific embodiment discloses an antenna device 100, which includes an outer shell 100a and a directional antenna assembly. The directional antenna assembly is arranged in the outer shell 100a and is used to transmit signals. The signal transmitted by the directional antenna assembly is projected on a first plane (such as Figure 2 The first effective coverage angle A shown in FIG. 1 is smaller than the projection of the signal on the second plane (as shown in FIG. Figure 4 The first plane is perpendicular to the second plane, the first plane is parallel to the length direction of the antenna device 100, and both the first plane and the second plane are perpendicular to the radiation surface 100a1 of the outer shell 100a.

[0055] The radiation surface 100a1 mentioned in the embodiment of the present application is a surface used for transmitting signals in the directional antenna assembly. The first plane may be parallel to the length direction D1 of the antenna device 100. The second plane may be parallel to the width direction D2 of the antenna device 100.

[0056] The first effective coverage angle A mentioned in the embodiment of the present application may refer to the coverage angle of the signal having a radiation intensity greater than the first preset radiation intensity in the first plane projection. Figure 3 As shown, the first effective coverage angle A may be an angle within a coverage range of approximately -15° to 15°. The second effective coverage angle B may refer to a coverage angle of a signal having a radiation intensity greater than a second preset radiation intensity in a second plane projection, such as Figure 5 As shown, the second effective coverage angle B can be approximately an angle within the coverage range of -60° to 60°. If the radiation intensity is greater than the first preset radiation intensity, or greater than the second preset radiation intensity, it means that the radiation intensity of the signal can meet the requirements, such as achieving the interference effect. Alternatively, it can be understood that the first effective coverage angle A is the beam width of the signal in the first plane, and the second effective coverage angle B is the beam width of the signal in the second plane.

[0057] The first plane and the second plane mentioned in this specific embodiment may be planes perpendicular to the upper end surface or the lower end surface of the antenna device 100. For example, the first plane may be perpendicular to the upper end surface or the lower end surface of the antenna device 100. Figure 2 The side surfaces shown are parallel, or the first plane is the antenna device 100 as shown in FIG. Figure 2The second plane may be aligned with the antenna device 100 as shown in FIG. Figure 4 The side surfaces shown are parallel, or the second plane is the antenna device 100 as shown in FIG. Figure 4 Alternatively, the first plane and the second plane may also be planes whose angles with the upper end face or the lower end face of the antenna device 100 are greater than 0° and less than 90°. The first plane and the second plane are only a reference plane, and their purpose is to express the specific beam width of the signal from different perspectives.

[0058] Figure 2 It shows that the projection of the signal on the first plane has a narrow first effective coverage angle A, which can also be regarded as Figure 2 From the perspective shown, the beamwidth of the signal is narrow. Figure 4 It shows that the projection of the signal on the second plane has a wider second effective coverage angle B, which can also be regarded as Figure 4 From the perspective shown, the beam width of the signal is relatively wide. Therefore, if the antenna device 100 provided in this embodiment is applied to a drone countermeasure device, in actual use, unlike the characteristic that the antenna in the traditional aircraft countermeasure device has a large interference signal strength in all directions, the interference signal emitted by the antenna device 100 provided in the embodiment of the present application is, for example, flat and diffused. Compared with the first plane, the interference signal in the embodiment of the present application has a wider beam in the second plane, which can be used as a form similar to a "signal wall" to prevent the intrusion of aircraft. In this way, the antenna device 100 in the embodiment of the present application can avoid emitting strong interference signals in all directions, thereby achieving the effect of reducing the impact on wireless communications in nearby areas.

[0059] It can be understood that the antenna device 100 provided in this embodiment can also be applied to other fields that have requirements on the signal radiation range, such as wireless communication equipment.

[0060] like Figure 2 As shown, D1 is the length direction of the antenna device 100, and angle A is the first effective coverage angle A of the signal emitted by the antenna device 100 in the specific embodiment of the present application. Figure 4 As shown, D2 is the width direction of the antenna device 100, and angle B is a second effective coverage angle B of the signal transmitted by the antenna device 100 in the specific embodiment of the present application.

[0061] In this embodiment, if the antenna device 100 is applied to flight countermeasure equipment, the interference signal is radiated to both sides with a smaller coverage range along the middle section perpendicular to the upper end surface of the antenna device 100 and the length direction D1, so that the thickness of the "signal wall" is thinner to prevent the interference signal from interfering with the legitimate equipment in the controlled area. At the same time, the interference signal generated during the interference work radiates upward, which can effectively interfere with the aircraft in the air (such as a drone). The interference signal radiates to both sides with a larger coverage range along the middle section perpendicular to the upper end surface and perpendicular to the width direction D2, that is, when the interference work is performed, the signal wall formed by the interference signal can extend along the width direction D2 of the antenna device 100, which is convenient for arranging the antenna device 100. Among them, the specific method of generating the signal is not limited in this embodiment. If it is applied to aircraft countermeasure equipment, the interference signal can interfere with the aircraft, such as blocking the communication between the drone and the flight control terminal, interfering with the navigation signal, so that the drone cannot be accurately located, etc. The appearance of the antenna device 100 provided in the embodiment of the present application can be as follows Figure 1 The shape shown can also be other shapes that meet the requirements, which are determined according to actual conditions.

[0062] When the antenna device 100 provided in this specific embodiment is used, the antenna device 100 may include a plurality of antennas 150. The plurality of antennas 150 are arranged parallel to each other, and when the signal transmitted by the antenna 150 reaches the reflector 140, it will be reflected by the reflector 140, so that the rear lobe of the antenna 150 is reflected and superimposed with the corresponding front lobe, so that the first effective coverage angle A of the signal transmitted by the antenna 150 projected on the first plane is smaller than the second effective coverage angle B of the signal projected on the second plane, the first plane is perpendicular to the second plane, the first plane is a plane arranged along the length direction of the antenna 150, and the second plane is a plane arranged perpendicular to the length direction of the antenna 150.

[0063] Since the effective coverage angles of the signal emitted by the antenna device 100 are different in the first plane and the second plane, when applied to aircraft countermeasure equipment, the second plane can be set along the edge of the control area, which is beneficial to increase the interference range corresponding to a single aircraft countermeasure equipment. When the requirements are met, the number of aircraft countermeasure equipment can be effectively reduced.

[0064] Based on the above embodiments, Figures 6 to 8 As shown, the directional antenna assembly may specifically include a reflector 140 and an antenna 150, wherein the reflector 140 is provided with a mounting bracket 160. The antenna 150 is provided on the mounting bracket 160, and there is a gap between the antenna 150 and the reflector 140. The antenna 150 is an omnidirectional antenna, and the antenna 150 is located between the radiation surface 100a1 and the reflector 140.

[0065] In actual use, the reflector 140 can be made of metal, and the antenna 150 can be a directional antenna or an omnidirectional antenna. If the antenna 105 is an omnidirectional antenna, the front lobe of the antenna 150 is emitted toward the radiation surface 100a1, and the reflector 140 can reflect the back lobe of the antenna 150 to overlap with the front lobe. Therefore, the signal finally emitted from the radiation surface 100a1 includes both the front lobe of the antenna and the reflected back lobe. For example, when the antenna 150 uses a fiberglass antenna of an omnidirectional antenna, the reflector 140 can not only cooperate with the fiberglass antenna of the omnidirectional antenna to achieve the effect of a directional antenna, but also help to improve the gain of the front lobe of the antenna 150.

[0066] In this specific embodiment, the antenna 150 is disposed on the mounting frame 160, which can effectively support and fix the antenna 150, and can effectively improve the stability of the installation of the antenna 150. In addition, the antenna 150 is an omnidirectional antenna, which has a relatively simple design, a simpler installation process, does not require precise alignment, and has a low cost.

[0067] In a specific embodiment, if Figure 6 As shown, along the length direction of the antenna 150 , at least a portion of the antenna 150 has one end disposed on the outer shell 100 a and the other end disposed on the mounting bracket 160 .

[0068] The length direction of the antenna 150 is parallel to the length direction D1 of the antenna device 100. If one end of the antenna 150 is mounted on the outer shell 100a and the other end is mounted on the mounting bracket 160, it is equivalent to the mounting bracket 160 being located at the end of the antenna 150. Since the main radiation area of ​​the antenna 150 is in the middle, the mounting bracket 160 is located at the end of the antenna 150, which has little effect on the radiation performance of the antenna 150 and can make as many back lobes as possible be reflected to improve the gain of the antenna 150.

[0069] like Figure 6As shown, the antenna device 100 may specifically include a first end cap 110, a housing 120, a second end cap 130, a reflector 140, an antenna 150, and a mounting bracket 160. The first end cap 110, the housing 120, and the second end cap 130 constitute the entire external shell portion of the antenna device 100. The housing 120 is, for example, barrel-shaped. The first end cap 110 and the second end cap 130 are respectively covered at both ends of the length direction of the housing 120 to form a sealed cavity with the housing 120. The reflector 140, the antenna 150, and the mounting bracket 160 are all arranged in a space formed by the housing 120, the first end cap 130, and the second end cap 110. The antenna 150 may be a columnar glass fiber reinforced plastic antenna, one end of the antenna 150 is fixed on the inner side of the second end cap 130 or the first end cap 110, and the other end of the antenna 150 is mounted on the mounting bracket 160, and the mounting bracket 160 is mounted on the reflector 140. In this embodiment, if the lengths of all antennas 150 are similar, the other ends of all antennas 105 can be similar to each other. Figure 6 The other ends of the four antennas 150 on the left side are all mounted on the mounting frame 160. If the length of an antenna 150 is much longer than the length of the other antennas 150, such as Figure 6 Like the rightmost antenna 150 , the other ends of these longer antennas 150 can be suspended in the air or installed on the first end cover 110 or the second end cover 130 , and the middle part thereof can be mounted on the mounting frame 160 .

[0070] In this specific embodiment, the reflector 140, antenna 150, and mounting bracket 160 are all arranged in the space formed by the outer shell 120, the first end cover 130, and the second end cover 110, which can effectively protect the antenna 150 and reduce the impact of the external environment on the life of the antenna 150.

[0071] Specifically, the antenna 150 may be a cylindrical antenna, and the extension direction of the antenna 150 is parallel to the length direction of the radiation surface 100a1, so that the radiation direction of the antenna device 100 as a whole can be wider in its width direction and narrower in the length direction. The length direction of the radiation surface 100a1 is parallel to the length direction D1 of the antenna device 100. Specifically, the antenna 150 may be a fiberglass antenna.

[0072] The radiation surface 100a1 mentioned in this specific embodiment is the outer surface of the side wall of the housing 120 that is opposite to and spaced from the reflection plate 140 and radiates signals outward.

[0073] On the basis of the above embodiment, the number of the antennas 150 may be multiple, and the multiple antennas 150 are distributed at intervals in the width direction of the reflector 140 .

[0074] Specifically, the width direction of the reflector 140 is parallel to the width direction D2 of the antenna device 100. Figure 7As shown, the antenna 150 includes a first antenna 151, a second antenna 152, a third antenna 153, a fourth antenna 154, and a fifth antenna 155. The frequency band of each antenna 150 can be set to correspond to the communication frequency band of an aircraft. Each antenna 150 is set above the reflector 140 and at a certain distance from the reflector 140. Of course, in actual settings, the number of antennas 150 is not limited to the five used in this solution, and can be more or less than five.

[0075] Specifically, the distance between the center of the cross section of the antenna 150 and the reflector 140 is (1 / 4)*λ, where λ is the wavelength of the frequency band corresponding to the signal transmitted by the antenna 150, so as to better achieve directional transmission. Among them, the distance between each antenna 150 and the reflector 140 depends on the frequency band of its own transmitted signal. Therefore, if different antennas 150 correspond to different frequency bands, the distances between different antennas 150 and the reflector 140 are also different.

[0076] Based on the above embodiments, Figure 8 As shown, the mounting frame 160 specifically includes a connecting substrate 161, a clamping portion 163, and a supporting portion 162, wherein the connecting substrate 161 is used to connect to the reflector 140. The clamping portion 163 is disposed on the side of the connecting substrate 161 that is away from the reflector 140, that is, the clamping portion 163 is closer to the radiation surface 100a1. In addition, the clamping portion 163 is used to clamp the antenna 150. One end of the supporting portion 162 is connected to the connecting substrate 161, and the other end is connected to the clamping portion 163.

[0077] At least one of the clamping portion 163 and the supporting portion 162 is an insulating elastic member, which can effectively fix the antenna 150 and avoid affecting the operation of the antenna 150 compared to metal materials. It can also have a certain anti-vibration effect due to its elasticity.

[0078] On the other hand, since the mounting bracket 160 is located between the antenna 150 and the reflector 140, it will affect the reflective effect of the reflector 140 on the back lobe radiation of the antenna 150. Therefore, the mounting bracket 160 is arranged at the end position in the length direction of the antenna 150. Since the main radiation area of ​​the antenna 150 is in the middle position in the length direction, not at the end position, the antenna mounting bracket 160 installed at the end of the antenna 150 has little effect on the radiation performance of the antenna 150. Specifically, the mounting bracket 160 can be arranged at an end of the reflector 140 away from the second end cover 130. Compared with fixing the mounting bracket 160 at the middle position of the antenna 150, fixing the mounting bracket 160 at the end position in the length direction of the antenna 150 can reduce the influence of the mounting bracket 160 on the reflection effect of the reflector 140.

[0079] Furthermore, the clamping portion 163 may have an opening disposed toward the radiation surface 100a1, and both sides of the opening of the clamping portion 163 may be elastic structures.

[0080] like Figure 7 and Figure 8 As shown, the clamping portion 163 is a "C"-shaped structure. Since the clamping portion 163 is made of plastic material and has a certain elasticity, the antenna 150 can be inserted into the clamping portion 163 through the opening of the "C"-shaped structure. If the antenna 150 is a fiberglass antenna, the "C"-shaped clamping portion 163 is compatible with the axial cross-sectional shape of the fiberglass antenna, so the cylindrical fiberglass antenna can also be effectively clamped and fixed.

[0081] In this specific embodiment, the clamping portion 163 is configured to have an opening toward the radiation surface 100a1, which facilitates placing the antenna 150 in the clamping portion 163 and simplifies the operation process.

[0082] like Figure 8 As shown, the support portion 162 may specifically include a first support rib 162A, a second support rib 162B, and a third support rib 162C. The third support rib 162C is connected between the first support rib 162A and the second support rib 162B, and the thickness of the third support rib 162C is less than or equal to the thickness of the first support rib 162A or the thickness of the second support rib 162B, so as to reduce the weight of the mounting frame 160, which is conducive to achieving lightweight.

[0083] In addition to the above-mentioned antenna device 100, the present application also provides an aircraft countermeasure device including the antenna device 100 disclosed in the above-mentioned embodiment. For the structures of other parts of the aircraft countermeasure device except the antenna device 100, please refer to the prior art and will not be repeated herein.

[0084] In a specific embodiment, the aircraft countermeasure device further includes a mounting device 500 and a fixing device 300. The antenna device 100 is rotatably mounted on the fixing device 300 via the mounting device 500.

[0085] like Fig. 9As shown, the aircraft countermeasure device includes a control device 200, a fixing device 300, a radio frequency cable 400 and an installation device 500. The installation device 500 may specifically include a first installation structure 510 and a second installation structure 520. The control device 200 is electrically connected to the antenna device 100, and the control device 200 is used to control the antenna device 100 to transmit an interference signal. The antenna device 100 and the control device 200 are electrically connected via a radio frequency cable 400. The control device 200 outputs a radio frequency signal to the antenna device 100 via the radio frequency cable 400, and the antenna device 100 converts the received radio frequency signal into an electromagnetic wave signal of the corresponding frequency band and transmits it as an interference signal. When an aircraft (such as a drone) flies into the influence area of ​​the interference signal, the drone will be unable to communicate stably with the flight control terminal under the action of the interference signal, resulting in hovering, crashing or returning, etc., to achieve the interference effect on the drone.

[0086] The control device 200 may include a main controller, a baseband module, a power amplifier module, a power module, etc., wherein the main controller may be a CPU (Central Processing Unit) or an FPGA (Field Programmable Gate Array). In other optional embodiments, the control device 200 may also be equipped with a receiving antenna (not shown in the figure), which is used to receive electromagnetic wave signals in the air and convert them into corresponding electrical signals and then output them to the main controller. The main controller can obtain the communication information (such as communication channel, communication protocol, communication signal format, etc.) between the drone and the flight control terminal by analyzing and processing the received electrical signals, and the main controller can also generate a radio frequency signal according to the communication information, so that the antenna device 100 can transmit interference signals in a targeted manner, so as to improve the interference effect on the drone. Among them, the specific method of generating the interference signal is not limited in this embodiment, as long as it can interfere with the drone, such as blocking the communication between the drone and the flight control terminal, interfering with the navigation signal, so that the drone cannot be accurately positioned, etc.

[0087] When using the aircraft countermeasure device provided in this specific embodiment, the aircraft countermeasure device needs to be installed on the fixing device 300 first, and the antenna device 100 is rotatably installed on the fixing device 300 through the first mounting structure 510. The control device 200 is fixedly installed to the fixing device 300 through the second mounting structure 520. Specifically, the antenna device 100 is rotatably installed on the first mounting structure 510, and the first mounting structure 510 is fixed to the fixing device 300. The control device 200 is fixedly arranged on the second mounting structure 520, and the second mounting structure 520 is fixedly arranged on the fixing device 300.

[0088] like Fig. 9As shown, the first mounting structure 510 is mounted on the rod-shaped fixing device 300, and the mounting position along the height direction of the fixing device 300 is adjustable. The first mounting structure 510 is provided with a rotating part, and the rotating part is connected to the antenna device 100. The antenna device 100 can be rotated along the pitch direction relative to the fixing device 300. The inclination angle of the antenna device 100 can be adjusted by adjusting the rotating part, so as to adjust the inclination angle of the signal transmitted by the antenna device 100 according to actual conditions.

[0089] Furthermore, the second mounting structure 520 can be clamped on the rod-shaped fixture 300, and the installation height of the second mounting structure 520 on the fixture 300 can be adjusted. Specifically, the second mounting structure 520 can be set as a clamping claw structure, or the second mounting structure 520 can be set as a structure with a mounting sleeve and a tightening member, the mounting sleeve is set on the fixture 300, and the tightening member passes through the mounting sleeve and tightens to the fixture 300. Of course, the second mounting structure 520 can also be other structural forms, which are determined according to actual conditions and will not be described in detail here. In other optional embodiments, the fixture 300 can also be implemented by using rod-shaped facilities near the control area, such as electric poles and street light poles.

[0090] In this embodiment, the installation angle of the antenna device 100 relative to the fixing device 300 can be adjusted. For example, the antenna device 100 can be rotated relative to the fixing device 300 along the pitch direction according to actual needs to adjust the transmission direction of the antenna device 100, thereby improving the interference effect.

[0091] In this embodiment, the control device 200 can be fixedly mounted on the fixing device 300 through the second mounting structure 520, and the antenna device 100 can be rotatably mounted on the fixing device 300 through the first mounting structure 510. After the antenna device 100 is adjusted to a suitable angle, the antenna device 100 is fixed to the fixing device 300, and then the aircraft countermeasure device can start to perform interference work. Since the coverage range of the interference signal emitted by the antenna device 100 is flat, it can form an effect similar to a "signal wall", which is convenient for protecting the control area.

[0092] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided in this application is within the scope of protection of this invention and will not be described in detail here.

[0093] The antenna device and aircraft countermeasure equipment provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. An antenna device, characterized in that: The antenna device comprises an outer shell (100a) and a directional antenna component, wherein the directional antenna component is arranged in the outer shell (100a), and the directional antenna component is used to transmit signals; A first effective coverage angle of the signal projected on the first plane is smaller than a second effective coverage angle of the signal projected on the second plane; The first plane is perpendicular to the second plane, the first plane is parallel to the length direction of the antenna device, and the first plane and the second plane are both perpendicular to the radiation surface (100a1) of the outer shell (100a).

2. The antenna device according to claim 1, characterized in that The directional antenna assembly comprises: A reflective plate (140) provided with a mounting frame (160); An antenna (150), the antenna (150) being arranged on the mounting frame (160), and a gap being provided between the antenna and the reflection plate (140); The antenna (150) is an omnidirectional antenna, and the antenna (150) is located between the radiation surface (100a1) and the reflection plate (140).

3. The antenna device according to claim 2, characterized in that Along the length direction of the antenna (150), at least part of the antenna (150) has one end disposed on the outer shell (100a) and the other end disposed on the mounting frame (160).

4. The antenna device according to claim 2, characterized in that: The antenna (150) is a cylindrical antenna, and the extension direction of the cylindrical antenna is parallel to the length direction of the radiation surface (100a1).

5. The antenna device according to claim 2, characterized in that: There are a plurality of antennas (150), and the plurality of antennas (150) are distributed at intervals in the width direction of the reflection plate (140).

6. The antenna device according to any one of claims 2 to 5, characterized in that: The mounting frame (160) comprises: A connecting substrate (161) used for connecting to the reflecting plate (140); A clamping portion (163) is arranged on a side of the connection substrate (161) facing away from the reflection plate (140), and the clamping portion (163) is used to clamp the antenna (150); A supporting portion (162), one end of the supporting portion (162) being connected to the connecting substrate (161), and the other end of the supporting portion (162) being connected to the clamping portion (163).

7. The antenna device according to claim 6, characterized in that: At least one of the clamping portion (163) and the supporting portion (162) is an insulating elastic member.

8. The antenna device according to claim 6, characterized in that: The clamping portion (163) has an opening arranged towards the radiation surface (100a1), and both sides of the opening of the clamping portion (163) are elastic structures.

9. The antenna device according to any one of claims 2 to 5, characterized in that: The distance between the center of the cross section of the antenna (150) and the reflector (140) is (1 / 4)*λ, where λ is the wavelength of the frequency band corresponding to the signal emitted by the antenna (150).

10. The antenna device according to any one of claims 2 to 5, characterized in that: The outer shell (100a) comprises an outer shell (120), a first end cover (130) and a second end cover (110), wherein the first end cover (110) and the second end cover (130) are respectively arranged at two ends of the outer shell (120) in a length direction, and one end of the antenna (150) is arranged at one of the first end cover (110) and the second end cover (130); The reflection plate (140), the mounting frame (160) and the antenna (150) are located in a space enclosed by the housing (120), the first end cover (130) and the second end cover (110).

11. An aircraft countermeasure device, characterized in that: The aircraft countermeasure device comprises the antenna device (100) according to any one of claims 1 to 10.

12. The aircraft countermeasure device according to claim 11, characterized in that: The aircraft countermeasure device further comprises a mounting device (500) and a fixing device (300); the antenna device (100) is rotatably mounted on the fixing device (300) via the mounting device (500).

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