Interference antenna and equipment

Abstract

The invention discloses an interference antenna and equipment. Comprising a fixed seat, a feed assembly and at least one group of radiation assemblies, the radiation assemblies are arranged on the fixed seat, and the feed assembly is connected between the fixed seat and the radiation assemblies and used for feeding the radiation assemblies; the radiation assembly comprises a receiving part and an emitting part which are arranged in pairs, the receiving part is used for receiving signals, and the emitting part is used for emitting interference signals. According to the invention, the feed assembly is fixed through the fixing seat, so that the stability and reliability of the radiation assembly are ensured; the radiation assembly comprises the receiving part and the transmitting part which are arranged in pairs, signals are received through the receiving part, and interference signals are transmitted through the transmitting part, so that receiving and transmitting of the signals are processed separately, mutual influence during signal receiving and transmitting can be avoided, and the efficiency and accuracy of signal receiving and transmitting are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of jamming antennas, and in particular to a jamming antenna and a device. Background Art

[0002] With the continuous advancement and innovation of science and technology, the application of jamming antennas in various fields is constantly expanding and upgrading. For example, in the field of drones, with the rapid development and popularization of drone technology, drones are increasingly used in civilian fields, such as aerial photography, agriculture, logistics, etc. However, the disorderly flight of drones and potential safety hazards have also attracted widespread attention. Jamming antennas can be used for drone traffic management to prevent drones from colliding with other aircraft and protect public safety. At the same time, they can also be used to prevent drones from invading privacy, especially in sensitive areas such as airports and around important facilities. In the field of civil communications, jamming antennas can be used to protect important communication facilities from malicious interference. For example, in communication systems in key infrastructure such as electricity, transportation, and medical fields, jamming antennas can detect and resist potential interference signals to ensure smooth and secure communications.

[0003] However, the existing interference antennas usually implement both signal reception and transmission through the same unit, which results in low efficiency and poor accuracy in signal reception and transmission of the interference antenna. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a jamming device to solve the problem of low efficiency and poor accuracy in receiving and sending signals by jamming antennas.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is to provide an interference device, including a fixing seat, a feeding component and at least one group of radiation components, the radiation component is arranged on the fixing seat, the feeding component is connected between the fixing seat and the radiation component, and is used to feed the radiation component; the radiation component includes a receiving element and a transmitting element arranged in pairs, the receiving element is used to receive signals, and the transmitting element is used to transmit interference signals.

[0006] In some embodiments, the receiving component and the transmitting component have the same shape, and the receiving component and the transmitting component are symmetrically arranged with respect to the axial center line of the fixing base.

[0007] In some embodiments, the receiving member includes a mounting portion, a side portion and a gradient portion, the mounting portion is arranged on the fixing seat, the side portions are arranged on both sides of the mounting portion and extend in a direction away from the fixing seat, the side portions are perpendicular to the mounting portion, the gradient portion is arranged on the inner side of the side portion, and the size of the gradient portion gradually increases from one end adjacent to the mounting portion to an end away from the mounting portion.

[0008] In some embodiments, the mounting portion of the receiving element and the mounting portion of the emitting element are an integral structure, and the gradient portion of the receiving element and the gradient portion of the emitting element are arranged at intervals.

[0009] In some embodiments, the length of the gradient portion is greater than the length of the side portion, and the gradient portion is away from one end of the mounting portion and extends out of the side portion.

[0010] In some embodiments, an arc groove is provided on the side of the mounting portion away from the fixing seat.

[0011] In some embodiments, the fixing base is conical, and the diameter of an end adjacent to the radiation component is smaller than the diameter of an end away from the radiation component.

[0012] In some embodiments, the feeding assembly includes a feeding line and a feeding mounting assembly, one end of the feeding mounting assembly is arranged on the fixing seat, and the other end is arranged on the radiating assembly, the feeding line is passed through the feeding mounting assembly, and is respectively connected to the fixing seat and the radiating assembly.

[0013] In some embodiments, a through hole is provided on the side portion, and the feeder line is passed through the through hole. After the feeder line passes through the side portion of the receiving element or the transmitting element in the through hole, it is connected to the corresponding gradient portion of the transmitting element or the gradient portion of the receiving element.

[0014] The present application also provides an interference device, comprising a plurality of the interference antennas described above.

[0015] The beneficial effects of the present application are as follows: in the present application, the feeding assembly is fixed by a fixing base, thereby ensuring the stability and reliability of the radiating assembly; the radiating assembly includes a receiving element and a transmitting element arranged in pairs, the receiving element receives the signal, and the transmitting element sends the interference signal, which separates the reception and transmission of the signal, thereby avoiding mutual influence during signal reception and transmission, and ensuring the efficiency and accuracy of signal reception and transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram according to an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of a top view structure according to an embodiment of the present application;

[0018] Figure 3 is a front structural schematic diagram according to an embodiment of the present application;

[0019] Figure 4 is a schematic diagram of a side view structure according to an embodiment of the present application;

[0020] Figure 5 is a schematic structural diagram of a fixing base according to an embodiment of the present application;

[0021] Figure 6 is a schematic structural diagram of a radiation component according to an embodiment of the present application;

[0022] Figure 7 is a schematic diagram of a top view of a radiation component according to an embodiment of the present application;

[0023] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure in the AA direction;

[0024] Fig. 9 is a schematic side view of the structure of a radiation component according to an embodiment of the present application;

[0025] Fig.10 yes Fig. 9 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0026] Fig.11 It is a schematic diagram of the simulation result of the standing wave at the port of the interference device according to an embodiment of the present application;

[0027] Fig.12 It is a schematic diagram of the simulation result of interference device isolation according to an embodiment of the present application;

[0028] Fig.13 is a 3D directional pattern of a first interference antenna according to an embodiment of the present application;

[0029] Fig.14 is an azimuth plane pattern of a first interfering antenna according to an embodiment of the present application;

[0030] Fig.15 is a first interference antenna elevation plane pattern according to an embodiment of the present application;

[0031] Fig.16 This is a schematic diagram of the polarization discrimination rate of the azimuth plane of the first interfering antenna according to an embodiment of the present application;

[0032] Fig.17 This is a schematic diagram of the polarization discrimination rate of the first interference antenna in the elevation plane according to an embodiment of the present application;

[0033] Fig.18 is a 3D directional pattern of a second interference antenna according to an embodiment of the present application;

[0034] Fig.19 is the azimuth plane pattern of the second interference antenna according to an embodiment of the present application;

[0035] Fig. 20 is the elevation plane pattern of the second interference antenna according to an embodiment of the present application;

[0036] Fig.21 It is a schematic diagram of the polarization discrimination rate of the azimuth plane of the second interference antenna according to an embodiment of the present application;

[0037] Fig. 22 This is a schematic diagram of the polarization discrimination rate of the elevation plane of the second interference antenna according to an embodiment of the present application;

[0038] Fig.23 is a 3D pattern of a third interference antenna according to an embodiment of the present application;

[0039] Fig.24 is the azimuth plane pattern of the third interference antenna according to an embodiment of the present application;

[0040] Fig.25 is the elevation plane pattern of the third interference antenna according to an embodiment of the present application;

[0041] Fig.26 It is a schematic diagram of polarization discrimination rate of the azimuth plane of the third interference antenna according to an embodiment of the present application;

[0042] Fig. 27 It is a schematic diagram of the polarization discrimination rate of the elevation plane of the third interference antenna according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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 the field without creative work are within the scope of protection of this application.

[0044] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0047] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which this application can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0048] Figure 1-Figure 10 An embodiment of the interference antenna of the present application is shown, including a fixing base 1, a feeding component 2 and at least one group of radiation components 3, the radiation components 3 are arranged on the fixing base 1, the feeding component 2 is connected between the fixing base 1 and the radiation components 3, and is used to feed the radiation components 3; the radiation components 3 include a receiving element 31 and a transmitting element 32 arranged in pairs, the receiving element 31 is used to receive signals, and the transmitting element 32 is used to transmit interference signals.

[0049] In the present application, the feeding component 2 is fixed by the fixing base 1, thereby ensuring the stability and reliability of the radiating component 3; the radiating component 3 includes a receiving component 31 and a transmitting component 32 arranged in pairs, and the signal is received by the receiving component 31, and the interference signal is sent by the transmitting component 32, which separates the reception and transmission of the signal, thereby avoiding mutual influence during signal reception and transmission, and ensuring the efficiency and accuracy of signal reception and transmission.

[0050] In some embodiments, Figure 1-Figure 5 As shown, the fixing base 1 is tapered, and the diameter of the end adjacent to the radiation component 3 is smaller than the diameter of the end away from the radiation component 3. This facilitates the fixing base 1 to firmly fix the radiation component 3.

[0051] The diameter of the end of the fixing base 1 adjacent to the radiation component 3 is 30 mm, the diameter of the end of the fixing base 1 away from the radiation component 3 is 70 mm, and the height of the fixing base 1 is 30 mm.

[0052] In some embodiments, Figure 1-Figure 5 As shown, the feeding assembly 2 includes a feeding line 22 and a feeding mounting member 21. One end of the feeding mounting member 21 is arranged on the fixing base 1, and the other end is arranged on the radiation assembly 3. The feeding line 22 is passed through the feeding mounting member 21 and is respectively connected to the fixing base 1 and the radiation assembly 3.

[0053] In some embodiments, Figure 5-Figure 10 As shown, the radiation component 3 can be an integrated structure, or the receiving component 31 and the transmitting component 32 can be processed separately and then assembled into the radiation component 3. The radiation component 3 has a length of 45 mm and a width of 26 mm.

[0054] In some embodiments, Figure 5-Figure 10 As shown, the receiving member 31 and the emitting member 32 have the same shape. The receiving member 31 and the emitting member 32 are symmetrically arranged with respect to the axial center line of the fixing seat 1 .

[0055] In some embodiments, Figure 5-Figure 10 As shown, the receiving member 31 includes a mounting portion 311, a side portion 312 and a gradient portion 313. The mounting portion 311 is arranged on the fixing seat 1, the side portions 312 are arranged on both sides of the mounting portion 311 and extend in a direction away from the fixing seat 1, the side portions 312 are perpendicular to the mounting portion 311, and the gradient portion 313 is arranged on the inner side of the side portion 312. The size of the gradient portion 313 gradually increases from one end adjacent to the mounting portion 311 to the end away from the mounting portion 311.

[0056] In some embodiments, Figure 5-Figure 10 As shown, the mounting parts 311 of the receiving component 31 and the transmitting component 32 are an integrated structure, and the gradient parts 313 of the receiving component 31 and the transmitting component 32 are arranged at intervals.

[0057] In some embodiments, Figure 6 and Figure 8 As shown, the gradual change portion 313 is tapered, thereby concentrating the radiation energy and enhancing the radiation effect.

[0058] In some embodiments, Figure 6 and Figure 8 As shown, the side of the gradual portion 313 away from the side portion 312 is set as an arc-shaped edge 315.

[0059] In some embodiments, Figure 6 and Figure 8 As shown, the length of the gradient portion 313 is greater than the length of the side portion 312 , so that the gradient portion 313 is away from one end of the mounting portion 311 and extends from one end of the side portion 312 away from the mounting portion 311 .

[0060] In some embodiments, Figure 6 and Figure 8 As shown, the end portion of the gradual portion 313 extending out of one end of the side portion 312 is arc-shaped.

[0061] In some embodiments, Figure 7 and Fig.10 As shown, an arc groove 314 is provided on the side of the mounting portion 311 away from the fixing seat 1 .

[0062] In some embodiments, Fig.10 As shown, a through hole 316 is provided on the side portion 312, and a feeder line 22 is passed through the through hole 316. The feeder line 22 passes through the side portion 312 of the receiving element 31 or the transmitting element 32 in the through hole 316, and then connects with the corresponding gradient portion 313 of the transmitting element 32 or the receiving element 31.

[0063] The jamming antenna can implement jamming in a wider airspace. The jamming airspace can be switched by replacing the antenna (keeping the system fixed interface) or changing the antenna installation direction and polarization. The jamming antenna has a wide operating frequency band (12GHz-18GHz) and a relative bandwidth of 40%. The antenna beam width is wide and the low elevation angle gain requirement is high.

[0064] Based on the above-mentioned jamming antenna, the present application further provides a jamming device, which includes a plurality of the above-mentioned jamming antennas. Multiple jamming devices can also be provided, and the setting method of the jamming devices is the same.

[0065] The jamming device includes a first jamming antenna, a second jamming antenna and a third jamming antenna. The structures of the first jamming antenna, the second jamming antenna and the third jamming antenna are the same as the above jamming antenna structures, and the difference is the size, azimuth angle and pitch angle. The installation angle of the jamming antenna can be adjusted as needed.

[0066] The antenna beam range (azimuth × elevation) of the first interference antenna is ≥120°×60°, and the size of the first interference antenna is 70 mm (azimuth plane) × 70 mm (elevation plane) × 76 mm.

[0067] The antenna beam range (azimuth × elevation) of the second interference antenna is ≥90°×80°, and the size of the second interference antenna is 100 mm (azimuth plane) × 70 mm (elevation plane) × 72 mm.

[0068] The antenna beam range (azimuth × elevation) of the third interference antenna is ≥ 90° × 90°, and the size of the third interference antenna is 44 mm (azimuth plane) × 44 mm (elevation plane) × 62 mm.

[0069] The distance between the first interference antenna, the second interference antenna and the third interference antenna is 400mm. The transmit-receive isolation between the first interference antenna, the second interference antenna and the third interference antenna is ≥70dB, and the interference equipment operates in the frequency band of 12GHz to 18GHz. The pulse width range is 100ns to 1ms. The repetition frequency range is 0.1kHz to 800kHz.

[0070] According to the above-mentioned jammer, the signal radiated by the seeker can be detected, sorted, measured and identified; the corresponding jammer signal can be quickly generated according to the detected signal to interfere with the seeker.

[0071] The interference patterns of the interference equipment include one or more of distance drag interference, speed drag interference, multiple false target interference, noise interference, Doppler noise and / or coherent suppression. The interference pattern and parameter setting range shall not be less than the following requirements:

[0072] Distance dragging interference: dragging range: 2us~50us, dragging cycle: 0.25s~10s, maximum dragging multiplicity: ≥16, the starting distance of multiple dragging is 0m~100m.

[0073] Speed ​​drag interference: drag range ±(0~200)kHz, maximum drag multiplicity: ≥16, drag cycle: 0.25s~10s, multiple drag-induced initial spacing 0Hz~200Hz.

[0074] Speed ​​(Doppler) flicker interference: fd1 = ± (100Hz ~ 10kHz), fd2 = ± (100Hz ~ 10kHz), two channels change independently and randomly, the change period is 20ms ~ 2s;

[0075] Multiple false target interference: ≥16, all moving in the direction of approaching or moving away, or both, and the speed and distance information are related.

[0076] Dense false targets: distance coverage: 300m ~ 7500m, Doppler coverage: ± (5 ~ 100) kHz, the number of false targets is not less than 50;

[0077] Noise interference: The interference bandwidth is 0.1MHz~300MHz; intermittent noise interference, for noise blocking interference or noise targeting interference, the intermittent frequency is 0.5Hz~50Hz.

[0078] Doppler noise: interference bandwidth 0.01MHz~10MHz;

[0079] Coherent suppression: Sample copy time: 20ns~2ms, sample copy mode can flexibly select interception time, or adopt jitter interception mode. Interference bandwidth selection range 0.01MHz~10MHz.

[0080] The interference pattern of the interference device also includes a combined interference pattern, which includes one or more of distance deception, speed deception, distance + speed deception and noise interference. The combined interference pattern is as follows:

[0081] Distance deception: distance (multiple) false targets, distance dragging interference;

[0082] Speed ​​deception: speed dragging, multiple speed dragging interference (no less than 16 types), speed flickering interference, etc.

[0083] Distance + Speed ​​Deception: Distance-Speed ​​Combination Mode;

[0084] Noise interference: targeted noise interference, blocking noise interference, and intermittent noise interference.

[0085] The jammer has a repetition frequency tracking function, which can predict the pulse arrival time and automatically set the time window. It can also adopt fixed time window and other modes. The reconnaissance time window can be set from 0.2us to 10us, and the jamming time window can be set from 10us to 200us. The reconnaissance / jamming (switching) time is no more than 0.5us.

[0086] The jamming reaction time is fast, the reconnaissance / jamming time window is reasonably set, and there is a good interception strategy for multiple seeker cover pulses and detection pulses. It can also implement multi-target jamming on multiple seeker signals within the same instantaneous bandwidth and different instantaneous bandwidths (cover pulses in overlapping and non-overlapping conditions, frequency diversity signals, and agile frequency signals, pulse-to-pulse frequency hopping signals and other complex signals), and prevent the seeker from missing interference waveforms, cover pulses, etc.

[0087] The simulation results of the standing wave at the interference device port are as follows: Fig.11 As shown in the figure, within the working frequency range (12GHz-18GH), the standing wave of the antenna port is less than 1.5. The simulation results of the interference device isolation are shown in the figure. Fig.12 As shown, within the working frequency band (12GHz-18GH), the port isolation of the interference device is greater than 72dB.

[0088] Figure 13-Figure 17 Schematic diagrams of the 3D directional pattern, azimuth directional pattern, elevation directional pattern, azimuth polarization discrimination rate, and elevation polarization discrimination rate of the first interference antenna respectively; Figure 14-17 The corresponding results at 12GHz, 13GHz, 14GHz, 15GHz, 16GHz, 17GHz and 18GHz are shown. Figure 13-Figure 17 , we can get the simulation results of the first interference antenna gain in Table 1 and the indicators of the first interference antenna in Table 2.

[0089] Table 1 Simulation results of the first interference antenna gain

[0090]

[0091] Table 2 First interference antenna indicators

[0092]

[0093] Figure 18-Figure 22 They are schematic diagrams of the 3D radiation pattern, azimuth radiation pattern, elevation radiation pattern, azimuth polarization discrimination rate and elevation polarization discrimination rate of the second interference antenna respectively. Figure 19-22 The corresponding results at 12GHz, 13GHz, 14GHz, 15GHz, 16GHz, 17GHz and 18GHz are shown. Figure 18-Figure 22 , we can get the simulation results of the second interference antenna gain in Table 3 and the indicators of the second interference antenna in Table 4.

[0094] Table 3 Second interference antenna gain simulation results

[0095]

[0096]

[0097] Table 4 Second interference antenna indicators

[0098]

[0099] Figure 23-Figure 27 They are schematic diagrams of the 3D radiation pattern, azimuth plane radiation pattern, elevation plane radiation pattern, azimuth plane polarization discrimination rate and elevation plane polarization discrimination rate of the third interference antenna respectively. Figure 24-Figure 27 The corresponding results at 12GHz, 13GHz, 14GHz, 15GHz, 16GHz, 17GHz and 18GHz are shown. Figure 23-Figure 27 , we can obtain the simulation results of the third interference antenna gain in Table 5 and the indicators of the third interference antenna in Table 6.

[0100] Table 5 Simulation results of the third interference antenna gain

[0101]

[0102] Table 6 Third interference antenna indicators

[0103]

[0104]

[0105] It can be seen that the present application discloses an interference antenna and equipment, in which the interference antenna fixes the feeding component through a fixing base, thereby ensuring the stability and reliability of the radiation component; the radiation component includes a receiving element and a transmitting element arranged in pairs, and the signal is received by the receiving element, and the interference signal is sent by the transmitting element, which separates the reception and transmission of the signal, thereby avoiding mutual influence during signal reception and transmission, and ensuring the efficiency and accuracy of signal reception and transmission.

[0106] The above are merely embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structural transformations made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An interference antenna, characterized in that: It includes a fixing seat, a feeding component and at least one group of radiating components, wherein the radiating components are arranged on the fixing seat, and the feeding component is connected between the fixing seat and the radiating components for feeding the radiating components; the radiating components include a receiving element and a transmitting element arranged in pairs, wherein the receiving element is used to receive signals, and the transmitting element is used to transmit interference signals.

2. The jamming antenna according to claim 1, characterized in that: The receiving component and the transmitting component have the same shape, and are symmetrically arranged with respect to the axial center line of the fixing seat.

3. The jamming antenna according to claim 2, characterized in that: The receiving member includes a mounting portion, a side portion and a gradient portion, wherein the mounting portion is arranged on the fixing seat, the side portions are arranged on both sides of the mounting portion and extend in a direction away from the fixing seat, the side portions are perpendicular to the mounting portion, and the gradient portion is arranged on the inner side of the side portion, and the size of the gradient portion gradually increases from one end adjacent to the mounting portion to one end away from the mounting portion.

4. The jamming antenna according to claim 3, characterized in that: The mounting portion of the receiving element and the mounting portion of the emitting element are an integrated structure, and the gradient portion of the receiving element and the gradient portion of the emitting element are arranged at intervals.

5. The jamming antenna according to claim 3, characterized in that: The length of the gradient portion is greater than the length of the side portion, and the gradient portion is away from one end of the mounting portion and extends out of the side portion.

6. The jamming antenna according to claim 3, characterized in that: An arc groove is arranged on the side of the mounting portion away from the fixing seat.

7. The jamming antenna according to claim 3, characterized in that: The fixing seat is conical, and the diameter of one end adjacent to the radiation component is smaller than the diameter of one end away from the radiation component.

8. The jamming antenna according to claim 7, characterized in that: The feeding assembly includes a feeding line and a feeding mounting member, one end of the feeding mounting member is arranged on the fixing seat, and the other end is arranged on the radiation assembly. The feeding line is passed through the feeding mounting member and is respectively connected to the fixing seat and the radiation assembly.

9. The jamming antenna according to claim 8, characterized in that: The side portion is provided with a through hole, the feeder is passed through the through hole, and the feeder passes through the side portion of the receiving element or the transmitting element in the through hole and then is connected to the corresponding gradient portion of the transmitting element or the gradient portion of the receiving element.

10. A jamming device, characterized in that: It comprises a plurality of interference antennas as described in any one of claims 1-9.

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