Multi-channel sweep frequency noise unmanned aerial vehicle jammer

Abstract

The utility model discloses a multichannel sweep frequency noise unmanned aerial vehicle jammer. One or more devices of a sweep frequency signal source, a multichannel combiner, a power attenuator, a power amplifier, a transmitting antenna and a power supply module are arranged in an unmanned aerial vehicle jammer device case. The sweep frequency signal source is in signal connection with the multi-channel combiner through a radio frequency line, and the multi-channel combiner is used for synthesizing signals of different signal sources; the multi-channel combiner is connected with the power attenuator through a radio frequency line; the power amplifier is connected with the power attenuator through a radio frequency line; the transmitting antenna is connected with the power amplifier through a radio frequency line; the output end of the power module is connected with each level of equipment, and the input end is externally connected with commercial power. The multi-channel sweep frequency signals are synthesized through the combiner, and the interference effect on the unmanned aerial vehicle is improved by increasing or decreasing the number of the combined signal sources. And the initial power of the signal source using the voltage-controlled oscillator is relatively high, and a low-power and low-cost power amplifier can be selected, so that the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of security equipment, and specifically relates to a multi-channel sweep frequency noise UAV jammer. Background Art

[0002] Drone jammers are devices designed to disrupt the normal operation of drones. They transmit jamming signals that interfere with the drone's navigation, control, and communication systems, causing it to lose control or malfunction. Drone jammers are widely used in a variety of fields, including but not limited to airport security, large-scale event security, the military, government agencies, and private homes.

[0003] Common drone jamming methods mostly involve suppressive noise. Noise generation methods can be categorized as white noise, swept-frequency noise, and modulated noise. White and modulated noise offer better jamming effects, but both white noise and modulated noise have high power generation costs. Swept-frequency noise equipment is less expensive and has higher initial noise power, but its jamming effectiveness is poor, making it unsuitable for large-scale production and deployment.

[0004] Currently, common white noise jammers require multiple amplifiers to amplify the signal due to the low initial power of the background noise they generate. However, the signal is prone to self-oscillation after multiple stages of amplification, resulting in high production and debugging costs. Modulated noise jammers can achieve good jamming effects using low power, but their generation method is too complex, requiring the use of dedicated chips and special circuit boards. They can only interfere with drones using the same modulation method as the modulated noise, resulting in high iteration and material costs. Swept frequency noise mostly uses a voltage-controlled oscillator to generate signals. This method has low material, production, and debugging costs, but its interference principle makes its jamming effect inferior to that of white noise and modulated noise. Therefore, existing noise jammers have problems such as poor jamming effect and high cost. Utility Model Content

[0005] The purpose of the invention of this utility model is to provide a multi-channel sweep frequency noise UAV jammer to address the above-mentioned problems, hoping to improve the problems of high cost and poor interference effect of existing noise jammers.

[0006] The technical solution adopted by the utility model is as follows: a multi-channel swept-frequency noise drone jammer, the drone jammer equipment is mounted on the ground, and the equipment chassis is provided with one or more devices including a swept-frequency signal source, a multi-channel combiner, a power attenuator, a power amplifier, a transmitting antenna and a power module; the swept-frequency signal source is connected to the multi-channel combiner through a radio frequency line, the swept-frequency signal source is used to generate an interference signal of the corresponding frequency band, and the multi-channel combiner is used to synthesize signals from different signal sources; the multi-channel combiner is connected to the power attenuator through a radio frequency line, and the power attenuator is used to attenuate the power of the output signal of the multi-channel combiner; the power amplifier is connected to the power attenuator through a radio frequency line, and the power amplifier is used to amplify the noise signal attenuated by the power attenuator; the transmitting antenna is connected to the power amplifier through a radio frequency line, and the transmitting antenna is used to transmit signals; the output end of the power module is connected to the equipment at each level, the power module is used to provide power for the equipment, and the input end of the power module is externally connected to the mains.

[0007] Furthermore, there are multiple sweep frequency signal sources, and the signal source circuit board is encapsulated in a No. 1 aluminum alloy metal cavity. An SMA-K radio frequency interface is provided on one side of the No. 1 aluminum alloy metal cavity. The SMA-K radio frequency interface is used to output signals and connect to the multi-channel combiner; the No. 1 aluminum alloy metal cavity is connected to the bottom plate of the device chassis by screws.

[0008] Furthermore, the multi-channel combiner is encapsulated in a No. 2 aluminum alloy metal cavity, an SMA-K radio frequency interface is provided on one side of the No. 2 aluminum alloy metal cavity, and the No. 2 aluminum alloy metal cavity is connected to the bottom plate of the device chassis by screws.

[0009] Furthermore, the power attenuator is a digitally adjustable attenuator, which is used to flexibly adjust the final transmission power; and the power attenuator is encapsulated in a No. 3 aluminum alloy metal cavity, and an SMA-K radio frequency interface is provided on one side of the No. 3 aluminum alloy metal cavity, and the power attenuator is connected to the power amplifier through the SMA-K radio frequency interface.

[0010] Furthermore, the power amplifier is encapsulated in a No. 4 aluminum alloy metal cavity, and the input and output interfaces of the No. 4 aluminum alloy metal cavity are both provided with SMA radio frequency interfaces. The No. 4 aluminum alloy metal cavity is connected to the bottom plate of the device chassis by screws, and the gap between the No. 4 aluminum alloy metal cavity and the chassis is filled with thermal grease, which is used for heat dissipation; the power amplifier is connected to the transmitting antenna through an SMA / N-KFK type output interface.

[0011] Furthermore, the transmitting antenna is an omnidirectional fiberglass antenna, and the transmitting antenna is connected to the outer side wall of the device chassis through threads.

[0012] Furthermore, the output end of the power module is respectively connected to the No. 1 aluminum alloy metal cavity, the No. 2 aluminum alloy metal cavity, the No. 3 aluminum alloy metal cavity and the No. 4 aluminum alloy metal cavity to supply power, and the input end of the power module is connected to the mains power, and the power module converts the mains AC power into low-voltage DC power used by equipment at all levels.

[0013] Furthermore, the No. 1 aluminum alloy metal cavity, the No. 2 aluminum alloy metal cavity, the No. 3 aluminum alloy metal cavity and the No. 4 aluminum alloy metal cavity are independently provided and can be disassembled.

[0014] Furthermore, the frequency sweep signal source is provided with a voltage controlled oscillator, which is used to change the signal output frequency.

[0015] Furthermore, the UAV jammer device chassis is an integrated aluminum alloy shell structure, and the shell is a dustproof, waterproof, and corrosion-resistant structure. A waterproof rubber ring is provided at the line interface inside the device chassis, and the waterproof rubber ring is used to isolate the line interface.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] This new technology combines multiple swept-frequency signals through a combiner, achieving a jamming effect similar to natural white noise. By increasing or decreasing the number of combined signal sources, the jamming effect against drones is enhanced. Furthermore, the higher initial power of the signal source using a voltage-controlled oscillator allows for the selection of low-power and low-cost power amplifiers, thus reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the UAV jammer of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the frequency sweep signal source cavity of the present utility model;

[0020] Figure 3 This is a schematic diagram of the cavity structure of the multi-channel combiner of the present utility model;

[0021] Figure 4 This is a schematic diagram of the cavity structure of the power attenuator of the present utility model;

[0022] Figure 5 This is a schematic diagram of the power amplifier cavity structure of the present utility model;

[0023] Figure 6 This is a schematic diagram of the omnidirectional antenna structure of the present utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the power module of the utility model;

[0025] Figure 8 This is a schematic diagram of the connection between the power module and the cavity of the utility model;

[0026] Figure 9 This is a schematic diagram of the chassis appearance of the device of this utility model. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Example 1

[0030] like Figure 1 As shown, one embodiment of the present invention is a multi-channel sweep frequency noise drone jammer, the drone jammer equipment is set on the ground, and the equipment chassis is provided with one or more devices including a sweep frequency signal source, a multi-channel combiner, a power attenuator, a power amplifier, a transmitting antenna and a power supply module; the sweep frequency signal source is connected to the multi-channel combiner through a radio frequency line, and the sweep frequency signal source is used to generate interference signals of corresponding frequency bands, and these signals have a sweep frequency characteristic, that is, the frequency of the signal will change continuously within a certain range, wherein the number of sweep frequency signal sources can be configured according to actual needs to achieve multi-channel interference. Each sweep frequency signal source can independently generate interference signals of different frequency bands or different sweep frequency rates.

[0031] A multi-channel combiner is used to synthesize signals from different signal sources, that is, to combine the output signals of multiple swept-frequency signal sources into one signal for output; through a multi-channel combiner, interference signals of different frequency bands or different swept-frequency rates can be superimposed, thereby broadening the spectrum coverage of the interference signal and improving the interference effect.

[0032] The multi-channel combiner is connected to the power attenuator via a radio frequency line. The power attenuator is used to attenuate the power of the output signal of the multi-channel combiner to ensure that the signal can be safely input into the power amplifier. The presence of the power attenuator can prevent the signal power from being too high and damaging the power amplifier or transmitting antenna, and can also adjust the power of the output signal as needed.

[0033] The power amplifier is connected to the power attenuator through a radio frequency line. The power amplifier is used to amplify the noise signal after attenuation by the power attenuator to improve the signal transmission power and interference effect; the power amplifier has the characteristics of high gain and low noise, which can ensure that the interference signal maintains sufficient strength and stability during transmission.

[0034] The transmitting antenna is connected to the power amplifier via an RF cable and is used to transmit signals. The power module's output is connected to each level of equipment, providing power to the equipment. Its input is connected to an external mains supply. The power module should provide stable output voltage and current to ensure proper operation of each level of equipment. Furthermore, it should include safety features such as overload and short-circuit protection to enhance system reliability and security.

[0035] Its working principle is as follows: the swept frequency signal source is used to generate a swept frequency signal of the corresponding frequency band and transmit it to the multi-channel combiner through the RF line. The multi-channel combiner is used to combine the signals of the signal source into one channel for output. The power attenuator is used to adjust the signal power so that it can be safely input into the power amplifier. The power amplifier is used to amplify the noise signal. The transmitting antenna is used to transmit the signal to interfere with the target drone. The power module is used to provide power to each level of equipment.

[0036] Thanks to the use of a multi-channel combiner, the drone jammer of this embodiment can synthesize and output sweep signal sources with different sweep rates, thus solving the problem of incomplete spectrum coverage and poor jamming effect caused by a single sweep signal source. At the same time, by adjusting the parameters of the power attenuator and power amplifier, the power and coverage of the jamming signal can be flexibly controlled to meet the jamming requirements in different scenarios.

[0037] Example 2

[0038] like Figure 2 As shown, another embodiment of the present invention is that there are multiple swept frequency signal sources, each signal source can generate an interference signal of the corresponding frequency band, and the signal source circuit board is encapsulated in a No. 1 aluminum alloy metal cavity to shield electromagnetics and improve the anti-interference ability and stability of the equipment; an SMA-K radio frequency interface is provided on one side of the No. 1 aluminum alloy metal cavity, and the SMA-K radio frequency interface is used to output signals and connect to the multi-channel combiner; the No. 1 aluminum alloy metal cavity is connected to the bottom plate of the device chassis by screws.

[0039] The SMA-K RF interface is a high-performance RF connector featuring wide bandwidth, excellent performance, and high reliability. Its aluminum alloy housing connects to the chassis base with screws, ensuring stable installation of the sweep signal generator circuit board and the SMA-K RF interface. The SMA-K RF interface connects to a multi-channel combiner via RF cables for signal transmission and synthesis.

[0040] The swept frequency signal source is used to generate interference signals in the corresponding frequency band. Different swept frequency signal sources use different sweep rates, which can effectively prevent the vector superposition of waves. At the same time, it can ensure the consistency of signal output power, and ultimately ensure the rectangular coefficient of the output signal, thereby improving the uniformity of the spectrum coverage of the interference signal.

[0041] Example 3

[0042] like Figure 3 As shown, another embodiment of the present invention is that the multi-channel combiner is encapsulated in a No. 2 aluminum alloy metal cavity, an SMA-K radio frequency interface is provided on one side of the No. 2 aluminum alloy metal cavity, and the No. 2 aluminum alloy metal cavity is connected to the bottom plate of the device chassis by screws.

[0043] The multi-channel combiner is responsible for combining interference signals from different swept-frequency signal sources to form a wide-spectrum interference signal. Placing the multi-channel combiner in a No. 2 aluminum alloy metal cavity provides electromagnetic shielding and physical protection for the multi-channel combiner.

[0044] Example 4

[0045] like Figure 4 As shown, another embodiment of the present invention is that the power attenuator is a digitally adjustable attenuator, which is used to flexibly adjust the final transmission power; and the power attenuator is encapsulated in a No. 3 aluminum alloy metal cavity, and an SMA-K radio frequency interface is provided on one side of the No. 3 aluminum alloy metal cavity, and the power attenuator is connected to the power amplifier through the SMA-K radio frequency interface.

[0046] A digital variable attenuator is a high-precision power regulation device that can flexibly adjust the signal attenuation as needed, thereby precisely controlling the final transmit power. The integration of a digital variable attenuator provides flexible power regulation and enables precise control of the final transmit power.

[0047] This embodiment provides a UAV jammer system with an integrated digital adjustable attenuator, which has flexible power adjustment function, excellent electromagnetic compatibility and structural stability, and is suitable for occasions requiring precise control of transmission power and jamming effect.

[0048] Example 5

[0049] like Figure 5As shown, another embodiment of the present invention is that the power amplifier is encapsulated in a No. 4 aluminum alloy metal cavity, the input and output interfaces of the No. 4 aluminum alloy metal cavity are both provided with SMA radio frequency interfaces, the No. 4 aluminum alloy metal cavity is connected to the bottom plate of the device chassis by screws, and the gap between the No. 4 aluminum alloy metal cavity and the chassis is filled with thermal grease, and the thermal grease is used for heat dissipation; the power amplifier is connected to the transmitting antenna through an SMA / N-KFK type output interface.

[0050] As a high-performance RF connector, the SMA RF interface features low loss, high frequency stability, and excellent anti-electromagnetic interference capabilities. The SMA RF interface is not only used to connect the power amplifier to the digitally adjustable attenuator and transmitting antenna, but also ensures stable signal transmission. Thermal grease is a highly efficient heat dissipation material with excellent thermal conductivity and stability. Thermal grease is filled in the gap between the No. 4 aluminum alloy metal cavity and the chassis to effectively dissipate the heat generated by the power amplifier and ensure stable operation of the system. The SMA / N-KFK output interface is a high-performance RF output interface with low loss, high frequency stability, and excellent mechanical connection performance. The SMA / N-KFK output interface is used to connect the power amplifier to the transmitting antenna, ensuring that the amplified interference signal can be transmitted to the transmitting antenna in a stable and efficient manner.

[0051] This embodiment fills the gap between the No. 4 aluminum alloy metal cavity and the chassis with thermal grease to effectively dissipate the heat generated by the power amplifier and ensure the stable operation of the system. At the same time, the high-performance connection solution of the SMA RF interface and the SMA / N-KFK output interface ensures stable signal transmission and power amplification.

[0052] Example 6

[0053] like Figure 6 As shown, another embodiment of the present invention is that the transmitting antenna is an omnidirectional fiberglass antenna, and the transmitting antenna is connected to the outer side wall of the device chassis through threads to ensure stable installation and reliable signal transmission.

[0054] The omnidirectional fiberglass antenna is a high-performance transmitting antenna with 360-degree omnidirectional radiation capability. Made of fiberglass, it is lightweight, strong, corrosion-resistant, and offers excellent electromagnetic performance. It transmits the amplified jamming signal at a 360-degree angle, achieving all-around jamming of the target drone.

[0055] The omnidirectional fiberglass antenna features 360-degree omnidirectional radiation, enabling all-around interference against target drones. The threaded connection ensures a secure connection and reliable signal transmission between the transmitting antenna and the chassis, while also facilitating antenna replacement or maintenance.

[0056] Example 7

[0057] like Figure 7-8 As shown, another embodiment of the present invention is that the output end of the power module is respectively connected to the No. 1 aluminum alloy metal cavity, the No. 2 aluminum alloy metal cavity, the No. 3 aluminum alloy metal cavity and the No. 4 aluminum alloy metal cavity for power supply, and the input end of the power module is connected to the mains, and the power module converts the mains AC power into low-voltage DC power used by various levels of equipment.

[0058] The power module uses an AC-DC power supply module. Chambers 1 through 4 each feature a power interface connected to the module's low-voltage DC output, receiving stable power input. This integrated design not only improves power supply efficiency but also simplifies the system structure, enhancing reliability and stability.

[0059] Example 8

[0060] Another embodiment of the present invention is that the No. 1 aluminum alloy metal cavity, the No. 2 aluminum alloy metal cavity, the No. 3 aluminum alloy metal cavity and the No. 4 aluminum alloy metal cavity are independently provided and can be disassembled.

[0061] The drone jammer of this embodiment sets up each device independently and connects signals through a radio frequency interface. When a device is damaged, only a single device needs to be replaced, thereby enhancing the stability of the drone jammer to a certain extent.

[0062] Example 9

[0063] Another embodiment of the present invention is that a voltage-controlled oscillator is provided in the frequency sweep signal source, and the output frequency band can be changed by replacing the voltage-controlled oscillator, and the signal optional frequency band range is 400MHz-8000MHz.

[0064] The realization of the swept frequency signal source depends on the performance and control method of the voltage-controlled oscillator. By controlling the input voltage of the voltage-controlled oscillator, its output frequency can be continuously changed within a certain range, thereby realizing the generation of the swept frequency signal.

[0065] The initial power of the signal source using a voltage-controlled oscillator is high, allowing the selection of low-power and low-cost power amplifiers, thereby reducing the cost of the noise jammer. Furthermore, the system can achieve continuous adjustable frequency sweeping across a wide frequency range of 400MHz to 8000MHz, meeting the needs of various application scenarios and covering a wide frequency band.

[0066] The swept frequency signal source of this embodiment is combined with a voltage-controlled oscillator, and its initial power is relatively large. Therefore, the power and cost required by the power amplifier are relatively small to obtain the required power level.

[0067] Example 10

[0068] like Figure 9 As shown, another embodiment of the present invention is that the UAV jammer device chassis is an integrated aluminum alloy shell structure, and the shell is a dustproof, waterproof and corrosion-resistant structure, and a waterproof rubber ring is provided at the line interface inside the device chassis, and the waterproof rubber ring is used to isolate the line interface.

[0069] The device chassis has a three-proof structure, which can improve the applicability of the drone to a certain extent. The internal circuit interface of the chassis is equipped with a waterproof rubber ring, which will not cause power outages even in extreme environments.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-channel sweep frequency noise drone jammer, the drone jammer equipment chassis is erected on the ground, characterized in that: The UAV jammer equipment chassis is equipped with one or more devices including a sweep frequency signal source, a multi-channel combiner, a power attenuator, a power amplifier, a transmitting antenna, and a power module; The frequency sweep signal source is connected to the multi-channel combiner via a radio frequency line. The frequency sweep signal source is used to generate an interference signal of a corresponding frequency band. The multi-channel combiner is used to synthesize signals from different signal sources. The multi-channel combiner is connected to the power attenuator via a radio frequency line, and the power attenuator is used to attenuate the power of the output signal of the multi-channel combiner; The power amplifier is connected to the power attenuator via a radio frequency line, and the power amplifier is used to amplify the noise signal attenuated by the power attenuator; The transmitting antenna is connected to the power amplifier via a radio frequency line, and the transmitting antenna is used to transmit signals; The output end of the power module is connected to the equipment at each level. The power module is used to provide power to the equipment, and the input end of the power module is externally connected to the mains.

2. A multi-channel swept frequency noise UAV jammer according to claim 1, characterized in that: There are multiple sweep frequency signal sources, and the signal source circuit board is encapsulated in a No. 1 aluminum alloy metal cavity. An SMA-K radio frequency interface is provided on one side of the No. 1 aluminum alloy metal cavity. The SMA-K radio frequency interface is used to output signals and connect to the multi-channel combiner; the No. 1 aluminum alloy metal cavity is connected to the bottom plate of the chassis of the drone jammer equipment through screws.

3. A multi-channel swept frequency noise UAV jammer according to claim 1, characterized in that: The multi-channel combiner is encapsulated in a No. 2 aluminum alloy metal cavity, an SMA-K radio frequency interface is provided on one side of the No. 2 aluminum alloy metal cavity, and the No. 2 aluminum alloy metal cavity is connected to the bottom plate of the chassis of the drone jammer equipment through screws.

4. A multi-channel swept frequency noise UAV jammer according to claim 1, characterized in that: The power attenuator is a digitally adjustable attenuator, which is used to flexibly adjust the final transmission power; and the power attenuator is encapsulated in a No. 3 aluminum alloy metal cavity, and an SMA-K radio frequency interface is provided on one side of the No. 3 aluminum alloy metal cavity, and the power attenuator is connected to the power amplifier through the SMA-K radio frequency interface.

5. A multi-channel swept frequency noise UAV jammer according to claim 1, characterized in that: The power amplifier is encapsulated in a No. 4 aluminum alloy metal cavity. The input and output interfaces of the No. 4 aluminum alloy metal cavity are both provided with SMA radio frequency interfaces. The No. 4 aluminum alloy metal cavity is connected to the bottom plate of the chassis of the drone jammer equipment through screws, and the gap between the No. 4 aluminum alloy metal cavity and the chassis is filled with thermal grease, which is used for heat dissipation; the power amplifier is connected to the transmitting antenna through an SMA / N-KFK type output interface.

6. A multi-channel swept frequency noise UAV jammer according to claim 1, characterized in that: The transmitting antenna is an omnidirectional fiberglass antenna, and the transmitting antenna is connected to the outer side wall of the UAV jammer equipment chassis through threads.

7. A multi-channel swept frequency noise UAV jammer according to any one of claims 1 to 5, characterized in that: The output end of the power module is respectively connected to the No. 1 aluminum alloy metal cavity, the No. 2 aluminum alloy metal cavity, the No. 3 aluminum alloy metal cavity and the No. 4 aluminum alloy metal cavity to supply power, and the input end of the power module is connected to the mains power, and the power module converts the mains AC power into low-voltage DC power used by equipment at all levels.

8. A multi-channel swept frequency noise UAV jammer according to claim 7, characterized in that: The No. 1 aluminum alloy metal cavity, the No. 2 aluminum alloy metal cavity, the No. 3 aluminum alloy metal cavity and the No. 4 aluminum alloy metal cavity are independently arranged and can be disassembled.

9. A multi-channel swept frequency noise UAV jammer according to claim 2, characterized in that: The frequency sweep signal source is provided with a voltage controlled oscillator, which is used to change the signal output frequency.

10. A multi-channel swept frequency noise UAV jammer according to claim 1, characterized in that: The chassis of the drone jammer equipment is an integrated structure of an aluminum alloy shell, and the shell is a dust-proof, waterproof and corrosion-resistant structure. A waterproof rubber ring is provided at the internal line interface of the drone jammer equipment chassis, and the waterproof rubber ring is used to isolate the line interface.

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