A handheld drone jamming device to enhance jamming effect
By using an antenna array with ±45° cross-polarization, the problems of low spectral efficiency and strict polarization matching requirements of existing UAV jamming devices are solved, achieving more efficient jamming effect and wider coverage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU AIRSPACE FALCON SAFETY TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-30
AI Technical Summary
Existing UAV jamming devices use vertically polarized antennas, which cannot transmit orthogonally polarized waves. They have low spectral efficiency and cannot effectively cope with the dual-polarization diversity of UAV image transmission systems. Furthermore, the polarization matching requirements are strict, which leads to the weakening of the jamming signal when the UAV's attitude changes.
The antenna array, which employs a ±45° cross-polarization arrangement, includes a first and a second antenna array. These arrays are cross-arranged and tilted 45° to the left and right with the center line of the mounting plate as a reference, forming an interference signal that includes both horizontal and vertical polarization components. This ensures effective interference even when the polarization direction of the UAV changes.
It improves interference efficiency by more than 30%, enhances anti-countermeasure capabilities, expands coverage by 20% to 50%, and reduces the impact of multipath fading and obstacle blockage in complex environments.
Smart Images
Figure CN224439022U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drone jamming technology, specifically a handheld drone jamming device to enhance jamming effects. Background Technology
[0002] In the field of radio countermeasures technology, handheld drone jamming devices disrupt the remote control and navigation links of drones by emitting jamming signals, thereby achieving countermeasures against drones. In existing technologies, such devices generally employ vertically polarized antennas, using electric field oscillations in a single vertical direction to transmit energy and suppress drone signals.
[0003] Existing products use vertically polarized antennas to transmit energy through electric field oscillations in a single vertical direction, thereby blocking the remote control and navigation links of drones and suppressing signals.
[0004] 1. Vertically polarized antennas only support a single channel and cannot transmit orthogonally polarized waves, resulting in low spectral efficiency.
[0005] 2. If the UAV image transmission system uses dual-polarization diversity, vertical polarization interference can only suppress one of the channels.
[0006] 3. Polarization matching requires strict alignment to achieve a high countermeasure effect.
[0007] When a drone changes attitude during flight, the polarization direction of its receiving antenna may not be completely aligned with the vertical polarization signal on the ground, resulting in polarization mismatch and weakening of the interference signal. Utility Model Content
[0008] To address the shortcomings of existing technologies, this invention provides a handheld drone jamming device that enhances interference effectiveness. It solves the following problems: 1. Vertically polarized antennas only support a single channel, making it impossible to transmit orthogonally polarized waves, resulting in low spectral efficiency. 2. If the drone's image transmission system uses dual-polarization diversity, vertical polarization interference can only suppress one of the polarization signals. 3. Polarization matching requires strict alignment for a high counter-interference effect. When a drone changes attitude during flight, the polarization direction of its receiving antenna may not be perfectly aligned with the ground's vertically polarized signal, causing polarization mismatch and weakening the interference signal.
[0009] This utility model provides the following technical solution: a handheld drone jamming device to enhance jamming effect, including a mounting plate, on which a first antenna array is provided and a second antenna array is provided, the first antenna array and the second antenna array being arranged alternately.
[0010] Preferred technical solution 1: The first antenna array includes a first antenna and a second antenna. The first antenna is set at a 45° angle to the left with respect to the center line of the mounting plate, and the second antenna is set at a 45° angle to the right with respect to the center line of the mounting plate.
[0011] Preferred technical solution 2: The second antenna array includes a third antenna and a fourth antenna. The third antenna is set at a 45° angle to the left with respect to the center line of the mounting plate, and the fourth antenna is set at a 45° angle to the right with respect to the center line of the mounting plate.
[0012] Preferred technical solution 3: The first antenna and the second antenna are at the same height, and the third antenna and the fourth antenna are at the same height.
[0013] Compared with the prior art, this utility model provides a handheld drone jamming device that enhances the jamming effect, which has the following beneficial effects: 1. The antenna mutual interference effect is small. This patent adopts ±45° cross polarization arrangement decoupling technology, which reduces mutual interference energy by 95%.
[0014] 2. Cross-polarized antennas can transmit interference signals containing both horizontal and vertical polarization components, effectively countering UAV signals with varying polarization directions. When the polarization direction of the UAV signal changes, one polarization component in the composite interference signal will always couple well with the UAV receiving antenna, ensuring the stability of the interference effect. Compared to traditional vertically polarized antennas, the interference efficiency can be improved by more than 30% when facing UAV signals with randomly changing polarization directions.
[0015] 3. Regardless of how the drone's attitude changes, the jamming signal can be effectively suppressed, demonstrating strong anti-countermeasure capability.
[0016] 4. High interference efficiency. By reasonably adjusting the signal parameters of the two polarization units of the cross-polarized antenna, a specific polarization radiation mode can be formed, concentrating the interference energy in the effective polarization direction of the UAV receiving antenna and improving the utilization rate of interference energy. Compared with traditional vertically polarized antennas, under the same transmit power, the method of this invention can increase the interference signal power at the UAV receiver by 15% to 30%, thereby significantly enhancing the interference effect.
[0017] 5. Wide coverage: The composite polarization interference field formed by the cross-polarized antenna has more complex radiation characteristics, enabling wider coverage in space. In complex environments, such as urban areas with high-rise buildings or mountainous terrain, it can effectively reduce the impact of multipath fading and obstacle obstruction on the interference effect, extending the effective range of the jamming equipment. Actual measurements show that using the method of this invention can increase the effective jamming range of the jamming gun by 20% to 50%. Attached Figure Description
[0018] Figure 1 This is a top view of the present invention;
[0019] Figure 2 This is a perspective view of the present utility model;
[0020] Figure 3 This is a flowchart illustrating the process of this utility model.
[0021] In the diagram: 1. Mounting plate; 2. First antenna array; 3. Second antenna array; 4. First antenna; 5. Second antenna; 6. Third antenna; 7. Fourth antenna. Detailed Implementation
[0022] Please see Figure 1-3 ,
[0023] Example 1: A handheld drone jamming device to enhance jamming effect, including a mounting plate 1, a first antenna array 2 and a second antenna array 3 disposed on the mounting plate 1, the first antenna array 2 and the second antenna array 3 being arranged alternately.
[0024] Example 2: The difference between this example and Example 1 is that the first antenna array 2 includes a first antenna 4 and a second antenna 5. The first antenna 4 is set at a 45° angle to the left with respect to the center line of the mounting plate 1, and the second antenna 5 is set at a 45° angle to the right with respect to the center line of the mounting plate 1.
[0025] Example 3: The difference between this example and Example 1 is that the second antenna array 3 includes a third antenna 6 and a fourth antenna 7. The third antenna 6 is set at a 45° angle to the left with respect to the center line of the mounting plate 1, and the fourth antenna 7 is set at a 45° angle to the right with respect to the center line of the mounting plate 1.
[0026] Example 4: The difference between this example and Example 1 is that the first antenna 4 and the second antenna 5 are at the same height, and the third antenna 6 and the fourth antenna 7 are at the same height.
[0027] In summary, this handheld drone jamming device with enhanced jamming effect has the following advantages: 1. Low antenna mutual interference effect. This patent adopts ±45° cross-polarization arrangement decoupling technology, which reduces mutual interference energy by 95%.
[0028] 2. Cross-polarized antennas can transmit interference signals containing both horizontal and vertical polarization components, effectively countering UAV signals with varying polarization directions. When the polarization direction of the UAV signal changes, one polarization component in the composite interference signal will always couple well with the UAV receiving antenna, ensuring the stability of the interference effect. Compared to traditional vertically polarized antennas, the interference efficiency can be improved by more than 30% when facing UAV signals with randomly changing polarization directions.
[0029] 3. Regardless of how the drone's attitude changes, the jamming signal can be effectively suppressed, demonstrating strong anti-countermeasure capability.
[0030] 4. High interference efficiency. By reasonably adjusting the signal parameters of the two polarization units of the cross-polarized antenna, a specific polarization radiation mode can be formed, concentrating the interference energy in the effective polarization direction of the UAV receiving antenna and improving the utilization rate of interference energy. Compared with traditional vertically polarized antennas, under the same transmit power, the method of this invention can increase the interference signal power at the UAV receiver by 15% to 30%, thereby significantly enhancing the interference effect.
[0031] 5. Wide coverage: The composite polarization interference field formed by the cross-polarized antenna has more complex radiation characteristics, enabling wider coverage in space. In complex environments, such as urban areas with high-rise buildings or mountainous terrain, it can effectively reduce the impact of multipath fading and obstacle obstruction on the interference effect, extending the effective range of the jamming equipment. Actual measurements show that using the method of this invention can increase the effective jamming range of the jamming gun by 20% to 50%.
Claims
1. A handheld drone jamming device for enhancing jamming effect, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a first antenna array (2) and a second antenna array (3), and the first antenna array (2) and the second antenna array (3) are arranged in a cross manner.
2. The handheld drone jamming device for enhancing jamming effect according to claim 1, characterized in that: The first antenna array (2) includes a first antenna (4) and a second antenna (5). The first antenna (4) is set at a 45° angle to the left with respect to the center line of the mounting plate (1), and the second antenna (5) is set at a 45° angle to the right with respect to the center line of the mounting plate (1).
3. The handheld drone jamming device for enhancing jamming effect according to claim 2, characterized in that: The second antenna array (3) includes a third antenna (6) and a fourth antenna (7). The third antenna (6) is set at a 45° angle to the left with respect to the center line of the mounting plate (1), and the fourth antenna (7) is set at a 45° angle to the right with respect to the center line of the mounting plate (1).
4. The handheld drone jamming device for enhancing jamming effect according to claim 3, characterized in that: The first antenna (4) and the second antenna (5) are at the same height, and the third antenna (6) and the fourth antenna (7) are at the same height.