Wearable device for electronic suppression of wireless communications

Abstract

This utility model pertains to radio engineering. The technical result consists of increasing the ease and speed of movement of a radio-electronic suppression device. The claimed wearable radio-electronic suppression device for wireless communications comprises a housing in the form of a rectangular backpack with fastenings, capable of being carried by the user. The housing contains a noise generator, a radiator, a power supply module, a switching device, and an antenna-feeder unit (AFU) mounted externally. The housing is made of plastic. 7 cl., 8 fig.

Description

[0001] The utility model relates to the field of radio engineering and is intended to create broadband artificial radio interference, in particular to suppress wireless communication equipment, including subscriber terminals and devices based on wireless radio access systems, including unmanned aircraft systems (UAS).

[0002] The claimed device is intended for radio suppression (blocking) of control of unmanned aerial vehicles.

[0003] The device relates to the field of radio engineering, namely the technology of creating active intentional interference, and can be used for radio suppression (blocking) of radio signals used by UAVs for geo-positioning, control and communication, at the required (defined) distance (area) for radio suppression (blocking), the protective zone of an individual user or group.

[0004] In addition, the device can be used for radio suppression (blocking) of users (regardless of the number of users) of mobile communications and data transmission via radio channels (regardless of the number of communication / data transmission points) with unknown numbers using various methods, protocols / standards of communication and radio access, including:

[0005] onboard receiving and transmitting control modules for unmanned aerial vehicles (UAV) for reconnaissance and strike purposes, commercial type and home-made, in the frequency range specified in the OM;

[0006] Subscriber data transmission devices for object geolocation;

[0007] in the required (defined) territory (area) for radio suppression (blocking), the protective zone of the protected facility.

[0008] The radio suppression (blocking) method used in the device is based on the use of an interference signal:

[0009] - by the method of formation: active interference;

[0010] - by nature of occurrence: intentional interference;

[0011] - by the impact on the useful signal: suppressive interference;

[0012] - by time structure: continuous interference;

[0013] - by spectrum type: barrage interference in a given frequency band.

[0014] A known transmitter of an interference signal for GSM communication systems (patent No. 187912 U1, IPC H04K3 / 00, published on 03 / 22 / 2019) comprises a series-connected local oscillator, a balanced mixer, a bandpass filter, a power amplifier and an antenna, wherein a reference oscillator is introduced into it, the output of which is connected to the inputs of the local oscillator and a modulated signal generating unit, the output of which is connected to another input of the mixer; the modulated signal generating unit comprises a series-connected second PLL unit, a second PLL filter, an adder, a second amplifier and a second VCO, one output of which is connected to the second input of the second PLL unit, the other is the output of the modulated signal generating unit, in addition, the output of the modulating signal generator is connected to the second input of the adder.

[0015] A module for controlling the parameters of an interference signal is known (patent RU No. 2840341 ​​C1, IPC H04K3 / 00, G01S7 / 38, G01S7 / 495, published on 21.05.2025), comprising an interference generating unit for generating interference signals in a given frequency range, as well as adaptive adjustment of the interference parameters in real time, an interference signal generating and amplifying path, including a low-noise preamplifier and an output amplifier, an antenna system for emitting an interference signal obtained at the output of the interference signal generating and amplifying path, a communication system unit for transmitting and receiving control signals from external devices and to external devices, as well as transmitting and receiving signals between module units.The module also contains a control unit for receiving control commands, generating control actions and transmitting them to the interference generating unit and / or the communication system unit, as well as a means for controlling the antenna system, a data bus for transmitting data between the device units, a power supply unit for converting the input voltage into a stabilized supply voltage for the module units.

[0016] A device for creating a radio interference signal for blocking subscriber terminals of mobile communications and wireless radio access systems is known (patent RU No. 2766325 C1, IPC H04K3 / 00, published 03 / 15 / 2022), the closest in technical essence, and selected as a prototype, in which each generator of a linearly changing voltage (VCO), being connected to a common VCO, generates harmonic oscillations synchronized in time with the oscillations generated by the remaining VCOs, and differing in frequency from the oscillations generated by the remaining VCOs, as a result of which an increase in the temporary impact of the generated interference on the useful signal is achieved.

[0017] However, the known devices do not provide the ability to quickly and easily move from one point to another, have a complex and insufficiently reliable design, have large weight and size parameters, and are labor-intensive in assembly, installation and operation.

[0018] The technical problem solved by the creation of the utility model is to ensure the ability to quickly and easily transfer devices from one place to another, while ensuring the reliability and efficiency of the device.

[0019] The technical result provided by the utility model consists in increasing the ease and efficiency of movement of a device for electronic suppression of wireless communication equipment for the protection of vehicles.

[0020] The technical result is achieved through a lightweight, durable and reliable housing, in which the elements of the device are compactly placed.

[0021] This ensures easy, convenient and quick transfer of the device by one user from one place to another.

[0022] Furthermore, the design of the device is simplified, the mass and dimensional parameters are reduced, simplicity, convenience and efficiency of manufacture, assembly, installation, dismantling are ensured, while maintaining high efficiency and reliability of the device.

[0023] In addition, the efficiency of electronic suppression of wireless communications is increased to protect an individual user or group.

[0024] In addition, an increase in the probability of suppressing useful signals in a given frequency range is achieved without increasing the emitted power, as well as the compact placement of all elements inside the case without loss of efficiency in a portable backpack.

[0025] At the same time, sanitary and epidemiological standards are observed and the impact on the operation of the communications infrastructure outside the affected area is minimized.

[0026] The technical result is achieved in that a wearable device for electronic suppression of wireless communication means contains a housing made in the form of a rectangular backpack with fasteners, and with the ability to be carried by the user, while a noise signal generator, a radiator, a power supply module, a switching device and an antenna-feeder device (AFD) installed outside the housing are installed in the housing, and the housing is made of plastic.

[0027] The backpack fastenings are made up of webbing straps, into the base of which a metal plate is sewn, which is attached to the body.

[0028] The front wide wall of the case is removable for access to the inside of the device and is secured with screws.

[0029] The AFU includes a radiating antenna and a high-frequency cable connecting it to a noise signal generator.

[0030] In addition, cooling fans are installed inside the case to blow air onto the radiator.

[0031] The noise signal generator contains a linearly variable voltage generator (LVG), a high-frequency generator (HFG), a preamplifier, and a power amplifier (PA).

[0032] In this case, the noise signal generator, radiator, switching device, and power supply module are fixed to the base of the housing with a riveted connection.

[0033] In this case, each antenna of the AFU is screwed onto the housing high-frequency N-connector, which, in turn, is connected via an RF cable to the noise signal generator.

[0034] The claimed device is shown in the figures.

[0035] Fig. 1 shows the appearance of the device in an open case.

[0036] Fig. 2 shows the external appearance of the device in a closed case from the outside.

[0037] Fig. 3 shows the external appearance of the device in a closed case from the inside.

[0038] Fig. 4 shows the structural diagram of the device.

[0039] Fig. 5 shows a simplified block diagram of a noise signal generator.

[0040] Fig. 6 shows the appearance of the noise signal generator board.

[0041] Fig. 7 shows the time graph of the pulses generated by GLIN during operation of the device.

[0042] Fig. 8 shows the amplitude-frequency spectrum of the VCO during operation of the device.

[0043] The following positions are shown on the figures:

[0044] 1 - noise signal generator;

[0045] 2 - antenna-feeder device (AFU);

[0046] 3 - radiator;

[0047] 4 - switching device;

[0048] 5 - power supply module;

[0049] 6 - cooling fans;

[0050] 7 - body;

[0051] 8 - shoulder straps.

[0052] The essence of the claimed device.

[0053] The electronic suppression device contains a housing 7, inside which are installed: a noise signal generator 1, mounted on top of a radiator 3, and connected to a power supply module 5 through a switching device 4.

[0054] Outside the housing 7, on its outer top panel, an antenna-feeder device (AFD) 2 is installed, connected through a switching device 4 to a noise signal generator 1. AFD 2 contains several antennas, where each individual antenna is screwed onto the housing's high-frequency N-connector, which, in turn, is connected through an RF cable to the noise signal generator 1.

[0055] AFU 2 includes a radiating antenna and a high-frequency cable connecting it to the noise signal generator 1. The number of AFU 2 used in the device is proportional to the number of noise signal generators 1; one AFU 2 is used per generator.

[0056] Noise signal generator 1 contains a linear voltage generator (LVG), a high frequency generator (HFG), a preamplifier and a power amplifier (PA).

[0057] The noise generator 1, heat sink 3, switching device 4, and power supply module 5 are riveted to the base of the housing. This mounting ensures maximum reliability against vibrations that may occur during transportation.

[0058] The inner side panel of case 7 contains cooling fans 6 for cooling the radiator 3 and for flowing air from outside the case through all the device's components. This case version is equipped with two cooling fans 6. One fan 6 is designed to draw air into the case, and the other is designed to exhaust air outward.

[0059] Case 7 has openings for the size of cooling fans 6, covered from the outside with protective mesh (the size of the holes in the mesh is no more than 2 mm), protecting the device from large dirt and precipitation.

[0060] The device's case 7 is designed as a rectangular backpack with fasteners that allow the user to move it from place to place. The shape of the case 7 was chosen for its convenient placement of all components, including the AFU 2. A different case 7 shape can be used if needed.

[0061] The backpack fastenings are 8 straps, with which a person can put the device on himself like a backpack, which provides a convenient way to carry the device.

[0062] The base of the 8 shoulder straps is attached to the wall opposite the lid with screws. A metal plate is sewn into the base of the shoulder straps and is then attached to the body 7.

[0063] The material used to make the body 7 must have the required strength and lightness, such as sheet metal or plastic.

[0064] To access the interior of the device, the wide front panel of case 7 is removable, serving as a cover and attached to case 7 with screws. Repair and assembly of the device is performed by unscrewing the screws and removing this cover.

[0065] The power module 5 can be removed from the housing through the removable panel, and can be fixed by bolt connection.

[0066] Overall dimensions of the case 7 (height * width * depth) - 500 * 350 * 140 mm.

[0067] The claimed device contains 10 noise signal generators 1, while a housing of this size can accommodate from 1 to 12 noise signal generators 1.

[0068] To accommodate fewer generators, a smaller enclosure can be used.

[0069] Case 7 is selected based on the smallest possible dimensions for ease of use and compact placement of components. It is a rectangular backpack designed to protect against precipitation and dust. Since the device's main components are rectangular, the case itself is also rectangular to efficiently utilize the space inside.

[0070] The arrangement of the elements in the 7-piece case, the 7-piece case size, and the 8-piece shoulder straps allow the device to be carried on a person's shoulders like a backpack for extended periods. The device can also operate while the person is moving.

[0071] Noise signal generator 1 contains a linear voltage generator (LVG), a high frequency generator (HFG) - VCO (voltage controlled oscillator), a preamplifier and a power amplifier (PA) - the main amplification stage (Fig. 4). These devices are located on a single printed circuit board and are the main elements of noise signal generator 1. The sequence of their arrangement on the printed circuit board is shown in Fig. 3. This board is placed in an aluminum case. The external appearance of noise signal generator 1 is shown in Fig. 4.

[0072] GLIN controls the controlled voltage generator (VCO), which generates a LFM (linear frequency modulated pulse) signal.

[0073] The preamplifier and power amplifier stepwise increase the power of the signal generated by the chirp amplifier.

[0074] AFU 2 includes radiating omnidirectional antennas and a high-frequency (HF) cable connecting them to a high-frequency (HF) signal source (noise signal generator 1).

[0075] Radiator 3 is made of aluminum and contains a three-dimensional base and fins with a ventilation space. Noise signal generator 1 is attached to the base of radiator 3.

[0076] In this case, several noise signal generators 1 can be installed, and their number depends on the range of frequencies to be suppressed.

[0077] Fig. 1 shows a variant with 10 noise signal generators 1 and AFU 2. Which provides suppression at frequencies of 400-1300 MHz, 2300-2500 MHz, 5100-5300 MHz, 5700-5900 MHz.

[0078] The design and material of heatsink 1 ensure the removal of excess heat from noise signal generator 1, which occurs during the operation of the transistor (the main element) of the power amplifier. Cooling fans 6 increase the efficiency of heat dissipation.

[0079] Switching device 4 is a relay-type device designed to distribute electric power to each noise signal generator 1, as well as control its switching on and off.

[0080] Power Module 5 - 28.4V Rechargeable Li-ion Battery.

[0081] All the main elements (Fig. 1), with the exception of the AFU 2, are mounted on one flat base, but the generator 1 is installed on the base of the radiator 3.

[0082] The radiator 3, switching unit 4, and power supply module 5 are riveted to the lower base of the housing. The connecting and power supply wires are also routed along the housing base. Noise signal generator 1 is attached to radiator 3 through a layer of heat-conducting material. Their relative positions depend on the placement of antenna feeder 2 on the antenna array. Depending on the selected suppression ranges, a specific noise signal generator 1 and a corresponding antenna feeder 2 are used.

[0083] In particular, devices with suppression ranges of 400-500 MHz, 800-900 MHz, and 900-1000 MHz. AFU 2 are selected for noise signal generators based on:

[0084] - SWR (standing wave ratio) the value of this coefficient should not exceed 2.0 over the entire range width.

[0085] - reactance across the entire range - the indicator should not go beyond the values ​​of 45-55 Ohms.

[0086] - The maximum gain should be in the middle of the range.

[0087] AFU 2 is located on the antenna field due to harmonic compatibility and the quarter-wave antenna field opening distance. For example, the 400-500 MHz and 800-900 MHz ranges will negatively impact each other, since the 400-500 MHz range has first-order harmonics (850-950 MHz and 175-275 MHz), while the 800-900 MHz range has first-order harmonics (375-475 MHz, 1650-1750 MHz). As can be seen, harmonic parasitic signals will affect these two noise signal generators 1. For this reason, to minimize this effect, these antennas are separated by the maximum possible distance from each other within the housing.

[0088] Next, the quarter-wavelength antenna field opening distance of each antenna is calculated. For an antenna for the 800-900 MHz channel, this distance is at least 8.4 cm; any foreign metal elements within this radius of the antenna must be excluded. Based on the location of antenna feeder 2, noise signal generator 1 is placed on radiator 3, based on the convenience of installing a quarter-wavelength RF cable. The quarter-wavelength cable is calculated based on the wavelength of the signal emitted through the antenna. For example, the wavelength for the 800-900 MHz channel is 35 cm, and a quarter-wavelength is 8.75 cm. The RF cable length is selected to be as short as possible while still being a multiple of the quarter-wavelength.

[0089] Power supply module 5 is connected to switching device 4, through which it supplies power to noise signal generator 1.

[0090] Switching device 4, in turn, controls the moment of switching on and off of noise signal generator 1.

[0091] Noise signal generator 1 is fixed on radiator 3 and connected to RF cables and AFU 2.

[0092] The claimed device has the following characteristics:

[0093] - Use of broadband linear frequency modulated (LFM) pulse signals, providing effective suppression over a wide frequency range, the characteristics of which are tuned to existing communication systems. This is achieved through electrical adjustment of the pulse parameters generated by the GLIN (specifically, varying the period from 2 to 8 μs depending on the range of the interference being generated);

[0094] - Omnidirectional radiation achieved through spatial diversity and phase matching of channels (the antennas are spaced so that the harmonic emissions of some channels, similar in frequency to the fundamental radiation of other channels, are maximally separated, taking into account the quarter-wavelength antenna field of each antenna). This increases the reliability of suppression of wireless communication equipment, including subscriber terminals and devices based on wireless radio access systems, including unmanned aerial systems (UAS). This is achieved through the use of antennas with circular polarization and an omnidirectional radiation pattern.

[0095] Also, the relative position of the antennas inside the housing 7 and the precise adjustment of the length of the RF cables for phase matching play an important role;

[0096] - The antennas are spaced so that the harmonic emissions of some channels, similar in frequency to the fundamental emissions of other channels, are as far apart as possible. This arrangement reduces the negative impact of the reverse wave (which can reduce radiated power) on noise signal generator 1;

[0097] - modular architecture allows the device to be scaled depending on the required suppression frequencies. The modular architecture means that adding additional frequency ranges requires minimal effort without changing the design. However, the claimed range expansion is limited by the backpack body size and the user-friendly dimensions.

[0098] Radio-transparent polymer materials (fiberglass, polycarbonate, and plastics) are used for the base and antenna array. The housing is made of ABS plastic to reduce weight.

[0099] Dimensions vary depending on the number of channels used in production.

[0100] The device operates as follows.

[0101] This device can be used on foot when vehicle access is either impossible or prohibited. The device is capable of suppressing signals over a range sufficient to protect a group of people on foot while performing tasks at facilities or while moving.

[0102] Power is supplied to the device via manual or automatic control of switching device 4. Power is supplied directly from power module 5 (a lithium-ion battery) at 28 V inside the device. After power is applied, noise signal generator 1 and cooling fans 6 are started. The GLIN generates a control triangular signal with a period dependent on frequency. This signal drives the VCO, which in turn generates a wideband sliding chirp (linear frequency modulated) signal. The signal is then successively amplified from 5 mW at the preamplifier to 1 W, and at the main amplifier stage to 70 W.

[0103] Radiators 3 dissipate excess heat generated by noise signal generators 1. And cooling fans 6 increase the efficiency of heat dissipation by blowing air from outside the case through all the elements of the device.

[0104] Then the interference signal is transmitted via a coaxial RF cable to the emitting antenna AFU 2, and creates an area of ​​guaranteed suppression of wireless communication equipment, including subscriber terminals and devices based on wireless radio access systems, including unmanned aerial systems (UAS).

[0105] The cooling system is a crucial element of the product. The main amplifier stage operates on crystal transistors (GAN or LDMOS technology), which, in turn, generate excessive heat. Aluminum heatsinks, combined with six cooling fans, ensure sufficient uptime and extend the lifespan of the device.

[0106] Unlike known analogs, where increased efficiency is achieved by increasing the radiated power, the proposed solution increases the spectral density and temporal continuity of the interference by adjusting the interference generation parameters. At the same time, the power of each transmitting channel remains within acceptable limits, and the total impact on the suppressed receiver increases proportionally to the square of the number of VCOs involved (n). 2 ), which increases the likelihood of guaranteed suppression.

[0107] The utility model can be used in stationary and mobile electronic warfare systems to protect critical facilities from unauthorized radio control, including when countering unmanned aerial vehicles operating in the GSM, LTE, Wi-Fi, LoRa and other wireless communication standards.

[0108] Fig. 4 shows the structural diagram of the device, where 1, 2, n is the number of noise signal generators, corresponding to the number of suppression channels in the device.

[0109] Fig. 5, 6 shows the noise signal generator circuit, where: GLIN is a generator of linearly changing (sawtooth) voltage, on an integrated circuit, a universal timer NE555; HF generator is a high-frequency generator, based on a voltage-controlled oscillator (VCO); PA is a power amplifier, based on GaN or LDMOS transistors.

[0110] The power supply (PS) includes AC / DC, DC / DC converters, which provide the required voltage for the noise signal generator (NSG), as well as protection against overload and short circuit, and protection against overvoltage.

[0111] To control the operation of the device, a control panel is provided, which is connected to external connectors located on the body.

[0112] The noise signal generator (NSG) (Fig. 5) is a key component of the device. It generates and amplifies signals for a given frequency band of the suppression channel, as specified in the operating instructions. The number of NSGs included in the device is determined by the number of blocked control frequency ranges and corresponds to the number of suppression channels in the device.

[0113] GLIN (Fig. 5) based on an analog integrated circuit, the universal timer NE555 forms (generates) single or repeating pulses of a given shape, with stable time characteristics t1, t n , (Fig. 7).

[0114] In a voltage-controlled oscillator (VCO), oscillations of a given shape and time characteristics t are generated n in GLIN, the frequency of which is determined by the control voltage (U упр ). In the VCO, the value of the control voltage is converted, changing in the range U мин - U максin the nominal output frequency in the F1 range мин - F1 макс , corresponding to the frequency band of the signal transmission of the blocked communication standard / protocol.

[0115] Control voltage (U упр ), for example, for GUN1: U is set ц - frequency F1 ц , U мин - frequency F1 мин , U макс - frequency F1 макс (Fig. 8). The range width Fmin - Fmax is determined by the technical characteristics of a specific VCO. Depending on the range width of the VCO, the number of suppression channels in the device for effective radio suppression (blocking) is determined.

[0116] Fig. 7 shows a graph of pulses generated by the VCO during operation of the device, where: F1 мин - corresponds to the lower limit of the frequency range of the blocked communication standard; F1 макс - corresponds to the upper limit of the frequency range of the blocked communication standard; F1 ц- corresponds to the center of the frequency range of the blocked communication standard.

[0117] Thus, an interference signal with a width of F is generated at the VCO output мин to F макс (Fig. 6), corresponding to the frequency band of the signal transmission of the blocked communication standard / protocol, the shape and time characteristics t п (see Fig. 7), determined at the output of GLIN.

[0118] Then the interference signal is amplified in a power amplifier (PA), based on GaN or LDMOS transistors, to the required value and is fed to the antenna through a matching device.

[0119] The device has the following advantages:

[0120] 1. Modularity and mobility: easy to carry, can be deployed on various platforms, including fixed and mobile installations, which provides flexibility in application.

[0121] 2. Wide frequency range: in various frequency ranges (30 MHz - 6 GHz), which can effectively counter various types of UAVs.

[0122] 3. Operational localization of the suppression / blocking zone.

[0123] 4. Suppression of an unlimited number of communication and data transmission devices, UAVs.

[0124] 5. Minimum deployment time.

[0125] 6. Possibility of integration with other systems.

[0126] The claimed device can be manufactured in the conditions of domestic industry, using known technological processes and standard equipment.

Claims

1. A portable device for electronic suppression of wireless communications equipment, comprising a housing made in the form of a rectangular backpack with fasteners and with the ability to be carried by the user, wherein a noise signal generator, a radiator, a power supply module, a switching device and an antenna-feeder device (AFD) installed outside the housing are installed in the housing, wherein the housing is made of plastic.

2. The device according to paragraph 1, characterized in that the backpack fastenings are in the form of straps, into the base of which a metal plate is sewn, which is attached to the body.

3. The device according to item 1, characterized in that the front wide wall of the housing is removable for access to the inside of the device and is secured with screws.

4. The device according to item 1, characterized in that the AFU includes a radiating antenna and a high-frequency cable connecting it to a noise signal generator.

5. The device according to item 1, characterized in that additional cooling fans are installed inside the housing to blow air onto the radiator.

6. The device according to paragraph 1, characterized in that the noise signal generator contains a linearly variable voltage generator (LVG), a high-frequency generator (HFG), a preamplifier, and a power amplifier (PA).

7. The device according to item 1, characterized in that the noise signal generator, radiator, switching device, and power supply module are secured to the base of the housing by a riveted connection.

8. The device according to paragraph 1, characterized in that each antenna of the AFU is screwed onto a high-frequency N-connector on the housing, which, in turn, is connected via an RF cable to a noise signal generator.

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