CN115567147A - Radio interference system - Google Patents
Radio interference system Download PDFInfo
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- CN115567147A CN115567147A CN202211132796.7A CN202211132796A CN115567147A CN 115567147 A CN115567147 A CN 115567147A CN 202211132796 A CN202211132796 A CN 202211132796A CN 115567147 A CN115567147 A CN 115567147A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/44—Jamming having variable characteristics characterized by the control of the jamming waveform or modulation type
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/60—Jamming involving special techniques
- H04K3/62—Jamming involving special techniques by exposing communication, processing or storing systems to electromagnetic wave radiation, e.g. causing disturbance, disruption or damage of electronic circuits, or causing external injection of faults in the information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
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Abstract
The invention discloses a radio interference system. Each layer of the transmitting antenna array forms a circular antenna array, and each directional antenna is used for radiating the same number of interference signals output by the power amplifier to the outside and carrying out power synthesis in space to obtain an integral interference signal. The power amplifier comprises a plurality of power amplification modules with equal amplitude and same phase, and the number of the power amplification modules is equal to that of the directional antennas in the transmitting antenna array. The beam control network comprises a power divider, a plurality of amplitude adjustment modules and a plurality of phase adjustment modules. The signal generation module is used for generating an interference signal. The switching of the spatially radiated power directional diagram by the overall interference signal is realized only by modifying the instruction of the amplitude value and/or the phase value of each interference signal radiated from each directional antenna to the outside. The invention can realize high-power integral interference signals and extremely high switching speed when different space radiation power directional diagrams are realized.
Description
Technical Field
The invention relates to a communication interference system.
Background
The communication interference system adopts a combined framework of a signal source, a power amplifier and a transmitting antenna to transmit a high-power interference signal to interfere a communication terminal, so that the interference signal reaching the communication terminal is far larger than a normal communication signal, and the capability of the communication terminal for receiving the normal communication signal is blocked. For example, to interfere with drones, communication stations, etc.
The existing communication interference systems generally have the following four types.
The first is an omnidirectional beam communication interference system, which can form an omnidirectional 360 ° antenna beam in a horizontal plane, thereby realizing spatial interference in a range of 360 ° omnidirectional in the horizontal plane. The transmission link of the radiated interference signal is as follows: the exciter (i.e. the signal source) generates an excitation signal- > the power amplifier performs power amplification- > the omnidirectional transmitting antenna performs interference signal radiation. The omnidirectional beam communication interference system is characterized in that: the gain is low, the equivalent radiation power is small, the acting distance is short, azimuth guiding is not needed, electromagnetic interference generated by cooperative working systems such as radar, navigation and detection is large, and the potential of an liftable EIRP (effective isotropic radiated power) is small.
The second is a directional beam communication interference system, which can form a directional antenna beam with a certain beam width (for example, ± 15 °) in the horizontal plane, thereby realizing spatial interference within a certain beam range oriented in the horizontal plane. The transmission link of the radiated interference signal is as follows: the exciter generates an excitation signal- > the power amplifier performs power amplification- > the directional transmitting antenna performs interference signal radiation. The directional beam communication interference system is characterized in that: the gain is high, the equivalent radiation power is large, the action distance is long, the azimuth guiding information is required, the electromagnetic interference generated to a cooperative system is small, and the potential of the liftable EIRP is large.
The third is to configure an omnidirectional beam communication interference system and a directional beam communication interference system at the same time, and the two systems are used in combination. The scheme integrally comprises two sets of exciters, two sets of power amplifiers and two pairs of transmitting antennas (omnidirectional and directional). The combined use of the two systems is characterized in that: the system comprises two sets of exciters and two sets of power amplifiers, and the cost is high; the electromagnetic interference generated by a cooperative system is large, and the azimuth binding cannot be performed due to the omnidirectional interference; the EIRP improvement potential of the omnidirectional interference is small. The azimuth binding means that no interference signal is radiated in a specific area.
The fourth method is to use two antennas for switching. The transmission link of the radiated interference signal is as follows: the exciter generates an excitation signal- > the power amplifier performs power amplification- > the omnidirectional transmitting antenna and the directional transmitting antenna switch to transmit the interference signal. The scheme comprises a set of exciters, a set of power amplifiers and two transmitting antennas (omnidirectional and directional). The switching use of the two antennas is characterized in that: the electromagnetic interference generated to the cooperative system is large, because the omnidirectional interference can not carry out the direction binding; the EIRP (interference induced noise reduction) improvement potential of the omnidirectional interference is small; directional interference is limited by the power capacity of the switch, and the EIRP (equivalent impedance performance) improvement potential is also limited; high power switches are required, which are typically slow to switch.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a novel communication interference system, which can well have the functions of omnidirectional interference and directional interference, can realize self-defined beam coverage, and can overcome the defect that the omnidirectional interference cannot realize azimuth binding.
In order to solve the above technical problem, the present invention discloses a radio interference system, which includes a transmit antenna array, a power amplifier, a beam control network, and a signal generation module. The transmitting antenna array is only one layer and consists of more than four constant-amplitude and in-phase directional antennas, all the directional antennas are uniformly distributed on a circumference parallel to a horizontal plane to form a circular antenna array, and the radiation direction of each directional antenna radiates outwards along the radius of the circular antenna array; and each directional antenna is used for radiating the same number of interference signals output by the power amplifier to the outside, and power synthesis is carried out in the space to obtain the integral interference signal. The power amplifier comprises a plurality of power amplification modules with equal amplitude and same phase, and the number of the power amplification modules is equal to that of the directional antennas in the transmitting antenna array; each power amplification module is used for amplifying the same number of interference signals with specific amplitude and phase output by the beam control network. The beam control network comprises a power divider, a plurality of amplitude adjusting modules and a plurality of phase adjusting modules, wherein the number of signals distributed by the power divider, the number of the amplitude adjusting modules and the number of the phase adjusting modules are equal to the number of directional antennas in the transmitting antenna array; the power distributor is used for dividing one path of interference signals generated by the signal generation module into multiple paths, the amplitude adjustment modules respectively adjust the amplitude of the multiple paths of interference signals with the same quantity according to a system instruction, and the phase adjustment modules respectively adjust the phase of the multiple paths of interference signals with the same quantity according to the system instruction so as to generate multiple paths of interference signals with specific amplitude and phase. The signal generating module is used for generating an interference signal. The amplitude adjustment of each path of interference signal radiated outside by each directional antenna is only responsible for an amplitude adjustment module in the beam control network, and the phase adjustment of each path of interference signal radiated outside by each directional antenna is only responsible for a phase adjustment module in the beam control network; the switching of the spatial radiation power directional diagram of the overall interference signal is realized only by modifying the amplitude value and/or the phase value of each interference signal radiated outside by each directional antenna.
Alternatively, the transmitting antenna array is formed by overlapping a plurality of layers, each layer is composed of more than four directional antennas with equal amplitude and same phase, all the directional antennas of each layer are uniformly distributed on a circumference parallel to the horizontal plane to form a circular antenna sub-array, and the radiation direction of each directional antenna of each layer radiates outwards along the radius of the circular antenna sub-array of the layer.
Furthermore, the circle centers of the circular antenna subarrays on different layers correspond to each other up and down, the radiuses of the circular antenna subarrays are the same, the number of the directional antennas on different layers is the same, the positions of the directional antennas on different layers correspond to each other up and down, the heights of adjacent layers are equal, and the transmitting antenna array is a cylindrical antenna array.
Further, the transmit antenna array may be one or more of: the circle centers of the circular antenna subarrays of different layers correspond up and down but have different radiuses, the directional antennas of different layers are different in number, the positions of the directional antennas of different layers are staggered up and down, and the heights of adjacent layers are different; the transmitting antenna array forms a spatial stereo array in any form.
Further, when the number of the directional antennas included in the transmitting antenna array is M, M is a positive integer greater than or equal to 4; the beam control network comprises a 1-minute-M power divider, M attenuators and M phase shifters; the power divider with 1 minute M divides one path of interference signals generated by the signal generation module into M paths; the M paths of interference signals are subjected to amplitude adjustment through M attenuators respectively, and then are subjected to phase adjustment through M phase shifters respectively, so that M paths of interference signals with specific amplitudes and phases are obtained and are sent to M directional antennas in the transmitting antenna array respectively.
Furthermore, each directional antenna in the transmitting antenna array keeps constant amplitude and same phase, namely signal radiation with constant amplitude and same phase is realized; and each power amplification module in the power amplifier keeps constant amplitude and same phase, namely, power amplification with constant amplitude and same phase is realized.
Preferably, when the radio interference system operates in the omni-directional beam interference mode, the whole interference signal is completely covered in 360 ° in all directions in the horizontal plane, a circular coverage area is formed, and the power values at the edges of the coverage area are substantially the same.
Preferably, when the radio interference system works in the omni-directional beam interference mode with azimuth binding, the overall interference signal forms one or more zero points at a specified azimuth angle, and the angle except the position of the zero point is completely covered; the azimuth binding means that no interference signal is radiated in a specific area; the zero point refers to a position of a non-interference signal.
Preferably, when the radio interference system operates in the directional beam interference mode, the overall interference signal forms one or more high-gain narrow beams at a specified azimuth angle.
Preferably, when the radio interference system operates in the custom beam interference mode, the actually realized spatial radiation power pattern of the overall interference signal approaches the custom desired realized spatial radiation power pattern.
The invention has the technical effects that: the method has the advantages of low cost, small electromagnetic interference generated by a cooperative system, capability of realizing self-defined beam coverage (namely a self-defined space radiation power directional diagram), capability of realizing a high-power integral interference signal and extremely high switching speed when different space radiation power directional diagrams are realized.
Drawings
Fig. 1 is a schematic structural diagram of an example of a radio interference system proposed by the present invention.
Fig. 2 is a schematic structural diagram of an example of the beam steering network in fig. 1.
Fig. 3 is a schematic diagram of an example of a spatially radiated power pattern implemented by the first embodiment of the radio interference system proposed by the present invention (omni-directional beam interference mode).
Fig. 4 is a schematic diagram of an example of a spatially radiated power pattern implemented by the second embodiment of the radio interference system proposed by the present invention (omni-directional beam interference pattern with azimuth binding).
Fig. 5 and fig. 6 are schematic diagrams of two examples of spatial radiation power patterns realized by the third embodiment (directional beam interference mode) of the radio interference system proposed by the present invention.
Fig. 7 is a schematic diagram of an example of a spatial radiated power pattern implemented by embodiment four (a custom beam interference pattern) of the radio interference system proposed by the present invention.
The reference numbers in the figures illustrate that: the device comprises a transmitting antenna array 1, a power amplifier 2, a beam control network 3 and a signal generating module 4.
Detailed Description
Referring to fig. 1, an example of a radio interference system according to the present invention includes a transmit antenna array 1, a power amplifier 2, a beam control network 3, and a signal generating module 4.
The transmitting antenna array 1 is only one layer and consists of M directional antennas with equal amplitude and same phase, the M directional antennas are uniformly distributed on a circumference parallel to a horizontal plane to form a circular antenna array, and the radiation direction of each directional antenna radiates outwards along the radius of the circular antenna array. The uniform distribution refers to the uniform arrangement of the angles between the circle center of the circular antenna array and the connecting line of each directional antenna. M is a positive integer of 4 or more, and M =8 is exemplarily taken in FIG. 1. Each directional antenna in the transmitting antenna array 1 is used to radiate each path of interference signals with the same number output by the power amplifier 2 to the outside, and power synthesis is performed in the space to obtain an overall interference signal.
The power amplifier 2 comprises a plurality of power amplification modules with equal amplitude and same phase, and the number of the power amplification modules is equal to the number of the directional antennas in the transmitting antenna array 1. The power amplification modules are used for amplifying the same number of interference signals with specific amplitude and phase output by the beam control network 3.
The beam control network 3 includes a power divider, a plurality of amplitude adjustment modules, and a plurality of phase adjustment modules, where the number of signals distributed by the power divider, the number of amplitude adjustment modules, and the number of phase adjustment modules are all equal to the number of directional antennas in the transmit antenna array 1. The power divider is configured to divide the one-path interference signal generated by the signal generation module 4 into multiple paths, the multiple amplitude adjustment modules respectively perform amplitude adjustment on multiple paths of interference signals of the same number according to a system instruction, and the multiple phase adjustment modules respectively perform phase adjustment on multiple paths of interference signals of the same number according to the system instruction, so as to generate multiple paths of interference signals with specific amplitudes and phases.
The signal generating module 4 is configured to generate a path of interference signal, that is, a specific interference signal pattern is generated according to a system instruction.
Alternatively, the transmitting antenna array 1 is a multilayer stack, each layer is composed of Mi equal-amplitude and same-phase directional antennas, and the value range of i is the number of layers of the transmitting antenna array 1. Mi directional antennas of each layer are uniformly distributed on a circumference parallel to the horizontal plane to form a circular antenna sub-array, and the radiation direction of each directional antenna of each layer radiates outwards along the radius of the circular antenna sub-array of the layer. The uniform distribution means that the angles between the circle centers of the circular antenna subarrays on the layer and the connecting lines of all the directional antennas on the layer are uniformly distributed. Mi is a positive integer more than or equal to 4. Typically, the centers of the circular antenna sub-arrays in different layers correspond to each other up and down and have the same radius, the number (Mi value) of the directional antennas in different layers is the same, the positions of the directional antennas in different layers correspond to each other up and down, and the heights between adjacent layers are equal, so as to form a cylindrical antenna array (for example, a cylindrical conformal array).
Further, the present invention also allows for one or more of the following complications to occur: the circle centers of the circular antenna subarrays of different layers correspond to each other up and down, but the radiuses are different, the number (Mi values) of the directional antennas of different layers are different, the positions of the directional antennas of different layers are staggered up and down, and the heights of adjacent layers are different. In this case, the entire transmit antenna array 1 may form any type of spatial solid array, such as a conical antenna array, a spherical antenna array, or the like. When the transmitting antenna array with the complex shape realizes a directional beam interference mode and a user-defined beam interference mode, a more complex algorithm is also adopted for calculating amplitude values and phase values of interference signals to realize a power directional diagram of spatial radiation expected to be realized.
Referring to fig. 2, this is an example of a beam steering network 3. When the number of directional antennas included in the transmit antenna array 1 is 8, the beam control network 3 includes a 1-to-8 power divider, 8 attenuators, and 8 phase shifters. The 1-to-8 power divider divides the interference signal generated by the signal generation module 4 into 8 paths. The 8 paths of interference signals are respectively subjected to amplitude adjustment through 8 attenuators, and then are respectively subjected to phase adjustment through 8 phase shifters, so that 8 paths of interference signals with specific amplitudes and phases are obtained and are respectively sent to 8 directional antennas in the transmitting antenna array 1.
In the radio interference system provided by the present invention, each directional antenna in the transmitting antenna array 1 needs to keep constant amplitude and in phase, that is, signal radiation with constant amplitude and in phase is realized. Each power amplification module in the power amplifier 2 also needs to maintain the same amplitude and the same phase, that is, power amplification with the same amplitude and the same phase is realized. The amplitude and phase adjustment of the interference signals for each channel is therefore only taken care of by the attenuators (i.e. amplitude adjustment modules) and phase shifters (i.e. phase adjustment modules) in the beam control network 3.
The radio interference system provided by the invention can realize that the whole interference signal has coverage ranges with different shapes and different index requirements, namely the whole interference signal has different space radiation power directional diagrams, only by modifying software configuration, namely modifying amplitude values and/or phase values of all paths of interference signals transmitted by all directional antennas on the basis of the same hardware system.
The first embodiment is as follows: omni-directional beam interference pattern. Referring to fig. 3, the circle is marked 0, 30, 60 \8230where8230indicates the azimuth angle in the horizontal plane in degrees. The omni-directional beam interference mode means that the whole radio interference system can achieve full coverage of 360 degrees in all directions in the horizontal plane, the coverage range of the circle is shown in a bold line, and the power value at the edge of the coverage range is the same or basically the same. This requires that the amplitude values of the interference signals output by the directional antennas are equal, and the phase values are all 0 degrees. In order to achieve omni-directional beam coverage, the selection of each directional antenna and the spacing between adjacent directional antennas are required. A miniaturized directional antenna is generally required, the operating wavelength of the directional antenna is usually about 0.5 times of the operating wavelength of the whole transmitting antenna array, and the beam width value of a directional antenna pattern generally needs to reach about 100 degrees, so that the directional antenna has better omni-directionality (i.e. better out-of-roundness).
The second embodiment: omni-directional beam interference pattern with azimuth binding. Referring to fig. 4, the circle is marked 0, 30, 60 \8230where8230indicates the azimuth angle in the horizontal plane in degrees. The omni-directional beam interference pattern with azimuth binding means that the whole radio interference system can realize one or more zero points at a specified azimuth angle, the angles except the zero point position are completely covered, and the coverage range is shown in bold lines. The null point refers to a position of a non-interference signal for avoiding or reducing interference to a cooperative device at the null point position. Fig. 4 exemplarily shows that only one zero point is formed at the azimuth angle 60 deg. position. When the number of directional antennas is sufficiently large, multiple nulls can be formed at multiple designated azimuth angles using the same technique. How to set the phase value of each interference signal to form the zero point at the designated azimuth belongs to the prior art (null generation), and is not described herein.
Example three; directional beam interference patterns. Referring to fig. 5 and 6, the circle is marked 0, 30, 60 \8230 \8230indicatingthe azimuth angle in degrees on the horizontal plane. The directional beam interference mode means that the whole radio interference system can realize high-gain narrow beams at a specified azimuth angle, and the coverage range is shown in bold lines. The high-gain narrow beams achieved are used for directional high-power interference in a given direction. Fig. 5 exemplarily shows that one high-gain narrow beam is formed in the azimuth 0 deg. direction. Fig. 6 exemplarily shows that one high-gain narrow beam is formed in the azimuth angle 10 deg.. Further, by periodically changing the amplitude value and phase value of each interference signal, a directional beam stepped by a specific angle value can be realized, for example, a high-gain narrow beam is formed in the azimuth direction of 0 ° at a certain time, a high-gain narrow beam is formed in the azimuth direction of 10 ° after T time, a high-gain narrow beam is formed in the azimuth direction of 20 ° after T time, and so on. Fig. 5 and 6 exemplarily show only one high-gain narrow beam, and a plurality of directional beams can be formed at a plurality of designated azimuth angles by using the same technical means. For example, when the number of directional antennas is 12, each 6 directional antennas implement one directional beam, and form 2 directional beams together; each 4 directional antennas implement one directional beam, and 3 directional beams are formed jointly. How to set the amplitude value and phase value of each interference signal to form a directional beam (high-gain narrow beam) at a specified azimuth belongs to the prior art, and is not described herein.
Example four: and self-defining a beam interference pattern. Referring to FIG. 7, the circle is marked 0, 30, 60 \8230 \8230indicatingthe azimuth angle in degrees in the horizontal plane. The customized beam interference mode is to customize the width and/or shape of the overall interference beam as a "power pattern of spatial radiation desired to be realized", and to fit an algorithm to make the "actually realized power pattern of spatial radiation" of the overall interference beam of the radio interference system as close as possible to the "power pattern of spatial radiation desired to be realized". Fig. 7 exemplarily shows that the whole radio interference system can achieve high front-end (azimuth 0 ° direction) gain and low back-end (180 ° direction) gain of the whole interference beam, and the front-to-back ratio is about 10dB (within ± 1 dB). After the "power pattern of spatial radiation desired to be achieved" is determined, how to set the amplitude value and the phase value of each path of interference signal so as to make the "power pattern of spatial radiation actually achieved" of the overall interference beam of the radio interference system "approach as much as possible to the" power pattern of spatial radiation desired to be achieved "belongs to the prior art (for example, a genetic algorithm is used), and details are not described herein.
Compared with the prior art, the radio interference system provided by the invention has the following beneficial technical effects.
First, the radio interference system proposed by the present invention has no redundant exciter, transmitting antenna, etc., and the hardware cost is low.
Second, the present invention can implement an omni-directional beam interference pattern with azimuth binding, and thus, less electromagnetic interference is generated to a cooperative system.
Thirdly, the invention can realize the self-defined beam covering capability, can self-define the shape of the power directional diagram of the space radiation expected to be generated, and can form the interference beam which approaches the shape of the power directional diagram of the self-defined space radiation.
Fourthly, the invention can realize high-power integral interference signals when realizing various space radiation power directional diagrams (the four modes).
The transmit configuration of a conventional array antenna is: a power amplifier (power P0), a power divider, an array antenna (gain G). The single-path signal output by the power amplifier is distributed to each antenna unit in the array antenna through the power divider, so that the EIRP = P0 XG can be realized. There are three factors that restrict EIRP: and (1) the power P0 of the single-path power amplifier is difficult to be large. (2) When the array antenna is combined by the power divider, the insertion loss of the connection cable and the power divider is usually large, for example, the insertion loss S1 exists, and then the insertion loss of S1 is already lost in the gain G of the array antenna. (3) The input power to the power splitter is also limited, often in the kilowatt range, which is difficult.
The invention adopts the space power synthesis technology to realize the synthesis of space radiation power (namely, integral interference signals), the principle is that the combination of a multi-path power amplification module and a plurality of directional antennas is adopted, an independent power amplification module is configured behind each directional antenna to improve the power of each path of interference signals, and electromagnetic waves are synthesized in the space to replace multi-path power amplification synthesis and then are input to the antennas in a single-path mode. The advantage of this is that higher EIRP values and more flexible configurations can be achieved, and high power overall interference signals are achieved by high power spatial power combining.
The transmission configuration of the radio interference system provided by the invention is as follows: the power amplifier comprises M paths of power amplification modules (the power of each path is P1) and M paths of directional antennas (the gain of each path is G1), and EIRP = M × P1 × M × G1 can be realized. (1) Because the power of the single-path power amplifier is difficult to be increased, the invention adopts the multi-path power amplifier to input energy to the plurality of directional antennas, thus the energy of the M-path power amplifier is synthesized to the space through the M directional antennas, and the total power amplifier input power which can be realized is M multiplied by P1. Therefore, the invention is basically not limited by the power bearing capacity of a single-path power amplifier and an antenna. (2) The array antenna is not needed to be combined into one port by a power divider (combiner), and is directly connected with the power amplification module through each directional antenna, so that the gain of the array antenna is MxG 1, and the insertion loss of the power divider is avoided. (3) Since the power divider and the change-over switch are not needed, the invention is basically not limited by the power bearing capacity of the power divider and the change-over switch. Theoretically, the combined output of any power can be realized by a spatial power combining mode, that is, the radiation of the integral interference signal of any power is realized.
Fifth, the present invention achieves very fast switching speeds up to the order of microseconds (μ s) when achieving different spatial radiation power patterns. The radio interference system provided by the invention is essentially equivalent to a phased array antenna, and the control commands sent to the attenuator, the phase shifter and each power amplification module in the power amplifier in the beam control network are all in a software form, so the speed is extremely high. The existing communication interference system of 'two sets of systems are used in combination' needs to be connected into a switch, and the network transmission time of the communication interference system is in millisecond (ms) level. The existing communication interference system of switching two antennas for use needs to adopt a high-power switch, and the switching time of the high-power switch is generally slow (10 ms level).
The above are merely preferred embodiments of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A radio interference system is characterized by comprising a transmitting antenna array, a power amplifier, a beam control network and a signal generating module;
the transmitting antenna array is only one layer and consists of more than four constant-amplitude and in-phase directional antennas, all the directional antennas are uniformly distributed on a circumference parallel to a horizontal plane to form a circular antenna array, and the radiation direction of each directional antenna radiates outwards along the radius of the circular antenna array; each directional antenna is used for radiating the same number of interference signals output by the power amplifier to the outside, and power synthesis is carried out in the space to obtain an integral interference signal;
the power amplifier comprises a plurality of power amplification modules with equal amplitude and same phase, and the number of the power amplification modules is equal to that of the directional antennas in the transmitting antenna array; each power amplification module is used for amplifying the interference signals with the same number and specific amplitudes and phases output by the beam control network;
the beam control network comprises a power divider, a plurality of amplitude adjusting modules and a plurality of phase adjusting modules, wherein the number of signals distributed by the power divider, the number of the amplitude adjusting modules and the number of the phase adjusting modules are equal to the number of directional antennas in the transmitting antenna array; the power distributor is used for dividing one path of interference signals generated by the signal generation module into multiple paths, the amplitude adjustment modules respectively adjust the amplitude of the multiple paths of interference signals with the same quantity according to a system instruction, and the phase adjustment modules respectively adjust the phase of the multiple paths of interference signals with the same quantity according to the system instruction so as to generate multiple paths of interference signals with specific amplitude and phase;
the signal generation module is used for generating an interference signal;
the amplitude adjustment of each path of interference signal radiated outside by each directional antenna is only responsible for an amplitude adjustment module in the beam control network, and the phase adjustment of each path of interference signal radiated outside by each directional antenna is only responsible for a phase adjustment module in the beam control network; the switching of the spatially radiated power directional diagram of the overall interference signal is realized only by modifying the amplitude value and/or phase value of each interference signal radiated from each directional antenna to the outside.
2. The radio interference system according to claim 1, wherein said transmitting antenna array is formed by stacking a plurality of layers, each layer is composed of more than four directional antennas with equal amplitude and same phase, all the directional antennas of each layer are uniformly distributed on a circumference parallel to the horizontal plane to form a circular antenna sub-array, and the radiation direction of each directional antenna of each layer radiates outwards along the radius of the circular antenna sub-array of the layer.
3. The radio interference system of claim 2, wherein the circle centers of the circular antenna sub-arrays in different layers are corresponding up and down and have the same radius, the directional antennas in different layers are the same in number, the positions of the directional antennas in different layers are corresponding up and down, the heights between adjacent layers are equal, and the transmitting antenna array is a cylindrical antenna array.
4. The radio interference system of claim 2, wherein the transmit antenna array is one or more of: the circle centers of the circular antenna subarrays on different layers correspond to each other up and down but have different radiuses, the directional antennas on different layers are different in number, the positions of the directional antennas on different layers are staggered up and down, and the heights of adjacent layers are different; the transmitting antenna array forms a spatial stereo array in any form.
5. The radio interference system according to claim 1, wherein when the number of directional antennas included in the transmitting antenna array is M, M is a positive integer greater than or equal to 4; the beam control network comprises a 1-M power divider, M attenuators and M phase shifters; the power divider with 1 minute M divides one path of interference signals generated by the signal generation module into M paths; the M paths of interference signals are respectively subjected to amplitude adjustment through M attenuators, and then are respectively subjected to phase adjustment through M phase shifters, so that M paths of interference signals with specific amplitudes and phases are obtained and are respectively sent to M directional antennas in the transmitting antenna array.
6. The radio interference system according to claim 1, wherein each directional antenna in the transmitting antenna array keeps constant amplitude and in phase, so as to realize signal radiation with constant amplitude and in phase; and all power amplification modules in the power amplifier keep the same amplitude and the same phase, namely, the power amplification with the same amplitude and the same phase is realized.
7. The radio interference system of claim 1, wherein when the radio interference system operates in the omni-directional beam interference mode, the overall interference signal is completely covered in 360 ° omni-directionally in a horizontal plane, forming a circular coverage area, and the power values at the edges of the coverage area are substantially the same.
8. The radio interference system of claim 1, wherein when the radio interference system operates in the omni-directional beam interference mode with azimuth binding, the overall interference signal forms one or more nulls at a specified azimuth, with complete coverage of angles except for null positions; the azimuth binding means that no interference signal is radiated in a specific area; the zero point refers to a position of a non-interference signal.
9. The radio interference system of claim 1, wherein when the radio interference system operates in a directional beam interference mode, the overall interference signal forms one or more high-gain narrow beams at specified azimuth angles.
10. The radio interference system of claim 1, wherein when the radio interference system operates in the custom beam interference mode, the power pattern of the spatial radiation actually achieved by the overall interference signal approximates the custom power pattern of the spatial radiation desired to be achieved.
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| CN202211132796.7A CN115567147A (en) | 2022-09-13 | 2022-09-13 | Radio interference system |
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| CN202211132796.7A CN115567147A (en) | 2022-09-13 | 2022-09-13 | Radio interference system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117155513A (en) * | 2023-10-30 | 2023-12-01 | 南京新频点电子科技有限公司 | Sparse array communication interference device |
| CN117579112A (en) * | 2024-01-17 | 2024-02-20 | 嘉兴诺艾迪通信科技有限公司 | Spherical radio interference system capable of self-correcting in real time |
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2022
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117155513A (en) * | 2023-10-30 | 2023-12-01 | 南京新频点电子科技有限公司 | Sparse array communication interference device |
| CN117579112A (en) * | 2024-01-17 | 2024-02-20 | 嘉兴诺艾迪通信科技有限公司 | Spherical radio interference system capable of self-correcting in real time |
| CN117579112B (en) * | 2024-01-17 | 2024-04-09 | 嘉兴诺艾迪通信科技有限公司 | Spherical radio interference system capable of self-correcting in real time |
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