KR100887767B1

KR100887767B1 - Radio jamming apparatus in response to frequency of radio signal

Info

Publication number: KR100887767B1
Application number: KR1020080081496A
Authority: KR
Inventors: 양경성
Original assignee: 외길기업 주식회사
Priority date: 2008-08-20
Filing date: 2008-08-20
Publication date: 2009-03-12

Abstract

The present invention relates to a frequency sensitive radio wave disturbance device, and provides a radio wave disturbance device for generating a radio wave disturbance signal in response to a frequency of a radio signal received over a wide band.

Radio wave disturbance apparatus according to an embodiment of the present invention, each of the plurality of antennas for transmitting and receiving signals of the set frequency band; A signal detector for detecting which one of the plurality of antennas is received, a frequency meter for measuring the frequency of the wireless signal received through the antenna detected by the signal detector, a voltage controlled oscillator, and a set frequency band A noise generator for generating a noise signal having a different signal pattern, a modulation controller for controlling the voltage controlled oscillator to oscillate a signal having a frequency of the radio signal measured by the frequency meter, and a noise signal corresponding to a frequency band of the radio signal A controller including a noise controller for controlling the noise generator to generate a noise generator; And a modulator for modulating the noise signal generated by the noise generator to a frequency of the signal generated by the voltage controlled oscillator to generate a radio disturbance signal and to propagate the radio signal through the received antenna.

Description

Frequency sensitive radio wave jamming device {RADIO JAMMING APPARATUS IN RESPONSE TO FREQUENCY OF RADIO SIGNAL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave disturbance technique, and more particularly, to a radio wave disturbance device that automatically disturbs a radio signal in response to a frequency of a received radio signal.

Radio wave jamming device is a device that generates a signal similar to the radio signal used for communication so that communication is not normally performed. The radio wave jamming device is a device for preventing the normal communication such as R / C, mobile communication, wireless LAN, radar, GPS, military satellite communication. For example, when a user of a mobile phone is located in a public place such as a theater, communication is interrupted by radiating strong radio waves over all frequency bands used for communication of the mobile phone.

As described above, the conventional radio wave disturbance device is applied to disturb the communication in a specific frequency band. Accordingly, when the conventional radio wave jammer is used over a wide band, the efficiency of the RF output decreases. Therefore, the conventional radio wave disturbance device has a problem that its use range is narrow.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and proposes a radio wave disturbance device which automatically generates a radio wave disturbance signal having a corresponding frequency by automatically responding to a frequency of a radio signal received over a broadband. .

According to an aspect of the present invention, there is provided a frequency sensitive radio wave disturbance device, comprising: a plurality of antennas for transmitting and receiving signals in a set frequency band; A plurality of wireless receivers and a plurality of wireless transmitters, which are connected in a one-to-one manner to each of the plurality of antennas, for receiving a radio signal and transmitting a jammer signal through the connected antenna; A signal detector which detects which one of the plurality of wireless receivers is received and generates and transmits a signal indicating that the wireless signal has been received from the corresponding wireless receiver to the controller when reception of the wireless signal is detected; A reception selector configured to select and connect a wireless receiver that receives the radio signal from the plurality of wireless receivers under control of the controller; A frequency measurer connected to a wireless receiver selected by the reception selector and measuring a frequency of the wireless signal received by the wireless receiver connected to the wireless receiver; An amplitude measurer connected to the frequency measurer, the amplitude measurer measuring an amplitude of the radio signal received by the radio receiver and transmitting the amplitude to the controller; A noise generator capable of generating a noise signal having a different signal pattern for each set frequency band under the control of the controller; A modulator configured to generate the wave jamming signal by modulating the noise signal generated from the noise generator to a frequency measured by the frequency measuring device; A voltage controlled oscillator which oscillates a signal having a frequency measured by the frequency meter and outputs the signal to the modulator under control of the controller; A transmission selector configured to select a wireless transmitter to transmit the jammer signal output from the modulator from among the plurality of wireless transmitters and to connect with the modulator; And when the signal is input from the signal detector, controlling the reception selector to select a wireless receiver connected to the frequency meter among the plurality of wireless receivers, and as a wireless transmitter connected to the modulator among the plurality of wireless transmitters. And controlling the transmission selector to select a wireless transmitter connected to the antenna from which the radio signal is received, and if the amplitude of the radio signal measured by the amplitude meter is less than or equal to a set amplitude, controlling the transmission selector to block transmission of a jammer signal. A noise controller for controlling the noise generator to generate a noise signal having a signal pattern corresponding to a frequency band of the radio signal received from the radio receiver in accordance with a signal input from the signal detector, and in the frequency measurer Measured It includes the control unit comprising a modulation control section for controlling the voltage controlled oscillator to oscillate a signal of the wave number.

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As described above, according to an embodiment of the present invention, by having a plurality of antennas capable of receiving a wireless signal over a wide band, by generating and propagating a radio wave disturbance signal for each wireless signal received through the plurality of antennas In addition, radio frequency disturbance signals can be generated automatically in response to the frequency of radio signals received over a wide band.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention; In the following description of the present invention, if it is determined that detailed descriptions of related well-known functions or configurations may obscure the gist of the present invention, the detailed description will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

1 is a view showing the configuration of a radio wave jamming apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the apparatus for disturbing radio waves according to an embodiment of the present invention includes a plurality of antennas ANT 1, ANT n, a signal detector 10, a frequency meter 12, and voltage control. An oscillator 15, a noise generator 16, a controller 17 and a modulator 14 are included.

The plurality of antennas ANT 1, ANT n transmits and receives radio signals of frequency bands set among the wide frequency bands. In this case, the wideband frequency band may include all frequency bands used for current communication or frequency bands not used for current communication but may be used for future communication. For example, for the plurality of antennas, the antenna ANT 1 may be used for mobile communication. At this time, the use frequency band of the mobile communication is 800 ~ 2200 [MHz]. And, the antenna ANT n can be used for the radar. The frequency band of the radar is 2.9-3.1 [GHz] for the S band and 9.3 to 9.5 [GHz] for the X band. The number of the plurality of antennas can be adjusted according to the use in which the radio wave disturbance device according to the embodiment of the present invention is used.

The signal detector 10 detects whether a radio signal is received through any one of the plurality of antennas ANT 1, ANT n. That is, the signal detector 10 detects whether a radio signal is received from any one of the radio receivers 2, ..., 7. The frequency meter 12 measures the frequency of the received radio signal detected by the signal detector 10. This frequency meter 12 may be implemented using a frequency counter.

The voltage controlled oscillator 15 generates a signal having a frequency set according to the input voltage and transmits the signal to the modulator 14. The noise generator 16 generates a noise signal having a different signal pattern for each set frequency band and transmits the noise signal to the modulator 14. That is, the noise generator 16 performs soft switching to generate noise signals having different signal patterns for each frequency band.

The controller 17 may be implemented as a digital signal processor (DSP) or a field programmable gate array (FPGA), and includes a signal controller 18, a noise controller 19, and a modulation controller 20. When the radio signal is received by the signal detector 10, the signal controller 18 generates a cutoff signal and transmits the cutoff signal to the transmission selector 5 and the reception selector 11. This is to block the propagation of the radio wave disturbance signal through antennas other than the antenna from which the radio signal is received, to receive the radio signal through the antenna from which the radio signal is received, and to transmit the radio wave disturbance signal. That is, the radio wave disturbance signal propagates only through the antenna from which the radio signal is received, and the radio signals can be received through the antenna from which the radio signal is received.

The reception selector 11 maintains a connection by switching on a connection switch (not shown) of the radio receiver and the frequency meter 12 that have received the radio signal according to the blocking signal received from the controller 17, and the remaining radio receiver. And the connecting switches (not shown) of each of the frequency meter 13 are switched off.

The transmission selector 5 switches on and connects a connection switch (not shown) between the radio transmitter and the modulator 14 connected to the antenna from which the radio signal is received, according to the cutoff signal received from the controller 17, and the rest. Connection switches (not shown) between the wireless transmitters and the modulator 14 are switched off to disconnect the connection.

Thereafter, the modulation control unit 20 of the control unit 17 controls the voltage controlled oscillator 15 to oscillate a signal having a frequency of the radio signal measured by the frequency measuring unit 12. At the same time, the noise controller 19 of the controller 17 controls the noise generator 16 to generate a noise signal corresponding to the frequency band of the radio signal measured by the frequency measurer 12.

Accordingly, the voltage controlled oscillator 15 generates a signal having a frequency corresponding to the voltage applied from the controller 17 and transmits the signal to the modulator 14. The noise generator 16 generates a noise signal corresponding to the frequency band of the radio signal measured by the frequency detector 12 and transmits the noise signal to the modulator 14. The modulator 14 generates a radio wave disturbance signal by modulating the noise signal generated by the noise generator 16 to the frequency of the signal generated by the voltage controlled oscillator 15, and propagates the radio signal through the received antenna. .

That is, the modulator 14 transmits the radio wave disturbance signal to the radio transmitter connected to the antenna from which the radio signal is received. Accordingly, the wireless transmitter modulates the radio wave disturbance signal received from the modulator 14 to the frequency of the signal generated by the voltage controlled oscillator (3, ..., 8) connected thereto to the air through the antenna. Spread. In this case, the wireless transmitters 4,.., 9 perform a function of modulating the radio wave disturbance signal generated by the modulator 14. On the contrary, the radio receivers 2, ..., 7 perform a function of demodulating the radio signals received through the antennas ANT 1, ANT n. On the other hand, the circulator (1, ..., 6) removes the power flowing in the reverse direction when receiving the radio signal and the transmission of the radio wave disturbance signal through the antenna (ANT 1, ..., ANT n).

As such, by propagating a jamming signal having a frequency of the received radio signal to prevent the reception of the radio signal normally, it may interfere with normal communication.

Furthermore, the wireless signal disturbance apparatus according to the embodiment of the present invention may further include an amplitude detector 13. The amplitude measuring unit 13 measures whether the amplitude of the received radio signal detected by the signal detector 10 is less than or equal to the set amplitude using the amplitude information of the radio signal set in each of the set frequency bands, and controls the measurement result. To transmit.

Accordingly, the signal controller 18 of the controller 17 blocks transmission of the radio disturbance signal through the antenna from which the radio signal is received if the amplitude of the radio signal measured by the amplitude measuring device 13 is less than or equal to the set amplitude. At this time, if the amplitude of the received radio signal is less than the set amplitude, the signal controller 18 determines the received radio signal as noise. Accordingly, the signal controller 18 controls the transmission selector 5 to block the connection between the antenna-side radio transmitter and the modulator 14 where the radio signal is received. Accordingly, unnecessary power consumption can be reduced by not generating unnecessary radio wave disturbance signals in response to such noise.

The operation of the radio wave disturbance device having such a configuration will be described.

Hereinafter, the radar system composed of two X band antennas ANT 1 and S band antenna ANT n will be described by applying to the radio wave disturbance device according to an embodiment of the present invention.

The signal detector 10 detects whether a radar signal is received through one of the X band antenna ANT 1 and the S band antenna ANT n. In this case, it is assumed that the radar signal is received through the antenna ANT 1. The signal detector 10 provides the controller 17 that a radar signal has been received through the antenna ANT 1. Accordingly, the signal controller 18 of the controller 17 transmits a cutoff signal to the reception selector 11 and the transmission selector 5. Accordingly, the reception selector 11 switches on a connection switch (not shown) of the radio receiver 2 and the frequency meter 12 in which the radar signal is received, and connects the radio receiver 2 and the frequency meter 12 to each other. Keep it. At the same time, the transmission selector 5 is a connection switch (not shown) between the radio transmitter 4 and the modulator 14 connected to the antenna ANT 1 on which the radar signal is received according to the blocking signal received from the controller 17. ) Is switched on and connected, and the connection switches (not shown) between the wireless transmitter 9 and the modulator 14 are switched off to disconnect the connection.

The frequency measurer 12 measures the frequency of the radar signal received through the antenna ANT 1 and transmits the frequency to the controller 17. The modulation control unit 20 of the control unit 17 controls the voltage controlled oscillator 15 to oscillate at the frequency of the radar signal received from the frequency measuring unit 12. At the same time, the noise control unit 19 of the control unit 17 controls the noise generator 16 to generate a noise signal corresponding to the frequency band of the radar signal measured by the frequency measuring unit 12.

Accordingly, the voltage controlled oscillator 15 generates a signal having a frequency corresponding to the voltage applied from the controller 17 and transmits the signal to the modulator 14. The noise generator 16 generates a noise signal corresponding to the frequency band of the radar signal measured by the frequency measurer 12 and transmits the noise signal to the modulator 14. The modulator 14 generates a radar disturbance signal by modulating the noise signal generated by the noise generator 16 to the frequency of the signal generated by the voltage controlled oscillator 15 and propagates to the air through the antenna ANT 1. .

That is, the modulator 14 transmits the radar disturbance signal to the wireless transmitter 4 connected to the antenna ANT 1. Accordingly, the radio transmitter 4 modulates the radar disturbance signal received from the modulator 14 to the frequency of the signal generated by the voltage controlled oscillator 3 and propagates to the air through the antenna ANT 1.

As such, by propagating the radar disturbance signal having the frequency of the received radar signal to prevent the reception of the radar can normally interfere with normal communication.

Meanwhile, the amplitude detector 13 measures whether the amplitude of the radar signal received through the antenna ANT 1 is equal to or less than the set amplitude, and transmits the measurement result to the controller 17.

Accordingly, the signal controller 18 of the controller 17 blocks transmission of the radar disturbance signal through the antenna ANT 1 when the amplitude of the radar signal measured by the amplitude measuring device 13 is less than or equal to the set amplitude. This is because the signal received through the antenna ANT 1 may be noise. Accordingly, the signal controller 18 of the controller 17 controls the transmission selector 5 so that the connection between the wireless transmitter 4 and the modulator 14 is interrupted. Accordingly, unnecessary power consumption can be reduced by avoiding unnecessary radar disturbance signals in response to such noise.

As described above, it can be seen that the radio wave disturbance device according to the embodiment of the present invention generates a radar disturbance signal in response to the frequency of the received radar signal applied to the radar device.

In addition, the radio wave jamming apparatus according to an embodiment of the present invention can be applied to and used in the mobile communication jamming device for blocking the call of the mobile communication terminal. Since there is a different frequency band FA for each base station, only mobile communication waves of the corresponding frequency band can be detected, thereby making it possible to more effectively block the call of the mobile communication. Most of the current mobile communication jammers are poor in efficiency because they propagate the entire mobile communication frequency band regardless of FA. On the contrary, the mobile communication jammer having the jammer according to the embodiment of the present invention generates a mobile communication jammer signal for every mobile radio wave signal received in a frequency band set in each of a plurality of antennas of the mobile communication frequency band. By propagating by means of radio waves, the mobile communication radio wave disturbance signal can be automatically generated in response to the mobile communication radio wave signal received over the mobile communication frequency band.

Furthermore, the radio wave jammer according to the embodiment of the present invention can be applied to and used in the GPS jammer for disturbing the reception of the GPS signal. That is, the GPS jammer with the radio jammer according to the embodiment of the present invention can be used to make it impossible to identify the location of the weapon or allies capable of hitting the exact position of the allies.

2 is a flowchart of a method for generating a radio wave disturbance signal of a radio wave disturbance device according to an embodiment of the present invention.

As shown in FIG. 2, the controller 17 checks whether the radio signal has been received through the signal detector 10 in a standby state for a predetermined time (S1 and S2). In this case, the standby state indicates a state in which the signal detector 10 is enabled to detect reception of a radio signal at a set time.

When the wireless signal is received for the time set by the signal detector 10, the controller 17 cuts off the connection between the wireless signal transmitter and the modulator 14 connected to the antenna from which the wireless signal is received through the transmission selector 5. In order to prevent the noise signal generated by the modulator 14 from flowing into the wireless signal transmitter, the wireless signal transmitter is disabled (S3). That is, the controller 17 prevents the radio wave disturbance signal from propagating through the radio signal transmitter connected to the antenna from which the radio signal is received. At the same time, the controller 17 applies a bias voltage to the amplifying stage (not shown) of the radio signal transmitter so that the radio wave disturbance signal generated by the input of the noise signal generated by the modulator 14 is transmitted to the air. Maintain state.

Thereafter, the controller 17 checks whether the radio signal is received within the set signal period (S4), and if so, checks whether the amplitude of the radio signal detected by the amplitude detector 13 is less than or equal to the set amplitude (S5). At the same time, the frequency of the radio signal received through the frequency measuring device 12 is measured and transmitted to the controller 17. If the amplitude of the received radio signal is less than or equal to the set amplitude, the controller 17 determines the received radio signal as a noise signal and maintains the radio signal transmitter connected to the antenna from which the radio signal is received (S6). Thereafter, the controller 17 proceeds to step S2 to check whether the radio signal is received for a predetermined time.

On the other hand, if the amplitude of the received radio signal is greater than or equal to the set amplitude, the controller 17 disables the radio signal receiver connected to the antenna that has received the radio signal, and enables the radio signal transmitter connected to the antenna that has received the radio signal. . That is, the controller 17 generates a cutoff signal and transmits the cutoff signal to the reception selector 11 and the transmission selector 5. Accordingly, the reception selector 11 switches off the connection switch (not shown) of the radio receiver and the frequency meter 12 that have received the radio signal according to the blocking signal received from the controller 17, and the other radio receivers. The connection switch (not shown) of each of the and the frequency meter 13 is switched on to maintain the connection. Meanwhile, the transmission selector 5 switches on and connects a connection switch (not shown) between the radio transmitter and the modulator 14 connected to the antenna from which the radio signal is received according to the blocking signal received from the controller 17. In addition, the connection is switched off (not shown) between the remaining radio transmitters and the modulator 14 to disconnect the connection.

Thereafter, the controller 17 controls the voltage controlled oscillator 15 to oscillate a signal having a frequency of the radio signal measured by the frequency meter 12. At the same time, the controller 17 controls the noise generator 16 to generate a noise signal corresponding to the frequency band of the radio signal measured by the frequency meter 12.

Accordingly, the voltage controlled oscillator 15 generates a signal having a frequency corresponding to the voltage applied from the controller 17 and transmits the signal to the modulator 14. The noise generator 16 generates a noise signal corresponding to the frequency band of the radio signal measured by the frequency detector 12 and transmits the noise signal to the modulator 14. The modulator 14 modulates the noise signal generated by the noise generator 16 to the frequency of the signal generated by the voltage controlled oscillator 15 to generate a radio wave disturbance signal, and propagates the radio signal through the received antenna. (S7).

3 is a view showing the configuration of a radio wave jamming apparatus according to another embodiment of the present invention.

As shown in FIG. 3, the apparatus for disturbing radio waves according to another embodiment of the present invention includes a frequency measuring unit 34, a controller 40, a noise generator 39, a voltage controlled oscillator 38, and a modulator 37. It includes.

The frequency meter 34 measures the frequency of the radio signal received through the antenna ANT. This frequency meter 34 may be implemented using a frequency counter. At this time, the antenna ANT transmits and receives a radio signal of a frequency band of the set band. For example, if the set band is the frequency band of mobile communication, 800 ~ 2200 [MHz], 2.9 ~ 3.1 [GHz] for the S band in the radar frequency band, and 9.3 ~ 9.5 [for the X band. GHz].

The voltage controlled oscillator 38 generates a signal having a frequency set according to the input voltage and transmits the signal to the modulator 37. The noise generator 38 generates a noise signal having a different signal pattern for each frequency of the received radio signal and transmits the noise signal to the modulator 37. That is, the noise generator 38 performs soft switching to generate a noise signal having a different signal pattern for each frequency of the received wireless signal.

The controller 17 may be implemented as a digital signal processor (DSP) or a field programmable gate array (FPGA), and when a wireless signal is received through an antenna ANT, the frequency of the wireless signal measured by the frequency meter 34. The voltage controlled oscillator 38 is controlled to oscillate a signal having At the same time, the controller 40 controls the noise generator 39 to generate a noise signal having a different signal pattern for each frequency of the radio signal measured by the frequency meter 34.

Accordingly, the voltage controlled oscillator 39 generates a signal having a frequency corresponding to the voltage applied from the controller 40 and transmits the signal to the modulator 37. The noise generator 39 generates a noise signal corresponding to the frequency of the radio signal measured by the frequency detector 34 and transmits the noise signal to the modulator 37. The modulator 37 modulates the noise signal generated by the noise generator 39 to the frequency of the signal generated by the voltage controlled oscillator 38 to generate a radio wave disturbance signal to propagate through the antenna ANT.

That is, the modulator 37 transmits the radio wave disturbance signal to the radio transmitter 34 connected to the antenna ANT. Accordingly, the radio transmitter 34 modulates the radio wave disturbance signal received from the modulator 37 to the frequency of the signal generated by the voltage controlled oscillator 33 and propagates to the air through the antenna ANT. In this case, the wireless transmitter 34 modulates the radio wave disturbance signal generated by the modulator 37. On the contrary, the wireless receiver 32 demodulates a radio signal received through the antenna ANT. Meanwhile, the circulator 31 removes power flowing in the reverse direction when the wireless signal is received and the radio wave disturbance signal is transmitted through the antenna ANT.

Furthermore, the wireless signal disturbance apparatus according to another embodiment of the present invention may further include an amplitude detector 35. The amplitude measuring unit 35 measures whether the amplitude of the radio signal received through the antenna ANT is equal to or less than the set amplitude, and transmits the measurement result to the controller 40.

Accordingly, the control unit 40 blocks transmission of the radio disturbance signal through the antenna ANT when the amplitude of the radio signal measured by the amplitude measuring unit 35 is less than or equal to the set amplitude. At this time, the controller 40 determines that the received radio signal is noise when the amplitude of the received radio signal is less than or equal to the set amplitude. Accordingly, the controller 40 disables the input of the wireless transmitter 24 so as not to introduce a radio disturbance signal, or blocks the application of the bias voltage to the amplifying terminal (not shown) of the wireless transmitter 34, thereby preventing the antenna ANT. Do not propagate the radio disturbance signal through. Accordingly, unnecessary power consumption can be reduced by not generating unnecessary radio wave disturbance signals in response to such noise.

As described above, the radio wave disturbance device according to another embodiment of the present invention may generate a radar disturbance signal in response to the frequency of the radar signal received by being applied to the radar device as in the embodiment of the present invention. The same applies to the mobile communication jammer and the GPS jammer. Therefore, description thereof will be omitted.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a view showing the configuration of a frequency-sensitive radio wave jamming device according to an embodiment of the present invention.

2 is a diagram illustrating a method for generating a radio wave disturbance signal of a frequency sensitive radio wave jammer according to an embodiment of the present invention.

3 is a view showing the configuration of a frequency-sensitive radio wave disturbance device according to another embodiment of the present invention.

Claims

A plurality of antennas each transmitting and receiving a signal having a set frequency band;

A plurality of wireless receivers and a plurality of wireless transmitters, which are connected in a one-to-one manner to each of the plurality of antennas, for receiving a radio signal and transmitting a jammer signal through the connected antenna;

A signal detector which detects which one of the plurality of wireless receivers is received and generates and transmits a signal indicating that the wireless signal has been received from the corresponding wireless receiver to the controller when reception of the wireless signal is detected;

A reception selector configured to select and connect a wireless receiver that receives the radio signal from the plurality of wireless receivers under control of the controller;

A frequency measurer connected to a wireless receiver selected by the reception selector and measuring a frequency of the wireless signal received by the wireless receiver connected to the wireless receiver;

An amplitude measuring device connected to the frequency measuring device, the amplitude measuring device measuring an amplitude of the wireless signal received by a wireless receiving unit and transmitting the amplitude to the controller;

A noise generator capable of generating a noise signal having a different signal pattern for each set frequency band under the control of the controller;

A modulator configured to generate the wave jamming signal by modulating the noise signal generated from the noise generator to a frequency measured by the frequency measuring device;

A voltage controlled oscillator which oscillates a signal having a frequency measured by the frequency meter and outputs the signal to the modulator under control of the controller;

A transmission selector configured to select a wireless transmitter to transmit the jammer signal output from the modulator from among the plurality of wireless transmitters and to connect with the modulator; And

When a signal is input from the signal detector, the reception selector is controlled to select a wireless receiver connected to the frequency meter among the plurality of wireless receivers, and the wireless transmitter is connected to the modulator among the plurality of wireless transmitters. A signal for controlling the transmission selector to select a wireless transmitter connected to the antenna from which the radio signal is received, and to block transmission of the jammer signal when the amplitude of the radio signal measured by the amplitude measuring instrument is less than or equal to a set amplitude; A noise controller for controlling the noise generator to generate a noise signal having a signal pattern corresponding to a frequency band of the radio signal received from the radio receiver according to a signal input from the signal detector; One week To oscillate a signal of the number of the control unit comprising a modulation control section for controlling the voltage-controlled oscillator

Frequency sensitive radio wave disturbance device comprising a.

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A radar disturbance device having a frequency sensitive radio wave disturbance device according to claim 1.

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