JP2001086101A - Disturbing radio wave generator for concealed microphone or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disturbing radio wave generator that almost requires no usual electricity consumption in order to be driven in matching with detection of a received radio wave such as a concealed microphone, employs a battery for its power supply, is easily carried and is adaptable to a TV signal and a spread spectrum signal. SOLUTION: The disturbing radio wave generator is provided with a reception antenna 1 that receives a radio wave form a concealed microphone or the like, an amplifier circuit 2 that amplifies the received radio wave signal from the concealed microphone or the like by the reception antenna 1, a phase conversion circuit 3 that converts a phase of a radio wave signal amplified by the amplifier circuit 2, an output circuit D/A converter that outputs the radio wave signal whose phase is converted by the phase conversion circuit 3, and a transmission antenna 6 that transmits an output signal of the output circuit 4. Furthermore, a random signal generating circuit 6 that changes an output signal of the phase conversion circuit 3 or generates a noise is connected to the phase conversion circuit 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave generator for interfering with radio waves such as eavesdropping and voyeurism, and more particularly, to receiving radio waves such as eavesdropping and voyeurism and utilizing received radio waves. The present invention relates to a jammer generating apparatus for generating jammer.

[0002]

2. Description of the Related Art In recent years, devices for eavesdropping, voyeurism, etc. have been miniaturized due to the advancement of technology, and the use of a large number of radio wave frequencies and modulation methods has made it difficult to discover them. This type of conventional jammer generator generates a jammer for a fixed frequency radio wave transmitted from a device such as eavesdropping and voyeurism. It measured and transmitted jamming radio waves of the same frequency.

[0003]

For this reason, if the frequency of the received radio waves for eavesdropping, voyeurism and the like and the frequency of the interfering radio waves to be transmitted deviate, it becomes useless, and the conventional interfering radio wave generator must be constantly driven. However, it consumes a large amount of power, requires a power source, and is not suitable for being carried or moved, and has a problem.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, as a result of study, a receiving antenna for receiving radio waves from a wiretap, etc., an amplifier circuit for amplifying a radio wave signal received from the wiretap, etc., received by the receiving antenna, A phase conversion circuit for converting the phase of the radio signal amplified by the circuit, an output circuit for outputting the radio signal whose phase has been converted by the phase conversion circuit, and a transmitting antenna for transmitting the output signal of the output circuit. In addition, a random signal generation circuit for changing an output signal or generating noise is connected to the phase conversion circuit.

[0005]

According to the present invention, there is provided a device for generating an interference wave such as an eavesdropper, which receives a transmission antenna from an eavesdropper or the like, an amplifier circuit, a phase conversion circuit, an output circuit, and transmits the interference wave. Since it has a transmitting antenna, it amplifies the received radio wave and outputs the phase-converted interfering radio wave from the transmitting antenna when receiving the transmitted radio wave from the eavesdropper, etc. , Such as a voyeur camera.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 1 is a block diagram of an embodiment of an interfering radio wave generator such as an eavesdropper according to the present invention, and FIG. 2 is an explanatory diagram for explaining an embodiment of an interfering radio wave generator such as an eavesdropper of the present invention. FIG. 3 is an explanatory diagram for explaining a next embodiment of the jamming wave generator such as a bugging device of the present invention.

[0008] The present invention relates to a radio wave generator for interfering with radio waves such as eavesdropping and voyeurism.
The present invention relates to an interfering radio wave generating apparatus that receives radio waves such as eavesdropping and voyeurism and generates interfering radio waves using the received radio waves. Antenna 1 for receiving a radio wave of a receiver, an amplifying circuit 2 for amplifying a radio signal of an eavesdropper or the like received by the receiving antenna 1, and a phase for converting the phase of the received radio signal amplified by the amplifying circuit 2 It comprises a conversion circuit 3, an output circuit 4 for outputting a radio signal whose phase has been converted by the phase conversion circuit 3, and a transmitting antenna 5 for transmitting an output signal of the output circuit 4.

Further, the interfering radio wave generating device for eavesdropping, voyeurism and the like according to the second aspect is the same as the interfering radio wave generating device for eavesdropping and voyeur shooting of the first aspect, and further outputs an output signal to the phase conversion circuit 3. A random signal generating circuit 6 for changing or generating noise is connected.

That is, the receiving antenna 1 of the interfering radio wave generating apparatus for eavesdropping, voyeurism, etc. of the present invention captures a weak radio wave transmitted from an apparatus for eavesdropping, voyeurization, etc., and is generally used. VHS. It has a broadband receiver corresponding to a frequency band such as the UHF band, and transmits a received radio wave of an eavesdropper or the like to an amplifier circuit 2 described later.

The amplification circuit 2 is a high-frequency amplification amplifier or the like, which amplifies a weak reception radio signal received by the reception antenna 1 and transmits the signal to a phase conversion circuit 3 described later.

Next, the phase conversion circuit 3 converts the phase of a radio signal received from the receiving antenna 1 and amplified by the amplifier circuit 2 from a device such as eavesdropping and voyeurism, and is shown in FIG. As described above, the radio wave received by the receiving antenna 1 is, for example,
As shown in FIG. 2B, the phase is converted by 90 degrees.

Next, as shown in FIG. 2 (C), the output circuit 4 converts the received radio wave signal and the phase
The signal is superimposed on the radio signal that has been phase-converted and input, and further transmitted to a transmitting antenna 5 described later.

The transmitting antenna 5 transmits a radio signal from the output circuit 4, that is, a receiving antenna for receiving a radio wave from a device such as eavesdropping or voyeur to perform eavesdropping or voyeuring. As shown in FIG. 2 (C), the device receives the original radio wave from the wiretap and the like and the radio wave out of phase at the same time, and cannot achieve the object of eavesdropping, voyeurism and the like. .

Further, the random signal generation circuit 6 is connected to the phase conversion circuit 3, and the phase conversion circuit 3 shifts the phase of the received radio wave by 180 degrees and changes the output radio wave. As shown in FIG. 3A, the radio wave received by the receiving antenna 1 is intermittently turned off, for example, as shown in FIG. 3B, and the output circuit 4 is provided as shown in FIG. As shown in the figure, the received radio wave signal and the radio wave signal whose phase has been converted by 180 degrees are further intermittently erased and transmitted.

Further, the random signal generation circuit 6 is also capable of weakening the output signal of the phase conversion circuit 3 and generating noise. The random signal generation circuit 6 converts or changes the phase of the received input radio wave signal. In this case, noise that is confused with the radio wave of the radio wave generating source is generated to obstruct radio waves such as eavesdropping and voyeurism.

The apparatus for generating an interference radio wave such as an eavesdropping device of the present invention starts driving when a received radio wave signal reaches a certain strength or more when approaching a device for eavesdropping, voyeurism, etc., thereby saving power holding and driving. Sometimes it is possible to detect the driving state by attaching an indicator or the like, and the amplifier circuit 2 captures and transmits the output radio wave as an input radio wave. And a differential amplifier subtracting from the input may be used.

[0018]

According to the above-described structure, the interfering radio wave generating device such as a wiretap according to the present invention can be provided at a low price because it can cope with a wide frequency band, and there is no need to adjust the frequency. Because it is driven in accordance with the detection of the battery, it consumes almost no electricity and can use a battery as a power source, is easy to carry, and can also handle TV signals and spread spectrum signals. It is a highly practical invention.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a jamming wave generating device such as a wiretap according to the present invention.

FIG. 2 is an explanatory diagram for explaining an embodiment of a jamming wave generator such as an eavesdropping device of the present invention.

FIG. 3 is an explanatory diagram for explaining a next embodiment of a jamming wave generator such as an eavesdropping device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 reception antenna 2 amplification circuit 3 phase conversion circuit 4 output circuit 5 transmission antenna 6 random signal generation circuit

Claims (2)

[Claims] A receiving antenna for receiving radio waves from a wiretap, etc., an amplifying circuit for amplifying a radio signal from the wiretap, etc. received by the receiving antenna, and converting the phase of the received radio signal amplified by the amplifying circuit. An eavesdropping device comprising: a phase conversion circuit for causing the phase conversion circuit to output a radio signal whose phase has been converted by the phase conversion circuit; and a transmitting antenna for transmitting an output signal of the output circuit. Jammer generator. 2. The apparatus according to claim 1, wherein a random signal generating circuit for changing an output signal or generating noise is connected to the phase conversion circuit.