CN202435415U - Wireless network radio frequency jammer based on USB (Universal Serial Bus) interface - Google Patents
Wireless network radio frequency jammer based on USB (Universal Serial Bus) interface Download PDFInfo
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- CN202435415U CN202435415U CN2012200254362U CN201220025436U CN202435415U CN 202435415 U CN202435415 U CN 202435415U CN 2012200254362 U CN2012200254362 U CN 2012200254362U CN 201220025436 U CN201220025436 U CN 201220025436U CN 202435415 U CN202435415 U CN 202435415U
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- controlled oscillator
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Abstract
The utility model discloses a wireless network radio frequency jammer based on a USB (Universal Serial Bus) interface, which comprises a USB interface, a voltage stabilizing circuit, a swept-frequency signal generating circuit, a swept-frequency voltage regulating circuit, a voltage-controlled oscillator, an amplifier and an antenna. The USB interface supplies work voltage to the voltage stabilizing circuit and the amplifier; the voltage stabilizing circuit supplies work voltage to the swept-frequency signal generating circuit and the voltage-controlled oscillator; the swept-frequency signal generating circuit supplies reference control voltage with a sawtooth waveform to the voltage-controlled oscillator and the reference control voltage is input into the swept-frequency voltage regulating circuit; the input reference control voltage is subjected to pressure dividing by the swept-frequency voltage regulating circuit and is output to the voltage-controlled oscillator; and a radio frequency jamming signal generated by the voltage-controlled oscillator is amplified by the amplifier and radiated out through the antenna. With the adoption of the wireless network radio frequency jammer based on the USB interface, the structure is simple, and downlink signals of a wireless internet and a mobile internet in the conventional mainstream are jammed to prevent secrete leakage of information of terminals such as computers and notebooks. through the wireless internet and the mobile internet.
Description
Technical field
The utility model relates to a kind of USB interface-based wireless network radio frequency interference device.
Background technology
Interference unit to mobile communication is mainly used in the interference to all kinds of system mobile phones (like GSM, CDMA, WCDMA, TD_SCDMA, PHS) in the market; Mobile phone speech, short message service in the blocking effect zone prevent the interior mistake through mobile phone of particular range, steal secret information.Interference unit is generally bench device, adopts 220V Alternating Current Power Supply, external antenna, and volume is bigger, and interference power is big, operating distance is far away, and is also bigger to the radiation of personnel and miscellaneous equipment.
Along with the development of wireless Internet (WLAN), mobile Internet (CDMA2000, WCDMA, TD_SCDMA), prefectures and cities are all building digital city, wisdom city, and terminals such as mobile phone, notebook computer can be inserted wireless Internet, mobile Internet easily.On the other hand; Various activities of hacker on the Internet also expand on wireless Internet, the mobile Internet accordingly; For being connected to terminals such as mobile phone and notebook computer on wireless Internet, the mobile Internet; Even except physical isolation on terminals such as mobile phone and notebook computer through software forbidding radio network functions, also can be, steal the information on the terminals such as mobile phone and notebook computer by the service of hacker's open wireless network.
In the department that relates to safety, maintains secrecy, need guarantee the information security of computer, notebook computer etc., physically partition is the way of safe and feasible with the Internet, wireless Internet, linking of mobile Internet.Physically partition is comparatively simple with linking of the Internet, breaks off the cable that connects and gets final product.For the terminal of built-in wireless Internet, mobile Internet access function, generally take the way of electromagnetic shielding or electromagnetic interference, the physical path of blocking-up wireless network.To the terminal implement electromagnetic shielding often comparatively difficulty, be awkward, it is more or less freely that electromagnetic interference is implemented at the terminal.
Existing market does not also have to be directed against specially the interference unit of wireless Internet, mobile Internet.
Summary of the invention
In order to overcome above-mentioned defective; The utility model provides a kind of USB interface-based wireless network radio frequency interference device; This radio frequency interference device is not only simple in structure; And can disturb to the wireless Internet of current main-stream, the descending signal of mobile Internet service, prevent that terminals such as computer, notebook computer from giving away secrets through the information of wireless Internet, mobile Internet.
The utility model for the technical scheme that solves its technical problem and adopt is: a kind of USB interface-based wireless network radio frequency interference device; Comprise USB interface, voltage stabilizing circuit, swept-frequency signal generation circuit, sweep voltage adjustment circuit, voltage controlled oscillator, amplifier and antenna; Said voltage controlled oscillator, amplifier and antenna are several, and the output of said USB interface is electrically connected said voltage stabilizing circuit input respectively and also for voltage stabilizing circuit and amplifier operating voltage is provided with several amplifier input terminal; Said circuit output end of pressure-stabilizing is electrically connected the input of said swept-frequency signal generation circuit input end and several voltage controlled oscillators respectively and is that said swept-frequency signal generation circuit provides operating voltage with several voltage controlled oscillators; Said swept-frequency signal generation circuit output end is electrically connected the input of said sweep voltage adjustment circuit; The output of said sweep voltage adjustment circuit is electrically connected the input of said several voltage controlled oscillators respectively; Said swept-frequency signal generation circuit is that said several voltage controlled oscillators provide the benchmark control voltage of sawtooth waveform and input to sweep voltage adjustment circuit, and said sweep voltage adjustment circuit carries out dividing potential drop and exports to several voltage controlled oscillators the benchmark control voltage of input; The output of said each voltage controlled oscillator is electrically connected an amplifier input terminal respectively; The output of said each amplifier is electrically connected an antenna respectively, and the Radio Frequency Interfere that said each voltage controlled oscillator produces (this interference signal covers existing wireless Internet, mobile Internet service frequency range) amplifies after aerial radiation is gone out through amplifier.
Further improvement as the utility model; Said voltage controlled oscillator comprises first voltage controlled oscillator, second voltage controlled oscillator, the 3rd voltage controlled oscillator and the 4th voltage controlled oscillator; Said first voltage controlled oscillator produces the Radio Frequency Interfere of the 869-879MHz that is applicable to CDMA2000; Said second voltage controlled oscillator produces the Radio Frequency Interfere of the 2130-2145MHz that is applicable to WCDMA; Said the 3rd voltage controlled oscillator produces the Radio Frequency Interfere of the 2010-2025MHz that is applicable to TD_SCDMA, and said the 4th voltage controlled oscillator produces the Radio Frequency Interfere of the 2400-2483MHz that is applicable to WLAN.
Further improvement as the utility model; Said amplifier comprises first amplifier, second amplifier, the 3rd amplifier and the 4th amplifier; Said antenna comprises first antenna, second antenna and third antenna; The output of said first voltage controlled oscillator is electrically connected first amplifier and first antenna successively; The output of said second voltage controlled oscillator is electrically connected second amplifier and second antenna successively, and the output of said the 3rd voltage controlled oscillator is electrically connected the 3rd amplifier and second antenna successively, and the output of said the 4th voltage controlled oscillator is electrically connected the 4th amplifier and third antenna successively.
Further improvement as the utility model; It is the sawtooth voltage of 0-3V that said swept-frequency signal generation circuit produces peak value; The frequency of this sawtooth voltage is 60～75KHz, and four groups of sawtooth voltages that said sweep voltage adjustment circuit carries out dividing potential drop through resistance and produces 1.50～1.85V, 2.06～2.16V, 0.93～1.16V, 1.00～1.93V are respectively supplied with first voltage controlled oscillator, second voltage controlled oscillator, the 3rd voltage controlled oscillator and the 4th voltage controlled oscillator respectively.
As the further improvement of the utility model, said first antenna and second antenna are the PIFA antenna, and said third antenna is the CHIP antenna, can reduce the influence between antenna like this, guarantee the radiation efficiency at less space internal antenna.
As the further improvement of the utility model, the voltage range of said voltage stabilizing circuit is 4.7-5.5V.
The beneficial effect of the utility model is: this interference unit can be made the form with the common U disk similar, and is easy to use; Employing USB interface power supply is suitable for the wide-voltage range of general USB interface, guaranteed the stability of Radio Frequency Interfere frequency, amplitude; The design of employing simulation optimization, radio-frequency antenna and circuit structure are conformal, in less space, guarantee the radiation efficiency of antenna.In a word, this interference unit can disturb wireless Internet, the descending signal of mobile Internet service,
Description of drawings
Fig. 1 is the utility model structural principle sketch map.
In conjunction with accompanying drawing, explanation below doing:
1---USB interface 2---voltage stabilizing circuit
3---swept-frequency signal generation circuit VCO---voltage controlled oscillator
4---amplifier 5---antenna
VCO1---first voltage controlled oscillator VCO 2---second voltage controlled oscillator
VCO3---the 3rd voltage controlled oscillator VCO 4---the 4th voltage controlled oscillator
41---first amplifiers 42---, second amplifier
43---the 3rd amplifiers 44---the 4th amplifier
51---first antennas 52---, second antenna
53---third antenna 6---sweep voltage adjustment circuit
Embodiment
A kind of USB interface-based wireless network radio frequency interference device; Comprise usb 1, voltage stabilizing circuit 2, swept-frequency signal generation circuit 3, sweep voltage adjustment circuit 6, voltage controlled oscillator VCO, amplifier 4 and antenna 5; Said voltage controlled oscillator, amplifier and antenna are several, and the output of said USB interface is electrically connected said voltage stabilizing circuit input respectively and also for voltage stabilizing circuit and amplifier operating voltage is provided with several amplifier input terminal; Said circuit output end of pressure-stabilizing is electrically connected the input of said swept-frequency signal generation circuit input end and several voltage controlled oscillators respectively and is that said swept-frequency signal generation circuit provides operating voltage with several voltage controlled oscillators; Said swept-frequency signal generation circuit output end is electrically connected the input of said sweep voltage adjustment circuit; The output of said sweep voltage adjustment circuit is electrically connected the input of said several voltage controlled oscillators respectively; Said swept-frequency signal generation circuit is that said several voltage controlled oscillators provide the benchmark control voltage of sawtooth waveform and input to sweep voltage adjustment circuit, and said sweep voltage adjustment circuit carries out dividing potential drop and exports to several voltage controlled oscillators the benchmark control voltage of input; The output of said each voltage controlled oscillator is electrically connected an amplifier input terminal respectively; The output of said each amplifier is electrically connected an antenna respectively, and the Radio Frequency Interfere that said each voltage controlled oscillator produces (this interference signal covers existing wireless Internet, mobile Internet service frequency range) amplifies after aerial radiation is gone out through amplifier.
Preferably; Above-mentioned voltage controlled oscillator comprises first voltage controlled oscillator VCO 1, second voltage controlled oscillator VCO 2, the 3rd voltage controlled oscillator VCO 3 and the 4th voltage controlled oscillator VCO 4; Said first voltage controlled oscillator produces the Radio Frequency Interfere of the 869-879MHz that is applicable to CDMA2000; Said second voltage controlled oscillator produces the Radio Frequency Interfere of the 2130-2145MHz that is applicable to WCDMA; Said the 3rd voltage controlled oscillator produces the Radio Frequency Interfere of the 2010-2025MHz that is applicable to TD_SCDMA, and said the 4th voltage controlled oscillator produces the Radio Frequency Interfere of the 2400-2483MHz that is applicable to WLAN.
Preferably; Above-mentioned amplifier comprises first amplifier 41, second amplifier 42, the 3rd amplifier 43 and the 4th amplifier 44; Said antenna comprises first antenna 51, second antenna 52 and third antenna 53; The output of said first voltage controlled oscillator is electrically connected first amplifier and first antenna successively; The output of said second voltage controlled oscillator is electrically connected second amplifier and second antenna successively, and the output of said the 3rd voltage controlled oscillator is electrically connected the 3rd amplifier and second antenna successively, and the output of said the 4th voltage controlled oscillator is electrically connected the 4th amplifier and third antenna successively.
Preferably; It is the sawtooth voltage of 0-3V that above-mentioned swept-frequency signal generation circuit produces peak value; The frequency of this sawtooth voltage is 60～75KHz, and four groups of sawtooth voltages that said sweep voltage adjustment circuit carries out dividing potential drop through resistance and produces 1.50～1.85V, 2.06～2.16V, 0.93～1.16V, 1.00～1.93V are respectively supplied with first voltage controlled oscillator, second voltage controlled oscillator, the 3rd voltage controlled oscillator and the 4th voltage controlled oscillator respectively.
Preferably, above-mentioned first antenna and second antenna are the PIFA antenna, and said third antenna is the CHIP antenna, can reduce the influence between antenna like this, guarantee the radiation efficiency at less space internal antenna.
Preferably, the voltage range of above-mentioned voltage stabilizing circuit is 4.7-5.5V.
Claims (6)
1. USB interface-based wireless network radio frequency interference device; It is characterized in that: it comprises USB interface (1), voltage stabilizing circuit (2), swept-frequency signal generation circuit (3), sweep voltage adjustment circuit (6), voltage controlled oscillator (VCO), amplifier (4) and antenna (5); Said voltage controlled oscillator, amplifier and antenna are several, and the output of said USB interface is electrically connected said voltage stabilizing circuit input respectively and also for voltage stabilizing circuit and amplifier operating voltage is provided with several amplifier input terminal; Said circuit output end of pressure-stabilizing is electrically connected the input of said swept-frequency signal generation circuit input end and several voltage controlled oscillators respectively and is that said swept-frequency signal generation circuit provides operating voltage with several voltage controlled oscillators; Said swept-frequency signal generation circuit output end is electrically connected the input of said sweep voltage adjustment circuit; The output of said sweep voltage adjustment circuit is electrically connected the input of said several voltage controlled oscillators respectively; Said swept-frequency signal generation circuit is that said several voltage controlled oscillators provide the benchmark control voltage of sawtooth waveform and input to sweep voltage adjustment circuit, and said sweep voltage adjustment circuit carries out dividing potential drop and exports to several voltage controlled oscillators the benchmark control voltage of input; The output of said each voltage controlled oscillator is electrically connected an amplifier input terminal respectively; The output of said each amplifier is electrically connected an antenna respectively, and the Radio Frequency Interfere that said each voltage controlled oscillator produces amplifies after aerial radiation is gone out through amplifier.
2. USB interface-based wireless network radio frequency interference device according to claim 1; It is characterized in that: said voltage controlled oscillator comprises first voltage controlled oscillator (VCO1), second voltage controlled oscillator (VCO2), the 3rd voltage controlled oscillator (VCO3) and the 4th voltage controlled oscillator (VCO4); Said first voltage controlled oscillator produces the Radio Frequency Interfere of the 869-879MHz that is applicable to CDMA2000; Said second voltage controlled oscillator produces the Radio Frequency Interfere of the 2130-2145MHz that is applicable to WCDMA; Said the 3rd voltage controlled oscillator produces the Radio Frequency Interfere of the 2010-2025MHz that is applicable to TD_SCDMA, and said the 4th voltage controlled oscillator produces the Radio Frequency Interfere of the 2400-2483MHz that is applicable to WLAN.
3. USB interface-based wireless network radio frequency interference device according to claim 2; It is characterized in that: said amplifier comprises first amplifier (41), second amplifier (42), the 3rd amplifier (43) and the 4th amplifier (44); Said antenna comprises first antenna (51), second antenna (52) and third antenna (53); The output of said first voltage controlled oscillator is electrically connected first amplifier and first antenna successively; The output of said second voltage controlled oscillator is electrically connected second amplifier and second antenna successively; The output of said the 3rd voltage controlled oscillator is electrically connected the 3rd amplifier and second antenna successively, and the output of said the 4th voltage controlled oscillator is electrically connected the 4th amplifier and third antenna successively.
4. USB interface-based wireless network radio frequency interference device according to claim 2; It is characterized in that: it is the sawtooth voltage of 0-3V that said swept-frequency signal generation circuit produces peak value; The frequency of this sawtooth voltage is 60～75KHz, and four groups of sawtooth voltages that said sweep voltage adjustment circuit carries out dividing potential drop through resistance and produces 1.50～1.85V, 2.06～2.16V, 0.93～1.16V, 1.00～1.93V are respectively supplied with first voltage controlled oscillator, second voltage controlled oscillator, the 3rd voltage controlled oscillator and the 4th voltage controlled oscillator respectively.
5. according to each described USB interface-based wireless network radio frequency interference device in the claim 2 to 4, it is characterized in that: said first antenna and second antenna are the PIFA antenna, and said third antenna is the CHIP antenna.
6. USB interface-based wireless network radio frequency interference device according to claim 5, it is characterized in that: the voltage range of said voltage stabilizing circuit is 4.7-5.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200254362U CN202435415U (en) | 2012-01-19 | 2012-01-19 | Wireless network radio frequency jammer based on USB (Universal Serial Bus) interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200254362U CN202435415U (en) | 2012-01-19 | 2012-01-19 | Wireless network radio frequency jammer based on USB (Universal Serial Bus) interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435415U true CN202435415U (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200254362U Expired - Lifetime CN202435415U (en) | 2012-01-19 | 2012-01-19 | Wireless network radio frequency jammer based on USB (Universal Serial Bus) interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202435415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023601A (en) * | 2012-12-24 | 2013-04-03 | 昆山九华电子设备厂 | Comprehensive interference unit |
| CN104333433A (en) * | 2014-11-20 | 2015-02-04 | 天津光电通信技术有限公司 | Mobile communication interference unit |
-
2012
- 2012-01-19 CN CN2012200254362U patent/CN202435415U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023601A (en) * | 2012-12-24 | 2013-04-03 | 昆山九华电子设备厂 | Comprehensive interference unit |
| CN104333433A (en) * | 2014-11-20 | 2015-02-04 | 天津光电通信技术有限公司 | Mobile communication interference unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |