CN205961139U - Cell -phone signal jammer - Google Patents
Cell -phone signal jammer Download PDFInfo
- Publication number
- CN205961139U CN205961139U CN201620830171.1U CN201620830171U CN205961139U CN 205961139 U CN205961139 U CN 205961139U CN 201620830171 U CN201620830171 U CN 201620830171U CN 205961139 U CN205961139 U CN 205961139U
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- CN
- China
- Prior art keywords
- frequency
- shielding device
- phone signal
- controlled oscillator
- voltage controlled
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a shield especially relates to a cell -phone signal jammer. It includes the power, still includes a plurality of independent frequency channel systems, every the frequency channel system includes sawtooth wave generator, voltage controlled oscillator, radio frequency power amplifier and emit antenna, sawtooth wave generator's output with voltage controlled oscillator's input is connected, voltage controlled oscillator's output with radio frequency power amplifier 's input is connected, radio frequency power amplifier 's output is connected with emit antenna. Cell -phone signal jammer simple structure, convenient operation can shield polytype communication signals.
Description
Technical field
This utility model is related to a kind of shielding device, more particularly, to a kind of cellular phone signal shielding device.
Background technology
Cellular phone signal shielding device is mainly for all kinds of examination halls, school, gas station, church, court, library, conference centre
(room), cinema, hospital, government, finance, prison, public security, place of military importance etc. prohibit the use of the place of mobile phone.
Operationally, in certain frequency range, mobile phone and base station are linked up mobile phone by radio wave, complete to count
According to the transmission with sound.The principle of mobile phone shielding generally has two methods, and a kind of method is transmitting great-power electromagnetic interference signal
Come interference communications signal, the communication of cut-out mobile phone and base station, this interference method coverage is difficult to control to, and powerful electricity
Magnetic radiation is healthy to people infringement；Another kind of method is to launch with mobile phone with the electromagnetic signal of frequency, and mobile phone is received
Signal formed mess code interference so as to can not with base station set up couple.The limited types of existing cellular phone signal shielding device shielding,
And be inconvenient to control.
Utility model content
For drawbacks described above present in prior art, this utility model provides a kind of handss that can shield multi-signal
Machine signal shielding device.
This utility model is achieved by the following technical solution：A kind of cellular phone signal shielding device, including power supply, also wraps
Include multiple independent frequency range systems, each described frequency range system includes sawtooth generator, voltage controlled oscillator, radio-frequency (RF) power amplification and sends out
Penetrate antenna, the outfan of described sawtooth generator is connected with the input of described voltage controlled oscillator, described voltage controlled oscillator
Outfan is connected with the input of described radio-frequency (RF) power amplification, and the outfan of described radio-frequency (RF) power amplification is connected with transmitting antenna.
It is existing communication apparatus to be carried out more comprehensively and effectively shield, described frequency range system is set to 7, each frequency range system
The tranmitting frequency of system is respectively：869-880MHz, 925-960MHz, 1780-1920MHz, 2010-2025MHz, 2110-
2145MHz, 2300-2485MHz, 2555-2655MHz.
For ensureing stability during mobile phone shielding device start work, inside is additionally provided with soft-start circuit, described delay startup
Circuit is connected with the outfan of described power supply.
For ensureing long-time stable work, described shielding device also includes housing, is provided with radiator fan in described housing, described
Fan is electrically connected with described soft-start circuit, and described housing is provided with heat dissipation ventilation hole.
Described housing is provided with power switch button.
This utility model controls voltage controlled oscillator by sawtooth generator, is allowed to generate the swept-frequency signal of working frequency range,
Each frequency sweep cycle is to add a broad pulse and a burst pulse in each of working frequency range frequency, destroys the area of coverage
Interior mobile phone and the data exchange of base station, mobile phone cannot get base station data, thus cannot communicate.This utility model structure is simple, behaviour
Facilitate, plug-in gets final product automatic running.
This utility model compared with prior art, has the following advantages：
(1) this utility model adopt 7 frequency range systems, can cover all mobile phone signals (CDMA, GSM, DCS, PHS,
SCDMA, 3G, 4G), WIFI (WLAN), the communication of bluetooth/2.4G, wireless network and pinhole cameras signal, thus reaching to these
The purpose that signal is shielded；
(2) be provided with soft-start circuit in this utility model, can be prevented effectively from shielding device start when spark phenomenon occurs it is ensured that
Stability during start.
(3) this utility model is provided with radiator fan and air vent, and shielding device long-time stable work can be effectively ensured.
Brief description
Fig. 1 is the circuit block diagram of cellular phone signal shielding device described in this utility model embodiment；
Fig. 2 is the structural representation of cellular phone signal shielding device shell described in this utility model embodiment；
In figure, 1, housing, 2, heat dissipation ventilation hole, 3, power switch button.
Specific embodiment
Below by the embodiment of indefiniteness and combine accompanying drawing this utility model is further described：
This utility model embodiment provides a kind of cellular phone signal shielding device, including power supply, also includes multiple independent frequencies
Section system, each described frequency range system includes sawtooth generator, voltage controlled oscillator, radio-frequency (RF) power amplification and transmitting antenna, described saw
The outfan of tooth wave producer is connected with the input of described voltage controlled oscillator, and the outfan of described voltage controlled oscillator is penetrated with described
The input of frequency power amplifier connects, and the outfan of described radio-frequency (RF) power amplification is connected with transmitting antenna.
It is existing communication apparatus to be carried out more comprehensively and effectively shield, described frequency range system is set to 7, each frequency range system
The tranmitting frequency of system is respectively：869-880MHz, 925-960MHz, 1780-1920MHz, 2010-2025MHz, 2110-
2145MHz, 2300-2485MHz, 2555-2655MHz.Specifically, the object such as following table institute of the tranmitting frequency shielding of each frequency range
Show：
For ensureing stability during mobile phone shielding device start work, inside is additionally provided with soft-start circuit, described delay startup
Circuit is connected with the outfan of described power supply.
For ensureing long-time stable work, described shielding device also includes housing 1, is provided with radiator fan, institute in described housing 1
State fan to electrically connect with described soft-start circuit, described housing 1 is provided with heat dissipation ventilation hole 2.
Described housing 1 is provided with power switch button 3.
This utility model controls voltage controlled oscillator by sawtooth generator, is allowed to generate the swept-frequency signal of working frequency range,
Each frequency sweep cycle is to add a broad pulse and a burst pulse in each of working frequency range frequency, destroys the area of coverage
Interior mobile phone and the data exchange of base station, mobile phone cannot get base station data, thus cannot communicate.This utility model structure is simple, behaviour
Facilitate, plug-in gets final product automatic running.
This utility model compared with prior art, has the following advantages：
(1) this utility model adopt 7 frequency range systems, can cover all mobile phone signals (CDMA, GSM, DCS, PHS,
SCDMA, 3G, 4G), WIFI (WLAN), the communication of bluetooth/2.4G, wireless network and pinhole cameras signal, thus reaching to these
The purpose that signal is shielded；
(2) be provided with soft-start circuit in this utility model, can be prevented effectively from shielding device start when spark phenomenon occurs it is ensured that
Stability during start.
(3) this utility model is provided with radiator fan and air vent, and shielding device long-time stable work can be effectively ensured.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Any modification, equivalent substitution and improvement done within the spirit of utility model and principle etc., should be included in of the present utility model
Within protection domain.
Claims (5)
1. a kind of cellular phone signal shielding device, including power supply it is characterised in that also including multiple independent frequency range systems, each institute
State frequency range system and include sawtooth generator, voltage controlled oscillator, radio-frequency (RF) power amplification and transmitting antenna, described sawtooth generator defeated
Go out end to be connected with the input of described voltage controlled oscillator, the input of the outfan of described voltage controlled oscillator and described radio-frequency (RF) power amplification
Connect, the outfan of described radio-frequency (RF) power amplification is connected with transmitting antenna.
2. cellular phone signal shielding device according to claim 1 is it is characterised in that described frequency range system is set to 7, each frequency
The tranmitting frequency of section system is respectively：869-880MHz, 925-960MHz, 1780-1920MHz, 2010-2025MHz, 2110-
2145MHz, 2300-2485MHz, 2555-2655MHz.
3. cellular phone signal shielding device according to claim 1 and 2 is it is characterised in that also including soft-start circuit, described slow
Start-up circuit is connected with the outfan of described power supply.
4. cellular phone signal shielding device according to claim 3, it is characterised in that also including housing, is provided with described housing
Radiator fan, described fan is electrically connected with described soft-start circuit, and described housing is provided with heat dissipation ventilation hole.
5. cellular phone signal shielding device according to claim 4 it is characterised in that described housing be provided with and off switch by
Button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830171.1U CN205961139U (en) | 2016-08-01 | 2016-08-01 | Cell -phone signal jammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830171.1U CN205961139U (en) | 2016-08-01 | 2016-08-01 | Cell -phone signal jammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205961139U true CN205961139U (en) | 2017-02-15 |
Family
ID=57973238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620830171.1U Expired - Fee Related CN205961139U (en) | 2016-08-01 | 2016-08-01 | Cell -phone signal jammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205961139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347595A (en) * | 2018-11-14 | 2019-02-15 | 常熟理工学院 | A kind of interference information screen method and shielding harness for concerning security matters region |
-
2016
- 2016-08-01 CN CN201620830171.1U patent/CN205961139U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347595A (en) * | 2018-11-14 | 2019-02-15 | 常熟理工学院 | A kind of interference information screen method and shielding harness for concerning security matters region |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20170801 |