CN201797512U - Wireless signal shielding device - Google Patents
Wireless signal shielding device Download PDFInfo
- Publication number
- CN201797512U CN201797512U CN2010205043049U CN201020504304U CN201797512U CN 201797512 U CN201797512 U CN 201797512U CN 2010205043049 U CN2010205043049 U CN 2010205043049U CN 201020504304 U CN201020504304 U CN 201020504304U CN 201797512 U CN201797512 U CN 201797512U
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- shielding device
- signal shielding
- wireless signal
- pcb board
- shell
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Abstract
The utility model relates to a wireless signal shielding device which comprises a shell and a work circuit of a signal shielding device arranged in the shell. The wireless signal shielding device is characterized in that the work circuit of the signal shielding device consists of a fast sawtooth wave generator, a voltage-controlled oscillator, a filter, a numerical control attenuator, a power amplifier and an antenna which are sequentially coupled with each other. The wireless signal shielding device is wide in shielding range, can shield signals of communication frequency ranges with various modes in the current communication field such as the code division multiple access (CDMA), the global system for mobile communication (GSM), the personal handy phone system (PHS), the wideband code division multiple access (WCDMA), the time division-synchronization code division multiple access (TD-SCDMA), the CDMA2000, the wireless local area network (WLAN) and the like, is stable and reliable in function, is novel and unique in appearance, is very convenient to operate and use, is good in a heat dissipation effect, can perform the full-power output for a long time, and can be widely applied to various places which need to shield the wireless signals in the field of the security, the confidential session, the examination hall, the prison and the like.
Description
Technical field
The utility model relates to a kind of signal shielding device, relates in particular to portable cellular phone signal shielding device.
Background technology
Wireless signal shielding device claims cropper again, and block device etc. are mainly used in and prevent that mobile phone (computer) from carrying out illegal communication, i.e. cheating, the activity of grade of divulging a secret.The at present domestic most transmitting power of shielding device is little, and band is outer to be disturbed greatly, and shield ranges is low, and the power adjustments accuracy is poor, and the structure heat radiation is not enough, is not suitable for long-term use.
Summary of the invention
The purpose of this utility model is to provide a kind of cellular phone signal shielding device, and it is little that this shielding device helps solving transmitting power, and band is outer to be disturbed greatly, and shield ranges is low, and the power adjustments accuracy is poor, and the structure heat radiation is not enough, is not suitable for the long-term problem of using.
For solving the problems of the technologies described above, the utility model wireless signal shielding device, comprise shell and be located at the interior signal shielding device operating circuit of shell, it is characterized in that: described signal shielding device operating circuit is connect by quick saw-toothed wave generator, voltage controlled oscillator, filter, numerical-control attenuator, power amplifier and antenna lotus root successively to be formed.
In the utility model one preferred embodiment, described signal shielding device operating circuit is laid on the pcb board that is installed on the fin.
In the utility model one preferred embodiment, described pcb board is to be fixed on the fin by screw.
In the utility model one preferred embodiment, described shell comprises is located at pcb board metal isolating strip all around; One is used to cover the sheet metal of whole pcb board, and described sheet metal is located on this metal isolating strip; One can cover the outer cover in the gap between this sheet metal and parting bead and the fin.Described metal isolating strip is to be fixed on the pcb board by screw.
The utility model is owing to adopted technique scheme, utilization rapid frequency-sweeping signal shielding mechanism is as the working method of shielding device, can to the present communications field the CDMA that generally adopts, GSM, PHS, WCDMA, TD-SCDMA, CDMA2000, the signal of various pattern communication frequency ranges such as WLAN shields, function-stable is reliable, and should the mechanism band outer nonlinear distortion is low, and by on shielding device link, add filter effectively filtering shield spurious signal outside the band on the device link, make this shielding device stable performance, can not disturb other communication apparatus (base station etc.).Simultaneously, in the shielding link, add numerical-control attenuator, realize that by toggle switch the power output of 1dB stepping is controlled, easy to use.Secondly, the utility model directly is locked in PCB on the fin, has improved the radiating rate of shielding device effectively, and forms a metallic shield by metal isolating strip and metal cover board, can prevent effectively that inside modules from respectively shielding channel interference and extraneous interference.And cover a cover in appearance, the unique outlook novelty.
Description of drawings
Fig. 1 is the utility model schematic block circuit diagram.
Fig. 2 is the utility model circuit fin, metal isolating strip and foil structures figure.
Fig. 3 is the utility model cover structure figure.
Fig. 4 is the utility model assembling assumption diagram.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1, the utility model provides a kind of wireless signal shielding device, comprise shell and be located at the interior signal shielding device operating circuit of shell, it is characterized in that: described signal shielding device operating circuit is connect by quick saw-toothed wave generator, voltage controlled oscillator, filter, numerical-control attenuator, power amplifier and antenna lotus root successively to be formed.The working method that it adopts is a rapid frequency-sweeping signal shielding mode.Be used for the signal of various pattern communication frequency ranges such as CDMA, GSM, PHS, WCDMA, TD-SCDMA, CDMA2000, WLAN is shielded.
Specifically, as shown in Figure 2, the selection of the utility model signal shielding scope is controlled FDD (CDMA respectively by two 5 toggle switch 5(, GSM, WCDMA, CDMA2000, PHS) and TDD (TD-SCDMA, WLAN)) numerical-control attenuator is regulated power output, to reach the function of control shield ranges.In this preferred embodiment, described shielding device operating circuit is located on the pcb board that is installed on the fin.Pcb board described here is locked on the fin 2 by screw, and lock metal isolating strip 1 around the pcb board, on metal isolating strip 1, lock sheet metal 3 then, cover outer cover (as shown in Figure 3) at last, and lock screw 41 with the fixing metal outer cover, the side of this metal housing is provided with antennal interface 42(as shown in Figure 4).Power on by power interface 4 connection adaptor, control is opened and turn-offed to 6 pairs of shielding devices of switch.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. a wireless signal shields device, comprise shell and be located at the interior signal shielding device operating circuit of shell, it is characterized in that: described signal shielding device operating circuit is connect by quick saw-toothed wave generator, voltage controlled oscillator, filter, numerical-control attenuator, power amplifier and antenna lotus root successively to be formed.
2. wireless signal shielding device according to claim 1, it is characterized in that: described signal shielding device operating circuit is laid on the pcb board that is installed on the fin.
3. wireless signal shielding device according to claim 2, it is characterized in that: described pcb board is to be fixed on the fin by screw.
4. wireless signal shielding device according to claim 2, it is characterized in that: described shell comprises
Be located at pcb board metal isolating strip all around;
One is used to cover the sheet metal of whole pcb board, and described sheet metal is located on this metal isolating strip;
One can cover the outer cover in the gap between this sheet metal and parting bead and the fin.
5. wireless signal shielding device according to claim 4, it is characterized in that: described metal isolating strip is to be fixed on the pcb board by screw.
6. wireless signal shielding device according to claim 4, it is characterized in that: described outer cover side is provided with antennal interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205043049U CN201797512U (en) | 2010-08-25 | 2010-08-25 | Wireless signal shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205043049U CN201797512U (en) | 2010-08-25 | 2010-08-25 | Wireless signal shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797512U true CN201797512U (en) | 2011-04-13 |
Family
ID=43852409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205043049U Expired - Fee Related CN201797512U (en) | 2010-08-25 | 2010-08-25 | Wireless signal shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201797512U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983880A (en) * | 2012-11-20 | 2013-03-20 | 四川大学 | Wideband code division multiple access (WCDMA) signal shielding system |
| CN103023601A (en) * | 2012-12-24 | 2013-04-03 | 昆山九华电子设备厂 | Comprehensive interference unit |
| CN103220064A (en) * | 2012-01-19 | 2013-07-24 | 中国人民解放军61770部队 | Wireless network radio frequency interference unit based on universal serial bus (USB) interface |
| CN103248448A (en) * | 2013-04-02 | 2013-08-14 | 陕西天基通信科技有限责任公司 | TD-SCDMA/TD-LTE downlink shielding device and design method thereof |
| CN103731229A (en) * | 2013-12-18 | 2014-04-16 | 广州启辰电子科技有限公司 | Method for shielding wireless signal |
| CN107455889A (en) * | 2017-09-20 | 2017-12-12 | 盐城工业职业技术学院 | It is a kind of to be used to take precautions against the card holder that electronic information is stolen |
| CN108650870A (en) * | 2018-03-23 | 2018-10-12 | 韦龙生 | A kind of improved electric magnetic shielding device |
| 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 |
| CN113225913A (en) * | 2020-01-21 | 2021-08-06 | 深圳市大富科技股份有限公司 | PCB (printed circuit board) arrangement method for 5G wireless communication base station |
-
2010
- 2010-08-25 CN CN2010205043049U patent/CN201797512U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220064A (en) * | 2012-01-19 | 2013-07-24 | 中国人民解放军61770部队 | Wireless network radio frequency interference unit based on universal serial bus (USB) interface |
| CN102983880A (en) * | 2012-11-20 | 2013-03-20 | 四川大学 | Wideband code division multiple access (WCDMA) signal shielding system |
| CN102983880B (en) * | 2012-11-20 | 2016-03-23 | 四川大学 | A kind of WCDMA signal shielding system |
| CN103023601A (en) * | 2012-12-24 | 2013-04-03 | 昆山九华电子设备厂 | Comprehensive interference unit |
| CN103248448A (en) * | 2013-04-02 | 2013-08-14 | 陕西天基通信科技有限责任公司 | TD-SCDMA/TD-LTE downlink shielding device and design method thereof |
| CN103731229A (en) * | 2013-12-18 | 2014-04-16 | 广州启辰电子科技有限公司 | Method for shielding wireless signal |
| CN107455889A (en) * | 2017-09-20 | 2017-12-12 | 盐城工业职业技术学院 | It is a kind of to be used to take precautions against the card holder that electronic information is stolen |
| CN108650870A (en) * | 2018-03-23 | 2018-10-12 | 韦龙生 | A kind of improved electric magnetic shielding device |
| 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 |
| CN113225913A (en) * | 2020-01-21 | 2021-08-06 | 深圳市大富科技股份有限公司 | PCB (printed circuit board) arrangement method for 5G wireless communication base station |
| CN113225913B (en) * | 2020-01-21 | 2022-09-09 | 深圳市大富科技股份有限公司 | PCB (printed circuit board) arrangement method for 5G wireless communication base station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170613 Address after: No. 7 building two Wufeng Street software Avenue Gulou District of Fuzhou city in Fujian province 350000 No. 89 Fuzhou Software Industrial Park Building Patentee after: Fujian three Yuan Da Technology Co., Ltd. Address before: 350003 Fujian city of Fuzhou Province Copper Road Software Park base in B District 7 Patentee before: Fujian Sunnada Communication Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20190825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |