CN2674804Y - Cell-phone signal shield interference apparatus - Google Patents
Cell-phone signal shield interference apparatus Download PDFInfo
- Publication number
- CN2674804Y CN2674804Y CNU032068735U CN03206873U CN2674804Y CN 2674804 Y CN2674804 Y CN 2674804Y CN U032068735 U CNU032068735 U CN U032068735U CN 03206873 U CN03206873 U CN 03206873U CN 2674804 Y CN2674804 Y CN 2674804Y
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Abstract
The utility model discloses a cell-phone signal shield interference apparatus, comprising two signal generators, two switch power supplies, three voltage control oscillators, three signal processing units, three ASIC electric circuits, three switch circuits and a power control electric circuit. One path signal generator (1) signal is branched and entered into the voltage controlled oscillators (2) and (11) and flowed into the ASIC electric circuits (5) and (14) through buffers (4) and (13), a 50 omega impedance-matching network, a frequency selection switch circuit and the power control electric circuits (6), (15) are arranged in the ASIC electric circuits, and the output power is emitted by transmitting antennas (7), (16) after being adjusted. The other path signal generator (17) signal is branched and entered into the voltage control oscillator (18) and flowed into the ASIC electric circuit (23) through a buffer (19), a 50 omega impedance-matching network, a frequency selection switch circuit and the power control electric circuit (23) are arranged in the ASIC electric circuit (23), and the output power is emitted by the transmitting antenna (22) after being adjusted. The advantage is that the utility model can carry out the shield interference for all working frequency range communication signal between a base station and the cell-phone.
Description
Affiliated field
The utility model relates to a kind of wireless device of all working frequency range signal of communication between base station and mobile phone being implemented the shielding interference.
Background technology
Because mobile communication is a kind of complete open system at present, both brings convenience to us, also brings puzzlement to us.The tinkle of bells of mobile phone and conversation make places such as church, classroom, library, movie theatre, meeting be interfered, and the serious conference content that causes is even divulged a secret then and there, threaten safety; During operating handset, particularly energy and the sporadic self-destruction that battery is supplied with during ring might make inflammable and explosive zones such as gas station, oil field cause fire; The interference of mobile phone signal, false triggering meeting are broken down the instrument and equipment of occasion uses such as hospital, cause various accidents, and even malpractice.
In view of the use of mobile phone exists above-mentioned harm, for anti-interference, exempt from disaster, ensure safety, the existing existing wireless device of respectively base station that is operated in 870-880MHz, 935-960MHz and 1885-1910MHz frequency range and the signal of communication between the mobile phone being implemented individually shielded interference.And power supply is an external.Because China's mobile phone market is the market of a multi-modulation scheme coexistence of multiband, working form is CDMA, GSM, PHS, working frequency range is divided into three: 870-880MHz, 935-960MHz, 1885-1910MHz, promptly the various operating handsets in same time period, same scope are at different frequency range.Its weak point is: it can only implement shadow shield to the signal of communication in the working frequency range of mobile phone respectively.
Summary of the invention
The purpose of this utility model provides in a kind of time period at needs, the certain scope, not only can be respectively but also can be simultaneously signal of communication between the base station that is operated in 870-880MHz, 935-960MHz and 1885-1910MHz frequency range and the mobile phone be implemented all shieldings and the built-in mobile phone signal shielding interference unit of power of alterating and direct current.
The purpose of this utility model is achieved in that a kind of mobile phone signal shielding interference unit, comprise two signal generators, two Switching Power Supplies, three voltage controlled oscillators, three signal processed unit, three ASIC circuit, three switching circuits and power control circuit, the signal of one road signal generator enters different voltage-controlled oscillator (VCO)s respectively after shunt, flow into the ASIC circuit respectively through buffer again, have 50 Ω impedance matching networks in the ASIC circuit, frequency selective switch circuit and power control circuit, after the power output adjustment, by transmission antennas transmit.The signal of its another road signal generator enters voltage-controlled oscillator (VCO) after shunt, again through buffer, flow into the ASIC circuit; Have 50 Ω impedance matching networks in the ASIC circuit, frequency selective switch circuit and power control circuit are after the power output adjustment, by transmission antennas transmit.Also above-mentioned three road signals and three transmitting antennas can be contained in device of composition in the screening housing.
The utility model has the advantages that:
1. owing in the insulation shielding shell, design a Miniature Power Unit that can obtain stable output, it can allow the variation of electrical network within 18%, and this power supply is fit to the mobility of this product, and volume is little, in light weight, cost is low, power supply output simultaneously is uninterrupted, and is loose to environmental condition.
2.,, thereby, improve circuit quality without blower fan because the area of the inner ground dummy board of employing and the heat radiating metal base plate that doubles improves heat loss through conduction and the width of cloth is penetrated heat radiation though two groups of power supplys are contained in the screening housing.
3. adopt integrated circuit to finish the generation of signal, control voltage controlled oscillator (VCO), promotion, amplification and internal driving coupling etc. make design simplification, are easy to make.
4. this circuit adopts the triangular wave of the variation of intercropping line style at any time to control voltage controlled oscillator, makes this product reach full frequency band in the zone that effectively shields the cut-out mobile communication and covers.
5. small and light, the low in energy consumption and reliability height of small product size of the present utility model.
6. three transmitting antennas have guaranteed the omni-directional index of antenna respectively at a distance of 1.25 λ-2 λ, make it can cover designed zone.
Description of drawings
Fig. 1 cellular phone signal shielding device structural representation.
A case study on implementation structure of Fig. 2 the utility model scheme of installation.
Another case study on implementation structure scheme of installation of Fig. 3 the utility model.
Embodiment
Referring to Fig. 1, Fig. 2, this mobile phone signal shielding interference unit is by two signal generators 1,17, two Switching Power Supplies 8,24, three voltage controlled oscillators (VCO) 2,11,18, three signal processed unit (have another name called buffer or promote level) 4,13 and 20, compositions such as 5,14,21, three switching circuits of three ASIC circuit (having another name called power amplifier components or adjustable power amplifier) and power control circuit (having another name called CMOS control) 6,15,23.The signal of signal generator 1 enters different voltage-controlled oscillator (VCO) 2 and 11 respectively after shunt, again through buffer 4 and 13, flow into ASIC circuit 5 and 14 respectively.Have 50 Ω impedance matching networks in this ASIC circuit 5 and 14, frequency selective switch circuit and power control circuit 6,15 etc. can be adjusted power output.At last by transmitting antenna 7,16 emissions.
The signal of another signal generator 17 enters voltage-controlled oscillator (VCO) 18 after shunt, again through buffer 19, flow into ASIC circuit 23.Have 50 Ω impedance matching networks in this ASIC circuit 21, frequency selective switch circuit and power control circuit 23 etc. can be adjusted power output.At last by transmitting antenna 22 emissions.
A case study on implementation of the present utility model, with reference to Fig. 1, Fig. 2 at first tightens SMA socket 29,30,31, and transmitting antenna 7,16 and 22 is adjusted to erectility.Then AC Power supply socket 32 is linked to each other with power line, connect the 220V power supply, this device just is in holding state.The utility model Safety Design is complete machine insulation resistance 〉=100M Ω, AC Power supply socket 32 place's live wires to ground wire and zero line to the dielectric strength between ground wire all at 1500V/50Hz, last 1 minute and arcing and puncture can not occur.
During work, as shielding the GSM standard, operating frequency is the mobile phone of 935-960MHz or 1885-1910MHz, can be allocated to " ON " position to switch 10, and indicator light 28 is opened.Can operate as normal after the complete machine start.If the user uses DC power supply, then+5V power supply is inserted by direct current jack 9.But the power supply of AC power this moment after rectification still do not cut off.Start back signal generator 1 is sent signal.
During work, as shielding the CDMA standard, operating frequency is the mobile phone of 870-880MHz, can be allocated to " ON " position to switch 25, indicator light 27 is opened, and the signal that signal generator 17 produces is handled the back by antenna 22 emissions through a series of signal again through another voltage-controlled oscillator (VCO) 18, buffer 19.The sensing meeting of adjusting each transmitting antenna 7,16 and 22 is specifically needed decide by the user to everywhere interference field strength increase and decrease to some extent on qualified basis in the mobile phone signal shielding zone.
" screw " adjusted in the buffer 3,12 or 19 can reach the effect of controlling the power output size.Clockwise rotate power and be output as reduction, rotate counterclockwise power and be output as increase.
Fig. 3 is another case study on implementation structure scheme of installation of utility model.It has cancelled direct current jack 9 and 26 and switch 25, and increases power supply protection device.Be exactly when fault of normal power supply, automatically switch on the employed uninterrupted power supply ups system of similar computer.Antenna is realized arranging in the same way by SMA high- frequency socket 29,30,31.The tranmitting frequency of intermediate circuit is 1885-1910MHZ, reduces crosstalking between two nearly frequencies with this.Confirm that through example the monolithic printed board that structure is more compact is formed a device to three road signals and three transmitting antennas 7,16,22, and in full accord with first case study on implementation on electric property.
The utility model is based on noise modulated and disturbs, and this is that a kind of effective compacting formula is disturbed.It can produce the interfering frequency of this broad of 858MHZ-1920MHZ.Modern microelectric technique can provider with ASIC circuit 5,14,21, it covers 870-880MHZ, 935-960MHZ and these three groups of communication frequency bands of 1885-1910MHZ in the above-mentioned frequency range.This ASIC circuit includes GaAs substrate integrated amplifier, 50 Ω input and output impedance matching networks are arranged, and meritorious control circuit has autoband selected on-off circuit etc., make can effectively be got up by " shielding " apart from the mobile phone outside the certain distance of base station, can't acknowledge(ment) signal.
The utility model also can carry out the analysis of frequency, signal form (comprising modulation system, broadband, information format etc.) and minimum incoming signal level as required to interference signals, the power-amplifier stage that design is fit to increases the scope to mobile phone signal shielding.Usually require interference power good interference effect just can be arranged greater than the 10-20dB of signal power.
The scheme that the utility model solves its technical problem is:
1. in the insulation shielding shell, at first design one the direct rectification of electrical network power frequency, filtering, modulate ratio switching time of adjusting the high frequency power pipe, and obtain the miniaturization power supply of stable output through sampling comparison and then control impuls.It can allow electrical network that variation within 18% is arranged, but mains frequency has still operate as normal of 4% variation.This power supply is fit to the mobility of this product, and volume is little, in light weight, cost is low, and power supply output simultaneously is uninterrupted, and is loose to environmental condition.Its ripple and noise are weaker, but have all taked multiple filter and containment jamming countermeasure in the design in waveform generation, VCO, penultimate stage power amplifier and power amplifier level circuit, and this Switching Power Supply safety is met the specification.
2., adopt inner ground dummy board and the area of the heat radiating metal base plate that doubles improves heat loss through conduction and the width of cloth is penetrated heat radiation though two groups of power supplys next-door neighbour is assembled in the screening housing.Thereby, improve circuit quality without blower fan.
3. adopt external integrated circuit to finish the generation of signal, VCO, promotion, amplification and internal driving coupling etc.This is a simplified design, the practical measure that is easy to make.
4. disturb for reaching effective compacting formula, it will produce the broad-band interference frequency spectrum with certain power spectral density.The triangular wave that this circuit adopts intercropping line style at any time to change is controlled voltage controlled oscillator (VCO).Make it to produce needed swept-frequency signal.Make oscillator by the common-collector circuit that is adapted to the good broadband frequency characteristic.Design has voltage amplification concurrently again then, electric current amplifies and the common-emitter amplifier of power amplification is made penultimate stage power amplifier (promoting level), and this cathode follower just guarantees that the back load variations does not influence the broadband character of front frequency sweep network.The insertion of filter network has been considered in design, make to carry out signal spectrum purity accords designing requirement before the power amplification at last, and to make the power spectral density after the power amplification is very even, and has matched well with transmitting antenna 7,16,22.Make the EIRP of this product in the zone that effectively shields the cut-out mobile communication, reach full frequency band covering purpose.
5. the Frequency Band Selection switch is set in shielding box and according to using on-the-spot electromagnetic environment by two variable potentiometers and a variable capacitor respectively at VCO level and power-amplifier stage.They can be adjusted frequency range, power spectral density and watt level.
6. the utility model volume is small and light, low in energy consumption and reliable.So select for use integrated circuit to be used for Switching Power Supply, waveform generator and power amplifier, these integrated circuit models and function are:
It is six phase inverters for MC 14069 UB.Form on a mono-crystalline structures liner by MOS P raceway groove and N raceway groove, belong to the enhancement mode working method.This phase inverter is mainly used in the circuit of low-power consumption and the high noise immunity of expectation.Also contain the protective circuit that prevents high static pressure or high electric field strength and cause damage in the integrated circuit.This product is to utilize gate circuit to form triangular-wave generator, and it is to produce square wave by comparison circuit and phase inverter, forms stable oscillation stationary vibration by regenerative circuit again, and converts square wave to triangular wave output through integrating circuit.
CX 77304-17 power amplifier component (PAM).It is a power amplifier piece of independently making two different knot bipolar transistors of independence (HBT) in a slice on the gallium arsenide wafer.A power amplifier piece is operated in EGSM 900 frequency ranges, and another piece power amplifier piece is operated in DCS 1800/PCS 1900 frequency range power amplifier pieces, has the cmos circuit of a customization to provide internal interface and electric current to amplify again.All these functional blocks all plastic packaging on the laminated substrate of a slice multilayer.Its function is that three groups of frequency ranges of required amplification are input to above-mentioned two power amplifier pieces, through inner couplings electric capacity, deliver in the transistor power amplifier through matching network, this amplifier carries out power control and Frequency Band Selection (BS) by external signal by inner CMOS bias circuit controls device.Signal behind the power amplifier is linked the SMA high-frequency socket through matching network with the microstrip line of 50 Ω impedances.
7. three transmitting antennas have guaranteed the omni-directional index of antenna respectively at a distance of 1.25 λ-2 λ, make it can cover designed zone.
8. adopt special-purpose little band SMA socket and relevant little band match circuit for control structure is compact.The printed board direction of three groups of signal circuits of change is arranged among second embodiment, and power unit has increased the alternating current-direct current switching device shifter, so that reach the purpose of compact conformation easy to use.
Claims (2)
1. mobile phone signal shielding interference unit, it is characterized in that comprising two numbers generators (1), (17), two Switching Power Supplies (8), (24), three voltage controlled oscillators (2), (11), (18), three signal processed unit (4), (13), (20), three ASIC circuit (5), (14), (21), three switching circuits and power control circuit (6), (15), (23);
The signal of one road signal generator (1) enters voltage-controlled oscillator (VCO) (2) and (11) respectively after shunt, again through buffer (4) and (13), flow into ASIC circuit (5) and (14) respectively, frequency selective switch circuit and power control circuit (6), (15), after the power output adjustment, by transmitting antenna (7), (16) emission;
The signal of its another road signal generator (17) enters voltage-controlled oscillator (VCO) (18) after shunt, again through buffer (19), flow into ASIC circuit (23); Frequency selective switch circuit and power control circuit (23) after the power output adjustment, are launched by transmitting antenna (22).
2. mobile phone signal shielding interference unit according to claim 1 is characterized in that above-mentioned three road signals and three transmitting antennas (7), (16), (22) are contained in device of composition in the screening housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032068735U CN2674804Y (en) | 2003-08-06 | 2003-08-06 | Cell-phone signal shield interference apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032068735U CN2674804Y (en) | 2003-08-06 | 2003-08-06 | Cell-phone signal shield interference apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674804Y true CN2674804Y (en) | 2005-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032068735U Expired - Fee Related CN2674804Y (en) | 2003-08-06 | 2003-08-06 | Cell-phone signal shield interference apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674804Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115102B (en) * | 2007-06-29 | 2010-05-19 | 南京柏康机电科技有限公司 | Intelligent management system of mobile phone signal shielding network |
| CN101513115B (en) * | 2006-07-27 | 2012-02-15 | Asi娱乐有限公司 | A wireless communications apparatus |
| CN102694555A (en) * | 2012-05-22 | 2012-09-26 | 成都九华圆通科技发展有限公司 | Miniaturized intelligent signal suppressor |
| CN102710341A (en) * | 2011-04-21 | 2012-10-03 | 北京国瑞维讯科技有限公司 | Ingenious examination room radio cheating counter measure equipment |
| CN103023601A (en) * | 2012-12-24 | 2013-04-03 | 昆山九华电子设备厂 | Comprehensive interference unit |
| CN103974271A (en) * | 2013-02-05 | 2014-08-06 | 中国电信股份有限公司 | Communication shielding system and method based on indoor distribution link control |
| CN108548620A (en) * | 2018-03-20 | 2018-09-18 | 湖南工学院 | Wireless photon pressure capsule system and method |
-
2003
- 2003-08-06 CN CNU032068735U patent/CN2674804Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513115B (en) * | 2006-07-27 | 2012-02-15 | Asi娱乐有限公司 | A wireless communications apparatus |
| CN101115102B (en) * | 2007-06-29 | 2010-05-19 | 南京柏康机电科技有限公司 | Intelligent management system of mobile phone signal shielding network |
| CN102710341A (en) * | 2011-04-21 | 2012-10-03 | 北京国瑞维讯科技有限公司 | Ingenious examination room radio cheating counter measure equipment |
| CN102694555A (en) * | 2012-05-22 | 2012-09-26 | 成都九华圆通科技发展有限公司 | Miniaturized intelligent signal suppressor |
| CN103023601A (en) * | 2012-12-24 | 2013-04-03 | 昆山九华电子设备厂 | Comprehensive interference unit |
| CN103974271A (en) * | 2013-02-05 | 2014-08-06 | 中国电信股份有限公司 | Communication shielding system and method based on indoor distribution link control |
| CN103974271B (en) * | 2013-02-05 | 2017-12-26 | 中国电信股份有限公司 | Communication shielding harness and method based on the control of indoor distribution link |
| CN108548620A (en) * | 2018-03-20 | 2018-09-18 | 湖南工学院 | Wireless photon pressure capsule system and method |
| CN108548620B (en) * | 2018-03-20 | 2019-12-27 | 湖南工学院 | Wireless photonic pressure sensing systems and methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |