CN110474704A - Radio signal shielding method and device based on adjustable Sweep Source - Google Patents
Radio signal shielding method and device based on adjustable Sweep Source Download PDFInfo
- Publication number
- CN110474704A CN110474704A CN201910740735.0A CN201910740735A CN110474704A CN 110474704 A CN110474704 A CN 110474704A CN 201910740735 A CN201910740735 A CN 201910740735A CN 110474704 A CN110474704 A CN 110474704A
- Authority
- CN
- China
- Prior art keywords
- frequency
- signal
- range
- source
- screening frequencies
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/45—Jamming having variable characteristics characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
This application involves a kind of radio signal shielding method and devices based on adjustable Sweep Source.Method includes: to be detected using the module with frequency detecting function and/or the module with frequency spectrum detection analytic function to the frequency usage range of each frequency range in environment, obtains screening frequencies range；Shielded signal corresponding with screening frequencies range is generated using adjustable Sweep Source, and shielded signal is sent into screening frequencies.This method can be suitable for all kinds of places and shield demand using the screening frequencies range detected in current environment as shield ranges, and then improve resource utilization.
Description
Technical field
This application involves technical field of electronic communication, more particularly to a kind of radio signal shielding based on adjustable Sweep Source
Method and device.
Background technique
With the development of mobile communication technology, the terminal of the wireless communication systems such as mobile phone is convenient, fast with its, not by
The many advantages such as time and place are popular with the masses of users.But in some Code in Hazardous Special Locations, electronic equipment with it is internetwork
, there is the leakage of information sometimes in communication.For example, in prison, in order to carry out significantly more efficient monitoring to criminal, often
It needs to cut off criminal to contact with extraneous；In examination hall, generally requires to shield mobile phone signal, prevent examinee from making
Disadvantage.
Traditional radio signal shielding method, using as unit of standard bands as shield ranges, to block wireless communication eventually
End is established with base station and is communicated to connect.But some wireless communication terminals are not limited by national standard frequency range, only by technical standard
Limitation then just needing the conduct shield ranges of whole standard bands, and results in waste of resources, is not able to satisfy and is applicable in all kinds of fields
Shielded demand.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, providing one kind can satisfy all kinds of place shielding demands that are applicable in, and
Improve the radio signal shielding method and device based on adjustable Sweep Source of resource utilization.
A kind of radio signal shielding method based on adjustable Sweep Source, which comprises
Using the module with frequency detecting function and/or the module with frequency spectrum detection analytic function to frequency each in environment
The frequency usage range of section is detected, and screening frequencies range is obtained；
Generate corresponding with screening frequencies range shielded signal using adjustable Sweep Source, and by the shielded signal to
It is sent within the scope of the screening frequencies.
The module using with frequency detecting function and/or divide in one of the embodiments, with frequency spectrum detection
The module of analysis function detects the frequency usage range of frequency range each in environment, obtains screening frequencies range, comprising:
Using the module with frequency detecting function and/or with the module scans wireless local area of frequency spectrum detection analytic function
Each broadcast singal that base station issues is netted, spectrum analysis is carried out to each broadcast singal, obtains screening frequencies range.
It is described in one of the embodiments, to generate shielding corresponding with the screening frequencies range using adjustable Sweep Source
Signal, and the shielded signal is sent into the screening frequencies, comprising:
It is switched to respectively and the screening frequencies range corresponding frequency band using the radio-frequency switch circuit in adjustable Sweep Source
Swept signal generator；
Swept signal generator is adjusted according to the screening frequencies range using the source controller of sweeping in adjustable Sweep Source
Configuration parameter；
Swept signal generator generates interference signal corresponding with the frequency range, and is packaged and obtains shielded signal, will
The shielded signal is sent by antenna into the screening frequencies.
Correspondingly, the present invention also provides a kind of radio signal shielding device based on adjustable Sweep Source, described device includes
Module and adjustable Sweep Source with frequency detecting function:
The module with frequency detecting function, connect with the adjustable Sweep Source, for frequency range each in environment
Frequency usage range is detected, and screening frequencies range is obtained；
The adjustable Sweep Source, for generating corresponding with screening frequencies range shielded signal, and by the shielding
Signal is sent into the screening frequencies；
And/or；
Described device includes having the module and adjustable Sweep Source of frequency spectrum detection analytic function；
The module with frequency spectrum detection analytic function, connect with the adjustable Sweep Source, for frequency each in environment
The frequency usage range of section is detected, and screening frequencies range is obtained；
The adjustable Sweep Source, for generating corresponding with screening frequencies range shielded signal, and by the shielding
Signal is sent into the screening frequencies.
The adjustable Sweep Source includes radio-frequency switch circuit, sweeps source controller, swept-frequency signal in one of the embodiments,
Generator and antenna；
The radio-frequency switch circuit is connect with the source controller of sweeping, for switching selection and the screening frequencies range
Corresponding frequency band sweeps source controller；
It is described to sweep source controller, it is connect with the swept signal generator, for being exported according to the screening frequencies range
Adjust the configuration parameter of swept signal generator；
The swept signal generator is connect with the antenna, for generating interference letter corresponding with the frequency range
Number, and be packaged and obtain shielded signal, the shielded signal is sent by the antenna into the screening frequencies.
The swept signal generator includes that voltage controlled oscillator and corresponding source of sweeping control list in one of the embodiments,
Member；
The voltage controlled oscillator is connect with the source controller of sweeping, for exporting shielded signal according to configuration parameter；
It is described to sweep source control unit, it is connect with the voltage controlled oscillator, for controlling the screen of the voltage controlled oscillator output
Cover signal within a preset range.
Radio frequency power amplification modules are additionally provided between the swept signal generator and antenna in one of the embodiments,；
Amplified shielded signal is transmitted to by the radio frequency power amplification modules for amplifying to the shielded signal
Antenna.
It in one of the embodiments, further include variable frequency frequency discriminator；
The variable frequency frequency discriminator, connect, for passing through respectively with the radio-frequency switch circuit and the source controller of sweeping
It states radio-frequency switch circuit and frequency detecting is carried out to swept signal generator, obtain the low end frequency and high end frequency of sweeping source；And
The configuration parameter of source controller is swept according to the low end frequency and high end frequency feedback adjustment.
In one of the embodiments, the variable frequency frequency discriminator include frequency mixer, variable frequency a reference source and in
Frequency filter；
The frequency mixer is connect with the variable frequency a reference source, intermediate-frequency filter and radio-frequency switch circuit respectively, this
Shake the reference frequency signal that signal is variable frequency frequency discriminator, receives each swept-frequency signal by the radio-frequency switch circuit and sends out
The corresponding high-frequency signal of raw device, the reference frequency signal and each high-frequency signal are mixed, and obtain mixed frequency signal, and will
The mixed frequency signal is transmitted to intermediate-frequency filter；
The intermediate-frequency filter is connect with the source controller of sweeping, for receiving the mixed frequency signal, and according to described mixed
Frequency signal carries out frequency detecting, obtains low end frequency and high end frequency；And it is adjusted according to the low end frequency and high end frequency feedback
The whole configuration parameter for sweeping source controller.
The above-mentioned radio signal shielding method and device based on adjustable Sweep Source, utilizes the module with frequency detecting function
And/or the module with frequency spectrum detection analytic function detects the frequency usage range of frequency range each in environment, to obtain
The screening frequencies range of required shielding；Using screening frequencies range as shield ranges, and then phase is generated using adjustable Sweep Source
The shielded signal answered is sent into screening frequencies.The present invention is using the screening frequencies range detected in current environment as screen
Range is covered, all kinds of places can be suitable for and shield demand, and then improve resource utilization.
Detailed description of the invention
Fig. 1 is the flow diagram of the radio signal shielding method based on adjustable Sweep Source in one embodiment；
Fig. 2 is the flow diagram of step S200 in Fig. 1；
Fig. 3 is the structural block diagram of the radio signal shielding device based on adjustable Sweep Source in one embodiment；
Fig. 4 is the structural block diagram of the radio signal shielding device based on adjustable Sweep Source in another embodiment；
Fig. 5 is the structural block diagram of adjustable Sweep Source in one embodiment；
Fig. 6 be Fig. 5 on the basis of one embodiment in adjustable Sweep Source structural block diagram；
Fig. 7 be Fig. 6 on the basis of one embodiment in adjustable Sweep Source structural block diagram；
Fig. 8 is the structural block diagram of variable frequency frequency discriminator in embodiment in Fig. 7.
In figure: 100, the module with frequency detecting function；110, the module with frequency spectrum detection analytic function；200, may be used
Adjust Sweep Source；210, radio-frequency switch circuit；220, source controller is swept；230, swept signal generator；240, antenna；250, radio frequency
Power amplifier module；260, variable frequency frequency discriminator；261, variable frequency a reference source；262, frequency mixer；263, intermediate-frequency filter.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, as shown in Figure 1, providing a kind of radio signal shielding method based on adjustable Sweep Source,
The following steps are included:
S100, using the module with frequency detecting function and/or the module with frequency spectrum detection analytic function to environment
In the frequency usage range of each frequency range detected, obtain screening frequencies range；
In some environments, the wireless router of standard uses standard bands (national standard frequency range).For example, 2.4GHz
Frequency range, 5.8GHz frequency range etc..Wherein, the working frequency of 2.4G frequency range is 2.4-2.4835GHz, this 83.5MHz frequency band is divided into
13 channels, number one channel center frequency are 2412MHz, and each channel center frequency differs 5MHz, extends respectively downwards upwards
11MHz, channel width 22MHz.Wherein, 5.8GHz frequency range and corresponding working channel number are 149-165, and corresponding centre frequency is
5745-5825MHz.Close wireless router will form channel competition relationship using identical or overlapped channels, influence each other wireless
Link-quality, in order to effectively avoid interfering with each other caused by channel overlap, close wireless router should select the letter not overlapped
Road work.Frequency range when frequency range is wireless communication.The wireless router of some foreign countries is not limited by standard bands, such as:
2.4G frequency range further includes No. 14 channel, and centre frequency 2484MHz, maximum useful frequency 2495MHz exceed China
Standard；For another example the 5.2G frequency range in the U.S., respective channels number 36~48；5.3G frequency range, respective channels number are 52-64, all exceed me
National standard has to be shielded for its frequency once other side uses.Therefore it in order to realize the comprehensive of shielding, to check
The working frequency for the full frequency band that technical standard is supported.
In the present embodiment, the module with frequency detecting function is not limited by standard bands, can be to each in environment
The frequency usage range of frequency range is detected.For example, the frequency range detected is 5.25GHz-5.3GHz；2.4GHz-
2.5GHz waiting；So here frequency range is screening frequencies range.That is, the present invention is to make the frequency in environment
Use range as screening frequencies range, rather than by the conduct shield ranges of whole standard bands.In other embodiments, may be used
To be detected using the module with frequency spectrum detection analytic function to the frequency usage range of frequency range each in environment.
S200, corresponding with screening frequencies range shielded signal is generated using adjustable Sweep Source, and by shielded signal to screen
It covers in frequency range and sends.
Specifically, adjustable Sweep Source is with the module with frequency detecting function and/or with frequency spectrum detection analytic function
Module cooperation, can detect according to the module with frequency detecting function and/or the module with frequency spectrum detection analytic function
Screening frequencies range generate corresponding shielded signal, and shielded signal is sent into screening frequencies；So shielding frequency
It can be because shielded signal forms messy code interference, so that screening frequencies range in the received message of wireless communication terminal within the scope of rate
Interior wireless communication terminal do not receive WLAN base station sending normal data, prevent wireless communication terminal from it is wireless
Lan base station establishes normal communication connection, to realize the shielding of wireless signal.
It is understood that needing to stop the transmission of shielded signal when detecting screening frequencies range；Executing step
When S100, S200 needs first to stop to execute.
The above-mentioned radio signal shielding method based on adjustable Sweep Source, using with frequency detecting function module and/or
Module with frequency spectrum detection analytic function detects the frequency usage range of frequency range each in environment, thus required for obtaining
The screening frequencies range of shielding；Using screening frequencies range as shield ranges, and then corresponding screen is generated using adjustable Sweep Source
Signal is covered to send into screening frequencies.The present invention is using the screening frequencies range detected in current environment as shielding model
It encloses, all kinds of places can be suitable for and shield demand, and then improve resource utilization.
In one embodiment, step S100 includes the following steps；Utilize module and/or tool with frequency detecting function
Each broadcast singal for having the module scans WLAN base station of frequency spectrum detection analytic function to issue carries out frequency to each broadcast singal
Spectrum analysis can quickly scan to obtain screening frequencies range.Module with frequency detecting function and/or there is frequency spectrum inspection
Scanning to each broadcast singal is carried out spectrum analysis by the module for surveying analytic function, obtains the frequency that each broadcast singal is related to, and right
Each frequency is ranked up, and is chosen highest frequency and low-limit frequency as boundary and is obtained screening frequencies range.
In one embodiment as shown in Figure 2, step S200 includes the following steps；
S210, it is switched to respectively and screening frequencies range corresponding frequency band using the radio-frequency switch circuit in adjustable Sweep Source
Swept signal generator；
S220, swept signal generator is adjusted according to screening frequencies range using the source controller of sweeping in adjustable Sweep Source
Configuration parameter；
S230, swept signal generator generate interference signal corresponding with frequency range, and are packaged and obtain shielded signal, will
Shielded signal is sent by antenna into screening frequencies.
In one embodiment, the multiple swept signal generator fortune corresponding with standard bands of radio-frequency switch circuit control
Row.Each swept signal generator corresponds to a standard bands.For example, screening frequencies range is 5.25GHz-5.3GHz, that
It can be quickly switched into swept signal generator corresponding with 5.25GHz-5.3GHz by radio-frequency switch circuit, allow these
Swept signal generator work, to improve shield effectiveness.
The source controller of sweeping can be that corresponding swept signal generator configures relevant configuration parameter according to screening frequencies range,
Swept signal generator is set to generate shielded signal according to configuration parameter.Specifically, swept signal generator is joined according to configuration
Number generates corresponding with frequency range interference signal, and is packaged and obtains shielded signal, pass through after shielded signal is combined antenna to
It is sent within the scope of screening frequencies.
Wherein, combining refers to is combined according to the signal of different frequency frequency range, can shield different frequency frequency range.Only need
It controls shielded signal and signal shielding in specified region can be realized in screening frequencies range.It is logical for the frequency division of mobile communication
Letter system, what swept signal generator generated is the interference signal of down channel, and this interference signal using down channel is right
The uplink of base station has no effect.For wifi system, what swept signal generator generated is the interference signal of uplink and downlink channel.
It should be understood that although each step in the flow chart of Fig. 1-2 is successively shown according to the instruction of arrow,
These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 1-2
Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately
It executes.
In one embodiment, as shown in figure 3, a kind of radio signal shielding device based on adjustable Sweep Source, device packet
Include module 100 and adjustable Sweep Source 200 with frequency detecting function: the module 100 with frequency detecting function is swept with adjustable
Frequency source 200 connects, and detects for the frequency usage range to frequency range each in environment, obtains screening frequencies range；It is adjustable to sweep
Frequency source 200 for generating shielded signal corresponding with screening frequencies range, and shielded signal is sent out into screening frequencies
It send；
And/or；
As shown in figure 4, device includes the module 110 and adjustable Sweep Source 200 with frequency spectrum detection analytic function；
Module 110 with frequency spectrum detection analytic function is connect with adjustable Sweep Source 200, for frequency range each in environment
Frequency usage range detected, obtain screening frequencies range；Adjustable Sweep Source 200, for generating and screening frequencies range
Corresponding shielded signal, and shielded signal is sent into screening frequencies.
The present invention can be suitable for all kinds of places using the screening frequencies range detected in current environment as shield ranges
Shielding demand, and then improve resource utilization.
As shown in Figure 3 and Figure 4, each device in device is described in detail below.
In one embodiment, the module 100 with frequency detecting function and the module with frequency spectrum detection analytic function
110 all can be have mobile terminal, frequency spectrograph and the router etc. of frequency spectrum inspection software.Wherein, mobile terminal includes not
It is limited to mobile phone, PC and plate, corresponding frequency spectrum inspection software is loaded on mobile terminal, the parameter of base station can be obtained such as
Channel number frequency, bandwidth, signal strength etc..Wherein, frequency spectrograph also can analysis spectrum, obtain the working channel of base station, bandwidth and
The information such as signal strength.Router on the market mostly has channel automatic function selecting now, the detection week in equipment starting
Wireless channel distribution situation is enclosed, optimum channel work is selected.Channel overlap interferes with each other between will lead to wireless routing, and then influences
Wireless transmission quality, channel automatic function selecting make router that best effort channel be arranged automatically according to wireless environment around,
Effectively avoid co-channel interference/competition.That is router also can be by obtaining the work of other routers with software in it
The parameters such as channel, signal strength.
In one embodiment, as shown in figure 5, adjustable Sweep Source 200 includes radio-frequency switch circuit 210, sweeps source controller
220, swept signal generator 230 and antenna 240；Radio-frequency switch circuit 210 connect with swept signal generator 230, is used for
The swept signal generator 230 of switching selection and screening frequencies range corresponding frequency band；Source controller 220 is swept, is sent out with swept-frequency signal
Raw device 230 connects, for exporting the configuration parameter for adjusting swept signal generator 230 according to screening frequencies range；Swept-frequency signal
Generator 230 is connect with antenna 240, for generating interference signal corresponding with frequency range, and is packaged and is obtained shielded signal,
Shielded signal is sent by antenna 240 into screening frequencies.
One radio-frequency switch circuit 210 is connect with multiple source controllers 220 of sweeping, and specific connection type can be by applicable field
Scape does corresponding adjustment.The on-off of 210 internal components of radio-frequency switch circuit accordingly sweeps unlatching or the pass of source controller 220 to realize
It closes.In one scenario, the multiple frequency ranges of multiple shieldings are generally required, that is to say, that there are multiple source controllers 220 and corresponding swept
Swept signal generator 230 is working.Sweeping source controller 220 is according to screening frequencies range configuration parameter output voltage number control
Signal processed, voltage digital control signal can control swept signal generator 230 and export the low end frequency of shielded signal and high-end
Frequency.Sweeping source controller 220 can also join according to from variable frequency frequency discriminator 260 and to the configuration of corresponding screening frequencies range
Number is adjusted, the configuration parameter after output adjustment, to improve neutron intensity.
In one embodiment, swept signal generator 230 includes voltage controlled oscillator and corresponding sweeps source control unit；Pressure
Oscillator is controlled, is connect with source controller 220 is swept, for exporting shielded signal according to configuration parameter；Source control unit is swept, and it is voltage-controlled
Oscillator connection, for controlling the shielded signal of voltage controlled oscillator output within a preset range.
Specifically, voltage controlled oscillator refers to that output frequency and input control voltage have the oscillating circuit of corresponding relationship；So
Sweeping the control voltage that source controller 220 inputs is the voltage digital control signal in configuration parameter, i.e., controllable cutout screen covers
Signal meets the requirement of screening frequencies range.In one embodiment, voltage controlled oscillator includes triangular-wave generator and and triangle
The microwave frequency band VCO unit of wave producer connection；Triangular-wave generator can be by controllable voltage comparator (or 555 timers) group
At；Microwave frequency band VCO unit may include the program-controlled VCO of each frequency range；For example, the journey of program-controlled VCO, 5.2G frequency range of 2.4G frequency range
Control the program-controlled VCO etc. of VCO and 5.8G frequency range.That is, constituting voltage controlled oscillator source as voltage-controlled by controllable voltage comparator
The input of oscillator is made of the comparison voltage of the controllable voltage comparator the DAC output end of single-chip microcontroller, thus corresponding change
The starting voltage and final voltage of voltage controlled oscillator.Rising for voltage controlled oscillator can be changed by changing the numerical value of DAC in this way
Beginning frequency and termination frequency.Source control unit is swept, can be avoided since temperature change generates frequency drift.In the present embodiment,
Model WTL2WN2600001, LM339 etc. of voltage controlled oscillator.
In one embodiment, sweeping source control unit can be separately provided.When being separately provided, that is, sweep source control unit with
Swept signal generator 230 connects, namely connect with microwave frequency band VCO unit.
As shown in fig. 6, being additionally provided between swept signal generator 230 and antenna 240 on the basis of in Fig. 5 embodiment
Radio frequency power amplification modules 250；Radio frequency power amplification modules 250 transmit amplified shielded signal for amplifying to shielded signal
To antenna 240；To have sufficiently large radio frequency power output, shield effectiveness is ensured.Radio frequency power amplification modules 250 can be band and open
The radio frequency power amplification modules of pass can adjust according to usage scenario.The concrete model of radio frequency power amplification modules 250 can be by its application
Specific frequency range or power decision, to this and be not limited.
To further increase shield effectiveness, as shown in fig. 7, further including variable frequency mirror on the basis of in Fig. 6 embodiment
Frequency device 260；Variable frequency frequency discriminator 260, respectively with radio-frequency switch circuit 210 and sweep source controller 220 and connect, for by penetrating
Frequency switching circuit 210 carries out frequency detecting to swept signal generator 230, obtains the low end frequency and high end frequency of sweeping source；
And the configuration parameter of source controller 220 is swept according to low end frequency and high end frequency feedback adjustment.
In one embodiment, as shown in figure 8, variable frequency frequency discriminator 260 includes frequency mixer 262, variable frequency benchmark
Source 261 and intermediate-frequency filter 263；Frequency mixer 262, respectively with variable frequency a reference source 261, intermediate-frequency filter 263 and penetrate
Frequency switching circuit 210 connects, and local oscillation signal is the reference frequency signal of variable frequency frequency discriminator 260, passes through radio-frequency switch circuit
210 receive the corresponding high-frequency signal of each swept signal generator 230, and reference frequency signal and each high-frequency signal are mixed
Frequently, mixed frequency signal is obtained, and mixed frequency signal is transmitted to intermediate-frequency filter 263；Intermediate-frequency filter 263, and sweeps source controller 220
Connection carries out frequency detecting for receiving mixed frequency signal, and according to mixed frequency signal, obtains low end frequency and high end frequency；And root
The configuration parameter of source controller 220 is swept according to low end frequency and high end frequency feedback adjustment.
In the present embodiment, radio-frequency switch circuit 210 receives the corresponding high-frequency signal of each swept signal generator 230；
It can be the height of the outputs such as the program-controlled VCO of program-controlled VCO and 5.8G frequency range of program-controlled VCO, 5.2G frequency range for receiving 2.4G frequency range
Frequency signal.
Specifically, variable frequency frequency discriminator 260 may include ADF4355 chip and its peripheral circuit, it is based on ADF4355 core
The variable frequency frequency discriminator 260 of piece exploitation, has the characteristics that wide frequency range, and highest frequency is up to 6.6GHz.Frequency mixer 262
Each frequency sweep that may be constructed frequency discriminator with intermediate-frequency filter 263, can integrate each frequency signal, and obtained according to detection it is low
Hold frequency and high end frequency；By controllably sweeping source controller 220, each swept signal generator 230 is corrected, the function of correction is reached
Can, improve shielding precision.
Specific restriction about the radio signal shielding device based on adjustable Sweep Source 200 may refer to above for base
In the restriction of the radio signal shielding method of adjustable Sweep Source 200, details are not described herein.
Radio signal shielding device provided by the present application based on adjustable Sweep Source, can be real based on chip AD9364 exploitation
It is existing, and virtual base station etc. can also be formed by software radio, so that it is powerful to have the function of device, it is suitable for more fields
Scape.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (9)
1. a kind of radio signal shielding method based on adjustable Sweep Source, which is characterized in that the described method includes:
Using the module with frequency detecting function and/or the module with frequency spectrum detection analytic function to each frequency range in environment
Frequency usage range is detected, and screening frequencies range is obtained；
Corresponding with screening frequencies range shielded signal is generated using adjustable Sweep Source, and by the shielded signal to described
It is sent within the scope of screening frequencies.
2. the method according to claim 1, wherein it is described using have frequency detecting function module and/or
Module with frequency spectrum detection analytic function detects the frequency usage range of frequency range each in environment, obtains screening frequencies model
It encloses, comprising:
Using the module with frequency detecting function and/or with the module scans WLAN of frequency spectrum detection analytic function
Each broadcast singal that base station issues carries out spectrum analysis to each broadcast singal, obtains screening frequencies range.
3. the method according to claim 1, wherein described generated and the screening frequencies using adjustable Sweep Source
The corresponding shielded signal of range, and the shielded signal is sent into the screening frequencies, comprising:
It is switched to the frequency sweep with the screening frequencies range corresponding frequency band respectively using the radio-frequency switch circuit in adjustable Sweep Source
Signal generator；
Source controller is swept according to the configuration of screening frequencies range adjusting swept signal generator using in adjustable Sweep Source
Parameter；
Swept signal generator generates interference signal corresponding with the frequency range, and is packaged and obtains shielded signal, will be described
Shielded signal is sent by antenna into the screening frequencies.
4. a kind of radio signal shielding device based on adjustable Sweep Source, which is characterized in that described device includes having frequency inspection
The module of brake and adjustable Sweep Source:
The module with frequency detecting function, connect with the adjustable Sweep Source, for the frequency to frequency range each in environment
Use scope is detected, and screening frequencies range is obtained；
The adjustable Sweep Source, for generating corresponding with screening frequencies range shielded signal, and by the shielded signal
It is sent into the screening frequencies；
And/or；
Described device includes having the module and adjustable Sweep Source of frequency detecting function；
The module with frequency spectrum detection analytic function, connect with the adjustable Sweep Source, for frequency range each in environment
Frequency usage range is detected, and screening frequencies range is obtained；
The adjustable Sweep Source, for generating corresponding with screening frequencies range shielded signal, and by the shielded signal
It is sent into the screening frequencies.
5. device according to claim 4, which is characterized in that the adjustable Sweep Source includes radio-frequency switch circuit, sweeps source
Controller, swept signal generator and antenna；
The radio-frequency switch circuit is connect with the swept signal generator, for switching selection and the screening frequencies range
The swept signal generator of corresponding frequency band；
It is described to sweep source controller, it connect with the swept signal generator, is adjusted for being exported according to the screening frequencies range
The configuration parameter of swept signal generator；
The swept signal generator is connect with the antenna, for generating interference signal corresponding with the frequency range, and
Packing obtains shielded signal, and the shielded signal is sent by the antenna into the screening frequencies.
6. device according to claim 5, which is characterized in that the swept signal generator includes voltage controlled oscillator and right
That answers sweeps source control unit；
The voltage controlled oscillator is connect with the source controller of sweeping, for exporting shielded signal according to configuration parameter；
It is described to sweep source control unit, it is connect with the voltage controlled oscillator, for controlling the shielding letter of the voltage controlled oscillator output
Number within a preset range.
7. device according to claim 5, which is characterized in that be additionally provided with and penetrate between the swept signal generator and antenna
Frequency power amplifier module；
Amplified shielded signal is transmitted to antenna for amplifying to the shielded signal by the radio frequency power amplification modules.
8. device according to claim 5, which is characterized in that further include variable frequency frequency discriminator；
The variable frequency frequency discriminator, connect with the radio-frequency switch circuit and the source controller of sweeping respectively, for being penetrated by described
Frequency switching circuit carries out frequency detecting to swept signal generator, obtains the low end frequency and high end frequency of sweeping source；And according to
The configuration parameter of source controller is swept described in the low end frequency and high end frequency feedback adjustment.
9. device according to claim 8, which is characterized in that the variable frequency frequency discriminator includes frequency mixer, variable ratio frequency changer
Rate a reference source and intermediate-frequency filter；
The frequency mixer is connect with the variable frequency a reference source, intermediate-frequency filter and radio-frequency switch circuit respectively, local oscillator letter
Number it is the reference frequency signal of variable frequency frequency discriminator, passes through the radio-frequency switch circuit and receive each swept signal generator
Corresponding high-frequency signal, the reference frequency signal and each high-frequency signal are mixed, obtain mixed frequency signal, and will be described
Mixed frequency signal is transmitted to intermediate-frequency filter；
The intermediate-frequency filter is connect with the source controller of sweeping, and is believed for receiving the mixed frequency signal, and according to the mixing
Number carry out frequency detecting, obtain low end frequency and high end frequency；And according to the low end frequency and high end frequency feedback adjustment institute
State the configuration parameter for sweeping source controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740735.0A CN110474704A (en) | 2019-08-12 | 2019-08-12 | Radio signal shielding method and device based on adjustable Sweep Source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740735.0A CN110474704A (en) | 2019-08-12 | 2019-08-12 | Radio signal shielding method and device based on adjustable Sweep Source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110474704A true CN110474704A (en) | 2019-11-19 |
Family
ID=68510636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910740735.0A Pending CN110474704A (en) | 2019-08-12 | 2019-08-12 | Radio signal shielding method and device based on adjustable Sweep Source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110474704A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010252A (en) * | 2019-12-04 | 2020-04-14 | 杭州恒生数字设备科技有限公司 | Method for conducting broadband subsection guiding shielding on digital transmission equipment |
| CN111147158A (en) * | 2019-12-04 | 2020-05-12 | 杭州恒生数字设备科技有限公司 | Method for shielding multi-frequency WIFI signal |
| CN112087279A (en) * | 2020-09-21 | 2020-12-15 | 北京创联易讯科技有限公司 | Signal shielding system for prison |
| CN113131629A (en) * | 2019-12-31 | 2021-07-16 | 圣邦微电子（北京）股份有限公司 | Wireless charging device and detection module thereof |
| CN114978410A (en) * | 2022-07-28 | 2022-08-30 | 杭州恒生数字设备科技有限公司 | Method and system for shielding radio signal |
| CN115835614A (en) * | 2022-12-28 | 2023-03-21 | 无锡盛和信物联科技有限公司 | Wireless signal shielding device |
| CN116015531A (en) * | 2022-12-30 | 2023-04-25 | 深圳心派科技有限公司 | Signal interference method, signal interference device and computer readable storage medium |
| CN116192326A (en) * | 2023-03-22 | 2023-05-30 | 天津安力信通讯科技有限公司 | Method and system for shielding mobile communication signals |
| CN116669142A (en) * | 2023-07-26 | 2023-08-29 | 天津安力信通讯科技有限公司 | Method for shielding wireless network communication signal |
| CN116909177A (en) * | 2023-09-07 | 2023-10-20 | 中星联华科技（北京）有限公司 | Sweep frequency parameter control system and method and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070174021A1 (en) * | 2004-07-19 | 2007-07-26 | Bernard Kyle L | Realtime power mask trigger |
| CN101123762A (en) * | 2007-09-19 | 2008-02-13 | 长春卓尔信息安全产业股份有限公司 | Shielding method and device for environment protection mobile signals |
| CN102868421A (en) * | 2012-05-30 | 2013-01-09 | 赵训威 | Method, device and system for signal shielding of wireless communication system |
| CN104539386A (en) * | 2014-12-26 | 2015-04-22 | 成都杰联祺业电子有限责任公司 | Interconnected type full-band signal shielding device, system and method |
| CN106257850A (en) * | 2015-06-17 | 2016-12-28 | 凯瑟雷恩工厂两合公司 | For producing the method and system of interference signal |
| CN107182060A (en) * | 2017-06-05 | 2017-09-19 | 中兴国通通讯装备技术（北京）有限公司 | A kind of method and its device for suppressing WIFI signal co-channel interference |
-
2019
- 2019-08-12 CN CN201910740735.0A patent/CN110474704A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070174021A1 (en) * | 2004-07-19 | 2007-07-26 | Bernard Kyle L | Realtime power mask trigger |
| CN101123762A (en) * | 2007-09-19 | 2008-02-13 | 长春卓尔信息安全产业股份有限公司 | Shielding method and device for environment protection mobile signals |
| CN102868421A (en) * | 2012-05-30 | 2013-01-09 | 赵训威 | Method, device and system for signal shielding of wireless communication system |
| CN104539386A (en) * | 2014-12-26 | 2015-04-22 | 成都杰联祺业电子有限责任公司 | Interconnected type full-band signal shielding device, system and method |
| CN106257850A (en) * | 2015-06-17 | 2016-12-28 | 凯瑟雷恩工厂两合公司 | For producing the method and system of interference signal |
| CN107182060A (en) * | 2017-06-05 | 2017-09-19 | 中兴国通通讯装备技术（北京）有限公司 | A kind of method and its device for suppressing WIFI signal co-channel interference |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147158A (en) * | 2019-12-04 | 2020-05-12 | 杭州恒生数字设备科技有限公司 | Method for shielding multi-frequency WIFI signal |
| CN111010252A (en) * | 2019-12-04 | 2020-04-14 | 杭州恒生数字设备科技有限公司 | Method for conducting broadband subsection guiding shielding on digital transmission equipment |
| CN113131629A (en) * | 2019-12-31 | 2021-07-16 | 圣邦微电子（北京）股份有限公司 | Wireless charging device and detection module thereof |
| CN113131629B (en) * | 2019-12-31 | 2024-02-06 | 圣邦微电子（北京）股份有限公司 | Wireless charging device and detection module thereof |
| CN112087279A (en) * | 2020-09-21 | 2020-12-15 | 北京创联易讯科技有限公司 | Signal shielding system for prison |
| CN112087279B (en) * | 2020-09-21 | 2024-02-02 | 北京创联易讯科技有限公司 | Signal shielding system for prison |
| CN114978410A (en) * | 2022-07-28 | 2022-08-30 | 杭州恒生数字设备科技有限公司 | Method and system for shielding radio signal |
| CN114978410B (en) * | 2022-07-28 | 2022-11-18 | 杭州恒生数字设备科技有限公司 | Method and system for shielding radio signal |
| CN115835614B (en) * | 2022-12-28 | 2024-01-26 | 无锡盛和信物联科技有限公司 | Wireless signal shielding device |
| CN115835614A (en) * | 2022-12-28 | 2023-03-21 | 无锡盛和信物联科技有限公司 | Wireless signal shielding device |
| CN116015531A (en) * | 2022-12-30 | 2023-04-25 | 深圳心派科技有限公司 | Signal interference method, signal interference device and computer readable storage medium |
| CN116015531B (en) * | 2022-12-30 | 2023-09-01 | 深圳心派科技有限公司 | Signal interference method, signal interference device and computer readable storage medium |
| CN116192326A (en) * | 2023-03-22 | 2023-05-30 | 天津安力信通讯科技有限公司 | Method and system for shielding mobile communication signals |
| CN116192326B (en) * | 2023-03-22 | 2023-08-01 | 天津安力信通讯科技有限公司 | Method and system for shielding mobile communication signals |
| CN116669142B (en) * | 2023-07-26 | 2023-12-29 | 天津安力信通讯科技有限公司 | Method for shielding wireless network communication signal |
| CN116669142A (en) * | 2023-07-26 | 2023-08-29 | 天津安力信通讯科技有限公司 | Method for shielding wireless network communication signal |
| CN116909177B (en) * | 2023-09-07 | 2024-01-05 | 中星联华科技（北京）有限公司 | Sweep frequency parameter control system and method and electronic equipment |
| CN116909177A (en) * | 2023-09-07 | 2023-10-20 | 中星联华科技（北京）有限公司 | Sweep frequency parameter control system and method and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110474704A (en) | Radio signal shielding method and device based on adjustable Sweep Source | |
| JP7022799B2 (en) | Reference signal resource search technique in wireless communication | |
| KR101684277B1 (en) | Operating a voltage regulator at a switching frequency selected to reduce spurious signals | |
| US9549332B2 (en) | Spectrum-aware RF management and automatic conversion of access points to spectrum monitors and hybrid mode access points | |
| CN110572235B (en) | Signal shielding device and method | |
| US9241300B2 (en) | Method for scanning in a multi-mode multi-antenna device | |
| CN103069882B (en) | Subscriber equipment dual operation in authorizing frequency spectrum and unlicensed spectrum | |
| CN107277893B (en) | Method and apparatus for cellular search | |
| CN112586013B (en) | Wireless communication method, terminal device and network device | |
| CN103004256A (en) | Method and system for communicaion implementation for terminal device | |
| WO2009019129A1 (en) | Method for performing a measurement by a communication device and communication device | |
| EP2224770B1 (en) | Method and equipment for dynamically updating neighboring cell lists in heterogenous networks | |
| CN110958075B (en) | Signal shielding method, system, readable storage medium and device | |
| CN1218500C (en) | Double frequency band transceiver and its control method | |
| WO2023011288A1 (en) | Signal processing system and method | |
| Babu et al. | A low-cost software defined radio based Cognitive Radio test-bed for LTE networks | |
| CN107359958B (en) | Frequency agility intelligence jammer | |
| Klozar et al. | Effect of co-existence interferences on QoS of HSPA/WCDMA mobile networks | |
| CN103731904B (en) | A kind of frequency search control method, device, network side equipment and terminal | |
| CN1640085A (en) | 3G radio device | |
| CN102740348A (en) | Method and system of measurement processing | |
| CN102711119B (en) | CPC transmission methods and radio switch-in method and system based on CPC | |
| CN111543075B (en) | Frequency band selection method and device | |
| Maqsood | Implementation and performance analysis of software defined radio (SDR) based LTE platform for truck connectivity application | |
| Ahmad et al. | Communication system design for white-fi (802.11 af) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191119 |