CN206294151U - A kind of DDS signal sources for data signal interferometer - Google Patents
A kind of DDS signal sources for data signal interferometer Download PDFInfo
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- CN206294151U CN206294151U CN201621379516.2U CN201621379516U CN206294151U CN 206294151 U CN206294151 U CN 206294151U CN 201621379516 U CN201621379516 U CN 201621379516U CN 206294151 U CN206294151 U CN 206294151U
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Abstract
The utility model provides a kind of DDS signal sources for data signal interferometer, belong to jamming field, including frequency control circuit, accumulator, phase register, adder, phase-control circuit, clock circuit, signal inquiry watch circuit, D/A converting circuit and filter circuit.The output end of the frequency control circuit is connected with accumulator；The accumulated device of output end of the accumulator is connected with phase register；The output end of the phase register is connected with adder and accumulator respectively；The output end of the adder is connected with signal inquiry watch circuit；The output end of the phase-control circuit is connected with adder；The signal inquiry watch circuit is connected through D/A converting circuit with filter circuit；The output end of the clock circuit is connected with phase register, signal inquiry watch circuit sum analog conversion circuit.
Description
Technical field
The utility model is related to interferometer field, more particularly to a kind of DDS signal sources for data signal interferometer.
Background technology
In the last few years, cheating either was taken an exam still using the ringing circuit principle making of mobile phone using mobile phone
Mobile phone remote bomb carries out terrorist activity, is all becoming increasingly rampant, and we must as early as possible find more preferably more effective countermeasure.Mobile phone
Signal perturbation technique can be applied in following occasion：Prevent all kinds of examination mobile phones from practising fraud；It is anti-to fear, mainly tackle mobile phone remote and fry
Bullet；Some have the occasion of strict supervision requirement to mobile phone, such as some military restricted zones, gas station, conference centre, important building
Thing etc..
At present, for the research of mobile phone signal perturbation technique disturbed using single standard signal, the interference effect of generation
It is really unsatisfactory, usually occur disturbing blind spot problem.Existing interferometer causes noise spectrum density not high enough, there is interference blind
Point, interference effect is general, and power is high, it is difficult to meet the occasion for having strict supervision requirement to mobile phone.And existing interferometer letter
Number source control trouble, it is impossible to according to timely being produced required signal source, jitter etc. the need for interferometer.
Utility model content
For above-mentioned deficiency, the utility model provides a kind of DDS signal sources for data signal interferometer.
The utility model solves the above problems by the following technical programs：
A kind of DDS signal sources for data signal interferometer, including frequency control circuit, accumulator, phase register,
Adder, phase-control circuit, clock circuit, signal inquiry watch circuit, D/A converting circuit and filter circuit；
The output end of the frequency control circuit is connected with accumulator；The accumulated device of output end and phase of the accumulator
Register is connected；The output end of the phase register is connected with adder and accumulator respectively；The output end of the adder
It is connected with signal inquiry watch circuit；The output end of the phase-control circuit is connected with adder；The signal inquires about watch circuit
It is connected with filter circuit through D/A converting circuit；The output end of the clock circuit and phase register, signal inquiry table electricity
Road and D/A converting circuit are connected.
In such scheme, preferably filter circuit uses low pass filter, and low pass filter is used using 6 ranks
Chebyshev filter, Chebyshev filter is formed by around inductance with the capacitance connection of 2 ~ 100pF of capacitance.
In such scheme, preferably D/A converting circuit is the digit weighted-voltage D/A converter of integrated form 12.
In such scheme, preferably signal inquiry watch circuit is the waveform signal inquiry table of sinusoidal and cosine.
In such scheme, preferably frequency control circuit is frequency control word.
In such scheme, preferably phase-control circuit is phase control words.
Advantage of the present utility model is with effect：
1st, the utility model has fairly good frequency and phase resolution（The controlled range of frequency reaches μ Hz grades, phase controlling
Less than 0.09 °）, quick signal conversion can be carried out（Export time/second of switching rate 300,000 of DAC）；
2nd, frequency control circuit of the present utility model and phase-control circuit are interfered the control of the control module of instrument, from
And can cause that interferometer produces corresponding signal with state as needed.
Brief description of the drawings
Fig. 1 is the utility model system block diagram；
Fig. 2 is the utility model filter circuit schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to embodiments.
A kind of DDS signal sources for data signal interferometer, as shown in figure 1, including frequency control circuit, accumulator,
Phase register, adder, phase-control circuit, clock circuit, signal inquiry watch circuit, D/A converting circuit and wave filter electricity
Road.The controlled range of frequency of the present utility model reaches μ Hz grades, and phase controlling is less than 0.09 °.
The output end of the frequency control circuit is connected with accumulator；The accumulated device of output end and phase of the accumulator
Register is connected；The output end of the phase register is connected with adder and accumulator respectively；The output end of the adder
It is connected with signal inquiry watch circuit；The output end of the phase-control circuit is connected with adder；The signal inquires about watch circuit
It is connected with filter circuit through D/A converting circuit；The output end of the clock circuit and phase register, signal inquiry table electricity
Road and D/A converting circuit are connected.
The filter circuit uses low pass filter as described in Figure 2, and low pass filter is used using 6 rank Qie Bixue
Husband's wave filter, Chebyshev filter is formed by around inductance with the capacitance connection of 2 ~ 100pF of capacitance.By electric capacity and inductance in parallel
Connection, and be grounded by another electric capacity, realize the filtering process of single order.
The D/A converting circuit is the digit weighted-voltage D/A converter of integrated form 12.Signal turns data signal through D/A converting circuit
It is analog signal, is filtered in device circuit after filtering, it is possible to obtain corresponding waveform.
The signal inquiry watch circuit is the waveform signal inquiry table of sinusoidal and cosine.
The frequency control circuit is frequency control word.The phase-control circuit is phase control words.FREQUENCY CONTROL electricity
Road and phase-control circuit be interfered instrument control module control so that interferometer as needed with state produce
The corresponding signal of life.
The main core of this practicality is accumulator, phase register and adder, the frequency of accumulator primary recipient
Control, and adder primary recipient be phase control.By accumulator add up and obtain corresponding frequency signal,
Enter line phase by phase register to deposit, and output feeds back to accumulator, is exported in the addition for entering line phase by adder
Watch circuit is inquired about to signal.
Below the preferred embodiment that the utility model is created is illustrated, but the utility model is not limited to
Embodiment, those of ordinary skill in the art can also make a variety of etc. on the premise of without prejudice to the utility model creative spirit
Same modification or replacement, these equivalent modifications or replacement are all contained in scope of the present application.
Claims (6)
1. a kind of DDS signal sources for data signal interferometer, it is characterised in that：Including frequency control circuit, accumulator, phase
Bit register, adder, phase-control circuit, clock circuit, signal inquiry watch circuit, D/A converting circuit and wave filter electricity
Road；
The output end of the frequency control circuit is connected with accumulator；The accumulated device of output end of the accumulator is deposited with phase
Device is connected；The output end of the phase register is connected with adder and accumulator respectively；The output end of the adder and letter
Number inquiry watch circuit connection；The output end of the phase-control circuit is connected with adder；The signal inquires about watch circuit through number
Analog conversion circuit is connected with filter circuit；The output end of the clock circuit and phase register, signal inquiry watch circuit and
D/A converting circuit is connected.
2. a kind of DDS signal sources for data signal interferometer according to claim 1, it is characterised in that：The filter
Ripple device circuit uses low pass filter, and low pass filter is used using 6 rank Chebyshev filters, Chebyshev filter
Formed with the capacitance connection of 2 ~ 100pF of capacitance by around inductance.
3. a kind of DDS signal sources for data signal interferometer according to claim 1, it is characterised in that：The number
Analog conversion circuit is the digit weighted-voltage D/A converter of integrated form 12.
4. a kind of DDS signal sources for data signal interferometer according to claim 1, it is characterised in that：The letter
Number inquiry watch circuit is sinusoidal and the waveform signal inquiry table of cosine.
5. a kind of DDS signal sources for data signal interferometer according to claim 1, it is characterised in that：The frequency
Rate control circuit is frequency control word.
6. a kind of DDS signal sources for data signal interferometer according to claim 1, it is characterised in that：The phase
It is phase control words that position controls circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621379516.2U CN206294151U (en) | 2016-12-15 | 2016-12-15 | A kind of DDS signal sources for data signal interferometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621379516.2U CN206294151U (en) | 2016-12-15 | 2016-12-15 | A kind of DDS signal sources for data signal interferometer |
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| Publication Number | Publication Date |
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| CN206294151U true CN206294151U (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621379516.2U Active CN206294151U (en) | 2016-12-15 | 2016-12-15 | A kind of DDS signal sources for data signal interferometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425851A (en) * | 2017-08-09 | 2017-12-01 | 京东方科技集团股份有限公司 | Frequency compensator, electronic equipment and frequency compensation method |
| CN108132393A (en) * | 2017-09-25 | 2018-06-08 | 深圳市唐诚兴业科技有限公司 | A kind of interference signal source system |
-
2016
- 2016-12-15 CN CN201621379516.2U patent/CN206294151U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425851A (en) * | 2017-08-09 | 2017-12-01 | 京东方科技集团股份有限公司 | Frequency compensator, electronic equipment and frequency compensation method |
| CN108132393A (en) * | 2017-09-25 | 2018-06-08 | 深圳市唐诚兴业科技有限公司 | A kind of interference signal source system |
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