CN107800494A - A kind of VHF frequency ranges thunder and lightning signal simulator - Google Patents
A kind of VHF frequency ranges thunder and lightning signal simulator Download PDFInfo
- Publication number
- CN107800494A CN107800494A CN201610746021.7A CN201610746021A CN107800494A CN 107800494 A CN107800494 A CN 107800494A CN 201610746021 A CN201610746021 A CN 201610746021A CN 107800494 A CN107800494 A CN 107800494A
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- thunder
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- frequency ranges
- vhf frequency
- signal simulator
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3913—Predictive models, e.g. based on neural network models
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Amplifiers (AREA)
Abstract
A kind of VHF frequency ranges thunder and lightning signal simulator, suitable for UAV system field.Thunder and lightning signal simulator is made up of phase locked looped function circuit, clock driving function circuit, low noise power amplification circuit, Dynamic Slope Compensation Circuit design.Improve output signal power, while effectively inhibit that amplifier signal spectrum caused by non-linear distortion is mixed and disorderly, and circuit structure is compact, small volume, working stability, improve operating efficiency, it is low in energy consumption, and there is good anti-interference and reliability.
Description
Art
The present invention relates to a kind of VHF frequency ranges thunder and lightning signal simulator, suitable for UAV system field.
Background technology
Thunder and lightning be between air medium cloud or cloud ground between after substantial amounts of positron-electron aggregation saturation abrupt release it is a kind of common
Natural phenomena, it discharges huge energy in generating process, have high current, high voltage, the feature of strong electromagnetic radiation.Although
Compared with the natural calamities such as arid, ancient measure of length, equal to 8 cun wind, earthquake, economic asset loss caused by Lightning Disaster and personnel's injury are not so
It is prominent, but with social informatization and digitized deep, threat of the Lightning Disaster to human society increasingly increases, especially
The data safety of the key departments such as finance, communication, electric power, insurance, national defence and equipment stable operation are even more to protrude.Therefore people couple
The protection of Lightning Disaster proposes higher requirement.
Many scientific research institutions of phase at end of the eighties in last century China start to carry out lighting location technical research, and oneself is through forming at present
Certain technical capability.But the domestic survey whether to grow up from Broadband interferometer or on the basis of narrow-band interference instrument
To alignment system, in data acquisition, arrival bearing's estimation and the data acquisition of TDOA estimation, particularly big data quantity and storage side
Also technology is realized without complete in face.Therefore, domestic lightening detection system common concern in ground dodge thunder and lightning signal analysis and
Its location technology, the independent development system of thunder observation is also dodged without complete cloud so far.Using the Central China University of Science and Technology as main power
Measure the Eleventh Five-Year Plan national science and technology support emphasis countries in the world undertaken all quite pay attention to lightning monitoring positioning new technology research and
Using lightening detection alignment system, core position being in research fields such as the monitorings, positioning and protection of thunder and lightning, can be thunder
Forecast, disaster fast positioning and the post-disaster reconstruction of electric disaster provide important information foundation.At present, almost all of developed country
National or zonal lightning monitoring network is all established with area.As China is engaged in the input of Lightning Disaster and detection study
Continue to increase, corresponding lightning monitoring forecast system oneself through progressively putting into operation.Therefore, lightening detection alignment system is being combined
Practical application request, demonstration, device element type selecting from theoretical scheme are realized to system hardware, propose a kind of thunder and lightning signal imitation
The total solution of device design, it is significant subsequently to debug offer help for related lightning monitoring forecast system.
The content of the invention
The present invention provides a kind of VHF frequency ranges thunder and lightning signal simulator, by improving letter to the design optimization of analog circuit
Number source output signal anti-clutter interference performance；Eliminating the noise in radiation signal passband and spurious signal influences；Pass through multistage
Low-noise amplifier cascading improves output signal power, while effectively inhibits amplifier caused by non-linear distortion
Signal spectrum is mixed and disorderly so that the frequency spectrum of thunder and lightning signal simulator output signal is very clean.Circuit structure is compact, small volume, work
Stablize, improve operating efficiency, it is low in energy consumption, and there is good anti-interference and reliability.
The technical solution adopted in the present invention is.
VHF frequency range thunder and lightning signal simulators are by phase locked looped function circuit, clock driving function circuit, low noise power amplification
Circuit, Dynamic Slope Compensation Circuit design composition.
The phase locked looped function circuit selects the Si4133 double waves of silica company (Silicon Laboratories) production
Section phase-locked loop chip is core devices, and the chip provides radio frequency, intermediate frequency output, possesses 24-pin TSSOP and 28-pin QFN two
The different encapsulation of kind, need to be the chip power supply using 3.0V dc sources.
The output level conversion ratio of clock driving function circuit selection light Nano semiconductor company (ONSemi) production
Average delay is even lower in the ns orders of magnitude, using the teaching of the invention it is possible to provide ECL differential signals.The MC100LVEP16 clocks driving core of output
Piece is core devices.ECL circuits are made up of difference pipe and emitter follower, and ECL circuits can effectively reduce clock phase shake, have defeated
It is big to enter impedance, the features such as anti-common mode disturbances ability is strong, and signal detection ability is high, and driving force is strong.Due to selected clock point
The output impedance of frequency configuration circuit is high resistant, is the impedance matching of holding circuit front and back end, it is necessary to carry out impedance matching to circuit.Separately
On the one hand, clock driver chip output dc-couple level, it is only applicable to the situation of short range transmission clock signal.Therefore, it is electric
Road layout requirements driving chip and DA are as close possible to while requiring that printed circuit board copper foil impedance matches with signal line impedance.
The low noise power amplification circuit uses the Gali_5+ of microelectronic circuit company (Mini-Circuits) production
Type low noise amplifier is as core devices.Gali-5 types low noise amplifier is coordinating appropriate R, L, C member
Its gain of part composition peripheral circuit is up to 24dB, and corresponding noise coefficient is especially suitable for applying in thunder and lightning to be only 0.68dB
In signal simulator.Due to power amplifier, self-heating temperature is higher at work, in specific printed circuit board placement-and-routing
Shi Yaoqiu chip bottoms are contacted well with ground level in favor of radiating.The functional circuit is applied to two-stage amplifying circuit.
The Dynamic Slope Compensation Circuit uses BiCOMS techniques, can be changed according to defeated people, output voltage and changed automatically
Become the Dynamic Slope Compensation Circuit of compensation signal slope.Amplifier A1, resistance R1, R2, R3, R4 constitute a subtracter electricity
Road.M3, MQ, M5 form current mirror, and M1, M2 provide voltage bias for Q2 pipes, and M3 provides current offset for Q2 pipes.
The beneficial effects of the invention are as follows：Output signal power is improved, while effectively inhibits amplifier because of non-linear mistake
Signal spectrum caused by true is mixed and disorderly, and circuit structure is compact, small volume, working stability, improves operating efficiency, low in energy consumption, and has
There are good anti-interference and reliability.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the phase locked looped function circuit of the present invention.
Fig. 2 is the clock driving function circuit of the present invention.
Fig. 3 is the low noise power amplification circuit of the present invention.
Fig. 4 is the Dynamic Slope Compensation Circuit of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As Fig. 1, phase locked looped function circuit are double from the Si4133 of silica company (Silicon Laboratories) production
Wave band phase-locked loop chip is core devices, and the chip provides radio frequency, intermediate frequency output, possesses 24-pin TSSOP and 28-pin QFN
Two kinds of different encapsulation, need to be the chip power supply using 3.0V dc sources.
Such as Fig. 2, the output level conversion of clock driving function circuit selection light Nano semiconductor company (ONSemi) production
Rate average delay is even lower in the ns orders of magnitude, using the teaching of the invention it is possible to provide ECL differential signals.The MC100LVEP16 clocks driving of output
Chip is core devices.ECL circuits are made up of difference pipe and emitter follower, and ECL circuits can effectively reduce clock phase shake, have
The features such as input impedance is big, and anti-common mode disturbances ability is strong, and signal detection ability is high, and driving force is strong.Due to selected clock
The output impedance for dividing configuration circuit is high resistant, is the impedance matching of holding circuit front and back end, it is necessary to carry out impedance matching to circuit.
On the other hand, clock driver chip output dc-couple level, it is only applicable to the situation of short range transmission clock signal.Therefore,
Circuit setup request driving chip and DA are as close possible to while requiring the impedance of printed circuit board copper foil and signal line impedance
Match somebody with somebody.
Such as Fig. 3, low noise power amplification circuit uses the Gali_5 of microelectronic circuit company (Mini-Circuits) production
+ type low noise amplifier is as core devices.Gali-5 types low noise amplifier is coordinating appropriate R, L, C member
Its gain of part composition peripheral circuit is up to 24dB, and corresponding noise coefficient is especially suitable for applying in thunder and lightning to be only 0.68dB
In signal simulator.Due to power amplifier, self-heating temperature is higher at work, in specific printed circuit board placement-and-routing
Shi Yaoqiu chip bottoms are contacted well with ground level in favor of radiating.The functional circuit is applied to two-stage amplifying circuit.
Such as Fig. 4, Dynamic Slope Compensation Circuit uses BiCOMS techniques, can be automatic according to defeated people, output voltage change
Change the Dynamic Slope Compensation Circuit of compensation signal slope.Amplifier A1, resistance R1, R2, R3, R4 constitute a subtracter electricity
Road.M3, MQ, M5 form current mirror, and M1, M2 provide voltage bias for Q2 pipes, and M3 provides current offset for Q2 pipes.
Claims (8)
1. a kind of VHF frequency ranges thunder and lightning signal simulator, it is characterized in that：Described VHF frequency range thunder and lightning signal simulators are by phaselocked loop
Functional circuit, clock driving function circuit, low noise power amplification circuit, Dynamic Slope Compensation Circuit design composition.
2. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：The phase locked looped function electricity
Road is core devices from the Si4133 two wavebands phase-locked loop chip of silica company (Silicon Laboratories) production.
3. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：Described clock driving work(
Can circuit selection light Nano semiconductor company (ONSemi) production output level conversion ratio average delay in the ns orders of magnitude even
Lower, using the teaching of the invention it is possible to provide ECL differential signals.
4. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：Described clock driving work(
In energy circuit, ECL circuits are made up of difference pipe and emitter follower, and ECL circuits can effectively reduce clock phase shake, have input resistance
The features such as anti-big, anti-common mode disturbances ability is strong, signal detection ability height, and driving force is strong.
5. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：The low noise acoustical power is put
Big circuit is using the Gali_5+ type low noise amplifiers of microelectronic circuit company (Mini-Circuits) production as core
Heart device.
6. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：It is described due to power amplification
Self-heating temperature is higher at work for device, requires that chip bottom contacts with ground level in specific printed circuit board placement-and-routing
Well in favor of radiating.
7. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：The dynamic slope compensation
Circuit uses BiCOMS techniques, can be changed according to input, output voltage and change the dynamic slope of compensation signal slope automatically
Compensation circuit.
8. a kind of VHF frequency ranges thunder and lightning signal simulator according to claim 1, it is characterized in that：The amplifier A1, resistance
R1, R2, R3, R4 constitute a subtraction circuit, and M3, MQ, M5 composition current mirrors, M1, M2 provide voltage bias, M3 for Q2 pipes
Current offset is provided for Q2 pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746021.7A CN107800494A (en) | 2016-08-29 | 2016-08-29 | A kind of VHF frequency ranges thunder and lightning signal simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610746021.7A CN107800494A (en) | 2016-08-29 | 2016-08-29 | A kind of VHF frequency ranges thunder and lightning signal simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107800494A true CN107800494A (en) | 2018-03-13 |
Family
ID=61527874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610746021.7A Pending CN107800494A (en) | 2016-08-29 | 2016-08-29 | A kind of VHF frequency ranges thunder and lightning signal simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107800494A (en) |
-
2016
- 2016-08-29 CN CN201610746021.7A patent/CN107800494A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180313 |