CN205961074U - Tunable formula ultra wide band burst pulse that triggers produces device - Google Patents
Tunable formula ultra wide band burst pulse that triggers produces device Download PDFInfo
- Publication number
- CN205961074U CN205961074U CN201620801589.XU CN201620801589U CN205961074U CN 205961074 U CN205961074 U CN 205961074U CN 201620801589 U CN201620801589 U CN 201620801589U CN 205961074 U CN205961074 U CN 205961074U
- Authority
- CN
- China
- Prior art keywords
- pulse
- unit
- bipolarity
- power supply
- trigger
- 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.)
- Active
Links
Abstract
The utility model discloses a tunable formula ultra wide band burst pulse that triggers produces device, the control unit control high -speed signal generation unit sends the unipolarity square wave signal, the bipolarity trigger element is the bipolarity square wave signal with unipolarity square wave signal conversion, the differentiator is bipolarity point pulse signal with bipolarity square wave signal conversion, the snowslide unit receives the excitation of bipolarity point pulse signal, produces positive polarity zeroth order gauss pulse signal, pulse shaping unit is negative polarity first -order gaussian pulse signal with positive polarity zeroth order gaussian pulse signal conversion, the edge detection unit detects half pulse width of negative polarity first -order gaussian pulse signal, the control unit receives pulse width information, and height, the low level voltage of the harmonious bipolarity trigger element of control tuner form the feedback, when control unit detect is the minimum to half pulse width, accomplish the control to the tuner.
Description
Technical field
This utility model is related to ultra broadband field of detecting, and more particularly, to a kind of tunable trigger-type ultra wideband narrow-pulse produces
Device.
Background technology
Super-broadband tech is exactly by processing to very short burst pulse, including producing, transmitting and receive etc., realizes
The function such as detect, communicate, positioning.Ultra broadband detection system relies on high, disguised strong, strong antijamming capability of its range resolution ratio etc.
Advantage, becomes the study hotspot of many applications such as GPR, through-wall imaging, Non-Destructive Testing.
In ultra broadband detection system, burst pulse source forcing transmitting antenna radiates ultra wide band electrically magnetic wave, and electromagnetic wave is in difference
Propagation, and waveform and intensity changes with the change of medium, and the electromagnetic wave running into object return is received sky
Line receives, and is detected by the analysis of echo-signal is completed with object.The width of burst pulse and amplitude determine detection system
Penetration performance and detection range.Therefore, the design of narrow-pulse generator is very crucial in ultra broadband detection system.
In the research of super-broadband tech both at home and abroad at present, the design of narrow-pulse generator mainly has two classes.First
Class is the mode based on analog device.For example, using microwave devices such as transmission lines, form pulse electrical signal through reshaping structure；
Using high-speed switching devices such as step-recovery diode, tunnel diode, avalanche transistors, transmission line principle is coordinated to produce narrow arteries and veins
Punching.Equations of The Second Kind is the mode based on digital device.For example, produce burst pulse using digital circuits such as TTL, ECL；Using with door,
The logical devices such as not gate realize extremely narrow pulse signal etc..
Considerable research report and patent application (mandate) are related to the research work of ultra wideband narrow-pulse, example both at home and abroad
As：
A kind of Ultra-wide-band pulse signal generation device (CN103731123A) based on memristor
A kind of UWB Pulse Generator (CN103326696A)
Picosecond high power ultra wideband narrow-pulse signal generator (CN202798619U) based on avalanche transistor
A kind of photoproduction ultra-wideband impulse signal devices and methods therefor (CN102694577A)
A kind of UWB Pulse Generator (CN102324951A) based on digital circuit
Despite considerable similar work, but it is possible to by the way of simulation is combined with digital hardware, using height
The tunable feature of speed digital circuit signal, designs a kind of tunable snowslide pulse triggering signal, thus giving full play to snowslide
The avalanche characteristic of transistor, the method and apparatus producing more burst pulse in a simple manner is extremely rare.
Utility model content
The purpose of this utility model is exactly to solve the above problems, and provides a kind of tunable trigger-type ultra wideband narrow-pulse
Generator, by the way of simulation is combined with digital hardware, the fastest using high-speed digital circuit trigger edge slope
Part triggering avalanche transistor, thus under identical condition, obtain narrow arteries and veins more narrower than traditional method width, that amplitude is higher
Rush signal.
To achieve these goals, this utility model adopts the following technical scheme that：
A kind of tunable trigger-type ultra wideband narrow-pulse generator, including high speed signal generating unit, described high speed letter
Number generating unit accepts the control of control unit；The outfan of high speed signal generating unit and bipolarity trigger element, differentiator,
Snowslide unit and pulse shaping unit are sequentially connected；
Described pulse shaping unit is also connected with edge detecting unit, the output of edge detecting unit and described control unit
Connect, the output of described control unit is also connected with tuner, and described tuner is connected with described bipolarity trigger element, formed
Feedback circuit；Control unit receives the pulse width detection information of edge detecting unit, is minimum when half pulse width is detected
During value, complete the control to tuner.
Described bipolarity trigger element includes pre-stage buffer, and described pre-stage buffer is passed through digital isolator and delayed with rear class
Rush device to connect, the input of described digital isolator is powered by unipolarity power supply, and outfan is powered by bipolar power supply.
Described unipolarity power supply is 3.3V power supply, and described bipolar power supply is 3.3V and -2V power supply.
Described tuner includes power supply, and described power supply provides bipolar voltage output, and a branch road of output is sequentially connected
First plus/minus musical instruments used in a Buddhist or Taoist mass, the first isolator and described bipolarity trigger element；Another branch road be sequentially connected the second plus/minus musical instruments used in a Buddhist or Taoist mass,
Second isolator and described bipolarity trigger element, described first plus/minus musical instruments used in a Buddhist or Taoist mass and the second plus/minus musical instruments used in a Buddhist or Taoist mass all control list with described
Unit connects.
Described power supply provides the bipolar voltage of -2V and+3.3V.
Described differentiator is the passive derivative network of RC, and square wave is deformed into spike signal.
Described snowslide unit includes avalanche transistor, the colelctor electrode series connection collector resistance of described avalanche transistor and current collection
Pole inductance is followed by power supply, and between base stage and emitter stage, two branch roads in parallel, a branch road connects resistance, and another branch road is gone here and there
It is associated with electric capacity and trigger signal source, another branch road connects resistance, emitter stage is grounded simultaneously.
Described pulse shaping unit includes, and the colelctor electrode of described avalanche transistor connects one end of electric capacity C2, electric capacity C2's
Parallel resistance R3 and inductance L2 between the emitter stage of the other end and described avalanche transistor.
Described edge detecting unit includes ultra broadband amplifier, and the outfan of described ultra broadband amplifier is sequentially connected sampling list
Unit, holding unit and AD conversion unit, for detecting half pulse width of negative polarity single order Gaussian pulse.
The beneficial effects of the utility model：
(1) technical scheme that this utility model is proposed, using identical avalanche transistor, impulse circuit and shaping pulse
Under conditions of circuit, using tunable trigger triggering avalanche transistor, using trigger edge slope portion the fastest
Avalanche effect is encouraged in shunt excitation, compared with general triggering mode, can reduce narrow pulse width further, increase amplitude.Typically
Burst pulse technical specification is：Repetition rate be 10MHz, amplitude peak-to-peak value 5V, half pulsewidth 400ps, main envelope frequency band be 0～
1.5GHz, peak power -8dBm@700MHz, mid frequency 750MHz.The burst pulse that this utility model is realized is fully able to meet
The requirement to signal source for the radio ultra wide band system.
(2) the utility model proposes technical scheme, using bipolar signal triggering avalanche transistor, reduce snowslide pipe
The noise jamming of Continuity signal, can obtain more clean Gaussian pulse signal in outfan.
(3) the utility model proposes technical scheme, containing feedback network, can be according to concrete application demand, by adjusting
Section tuner, is finely adjusted to impulse waveform, improves motility and the portability of technical scheme.
Brief description
Fig. 1 is the structure chart of device；
Fig. 2 is tuner architecture figure；
Fig. 3 is snowslide unit and pulse shaping unit circuit diagram；
Fig. 4 is the structure chart of bipolarity trigger element；
Fig. 5 is the structure chart of edge detecting unit.
Specific embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of tunable trigger-type ultra wideband narrow-pulse generator, including high speed signal generating unit；
Bipolarity trigger element；Tuner；Differentiator；Snowslide unit；Pulse shaping unit；Edge detecting unit and control unit.Its
Connecting control planning is：Described high speed signal generating unit accepts the control of control unit；The output of high speed signal generating unit
End is sequentially connected with bipolarity trigger element, differentiator, snowslide unit and pulse shaping unit；
Described pulse shaping unit is also connected with edge detecting unit, the output of edge detecting unit and described control unit
Connect, the output of described control unit is also connected with tuner, and described tuner is connected with described bipolarity trigger element, formed
Feedback circuit；Control unit receives detection half pulse width information of edge detecting unit, is when half pulse width is detected
During little value, complete the control to tuner.
The high speed signal generating unit that this utility model adopts is made up of fpga logic delivery outlet, for producing rising edge
The square-wave signal of 10ns.
As shown in figure 4, the bipolarity trigger element that this utility model adopts is with ADuM1210 digital isolator as core
Level shifting circuit, input signal powered by 3.3V unipolarity power supply, and output signal is supplied by 3.3V and -2V bipolar power supply
Electricity, for being converted to bipolarity square-wave signal by unipolarity square-wave signal.By pre-stage buffer, digital isolator
(ADuM1210), rear class buffer, unipolarity power supply and bipolar power supply composition.Pre-stage buffer is sent out for isolating high speed signal
Raw unit and bipolarity trigger element, improve the square-wave signal driving force of high speed signal generating unit simultaneously.Numeral isolation
Device ADuM1210 realizes level conversion, and input signal is the unipolar signal of 3.3V level, and output signal is 3.3V and -2V level
Bipolar signal.Unipolarity power supply is used for the supplying power for input end of digital isolator, and bipolar power supply is used for numeral isolation
The outfan of device is powered.
As shown in figure 3, the snowslide unit that this utility model adopts is by avalanche transistor Q1, collector resistance R2, colelctor electrode electricity
Sense L1Composition, for producing positive polarity zeroth order Gaussian pulse.When trigger is for low level, transistor is operated in cut-off region,
Power supply passes through L1、R2、C2、L2The loop of composition is to electric capacity C2Charge；When trigger rising edge arrives, transistor turns are concurrent
Raw avalanche effect, electric capacity C2Rapid electric discharge, in R3Upper generation negative polarity zeroth order Gaussian pulse.
The pulse shaping unit that this utility model adopts is by electric capacity C2, inductance L2With resistance R3Constitute, positive polarity zeroth order is high
This pulses switch is negative polarity single order Gaussian pulse, carries out impedance conversion, in order in special frequency band matched load impedance simultaneously.
As shown in Fig. 2 this utility model adopt tuner by power supply, the first plus/minus musical instruments used in a Buddhist or Taoist mass, the first isolator, second
Plus/minus musical instruments used in a Buddhist or Taoist mass, the second isolator composition.Power supply provides the bipolar voltage of -2V and+3.3V；First plus/minus musical instruments used in a Buddhist or Taoist mass and second
Plus/minus musical instruments used in a Buddhist or Taoist mass by control unit control, for being finely adjusted to supply voltage, for the base stage of the avalanche transistor of measuring
Turn-on voltage, suitably adjusts positive-negative polarity voltage, makes 50% rising edge magnitude of voltage of trigger equal with turn-on voltage,
Thus using rising edge slope partial activation avalanche transistor the fastest, at utmost playing its avalanche characteristic, reducing further
Pulse width；First isolator and the second isolator are used for isolating prime supply voltage and rear class unit, it is to avoid rear class unit pair
Tuner produces impact.
The differentiator that this utility model adopts is a passive derivative network being made up of electric capacity, resistance, for by square wave
It is deformed into spike signal, can turn off rapidly after making transistor turns, reduce the snowslide working time of transistor, it is to avoid crystal
Hangover situation in pipe infringement and burst pulse.
As shown in figure 5, the edge detecting unit that this utility model adopts is by ultra broadband amplifier, sampling unit, holding unit
Form with AD conversion unit, for detecting half pulse width of negative polarity single order Gaussian pulse.Ultra broadband amplifier is used for isolating
Pulse and rear class unit, it is to avoid edge detecting unit produces impact to pulse output, sample holding unit is by a certain percentage by half
Pulse width is transformed to weak voltage signals, and faint voltage signal is converted to digital signal by AD conversion unit, is easy to control
The data acquisition of unit processed.
A kind of tunable trigger-type ultra wideband narrow-pulse production method, control unit controls high speed signal generating unit to send
Square-wave signal；Unipolarity square-wave signal is converted to bipolarity square-wave signal by bipolarity trigger element；Differentiator will be double
Polarity square-wave signal is converted to bipolarity spike signal；Snowslide unit is encouraged by bipolarity spike signal, just produces
Polarity zeroth order Gaussian pulse signal；Positive polarity zeroth order Gaussian pulse signal is converted to negative polarity single order Gauss by pulse shaping unit
Pulse signal；Edge detecting unit detects half pulse width of negative polarity single order Gaussian pulse signal；Control unit receives pulse
Width information, controls tuner to tune the high and low level voltage of bipolarity trigger element, forms feedback；Control unit detects
When half pulse width has been minima, complete the control to tuner.
It is further elaborated in conjunction with ultra-broadband wall-through radar burst pulse source.
Demand analyses：Ultra-broadband wall-through radar is used for the Detection location to partition wall object, its positioning precision and detection model
Enclose the main pulsewidth by burst pulse source and amplitude determines, so pulse source pulsewidth is narrower, amplitude is higher, and systematic function is better.And
And, the partition wall in order to realize signal is propagated it is desirable to signal has the bandwidth more than 1GHz.
Using CycloneIII Series FPGA as control unit, drive logical output interface produce repetition rate 10MHz,
The Transistor-Transistor Logic level square-wave signal of width 20ns.Bipolarity trigger element converts the signal into bipolarity square-wave signal.Differential
The electric capacity of device and resistance value are respectively 300pF and 6k ohm, and square-wave signal is converted to spike signal.Avalanche transistor
Using BFP450, collector resistance R2, colelctor electrode inductance L1Composition snowslide impulse circuit, produces positive polarity snowslide pulse, resistance electricity
Sense value is respectively 500ohm and 30uH.Electric capacity C2, inductance L2With resistance R3Constitute pulse shaper, by positive polarity burst pulse
Be converted to negative polarity burst pulse, carry out impedance conversion simultaneously, in order in special frequency band matched load impedance, value be respectively 6pF,
10nH and 100ohm.
Edge detecting unit real-time detection half pulse width, control unit obtains width information, controls tuner to change double
The bipolar supplying voltage of pole trigger element, forms feedback.Through adjusting of certain time, final determination snowslide pipe BFP450 leads
Energising pressure is 0.745V, so tuner modulation bipolar supplying voltage is respectively -2V and+3.49V, makes the 50% of trigger
Rising edge magnitude of voltage is equal with turn-on voltage, thus using rising edge slope partial activation avalanche transistor the fastest, maximum
Degree plays its avalanche characteristic.
The characteristic obtaining burst pulse is repetition rate 10MHz, pulse amplitude peak-to-peak value 10V, half pulse width 1ns, main bag
Network frequency band is 0～1.1GHz, peak power -2dBm@330MHz, mid frequency 550MHz.Disclosure satisfy that ultra-broadband wall-through radar
The requirement of application.
Although the above-mentioned accompanying drawing that combines is described to specific embodiment of the present utility model, not new to this practicality
The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel do not need to pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (9)
1. a kind of tunable trigger-type ultra wideband narrow-pulse generator, is characterized in that, including high speed signal generating unit, described
High speed signal generating unit accepts the control of control unit；The outfan of high speed signal generating unit and bipolarity trigger element,
Differentiator, snowslide unit and pulse shaping unit are sequentially connected；
Described pulse shaping unit is also connected with edge detecting unit, and the output of edge detecting unit is with described control unit even
Connect, the output of described control unit is also connected with tuner, described tuner is connected with described bipolarity trigger element, formed anti-
It is fed back to road；Control unit receives the pulse width detection information of edge detecting unit, is minima when half pulse width is detected
When, complete the control to tuner.
2. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 1, is characterized in that, described bipolarity
Trigger element includes pre-stage buffer, and described pre-stage buffer is connected with rear class buffer by digital isolator, described numeral
The input of isolator is powered by unipolarity power supply, and outfan is powered by bipolar power supply.
3. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 2, is characterized in that, described unipolarity
Power supply is 3.3V power supply, and described bipolar power supply is 3.3V and -2V power supply.
4. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 1, is characterized in that, described tuner
Including power supply, described power supply provides bipolar voltage output, a branch road of output be sequentially connected the first plus/minus musical instruments used in a Buddhist or Taoist mass, first
Isolator and described bipolarity trigger element；Another branch road is sequentially connected the second plus/minus musical instruments used in a Buddhist or Taoist mass, the second isolator and described pair
Polarity trigger element, described first plus/minus musical instruments used in a Buddhist or Taoist mass and the second plus/minus musical instruments used in a Buddhist or Taoist mass are all connected with described control unit.
5. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 4, is characterized in that, described power supply carries
Bipolar voltage for -2V and+3.3V.
6. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 1, is characterized in that, described differentiator
For the passive derivative network of RC, square wave is deformed into spike signal.
7. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 1, is characterized in that, described snowslide list
Unit includes avalanche transistor, the colelctor electrode series connection collector resistance of described avalanche transistor and colelctor electrode inductance and is followed by power supply, base
Between pole and emitter stage, two branch roads in parallel, a branch road connects resistance, and another branch road is in series with electric capacity and triggering letter
Number source, another branch road connects resistance, and emitter stage is grounded simultaneously.
8. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 7, is characterized in that, described pulse is whole
Shape unit includes, and the colelctor electrode of described avalanche transistor connects one end of electric capacity C2, and the other end of electric capacity C2 is brilliant with described snowslide
Parallel resistance R3 and inductance L2 between the emitter stage of body pipe.
9. a kind of tunable trigger-type ultra wideband narrow-pulse generator as claimed in claim 1, is characterized in that, the inspection of described edge
Survey unit and include ultra broadband amplifier, the outfan of described ultra broadband amplifier is sequentially connected sampling unit, holding unit and modulus and turns
Change unit, for detecting half pulse width of negative polarity single order Gaussian pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620801589.XU CN205961074U (en) | 2016-07-27 | 2016-07-27 | Tunable formula ultra wide band burst pulse that triggers produces device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620801589.XU CN205961074U (en) | 2016-07-27 | 2016-07-27 | Tunable formula ultra wide band burst pulse that triggers produces device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205961074U true CN205961074U (en) | 2017-02-15 |
Family
ID=57972404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620801589.XU Active CN205961074U (en) | 2016-07-27 | 2016-07-27 | Tunable formula ultra wide band burst pulse that triggers produces device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205961074U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130510A (en) * | 2016-07-27 | 2016-11-16 | 山东省科学院自动化研究所 | A kind of tunable trigger-type ultra wideband narrow-pulse generator and method |
| CN114157319A (en) * | 2021-11-04 | 2022-03-08 | 深圳越为科技有限公司 | Novel ultra-wideband sensing signal receiving and transmitting integrated system |
| US11309871B2 (en) | 2018-06-11 | 2022-04-19 | Nantong Institute of Nanjing University of Posts and Telecommunications Co., Ltd. | Narrow pulse generation circuit used in sequential equivalent sampling system |
-
2016
- 2016-07-27 CN CN201620801589.XU patent/CN205961074U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130510A (en) * | 2016-07-27 | 2016-11-16 | 山东省科学院自动化研究所 | A kind of tunable trigger-type ultra wideband narrow-pulse generator and method |
| CN106130510B (en) * | 2016-07-27 | 2023-04-07 | 山东省科学院自动化研究所 | Tunable trigger type ultra-wideband narrow pulse generation device and method |
| US11309871B2 (en) | 2018-06-11 | 2022-04-19 | Nantong Institute of Nanjing University of Posts and Telecommunications Co., Ltd. | Narrow pulse generation circuit used in sequential equivalent sampling system |
| CN114157319A (en) * | 2021-11-04 | 2022-03-08 | 深圳越为科技有限公司 | Novel ultra-wideband sensing signal receiving and transmitting integrated system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102121983B (en) | Ultra-wideband radar pulse transmitter and method | |
| CN104104362B (en) | High-amplitude picosecond balance pulse signal generator | |
| CN103929154B (en) | Picosecond monocycle impulse transmitter | |
| CN103731123B (en) | A kind of ultra-wideband impulse signal generation device based on memristor | |
| CN205961074U (en) | Tunable formula ultra wide band burst pulse that triggers produces device | |
| CN103227624B (en) | Second-order differential Gaussian pulse generator based on SRD | |
| CN103326696B (en) | A kind of UWB Pulse Generator | |
| Zhu et al. | An implementation of step recovery diode-based UWB pulse generator | |
| CN107241085B (en) | Large-amplitude high-repetition-frequency nanosecond balanced pulse signal generator | |
| CN203661015U (en) | An ultra wide band pulse signal generation apparatus based on a memristor | |
| CN106199535B (en) | It is a kind of to switch the method and device for generating high-voltage pulse radar signal based on photoinduction | |
| CN203278774U (en) | SRD-based second-order differential Gaussian pulse generator | |
| CN104765027A (en) | High-frequency ultrasonic coding excitation emission system and pulse generating method | |
| CN106130510A (en) | A kind of tunable trigger-type ultra wideband narrow-pulse generator and method | |
| CN105680828A (en) | Avalanche transistor based ultra wideband pulse generation circuit | |
| CN103929089A (en) | Rapid leading edge step pulse generator | |
| Li et al. | An ultra-wideband monocycle pulse generator with good performance | |
| CN110391799A (en) | A kind of picosecond pulse generating unit | |
| CN206743204U (en) | Sub- cycle microwave pulse sequence generating device for the manipulation of cold atom quantum state | |
| CN103590810A (en) | Power-adjustable emitting device used for transient electromagnetic logging | |
| CN112526459A (en) | Ultra-wideband radar sampling receiver based on MESFET | |
| Cai et al. | Design of low-cost ground penetrating radar receiving circuit based on equivalent sampling | |
| CN106953619B (en) | Sub-periodic microwave pulse sequence generating device for cold atomic quantum state control | |
| Xia et al. | A monocycle pulse generator with variable capacitance diodes for radar target detecting application | |
| CN206790461U (en) | Significantly Gao Zhongying nanosecond equalizing pulse signal generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |