CN107241085A - Significantly Gao Zhongying nanosecond equalizing pulse signal generator - Google Patents
Significantly Gao Zhongying nanosecond equalizing pulse signal generator Download PDFInfo
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- CN107241085A CN107241085A CN201710418993.8A CN201710418993A CN107241085A CN 107241085 A CN107241085 A CN 107241085A CN 201710418993 A CN201710418993 A CN 201710418993A CN 107241085 A CN107241085 A CN 107241085A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/57—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/282—Transmitters
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- Radar Systems Or Details Thereof (AREA)
- Dc Digital Transmission (AREA)
Abstract
The present invention provides a kind of significantly Gao Zhongying nanosecond equalizing pulse signal generator, including：Unipolar pulse signal generating circuit, includes the triode pulse-generating circuit of two-stage string and the triode for the possessing avalanche effect composition of cascaded design, and significantly Gao Zhongying nanosecond negative pulse signal is produced for the bipolarity start pulse signal triggering by inputting；Equalizing pulse generation circuit, its front end is electrically connected to unipolar pulse signal generating circuit, for the significantly Gao Zhongying nanosecond negative pulse signal to be converted into equalizing pulse signal, produces significantly nanosecond equalizing pulse signal.Advantage is：Modern design, circuit structure is simple, and the nanosecond equalizing pulse signal waveform symmetry of generation is good, ring level is low, amplitude is big, repetition is high, can be applied in impulse type ultra wideband radar system, it is ensured that larger detection range and good detection performance.
Description
Technical field
The invention belongs to electronics industry technical field of electronic components, and in particular to a kind of significantly Gao Zhongying nanosecond balances
Pulse signal generator.
Background technology
Super-broadband tech uses the impulse of nanosecond or picosecond as carrier transmission information, with bandwidth height, work(
The advantages of low, anti-multipath fading ability is strong, concealment is good is consumed, radio communication, ULTRA-WIDEBAND RADAR system can be widely used in
The fields such as system detection, positioning and tracking.In order to realize that relatively large distance is detected, it is desirable to which the pulse signal of transmitting has larger instantaneous
Power, that is, require that impulse amplitude is larger, while in order to meet ultrabroad band detection demand, it is necessary to pulse width is narrow, repetition is high, because
This, the narrow pulse signal for how producing significantly Gao Zhongying is the key technology of ultra wideband radar system design.
In the prior art, using conventional cmos devices design generation pulse signal, this output of pulse signal method has
Following deficiency：Its output pulse amplitude is relatively low, and output pulse signal repetition rate is also limited generally not high by device, therefore, difficult
To meet the actual detection application demand of ultra wideband radar system.
The content of the invention
In order to break through the performance restriction that general pulse produces signal, the present invention, which is provided, to be balanced a kind of significantly Gao Zhongying nanosecond
Pulse signal generator, can effectively solve the above problems.
The technical solution adopted by the present invention is as follows：
The present invention provides a kind of significantly Gao Zhongying nanosecond equalizing pulse signal generator, including：
Unipolar pulse signal generating circuit, including two-stage string and the triode for the possessing avalanche effect composition of cascaded design
Triode pulse-generating circuit, for by input bipolarity start pulse signal triggering produce significantly bear Gao Zhongying nanosecond
Polarity pulse signal；
Equalizing pulse generation circuit, its front end is electrically connected to unipolar pulse signal generating circuit, for will be described big
Amplitude Gao Zhongying nanosecond, negative pulse signal was converted to equalizing pulse signal, produced significantly Gao Zhongying nanosecond equalizing pulse
Signal.
It is preferred that, in addition to：
Single-ended start pulse signal generation circuit, for producing positive polarity start pulse signal；
Bipolarity start pulse signal generation circuit, its front end is electrically connected to single-ended start pulse signal generation circuit,
For carrying out shaping and processing to the positive polarity start pulse signal, the bipolarity start pulse signal is produced；It is described double
The rear end of polarity start pulse signal generation circuit is connected with the unipolar pulse signal generating circuit, for the monopole
Property pulse signal generating circuit input bipolarity start pulse signal.
It is preferred that, the single-ended start pulse signal generation circuit is square-wave pulse signal generator.
It is preferred that, the bipolarity start pulse signal generation circuit is transformer-coupled circuit, including：First transformer
(T1), the first coupled capacitor (C1) and first resistor (R1)；
Wherein, first transformer (T1), the Same Name of Ends of its primary coil passes sequentially through the first coupled capacitor of series connection
(C1) and after first resistor (R1), it is connected to the output end of the single-ended start pulse signal generation circuit；First resistor (R1)
The positive polarity start pulse signal produced with the first coupled capacitor (C1) to the single-ended start pulse signal generation circuit is carried out
After current limliting differential shaping conversion, burst pulse trigger signal is produced；First transformer (T1) enters the burst pulse trigger signal
Row coupling conversion, the secondary coil of first transformer (T1) exports the bipolarity start pulse signal；Wherein, secondary wire
The Same Name of Ends output cathode start pulse signal of circle；The non-same polarity output negative pole start pulse signal of secondary coil.
It is preferred that, the unipolar pulse signal generating circuit includes：First triode (Q1), the second triode (Q2),
3rd triode (Q3), the 4th triode (Q4), the second coupled capacitor (C2), the 3rd coupled capacitor (C3), the 4th coupled capacitor
(C4), the 5th coupled capacitor (C5), the 6th coupled capacitor (C6), the 7th coupled capacitor (C7), second resistance (R2), 3rd resistor
(R3), the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6), the 7th resistance (R7), the 8th resistance (R8), the 9th electricity
Hinder (R9), the tenth resistance (R10), the 11st resistance (R11) and the 12nd resistance (R12)；
Wherein, the first triode (Q1), its base stage is connected to the Same Name of Ends of the first transformer (T1) secondary coil；It is launched
Pole is connected to the non-same polarity of the first transformer (T1) secondary coil, and is connected to the ground by the 5th resistance (R5)；Its colelctor electrode
The second triode (Q2) emitter stage is connected to by the 4th resistance (R4), and is connected to the ground by the 5th coupled capacitor (C5)；
Second triode (Q2), its colelctor electrode is connected to high voltage supply voltage (HV), and passes through the 4th coupled capacitor (C4)
It is connected to the ground；Its base stage is connected to high voltage supply voltage (HV) by second resistance (R2), and is connected by 3rd resistor (R3)
To ground；
Second coupled capacitor (C2), its first end is connected to the first triode (Q1) emitter stage, and its second end is connected to
The first end of 6th resistance (R6)；Second end of the 6th resistance (R6) is connected to the first end of the 7th resistance (R7), the 7th resistance
(R7) the second end is connected to the ground；On the circuit of the 6th resistance (R6) to the 7th resistance (R7), draw one bar of line and be connected to the
The first end of eight resistance (R8)；Wherein, the end of the second coupled capacitor (C2) second is used as the of unipolar pulse signal generating circuit
The positive pulse output end of one-level cascade circuit；
3rd triode (Q3), its base stage is connected to the second end of the 8th resistance (R8)；Its emitter stage is connected to the ground；It collects
Electrode is connected to the emitter stage of the 4th triode (Q4) by the 11st resistance (R11), and by the 7th coupled capacitor (C7) even
It is connected to ground；
4th triode (Q4), its colelctor electrode is connected to high voltage supply voltage (HV)；Its base stage passes through the 9th resistance (R9)
High voltage supply voltage (HV) is connected to, and passes through the tenth resistance (R10) and the 6th coupled capacitor (C6) earth；
3rd coupled capacitor (C3), its first end is connected to the collection of the 3rd triode (Q3) by the 12nd resistance (R12)
Electrode, the second end of the 3rd coupled capacitor (C3) as the significantly Gao Zhongying nanosecond equalizing pulse signal generator unipolarity
The nanosecond negative pulse output end of pulse signal generating circuit.
It is preferred that, the equalizing pulse generation circuit includes：Second transformer (T2), the 13rd resistance (R13) and the tenth
Four resistance (R14)；
Wherein, the second transformer (T2), the Same Name of Ends of its primary coil is connected to the significantly Gao Zhongying nanosecond parallel vein
The nanosecond negative pulse output end of the unipolar pulse signal generating circuit of signal generator is rushed, non-same polarity is connected to the ground；Secondly
The Same Name of Ends of level coil is connected to the first end of the 13rd resistance (R13), and the non-same polarity of its secondary coil is connected to the 14th
The first end of resistance (R14), the centre tap of its secondary coil is connected to the ground；Wherein, the end of the 13rd resistance (R13) second
It is used as the negative pulse output end of significantly Gao Zhongying nanosecond equalizing pulse signal generator；14th resistance (R14) second
Hold the positive pulse output end as significantly Gao Zhongying nanosecond equalizing pulse signal generator.
The significantly Gao Zhongying nanosecond equalizing pulse signal generation apparatus that the present invention is provided have the advantage that：
(1) by the use of two-stage string and the triode for possessing avalanche effect of cascaded design is used as a base unit circuit structure
Pulse signal generation circuit is built, compared with the pulse-generating circuit that the triode that monopole possesses avalanche effect is constituted, this is significantly
The pulse amplitude that Gao Zhongying nanosecond equalizing pulse signal generator is produced is big, and pulse front edge is precipitous, and circuit reliability is high；
(2) in equalizing pulse generation circuit, designed, single pulse signal can be converted to synchronous defeated using wide-band transformer
The equalizing pulse gone out, it is to avoid the output amplitude of equalizing pulse, phase difference, and effectively suppress by series matching resistor to drag
Tail, absorption vibration；
(3) advantage such as avalanche characteristic of comprehensive utilization triode, by the supply voltage, the triode level that adjust high voltage power supply
The series of connection and the size of charge and discharge capacitance, can adjust amplitude, pulse width and the repetition of output pulse, produce different
The pulse signal of demand.
The significantly Gao Zhongying nanosecond equalizing pulse signal generator that the present invention is provided, novel in design, circuit structure is simple,
The nanosecond equalizing pulse signal waveform symmetry of generation is good, ring level is low, amplitude is big, repetition is high, hangover vibration is small, can answer
For in impulse type ultra wideband radar system, improving detection quality, ensuring larger detection range.
Brief description of the drawings
The schematic diagram for the significantly Gao Zhongying nanosecond equalizing pulse signal generator that Fig. 1 provides for the present invention；
The circuit diagram for the significantly Gao Zhongying nanosecond equalizing pulse signal generator that Fig. 2 provides for the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.The implementation for not illustrating or describing in accompanying drawing, is common in art
Form known to technical staff.In addition, though herein the demonstration of the parameter comprising particular value can be provided, it is to be understood that parameter without
Corresponding value need to be definitely equal to, but corresponding value can be similar in acceptable error margin or design constraint.Embodiment
In the direction term mentioned, be only the direction of refer to the attached drawing such as " on ", " under ", "front", "rear", "left", "right".Therefore,
The direction term used is intended to be illustrative and not intended to limit protection scope of the present invention.
Significantly pulse signal can be obtained using the avalanche effect of triode, and cascade form can improve output arteries and veins
Signal amplitude is rushed, based on this, the present invention obtains significantly Gao Zhongying nanosecond using the triode cascade circuit for possessing avalanche effect
Level pulse signal, to overcome existing pulse-generating circuit complicated, the awkward situation that voltage amplitude can not be taken into account simultaneously with repetition,
The present invention can be widely used in the practical engineering application of the systems such as GPR, life detection radar.
Sent out in one exemplary embodiment of the present invention there is provided a kind of significantly Gao Zhongying nanosecond equalizing pulse signal
Raw device.Fig. 1 is the structural representation according to significantly Gao Zhongying nanosecond equalizing pulse signal generator of the embodiment of the present invention.
Fig. 1 is refer to, the significantly Gao Zhongying nanosecond equalizing pulse signal generator that the present embodiment is provided includes：
Single-ended start pulse signal generation circuit, for producing positive polarity start pulse signal；
Bipolarity start pulse signal generation circuit, its front end is electrically connected to single-ended start pulse signal generation circuit,
For carrying out shaping and reversal processing to positive polarity start pulse signal, bipolarity start pulse signal is produced；
Unipolar pulse signal generating circuit：The triode group for possessing avalanche effect including two-stage string and cascaded design
Into triode pulse-generating circuit, its front end is electrically connected to bipolarity start pulse signal generation circuit, for bipolar
Property the excitation of start pulse signal generation circuit is lower produces significantly Gao Zhongying nanosecond negative pulse signal；
Equalizing pulse generation circuit, its front end is electrically connected to unipolar pulse signal generating circuit, for will significantly
Gao Zhongying nanosecond, negative pulse signal was converted to equalizing pulse signal, and significantly the equalizing pulse of Gao Zhongying nanosecond is believed for generation
Number.
Fig. 2 is the circuit diagram of embodiment illustrated in fig. 1 significantly Gao Zhongying nanosecond equalizing pulse signal generator.Below in conjunction with
Fig. 2, respectively to the present embodiment significantly Gao Zhongying nanosecond equalizing pulse signal generator each part carry out specifically
It is bright.
1st, single-ended start pulse signal generation circuit
In the present embodiment, single-ended start pulse signal generation circuit is a pulse signal generator, and it is 5V that it, which produces amplitude,
Pulse width is 100ns, and signal repetition rate is 200kHz positive pulse signal.
The present invention is not limited thereto, and the amplitude of the start pulse signal can be between 5V~10V, and pulse width can
So that between 30ns~500ns, signal repetition rate can be between 10KHz~500KHz.
In addition, the single-ended start pulse signal generation circuit can also not included in the present invention, and directly by external world's input
The start pulse signal of above-mentioned condition is met, the present invention can be equally realized.
2nd, bipolarity start pulse signal generation circuit
Fig. 2 is refer to, bipolarity start pulse signal generation circuit is transformer-coupled circuit, including：First transformer
T1, the first coupled capacitor C1 and first resistor R1；
Wherein, the first transformer T1, the Same Name of Ends of its primary coil passes sequentially through the first coupled capacitor C1 and of series connection
After one resistance R1, the output end of single-ended start pulse signal generation circuit is connected to；First resistor R1 and the first coupled capacitor C1
The positive polarity start pulse signal that single-ended start pulse signal generation circuit is produced is carried out after current limliting differential shaping conversion, produced
Burst pulse trigger signal；The burst pulse trigger signal is carried out coupling conversion, the first transformer T1 secondary by the first transformer T1
Coil exports bipolarity start pulse signal；Wherein, the Same Name of Ends output cathode start pulse signal of secondary coil；Secondary wire
The non-same polarity output negative pole start pulse signal of circle.
In the bipolarity start pulse signal generation circuit, the first resistor that positive polarity start pulse signal passes through series connection
After R1, the first coupled capacitor C1 current limliting differential shaping conversion, burst pulse trigger signal is produced, the first transformer T1 is by the burst pulse
Trigger signal coupling conversion, secondary in the first transformer T1 produces Narrow Bipolar trigger signal.
The present invention is not limited thereto, and bipolarity start pulse signal generation circuit can also be penetrated directly by NPN, positive-negative-positive
Frequency transistor switching circuit is substituted, and produces that edge is fast, opposite in phase a pair of bipolaritys by the switching characteristic of radio frequency triode
Start pulse signal, while being supplied to the first triode Q1 base stage and emitter stage.
Bipolarity start pulse signal generation circuit output start pulse signal potential difference can between 2V~12V it
Between, pulse width can be between 5ns~500ns, and pulse recurrence frequency can be between 10KHz~500KHz.
In addition, the bipolarity start pulse signal generation circuit can also not included in the present invention, and it is directly defeated by the external world
Enter a bipolarity start pulse signal for meeting above-mentioned condition, can equally realize the present invention.
3rd, unipolar pulse signal generating circuit
Fig. 2 is refer to, unipolar pulse signal generating circuit includes：First triode Q1, the second triode Q2, the three or three
Pole pipe Q3, the 4th triode Q4, the second coupled capacitor C2, the 3rd coupled capacitor C3, the 4th coupled capacitor C4, the 5th coupled capacitor
C5, the 6th coupled capacitor C6, the 7th coupled capacitor C7, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5,
6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11 and the 12nd
Resistance R12；
Wherein, the first triode Q1, its base stage is connected to the Same Name of Ends of the first transformer T1 secondary coils；Its emitter stage connects
The non-same polarity of the first transformer T1 secondary coils is connected to, and is connected to the ground by the 5th resistance R5；Its colelctor electrode passes through the 4th
Resistance R4 is connected to the second triode Q2 emitter stage, and is connected to the ground by the 5th coupled capacitor C5；
Second triode Q2, its colelctor electrode is connected to high voltage supply voltage HV, and is connected to by the 4th coupled capacitor C4
Ground；Its base stage is connected to high voltage supply voltage HV by second resistance R2, and is connected to the ground by 3rd resistor R3；
Second coupled capacitor C2, its first end is connected to the first triode Q1 emitter stage, and its second end is connected to the 6th
Resistance R6 first end；6th resistance R6 the second end is connected to the 7th resistance R7 first end, the 7th resistance R7 the second end
It is connected to the ground；On the 6th resistance R6 to the 7th resistance R7 circuit, the first end that one bar of line is connected to the 8th resistance R8 is drawn；
Wherein, second the second ends of coupled capacitor C2 are defeated as the positive pulse of the first order cascade circuit of unipolar pulse signal generating circuit
Go out end；
3rd triode Q3, its base stage is connected to the 8th resistance R8 the second end；Its emitter stage is connected to the ground；Its colelctor electrode
The 4th triode Q4 emitter stage is connected to by the 11st resistance R11, and is connected to ground by the 7th coupled capacitor C7；
4th triode Q4, its colelctor electrode is connected to high voltage supply voltage HV；Its base stage is connected to by the 9th resistance R9
High voltage supply voltage HV, and pass through the tenth resistance R10 and the 6th coupled capacitor C6 earths；
3rd coupled capacitor C3, its first end is connected to the 3rd triode Q3 colelctor electrode by the 12nd resistance R12, the
Three coupled capacitor C3 the second end as the significantly Gao Zhongying nanosecond equalizing pulse signal generator unipolar pulse signal
The nanosecond negative pulse output end of generation circuit.
In the unipolar pulse signal generating circuit, the first triode Q1, the second triode Q2 connected up and down is bipolar
Property start pulse signal in the presence of fast conducting, produce avalanche breakdown effect, the passed through in the first triode Q1 emitter stage
Two coupled capacitor C2, coupling output cathode is fast along pulse signal；Three poles with avalanche effect of series connection under on the first level
Under the excitation of pipe cascade circuit output signal, the 3rd triode Q3 of series connection, the 4th triode Q4 are quickly led therewith above and below the second level
It is logical, produce avalanche breakdown effect, the 3rd triode Q3 colelctor electrode by the 3rd coupled capacitor C3, output negative pole is fast along height
Pressure pulse signal.
First triode Q1 emitter stage produces positive pulse signal, and the 3rd triode Q3 colelctor electrode produces negative polarity
Nanosecond pulse signal.The pulse front edge of the Nanosecond pulse signal mainly determines that pulse is wide by the snowslide ON time of triode
Degree is mainly determined by the second coupled capacitor C2, the 3rd coupled capacitor C3, the 6th resistance R6 and the 7th resistance R7 size.High pressure is supplied
Piezoelectric voltage HV is according to the pressure-resistant selected of the triode of selection.
4th, equalizing pulse generation circuit
Fig. 2 is refer to, equalizing pulse generation circuit includes：Second transformer T2, the 13rd resistance R13 and the 14th resistance
R14；
Wherein, the second transformer T2, the Same Name of Ends of its primary coil is connected to the significantly Gao Zhongying nanosecond equalizing pulse
The nanosecond negative pulse output end of the unipolar pulse signal generating circuit of signal generator, non-same polarity is connected to the ground；It is secondary
The Same Name of Ends of coil is connected to the 13rd resistance R13 first end, and the non-same polarity of its secondary coil is connected to the 14th resistance
R14 first end, the centre tap of its secondary coil is connected to the ground；Wherein, the 13rd the second ends of resistance R13 are as significantly high
The negative pulse output end of repetition nanosecond equalizing pulse signal generator；14th the second ends of resistance R14 are used as significantly Gao Zhongying
The positive pulse output end of nanosecond equalizing pulse signal generator.
In the equalizing pulse generation circuit, wide-band transformer carries out shaping conversion to the pulse signal of generation, seals in matching
Resistance effectively suppresses overshoot, absorbs vibration, obtains the good balance Gaussian pulse signal of small, waveform that trails.
The significantly method of work of Gao Zhongying nanosecond equalizing pulse signal generator, it changes high voltage supply voltage, second
Coupled capacitor C2, the 3rd coupled capacitor C3, the 6th resistance R6 and the 7th resistance R7 size, and cascade triode quantity,
The width and amplitude of output pulse can be adjusted, pulse adjustability is realized.
The course of work of significantly Gao Zhongying nanosecond equalizing pulse signal generator is described below：
Step 1: when start pulse signal is in low level state, the first transformer T1 secondary coil output signals are
Low level, the first triode Q1, the second triode Q2, the 3rd triode Q3, the 4th triode Q4 are in cut-off state；
Step 2: when start pulse signal be in high level when, the first transformer T1 secondary coils Same Name of Ends with it is non-of the same name
Potential difference is coupled out between end for positive Narrow Bipolar trigger signal, the first quick triggering and conductings of triode Q1, the two or three
Pole pipe Q2 overvoltage avalanche breakdowns, the fast positive pulse signal in a forward position is produced in its emitter stage；
Step 3: after the positive pulse signal that the first triode Q1, the second triode Q2 are exported arrives, similarly, the
The three quick triggering and conductings of triode Q3, the 4th triode Q4 produces over-pressed avalanche breakdown effect, avalanche current is formed, the three or three
Pole pipe Q3 colelctor electrode formation negative polarity Nanosecond pulse signal, is coupled by the 3rd coupled capacitor C3 and exported；
Step 4: the negative polarity Nanosecond pulse signal passes through shaping, reversal, the impedance of equalizing pulse generation circuit
After matching somebody with somebody, the less significantly Gao Zhongying balance Nanosecond pulse signal of hangover is produced.
Step 5: selection suitable the first triode Q1, the second triode Q2, the 3rd triode with avalanche effect
Q3, the 4th triode Q4, according to the pressure-resistant of triode, select suitable high voltage supply HV, the second coupled capacitor C2 of regulation, the 3rd
Coupled capacitor C3, the 6th resistance R6 and the 7th resistance R7 value size, can adjust the significantly nanosecond equalizing pulse of output
The pulse width and voltage amplitude of signal.High voltage supply HV is bigger, then pulse width is bigger；Second coupled capacitor C2, the 3rd coupling
Conjunction electric capacity C3 values are bigger, then pulse width is bigger, and voltage amplitude is also bigger.Those skilled in the art can be according to choosing three poles
The model of pipe chooses suitable resistance.Second coupled capacitor C2 value is 100pf~1nf, the 3rd coupled capacitor C3 value
For 30pf~100pf, the 6th resistance R6 value is the Ω of 100 Ω~500, and the 7th resistance R7 resistance takes the Ω of 10 Ω~100.The
Four coupled capacitor C4 and the 6th coupled capacitor C6 electric capacity is equal, takes 100pF~500pF.Transformer T2 selection and generation
The wide-band transformer of pulse signal bandwidth match.13rd resistance R13 and the 14th resistance R14 resistance value adjusting ring water
It is flat, between 10~20 ohm.
Actual test shows, the significantly Gao Zhongying nanosecond equalizing pulse signal that the present embodiment is produced, pulse recurrence frequency
10KHz~500KHz is adjustable, and forward position is precipitous, after along partially delay, forward position be 1~2ns, pulse width be 5~15ns, output voltage width
Spend for ± 20V~± 50V, output positive-negative polarity waveform symmetry is good, trail small, be adapted to the application of radio ultra wide band system.
So far, the present embodiment is described in detail combined accompanying drawing.According to above description, those skilled in the art
There should be clear understanding to significantly Gao Zhongying nanosecond equalizing pulse signal generator of the invention.
In addition, the above-mentioned definition to each element and method is not limited in various concrete structures, the shape mentioned in embodiment
Shape or mode, those of ordinary skill in the art simply can be changed or be replaced to it, for example：
(1) in the present embodiment, start pulse signal generation circuit can also be produced by fpga chip, be easy to the system integration；
(2) bipolarity start pulse signal generation circuit can also be directly by NPN, positive-negative-positive radio frequency transistor switching circuit
Substitute, produce that forward position is fast, opposite in phase a pair of bipolarity start pulse signals by the switching characteristic of radio frequency triode, simultaneously
It is supplied to the first triode Q1 base stage and emitter stage；
(3) in the present embodiment, the first triode Q1, the second triode Q2, the 3rd triode Q3, the 4th triode Q4 are
Possess the triode of avalanche effect, can directly select avalanche transistor；
(4) according to produce signal bandwidth requirement, select bandwidth match wide-band transformer, or selection magnetic core voluntarily around
System.
In summary, the present invention makes full use of the avalanche breakdown of triode using the triode device for possessing avalanche effect
Characteristic, with reference to its advantage, devises repetition, amplitude, forward position, the adjustable significantly nanosecond equalizing pulse signal generator of bottom width.
The size of the parameters such as supply voltage, the type selecting of triode, the series of triode cascade and electric capacity by adjusting high voltage power supply
Regulation, can adjust the characterisitic parameters such as the amplitude and pulse width of the pulse of output, produce the equalizing pulse signal of different bandwidth,
So as to the application of the impulse type ultra wideband radar system suitable for different frequency bands.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (6)
1. a kind of significantly Gao Zhongying nanosecond equalizing pulse signal generator, it is characterised in that including：
Unipolar pulse signal generating circuit, including two-stage string and cascaded design the triode for possessing avalanche effect composition three
Pole pipe pulse-generating circuit, significantly Gao Zhongying nanosecond negative polarity is produced for the bipolarity start pulse signal triggering by inputting
Pulse signal；
Equalizing pulse generation circuit, its front end is electrically connected to unipolar pulse signal generating circuit, for will described in significantly
Gao Zhongying nanosecond, negative pulse signal was converted to equalizing pulse signal, and significantly the equalizing pulse of Gao Zhongying nanosecond is believed for generation
Number.
2. significantly Gao Zhongying nanosecond equalizing pulse signal generator according to claim 1, it is characterised in that also wrap
Include：
Single-ended start pulse signal generation circuit, for producing positive polarity start pulse signal；
Bipolarity start pulse signal generation circuit, its front end is electrically connected to single-ended start pulse signal generation circuit, is used for
Shaping and processing are carried out to the positive polarity start pulse signal, the bipolarity start pulse signal is produced；The bipolarity
The rear end of start pulse signal generation circuit is connected with the unipolar pulse signal generating circuit, for the unipolarity arteries and veins
Rush signal generating circuit input bipolarity start pulse signal.
3. significantly Gao Zhongying nanosecond equalizing pulse signal generator according to claim 2, it is characterised in that the list
It is square-wave pulse signal generator to hold start pulse signal generation circuit.
4. significantly Gao Zhongying nanosecond equalizing pulse signal generator according to claim 2, it is characterised in that described double
Polarity start pulse signal generation circuit is transformer-coupled circuit, including：First transformer (T1), the first coupled capacitor (C1)
With first resistor (R1)；
Wherein, first transformer (T1), the Same Name of Ends of its primary coil passes sequentially through the first coupled capacitor (C1) of series connection
After first resistor (R1), the output end of the single-ended start pulse signal generation circuit is connected to；First resistor (R1) and
The positive polarity start pulse signal that one coupled capacitor (C1) is produced to the single-ended start pulse signal generation circuit carries out current limliting
After differential shaping conversion, burst pulse trigger signal is produced；The burst pulse trigger signal is carried out coupling by first transformer (T1)
Conversion is closed, the secondary coil of first transformer (T1) exports the bipolarity start pulse signal；Wherein, secondary coil
Same Name of Ends output cathode start pulse signal；The non-same polarity output negative pole start pulse signal of secondary coil.
5. significantly Gao Zhongying nanosecond equalizing pulse signal generator according to claim 4, it is characterised in that the list
Polarity pulse signal generation circuit includes：First triode (Q1), the second triode (Q2), the 3rd triode (Q3), the four or three
Pole pipe (Q4), the second coupled capacitor (C2), the 3rd coupled capacitor (C3), the 4th coupled capacitor (C4), the 5th coupled capacitor (C5),
6th coupled capacitor (C6), the 7th coupled capacitor (C7), second resistance (R2), 3rd resistor (R3), the 4th resistance (R4), the 5th
Resistance (R5), the 6th resistance (R6), the 7th resistance (R7), the 8th resistance (R8), the 9th resistance (R9), the tenth resistance (R10),
11 resistance (R11) and the 12nd resistance (R12)；
Wherein, the first triode (Q1), its base stage is connected to the Same Name of Ends of the first transformer (T1) secondary coil；Its emitter stage connects
The non-same polarity of the first transformer (T1) secondary coil is connected to, and is connected to the ground by the 5th resistance (R5)；Its colelctor electrode passes through
4th resistance (R4) is connected to the second triode (Q2) emitter stage, and is connected to the ground by the 5th coupled capacitor (C5)；
Second triode (Q2), its colelctor electrode is connected to high voltage supply voltage (HV), and is connected by the 4th coupled capacitor (C4)
To ground；Its base stage is connected to high voltage supply voltage (HV) by second resistance (R2), and is connected to the ground by 3rd resistor (R3)；
Second coupled capacitor (C2), its first end is connected to the first triode (Q1) emitter stage, and its second end is connected to the 6th
The first end of resistance (R6)；Second end of the 6th resistance (R6) is connected to the first end of the 7th resistance (R7), the 7th resistance (R7)
The second end be connected to the ground；On the circuit of the 6th resistance (R6) to the 7th resistance (R7), draw one bar of line and be connected to the 8th electricity
Hinder the first end of (R8)；Wherein, the end of the second coupled capacitor (C2) second as unipolar pulse signal generating circuit the first order
The positive pulse output end of cascade circuit；
3rd triode (Q3), its base stage is connected to the second end of the 8th resistance (R8)；Its emitter stage is connected to the ground；Its colelctor electrode
The emitter stage of the 4th triode (Q4) is connected to by the 11st resistance (R11), and is connected to by the 7th coupled capacitor (C7)
Ground；
4th triode (Q4), its colelctor electrode is connected to high voltage supply voltage (HV)；Its base stage is connected by the 9th resistance (R9)
To high pressure supply voltage (HV), and pass through the tenth resistance (R10) and the 6th coupled capacitor (C6) earth；
3rd coupled capacitor (C3), its first end is connected to the colelctor electrode of the 3rd triode (Q3) by the 12nd resistance (R12),
Second end of the 3rd coupled capacitor (C3) as the significantly Gao Zhongying nanosecond equalizing pulse signal generator unipolar pulse
The nanosecond negative pulse output end of signal generating circuit.
6. significantly Gao Zhongying nanosecond equalizing pulse signal generator according to claim 5, it is characterised in that described flat
Weighing apparatus pulse-generating circuit includes：Second transformer (T2), the 13rd resistance (R13) and the 14th resistance (R14)；
Wherein, the second transformer (T2), the Same Name of Ends of its primary coil is connected to the significantly Gao Zhongying nanosecond equalizing pulse letter
The nanosecond negative pulse output end of the unipolar pulse signal generating circuit of number generator, non-same polarity is connected to the ground；Its secondary wire
The Same Name of Ends of circle is connected to the first end of the 13rd resistance (R13), and the non-same polarity of its secondary coil is connected to the 14th resistance
(R14) first end, the centre tap of its secondary coil is connected to the ground；Wherein, the end conduct of the 13rd resistance (R13) second
The significantly negative pulse output end of Gao Zhongying nanosecond equalizing pulse signal generator；Make at the end of 14th resistance (R14) second
For the positive pulse output end of significantly Gao Zhongying nanosecond equalizing pulse signal generator.
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| CN108712162A (en) * | 2018-04-27 | 2018-10-26 | 湖北大学 | A kind of avalanche transistor connection in series-parallel high pressure is soon along switching circuit |
| CN112152592A (en) * | 2020-09-23 | 2020-12-29 | 西安交通大学 | High repetition frequency fast pulse generating circuit based on magnetic bead isolation |
| CN112865759A (en) * | 2021-01-19 | 2021-05-28 | 中国电子科技集团公司第二十九研究所 | Time domain high-stability ultra-wide spectrum pulse source |
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| CN112865759A (en) * | 2021-01-19 | 2021-05-28 | 中国电子科技集团公司第二十九研究所 | Time domain high-stability ultra-wide spectrum pulse source |
| CN112865759B (en) * | 2021-01-19 | 2022-06-07 | 中国电子科技集团公司第二十九研究所 | Time domain high-stability ultra-wide spectrum pulse source |
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