CN106026985A - Pulse signal generator and radar including same - Google Patents
Pulse signal generator and radar including same Download PDFInfo
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- CN106026985A CN106026985A CN201610480171.8A CN201610480171A CN106026985A CN 106026985 A CN106026985 A CN 106026985A CN 201610480171 A CN201610480171 A CN 201610480171A CN 106026985 A CN106026985 A CN 106026985A
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- avalanche transistor
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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
- H03K3/335—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with more than two electrodes and exhibiting avalanche effect
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention provides a pulse signal generator, comprising: a drive pulse generation circuit for generating a balance trigger pulse signal; a pulse signal generation circuit for converting the balance trigger pulse signal into an unbalance pulse signal; an overshoot suppression circuit for suppressing the overshoot of the unbalance pulse signal to output the unbalance pulse signal after overshoot suppression; and a balance pulse generation circuit for converting the unbalance pulse signal after overshoot suppression into a balance pulse signal. The present invention further provides a radar including the above-mentioned pulse signal generator. The generator of the present invention has the advantages that the generated balance pulses are symmetric in waveform, small in trailing and overshoot and large in amplitude, and is applicable to detection application systems suitable for medium depth ultra-wide band radars, thereby meeting the detection demands of different depth.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of pulse signal generator, and a kind of
Comprise the radar of this pulse signal generator.
Background technology
Super-broadband tech is that one carries out data communication by subnanosecond level or picosecond narrow pulse signal
Wireless technology, be widely applied in daily life, such as through-wall radar, GPR, life detection
Radar, radar imagery etc..Pulse generator is the important component part of radio ultra wide band system, in certain journey
On degree, the output pulse bandwidth of pulse transmitter determines the bandwidth of operation of radio ultra wide band system, therefore pulse
Signal choose with design for ultra wideband radar system most important.
Currently, the method utilizing semiconductor device to produce pulse signal is probably divided into two classes: one is to use
The race and hazard phenomenon of CMOS logic gate circuit and combination logic function produce burst pulse；Another kind of
It is that charging and discharging effects based on high-speed switching devices forms narrow pulse signal, conventional high-speed switching devices
Having avalanche transistor, step-recovery diode etc., the pulse characteristic that these devices produce is also because of its work
Principle difference and each different, it is adaptable to different demands.
Needed for existing high-power ULTRA-WIDEBAND RADAR, gaussian signal relies on avalanche transistor to produce mostly, logical
Cross cascade audion unit and obtain bigger amplitude, but the amplitude that single transistor produces is relatively
Little, and the pulse that results in of the characteristic of avalanche transistor itself has one after certain time-delay and crosses punching
Produce, the radar precision to descending target acquisition deeper can be affected.
Summary of the invention
(1) to solve the technical problem that
In view of problem above, it is an object of the invention to provide a kind of pulse signal generator and comprise
The radar of this pulse signal generator.
(2) technical scheme
According to an aspect of the present invention, it is provided that a kind of pulse signal generator, including: driving pulse produces
Raw circuit, is used for generating balance start pulse signal；Pulse signal generating circuit, for touching balance
Send out pulse signal and be converted into non-equilibrium pulse signal；Overshoot suppression circuit, is used for suppressing non-equilibrium pulse
Crossing of signal rushes to export the non-equilibrium pulse signal after punching suppresses；And equalizing pulse produces circuit,
For the described non-equilibrium pulse signal crossed after rushing suppression is converted into equalizing pulse signal.
Preferably, described drive signal impulse generation circuit includes that single-ended start pulse signal produces circuit
With triggering pulse shaper, wherein, described single sided pulse triggers signal generating circuit, is used for producing
Trigger signal；Described triggering pulse shaper, its front end is electrically connected to single sided pulse and triggers signal
Produce circuit, for triggering the signal shaping described balance start pulse signal of generation.
Preferably, described triggering pulse shaper includes the first resistance R1, the first electric capacity C1 and
One transformator T1, first end of described first resistance R1 is connected to trigger signal output part, the second end
It is connected to the first transformator T1 primary coil Same Name of Ends, transformer by the first electric capacity C1
Non-same polarity ground connection；First electric capacity C1 is for the triggering signal shaping to input, and transformator T1 is used for
The signal that triggers of input is converted to the balance start pulse signal of both-end.
Preferably, described pulse signal generating circuit includes avalanche transistor pulse-generating circuit, this snow
Collapse audion pulse-generating circuit and include the first avalanche transistor Q3 and the second avalanche transistor Q4, the
The base stage of one avalanche transistor connects balance start pulse signal, at the emitter stage of the first avalanche transistor
Being connected to the base stage of the second avalanche transistor, the colelctor electrode at the second avalanche transistor is connected to pulse letter
Number produce circuit outfan, export non-equilibrium pulse signal.
Preferably, avalanche transistor pulse-generating circuit also includes the first charge and discharge capacitance C4, described
First avalanche transistor emitter stage is connected to the second avalanche transistor current collection through the first charge and discharge capacitance C4
Pole.
Preferably, avalanche transistor pulse-generating circuit also includes the second charge and discharge capacitance C6, described
Second avalanche transistor colelctor electrode is connected to pulse signal generating circuit through the second charge and discharge capacitance C6
Outfan.
Preferably, described overshoot suppression circuit includes being made up of parallel end connection resistance and Schottky diode
Mistake rush suppression module, cross the input inputting earthquake waves pulse signal rushing suppression module, outfan is defeated
Went out the non-equilibrium pulse signal after punching suppression.
Preferably, described equalizing pulse generation circuit includes transformer circuit, described transformer circuit bag
Include the second transformator T2, the Same Name of Ends of the second transformator T2 primary coil inputted punching suppression after non-
Equalizing pulse signal, the non-same polarity ground connection of primary coil；Second transformator T2 secondary coil same
Name end is connected to the first pulse output end of equalizing pulse signal, the second transformator T2 secondary coil
Non-same polarity is connected to the second pulse output end of weighing apparatus pulse signal.
Preferably, described pulse signal generator is ultra broadband 100M radar pulse source.
According to a further aspect in the invention, also provide for a kind of radar, believe including any of the above one pulse
Number generator.
(3) beneficial effect
From above technical scheme, pulse signal generator of the present invention has the advantages that
(1) present invention utilizes the avalanche transistor of two-stage cascade to build pulse signal generation circuit, with
Common avalanche transistor circuit is compared, and this pulse signal generation circuit is producing same Gao Zhongying letter
Under number basis, pulse amplitude is bigger, repetition is higher, reliability is higher；
(2) overshoot suppression circuit of the present invention is made up of terminating resistor and Schottky diode, is used for
Weakening and crossed punching by what avalanche transistor inherent character produced, this overshoot amplitude is less, but to deeper distance
Detection can produce the effect of erroneous judgement, it is therefore desirable to the overshoot suppression circuit of use is weakened, and overcomes
Existing it is cascaded as with audion snowslide that the pulse source amplitude that principle makes is low, repetition is low and had
The problem of punching；
(3) present invention arranges equalizing pulse and produces circuit, and existing ULTRA-WIDEBAND RADAR antenna is mostly flat
Weighing apparatus antenna, and the burst pulse produced from overshoot suppression circuit is uneven form, if directly connect
If entering balancing antenna, having high frequency electric and flow through at its screen layer on access cable, it is right to produce
The radial component answered, even affects the polarised direction of antenna, it is therefore desirable to utilize equalizing pulse to produce electricity
Road, changes into unbalanced signal balanced signal, thus controls to fall the high-frequency electrical of cable shield crust
Stream, it is ensured that signal transmission effect；
(4) present configuration is simple, circuit stability good, the equalizing pulse waveform symmetry of generation,
Hangover and cross rush little, amplitude is big, it is adaptable to be suitable for the detection application system of middle layer depth ULTRA-WIDEBAND RADAR
System, meets the detection demand of different depth.
Accompanying drawing explanation
Fig. 1 is the circuit system structure schematic diagram of the pulse signal generator of the embodiment of the present invention.
Fig. 2 is the circuit diagram of the pulse signal generator of the embodiment of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with concrete real
Execute example, and referring to the drawings, the present invention is described in more detail.It should be noted that at accompanying drawing or
During description describes, similar or identical part all uses identical figure number.Accompanying drawing does not illustrates or retouches
The implementation stated, the form known to ordinary person in art.Although it addition, originally
Literary composition can provide the demonstration of the parameter comprising particular value, it is to be understood that parameter is equal to accordingly without definite
Value, but similar value can be similar in the error margin of tolerance interval or design constraint.
Rationale here is that of the present invention provides a kind of pulse signal generator, utilizes two-stage series connection to avenge
Collapse audion and build nanosecond pulse signal generator as a signal generator circuit, cross punching suppression
Circuit uses parallel end connection structure, utilizes terminating resistor to the coupling of load end impedance to make up snowslide three
The impact of pole tube impedance mismatch, thus reduced the amplitude of punching, and utilize equalizing pulse to produce in circuit
The effect of transformator, it is possible to produce satisfactory voltage amplitude and pulse width.
In an one exemplary embodiment of the present invention, it is provided that a kind of pulse signal generator.Fig. 1
Structural representation for embodiment of the present invention pulse signal generator.Fig. 2 is according to the embodiment of the present invention
The circuit diagram of pulse signal generator.
Refer to Fig. 1 and Fig. 2, the present embodiment pulse signal generator includes:
Driving pulse produces circuit, and it includes that single sided pulse triggers signal generating circuit and triggering pulse is whole
Shape circuit；Single sided pulse triggers signal generating circuit: be used for producing triggering signal；Trigger shaping pulse
Circuit, its front end is electrically connected to trigger signal generating circuit, for carrying out triggering signal at shaping
Reason；Pulse signal generating circuit, its front end is electrically connected to trigger pulse shaper, is used for utilizing
After shaping trigger signal produce nanosecond unbalanced gaussian signal (namely balance trigger pulse letter
Number)；Overshoot suppression circuit, its front end is electrically connected to pulse signal generating circuit, for generation
Pulse signal shaping, suppression signal overshoot amplitude；Equalizing pulse produces circuit, and its front end is electrical
It is connected to overshoot suppression circuit, for the uneven pulse signal produced is converted into equalizing pulse signal.
Individually below each ingredient of the present embodiment pulse signal generator is described in detail.
(1) driving pulse produces circuit
A () single sided pulse triggers signal generating circuit
In the present embodiment, it can be an AWG (Arbitrary Waveform Generator) that single sided pulse triggers signal generator, its
Generation amplitude is 2.5V, and pulse width is 200ns, and signal repetition rate is the square wave letter of 200kHz
Number.
The present invention is not as limitation, and the amplitude triggering signal can be between 2.5V～5V, arteries and veins
Rushing width can be between 50ns～500ns, and signal repetition rate can be between 20kHz～320kHz
Between.
B () triggers pulse shaper
Refer to Fig. 2, trigger pulse shaper and include: the first resistance R1, the first electric capacity C1 and
First transformator T1, wherein the first resistance R1 is as current-limiting resistance, and its first end is connected to trigger letter
Number outfan, the second end is connected to the first transformator by the first electric capacity C1 (as shaping capacitance)
T1 primary coil Same Name of Ends, transformer non-same polarity ground connection.
In this triggering pulse shaper, the first electric capacity C1 triggering square-wave signal shaping to input,
Utilize the electric capacity differential action to square-wave signal, sharpen and trigger signal, and utilize the first transformator T1
The single-ended triggering signal of input is converted to both-end and triggers signal, complete the shaping to start pulse signal.
Additionally, the present invention can not also comprise this triggering pulse shaper, and directly defeated by the external world
Enter a both-end pulse triggering signal meeting above-mentioned condition, equally realize the present invention.
(2) pulse signal generating circuit
Refer to Fig. 2, this pulse signal generating circuit (c) including:
Voltage supply circuit: include the second resistance R2.Wherein the second resistance R2 is as current-limiting resistance,
Its first end is connected to high voltage supply HV (value is between 200V～400V), and the second end is connected to
Charging/discharging voltage control circuit hereinafter described.
Charging/discharging voltage control circuit: include the first radio frequency audion Q1 and the second radio frequency audion Q2,
Bias bleeder network resistor R3, R4 and resistance R5, R6, couple electric capacity C2.Wherein the first radio frequency
Audion Q1 colelctor electrode is connected to the second end and first end of the 3rd resistance R3 of the second resistance R2,
Base stage is passed through the 4th resistance R4 ground connection and is connected to second end of the 3rd resistance R3, and emitter stage is connected to
First end of the 7th resistance R7, the second radio frequency audion Q2 colelctor electrode is connected to the 5th resistance R5's
First end and the first radio frequency audion Q1 colelctor electrode, base stage is by the 6th resistance R6 ground connection and connects
To second end of the 5th resistance R5, emitter stage is connected to first end of the 9th resistance R9.Second electric capacity
First end of C2 is connected to first end of the 3rd resistance R3, the second end ground connection.
Avalanche transistor pulse-generating circuit: include the first avalanche transistor Q3 and the second snowslide three pole
Pipe Q4, couples electric capacity C3 and C5.First avalanche transistor Q3, its colelctor electrode passes through the 8th resistance
R8 and the 7th resistance R7 is connected to the transmitter of the first radio frequency audion Q1, and base stage is connected to first
Transformator T1 secondary coil Same Name of Ends, emitter stage is by the 11st resistance R11 ground connection and is connected to the
First end of one charge and discharge capacitance C4.Second end of the first charge and discharge capacitance C4 is connected to the 12nd electricity
First end of resistance R12, its second end is by the 13rd resistance R13 ground connection and is connected to the 14th resistance
First end of R14, second end of the 14th resistance R14 connects the base stage of the second avalanche transistor Q4.
The colelctor electrode of the second avalanche transistor Q4 is connected to by the tenth resistance R10 and the 9th resistance R9
The emitter stage of two radio frequency audion Q2 is also connected to the second charge and discharge capacitance C6, the second charge and discharge capacitance
Second end of C6 is connected to overshoot suppression circuit, grounded emitter.First end of coupling electric capacity C3 is even
Being connected to second end of the 7th resistance R7, the second end ground connection, first end of coupling electric capacity C5 is connected to the
Second end of nine resistance R9, the second end ground connection.
In this pulse signal generating circuit, the first avalanche transistor is under both-end start pulse signal effect
Fast conducting, collector voltage declines, causes the first radio frequency triode ON that it connects, at high pressure
Under the effect of supply voltage, the first avalanche transistor produces the effect of avalanche breakdown, by the first charge and discharge
The charge and discharge process of electricity electric capacity C4, the emitter stage at avalanche transistor produces significantly driving of positive polarity
Moving pulse signal, then enters the base stage of the second avalanche transistor by potential-divider network, repeats for the first time
Process, make the second avalanche transistor enter the process of avalanche breakdown, and by the second charge and discharge capacitance
The effect of C6, produces negative pulse signal by a larger margin at colelctor electrode.This negative pulse is believed
Number pulse width by the second charge and discharge capacitance C6 value determine, amplitude by high voltage supply voltage HV,
The value of bias bleeder network resistor R3, R4 and resistance R5, R6 together decides on.
(3) overshoot suppression circuit
Refer to Fig. 2, this overshoot suppression circuit (d) including:
Termination resistance circuit, including the first terminating resistor R15, the second terminating resistor R16, the 3rd end
Connecting resistance R17, the first Schottky diode D1 and the second Schottky diode D2.Wherein, first
First end of terminating resistor R15 is connected to second end of the second charge and discharge capacitance C6, the second end ground connection.
First end of the first Schottky diode D1 is connected to first end of the second terminating resistor R16, and second
End is connected to first end of the first terminating resistor R15.First end of the second Schottky diode D2 is even
Being connected to first end of the 3rd terminating resistor R17, the second end is connected to the first of the second terminating resistor R16
End.First end of the 3rd terminating resistor R17 is connected to the Same Name of Ends of the second transformator T2 primary coil,
Second end ground connection.
In this overshoot suppression circuit, owing to avalanche breakdown effect is a negative resistance shape from avalanche condition
State is changed into the process of the high-impedance state at the end of snowslide, and narrow pulse signal is tied in avalanche condition just
The moment of bundle produces, and the most inevitably results in because of avalanche transistor impedance transformation
Small reflection, when this reflection be loaded in main pulse time can after main pulse certain time unit table
It is now that small crossing is rushed, and in the application of ULTRA-WIDEBAND RADAR Underground, direct wave is crossed punching
Can overlap the echo after the corresponding degree of depth time corresponding on window, and the echo amplitude of deep layer with
The overshoot amplitude of direct wave is an order of magnitude, now the detection of radar target can be produced interference,
This is not the problem that only this circuit just has, but all utilizes audion avalanche breakdown effect to produce
The effect that the circuit of pulse all can have, therefore the purpose of overshoot suppression circuit is that suppression is tied by avalanche condition
The produced reflection of beam impedance mismatch, makes the reflection not having in the main pulse after suppression at the end of snowslide.
(4) equalizing pulse produces circuit
Refer to Fig. 2, this equalizing pulse produces circuit (e) and including:
Transformer circuit, including the second transformator T2.Wherein, the second transformator T2 primary coil
Same Name of Ends is connected to first end of the 3rd terminating resistor R17, non-same polarity ground connection, secondary coil same
Name end is connected to the first pulse output end by the 18th resistance R18, and non-same polarity is by the 19th electricity
Resistance R19 is connected to the second pulse output end.
This equalizing pulse produces in circuit, crosses the negative pulse after punching suppression through line transformer
Become positive pulse afterwards and negative pulse exports from two load ends, respectively by non-equilibrium pulse
Become equalizing pulse, may be connected directly to balancing antenna.
Described Gao Zhongying, the method for work of low overshoot pulse generator, its change high voltage supply voltage,
Charge and discharge capacitance C3, C5 and the method for resistance R3, R4, R5, R6, R7, R8, R9, R10,
The output amplitude of pulse, pulse width and repetition rate can be regulated, it is achieved pulse adjustability.
The present embodiment Gao Zhongying, low overshoot pulse generator work process as follows:
Step one, when triggering signal and being in low level state, the first radio frequency audion Q1, second
Audion Q2 is in the conduction state for radio frequency, the first avalanche transistor Q3, the second avalanche transistor Q4
Be in closure state, by base bias bleeder network may decide that the first avalanche transistor Q3,
The collector voltage size of the second avalanche transistor Q4, supply voltage by the 7th resistance R7, the 8th
Resistance R8, the 9th resistance R9 and the tenth resistance R10 are to the first charge and discharge capacitance C4 and the second charge and discharge
Electricity electric capacity C6 charging.
Step 2, when trigger signal be in high level state time, by the first shaping capacitance C1
Effect, makes pulse sharpening, through the effect of transformer circuit, becomes both-end and triggers signal, for snowslide
The pulse-generating circuit of audion provides and triggers pulse.
Step 3, the first avalanche transistor Q3 produce avalanche breakdown effect under the effect triggering signal,
Forming avalanche current, in the charge and discharge process of the first charge and discharge capacitance C4, the emitter stage of Q3 produces
Positive pulse signal is as the driving signal of next stage avalanche transistor circuit.The positive pole that Q3 produces
Property pulse drive signal enters into the second avalanche transistor base stage by biasing resistor potential-divider network so that it is
Entering avalanche breakdown state, avalanche current converges with the avalanche current of the first order, at the second discharge and recharge electricity
Holding in the charge and discharge process of C6, the colelctor electrode of Q4 creates the negative polarity nanosecond Gauss arteries and veins that amplitude is bigger
Rush signal.
The negative pulse signal that step 4, Q4 produce enters in overshoot suppression circuit, by snowslide shape
The reflection that at the end of state, impedance mismatching produces is removed so that the main pulse of generation can meet deeper
Detection demand.Produce circuit finally by equalizing pulse, produce the Differential Output being adapted to balancing antenna
Pulse.
Step 5, the value size of regulation resistance R3, R4, R5, R6, wherein R3, R4 value
100k～600k, R5, R6 value 100k～600k, can regulate avalanche transistor collector voltage
Size, will not consume the biggest power, and then the size of regulation output amplitude simultaneously.Regulation electricity
Resistance R7, R8, R9, R10, the first charge and discharge capacitance C4, the value of the second charge and discharge capacitance C6
Size, can regulate the size of the amplitude of the equalizing pulse of output, width, repetition rate, and electric capacity is more
Greatly, amplitude is the biggest, and pulsewidth is the least, and electric capacity is the biggest with the product of resistance value, and repetition rate is the least.Adjust
The size of C1 is held in economize on electricity, can regulate the width triggering pulse entering avalanche transistor, and value exists
Between 150pF～300pF.Coupling electric capacity C2, C3, C5 span 10nF～100nF it
Between.The value of overshoot suppression circuit resistance is relevant with the transmission line characteristic impedance of involved circuit.
Actual test proves, Gao Zhongying, low mistake that the present embodiment produces rush equalizing pulse signal, pulse
Width is between 3ns～20ns, and for nanosecond order, crest voltage amplitude is ± 70V～± 200V, positive and negative
Pulse symmetry is good, trails little after main pulse, and without crossing punching, ring level is low, meets ULTRA-WIDEBAND RADAR
The middle Layer Detection demand of system.
So far, already in connection with accompanying drawing, the present embodiment has been described in detail.According to above description, this
Gao Zhongying of the present invention, low mistake should be rushed equalizing pulse transmitter by skilled person have been had and has clearly recognized
Know.
Additionally, the above-mentioned definition to each element and method is not limited in the various tools mentioned in embodiment
Body structure, shape or mode, it can be substituted or replace by those of ordinary skill in the art simply,
Such as:
(1), in the present embodiment, trigger signal generating circuit and can also be produced by fpga chip, just
In the system integration.
(2) trigger pulse shaper and can add d type flip flop, be beneficial to make the amplitude of triggering signal
It is controlled better with width, obtains edge and trigger signal faster.
(3) the biasing resistor potential-divider network corresponding to radio frequency audion Q1, Q2 can be by scalable
Potentiometer replace, can more easily regulate output pulse amplitude.
In sum, the present invention utilizes radio frequency audion to control the mode of avalanche transistor collector voltage,
Can attempt using higher high voltage supply voltage, it is provided that the avalanche current bigger to avalanche transistor and
Avoid the thorough thermal breakdown of avalanche transistor to damage, produce pulse by a larger margin.And by building punching
Suppression circuit, by solve avalanche transistor be inherently present after the pulse with the presence of punching phenomenon, make
The transmitter that avalanche transistor must be utilized to make can meet the detection demand of the bigger degree of depth.Utilize transformation
Negative polarity nanosecond pulse signal is converted into balance nanosecond pulse signal by device, can be straight with transmitting antenna
Connect connected, reduce the reflection effect between transmitter and antenna.It addition, the present invention utilizes avalanche transistor
Two-stage series connection attachment structure, by regulation charge and discharge capacitance and the size of resistance, can regulate output arteries and veins
The amplitude of punching, pulsewidth, repetition rate, it is possible to achieve the high repetition frequency that multi-stage cascade is difficult to,
Improve refresh rate during radar process data, be suitable for the detection of the different frequency bands of middle level ULTRA-WIDEBAND RADAR
Application.
Particular embodiments described above, is carried out the purpose of the present invention, technical scheme and beneficial effect
Further describe, be it should be understood that the foregoing is only the present invention specific embodiment and
, be not limited to the present invention, all within the spirit and principles in the present invention, that is done any repaiies
Change, equivalent, improvement etc., within protection scope of the present invention all should being included in.
Claims (10)
1. a pulse signal generator, it is characterised in that including:
Driving pulse produces circuit, is used for generating balance start pulse signal；
Pulse signal generating circuit, for being converted into non-equilibrium pulse signal by balance start pulse signal；
Overshoot suppression circuit, for suppress non-equilibrium pulse signal cross punching with exported punching suppression after
Non-equilibrium pulse signal；And
Equalizing pulse produces circuit, for being converted into by the described non-equilibrium pulse signal crossed after rushing suppression
Equalizing pulse signal.
Pulse signal generator the most according to claim 1, it is characterised in that described driving
Signal pulse produces circuit and includes that single-ended start pulse signal produces circuit and triggers pulse shaper,
Wherein,
Described single sided pulse triggers signal generating circuit, is used for producing triggering signal；
Described triggering pulse shaper, its front end is electrically connected to single sided pulse and triggers signal generation electricity
Road, for triggering the signal shaping described balance start pulse signal of generation.
Pulse signal generator the most according to claim 2, it is characterised in that described triggering
Pulse shaper includes the first resistance R1, the first electric capacity C1 and the first transformator T1, described
First end of one resistance R1 is connected to trigger signal output part, and the second end is connected by the first electric capacity C1
To the first transformator T1 primary coil Same Name of Ends, the first transformator T1 primary coil non-same polarity ground connection；
First electric capacity C1 is for the triggering signal shaping to input, and transformator T1 is for by the triggering letter of input
Number be converted to the balance start pulse signal of both-end.
Pulse signal generator the most according to claim 1, it is characterised in that described pulse
Signal generating circuit includes avalanche transistor pulse-generating circuit, this avalanche transistor pulse-generating circuit
Including the first avalanche transistor Q3 and the second avalanche transistor Q4, the base stage of the first avalanche transistor is even
Connecing balance start pulse signal, the emitter stage at the first avalanche transistor is connected to the second avalanche transistor
Base stage, the colelctor electrode at the second avalanche transistor is connected to the outfan of pulse signal generating circuit,
Export non-equilibrium pulse signal.
Pulse signal emitter the most according to claim 4, it is characterised in that snowslide three pole
Pipe pulse-generating circuit also includes the first charge and discharge capacitance C4, described first avalanche transistor emitter stage
It is connected to the second avalanche transistor colelctor electrode through the first charge and discharge capacitance C4.
Pulse signal emitter the most according to claim 4, it is characterised in that snowslide three pole
Pipe pulse-generating circuit also includes the second charge and discharge capacitance C6, the current collection of described second avalanche transistor
Pole the second charge and discharge capacitance C6 is connected to the outfan of pulse signal generating circuit.
Pulse signal generator the most according to claim 1, it is characterised in that described mistake is rushed
Suppression circuit includes that the mistake being made up of parallel end connection resistance and Schottky diode rushes suppression module, crosses punching
The input inputting earthquake waves pulse signal of suppression module, outfan exported punching suppression after non-equilibrium
Pulse signal.
Pulse signal generator the most according to claim 1, it is characterised in that described balance
Pulse-generating circuit includes that transformer circuit, described transformer circuit include the second transformator T2, the
The Same Name of Ends of two transformator T2 primary coils inputted the non-equilibrium pulse signal after punching suppression, primary
The non-same polarity ground connection of coil；The Same Name of Ends of the second transformator T2 secondary coil is connected to equalizing pulse
First pulse output end of signal, the non-same polarity of the second transformator T2 secondary coil is connected to Heng Mai
Rush the second pulse output end of signal.
Pulse signal generator the most according to claim 1, it is characterised in that described pulse
Signal generator is ultra broadband 100M radar pulse source.
10. a radar, including the pulse signal generator described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480171.8A CN106026985A (en) | 2016-06-27 | 2016-06-27 | Pulse signal generator and radar including same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610480171.8A CN106026985A (en) | 2016-06-27 | 2016-06-27 | Pulse signal generator and radar including same |
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| Publication Number | Publication Date |
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| CN106026985A true CN106026985A (en) | 2016-10-12 |
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| CN201610480171.8A Pending CN106026985A (en) | 2016-06-27 | 2016-06-27 | Pulse signal generator and radar including same |
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