CN206023726U - Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit - Google Patents
Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit Download PDFInfo
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- CN206023726U CN206023726U CN201620648936.XU CN201620648936U CN206023726U CN 206023726 U CN206023726 U CN 206023726U CN 201620648936 U CN201620648936 U CN 201620648936U CN 206023726 U CN206023726 U CN 206023726U
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Abstract
The utility model is related to a kind of micropower high-amplitude nanosecond ultra-narrow pulse and produces circuit, including the trigger circuit of two generation positive negative pulse stuffing signals, anti-phase amplification is carried out in undersuing input transformer group in two triggers, and the snowslide that the anti-phase amplification signal of output in transformer group forms avalanche effect is formed circuit, and the pulse output end that circuit is connected output high-amplitude, ultra-narrow pulse is formed with snowslide.The beneficial effect that the utility model brings is that super low-power consumption, pulse pole are narrow, and impulse amplitude is high, and pulse stretching is little, reliable and stable, for the expansion of the application of micropower impulse radar has certain contribution.
Description
Technical field
The utility model is related to a kind of micropower high-amplitude nanosecond ultra-narrow pulse and produces circuit.
Background technology
It is most crucial part in radar transmitter that ultra-narrow pulse produces circuit, and its major function produces stable
Pulse signal, and the performance of the higher radar of the more narrow degree of pulsewidth is also better.Also require in the radar of micropower that power consumption will be very
Low, this just greatly enhances the design difficulty of pulse source circuit.In pulse source circuit the amplitude of pulse and width with
And power consumption is contradiction, in conventional pulse-generating circuit, always the high pulsewidth of amplitude has just broadened power consumption adjustment circuit parameter
Gao Liao, pulse width, amplitude reduces (referring to Fig. 1) again.It is difficult to ensure that output pulse width is extremely narrow in the case where power consumption is very low again
The very high pulse of amplitude.
Along with the overall development of micropower impulse radar technology, the impulse radar of micropower has been penetrated into including biology
The every field such as medical science, pipeline detection, life rescue, safety check imaging, therefore for the performance indications requirement of radar is also more next
Harsher, and the topmost performance indications of radar are exactly resolution ratio and detection range, both indexs are exactly by radar emission
Come determined, the research for the ultra-narrow pulse generation circuit of this specific demand is also current to pulse-generating circuit in machine
One study hotspot, particularly realizes the pulse-generating circuit design of high-amplitude narrow spaces under power consumption constraint.
Utility model content
The purpose of this utility model is to provide a kind of ultra-narrow pulse that applies in micropower impulse radar emitter and produces
Circuit, can export the ultra-narrow pulse of the nanosecond of high-amplitude in the case where average power consumption is very low.
Realize that the technical scheme of the utility model purpose is as follows：
Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit, including the trigger of two generation positive negative pulse stuffing signals
Circuit, carries out anti-phase amplification in the undersuing input transformer group in two triggers, and
The snowslide that the anti-phase amplification signal of output in transformer group forms avalanche effect is formed circuit, and
The pulse output end that circuit is connected output high-amplitude, ultra-narrow pulse is formed with snowslide.
Further, the trigger circuit includes the RC circuits for becoming positive negative pulse stuffing signal to trigger, and
It is connected the diode for filtering positive pulse signal with RC circuits.
Further, the transformer group includes six transformers, wherein, constitutes one group per three transformers connected in parallel, per
The output end of individual transformer forms circuit with snowslide and is connected.
Further, the snowslide forms circuit includes three six avalanche transistors for constituting a group, two groups of transformers
Corresponding with two groups of avalanche transistors, the anti-phase amplification signal of six transformer outputs is input into six three poles of snowslide correspondingly
Pipe base stage, six avalanche transistors are in parallel and neighboring avalanche triode between connected by interelectrode capacity before and after colelctor electrode with send out
Emitter-base bandgap grading.
Further, the avalanche transistor emitter stage output positive pulse in one group of avalanche transistor and another group of snowslide three
Avalanche transistor emitter stage output negative pulse in pole pipe forms the output high-amplitude, the pulse output end of ultra-narrow pulse.
Further, the pulse output end is connected with LC filter circuits.
Further, the pulse-generating circuit also includes HVB high voltage bias circuit, and which includes high voltage input terminal, high voltage input terminal
Resistance flowing resistance is connected between each avalanche transistor colelctor electrode, and is placed between high voltage input terminal and current-limiting resistance
LC filter circuits.
Further, the signal that the trigger circuit is produced trigger simultaneously the triggering of six tunnels through anti-phase amplification of transformer
Avalanche transistor.
Above-mentioned technical proposal is employed, trigger becomes positive negative pulse stuffing signal through RC circuits, then filters through diode
Positive pulse is removed, only undersuing enters transformer, and the anti-phase amplification through each transformer is input to each three pole of snowslide
The base stage of pipe, enables six triodes while triggering；It is connected by interelectrode capacity between six avalanche transistors, avalanche effect mistake
To interelectrode capacity charging and discharging in journey, generally obtain narrower pulse, the low-capacitance that interelectrode capacity is all high pressure resistant
Electric capacity；LC filter circuit of the HVB high voltage bias voltage through two-stage, then the colelctor electrode through current-limiting resistance output to avalanche transistor,
Current-limiting resistance selects high-power big resistance；When pulse is exported, positive pulse is exported from one end, the other end exports negative pulse, outlet
Place two-way unification road can just export the ultra-narrow pulse of high-amplitude, and it is that pulse is more steady that end adds LC filter circuits.This practicality
The new beneficial effect that brings is that super low-power consumption, pulse pole are narrow, and impulse amplitude is high, and pulse stretching is little, reliable and stable, for micro-
The expansion of the application of power rush radar has certain contribution.
Description of the drawings
Circuit diagrams of the Fig. 1 for traditional pulse source；
Fig. 2 is schematic diagram of the present utility model；
Fig. 3 is circuit diagram of the present utility model.
Specific embodiment
Purpose, technical scheme and advantage for making the utility model embodiment is clearer, new below in conjunction with this practicality
Type embodiment, is clearly and completely described to the technical scheme of the utility model embodiment.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments.Based on described embodiment of the present utility model,
The every other embodiment obtained on the premise of without the need for creative work by those of ordinary skill in the art, belongs to this practicality
Novel protected scope.
Referring to Fig. 2,3, micropower high-amplitude nanosecond ultra-narrow pulse produce circuit, including two generation positive negative pulse stuffing signals
Trigger circuit, carry out anti-phase amplification in the undersuing input transformer group in two triggers, and will become
In depressor group, the anti-phase amplification signal of output forms the snowslide formation circuit of avalanche effect, and is connected with snowslide formation circuit defeated
Go out the pulse output end of high-amplitude, ultra-narrow pulse.Pulse duty factor is extremely low, and the triggered time is extremely short, so as to ultralow power consumption.
Wherein, trigger circuit includes the RC circuits for becoming positive negative pulse stuffing signal to trigger, and with RC circuits
Connection filters the diode of positive pulse signal.
Transformer group includes six transformers T1, T2, T3, T4, T5, T6, wherein, constitutes one per three transformers connected in parallel
Group, the output end of each transformer form circuit with snowslide and are connected.Snowslide forms circuit includes three six snow for constituting a group
Collapse triode Q1, Q2, Q3, Q4, Q5, Q6, two groups of transformers are corresponding with two groups of avalanche transistors, the output of six transformers anti-
Mutually amplify signal six avalanche transistor base stages of input correspondingly, six avalanche transistors parallel connections and neighboring avalanche triode
Between connected by interelectrode capacity before and after colelctor electrode and emitter stage.An avalanche transistor emitter stage in one group of avalanche transistor
Output positive pulse forms the output high-amplitude with the avalanche transistor emitter stage output negative pulse in another group of avalanche transistor
Degree, the pulse output end of ultra-narrow pulse.The emitter stage of two groups of avalanche transistors exports positive and negative pulse, after output connects build-out resistor
Can be from unipolar pulse within pulse output end output more than 250V 2ns.Pulse output end is connected with LC filter circuits, makes output more
Stable.
The pulse-generating circuit also includes HVB high voltage bias circuit, and which includes high voltage input terminal, high voltage input terminal and each
Resistance flowing resistance, and the LC filtered electricals being placed between high voltage input terminal and current-limiting resistance is connected between avalanche transistor colelctor electrode
Road；Using stablizing 300V high pressure, and the colelctor electrode by the high power current-limiting resistance output of 10K to triode.
The signal that trigger circuit is produced trigger simultaneously six road triggering avalanche triodes through anti-phase amplification of transformer.
Circuit of the present utility model is described the citation form of reference crystal pipe snowslide circuit in this example, the principle is fitted
For multiple transistors or the pulse-generating circuit of field-effect transistor.
In basic transistor snowslide circuit, when high voltage between colelctor electrode and emitter stage to avalanche transistor,
Electric field in collector junction space-charge region is strengthened therewith, will form electron hole pair in the presence of highfield.The new electricity for producing
Son is moved as original electron hole in the opposite direction with hole, after regaining enough energy, again can be by touching
Hit, after backward voltage increases to a certain numerical value, the multiplication situation of carrier is just as occurring snowslide one
Sample increases not only many but also fast, and is increased dramatically reversing the current, causes collector junction avalanche breakdown, i.e. first breakdown.
As colelctor electrode is breakdown, the resistance between colelctor electrode and emitter stage is actually only dependent upon the conduction of emitter junction
Rate, for most of transistor, is about tens ohm in the moment resistance for puncturing.Due to now junction resistance very little, higher
Under voltage effect, when electric current reaches a certain bigger numerical, just there is second breakdown.At this moment, transistor voltage drop reduces, due to logical
Very big electric current is crossed, PN junction temperature is drastically raised, and causes thermal breakdown.After collector breakdown, collection is penetrated electrode resistance and depends on sending out
The conductance of emitter-base bandgap grading, general only tens ohm, high voltage will produce high current, consume the power increase on PN junction, when super
When crossing the dissipated power that transistor is allowed, PN junction thermal breakdown can be caused.Although snowslide pipe thermal breakdown state can cause transistor not
Recoverable damage, but avalanche breakdown is reversible, when timely limit transistor heating power, after backward voltage reduces,
Transistor still can recover original characteristic, it is possible to allow transistor to be safely operated in avalanche condition, repeatedly repeatedly without
Cause damage；And thermal breakdown can cause permanent damage.If reversing the current during avalanche breakdown can be limited, voltage is made
The dissipated power that pipe is allowed is less than with the product of electric current, it is possible to allow transistor to be safely operated in avalanche condition, repeatedly
Repeatedly without causing damage.
Referring to Fig. 2, line trigger signal 1 and 2 requires the completely isometric two pulse signals synchronism output and less of can guarantee that
Concussion, and around trigger, must have completely good reference ground.Two-way positive negative pulse stuffing must also be tried one's best symmetrically up and down,
High speed signal must strictly observe impedance matching principle to design making sheet, strictly calculate signal transmission linear distance and impedance.From
And the pulse output par, c being only possible in end obtains the ultra-narrow pulse of a high-amplitude, and pulse stretching very little.
The utility model can produce the micropower ultra-narrow pulse generation circuit within more than 250V 2ns, it is intended to for micro- work(
The detection radar of rate provides reliable and stable transmitting clock.The utility model is passed through by the trigger that prime is produced first
The anti-phase of transformer is allowed to triggering avalanche triode, and avalanche effect occurs in the then HVB high voltage bias conducting added by triode, passes through
Six grades of snowslide triodes cascade the cumulative electric discharge to form pulse electric charge, finally respectively from first and last level export high-amplitude negative pulse and
Positive pulse.The utility model can utilize the optimisation technique of radio circuit design, select suitable avalanche transistor, so as to realize
Produce the high-amplitude ultra-narrow pulse of Micro Energy Lose.
Claims (8)
1. micropower high-amplitude nanosecond ultra-narrow pulse produces circuit, it is characterised in that the pulse-generating circuit includes two products
The trigger circuit of raw positive negative pulse stuffing signal, is carried out in the undersuing input transformer group in two triggers anti-phase
Amplify, and
The snowslide that the anti-phase amplification signal of output in transformer group forms avalanche effect is formed circuit, and
The pulse output end that circuit is connected output high-amplitude, ultra-narrow pulse is formed with snowslide.
2. micropower high-amplitude nanosecond ultra-narrow pulse according to claim 1 produces circuit, it is characterised in that described tactile
Signaling circuit includes the RC circuits for becoming positive negative pulse stuffing signal to trigger, and be connected with RC circuits filter positive pulse letter
Number diode.
3. micropower high-amplitude nanosecond ultra-narrow pulse according to claim 1 produces circuit, it is characterised in that the change
Depressor group includes six transformers, wherein, constitutes one group per three transformers connected in parallel, the output end of each transformer and snowslide shape
Connect into circuit.
4. micropower high-amplitude nanosecond ultra-narrow pulse according to claim 3 produces circuit, it is characterised in that the snow
Collapse and to form circuit and include that three constitute one group of six avalanche transistors, two groups of transformers are corresponding with two groups of avalanche transistors,
The anti-phase amplification signal of six transformer outputs is input into six avalanche transistor base stages correspondingly, and six avalanche transistors are simultaneously
Colelctor electrode and emitter stage before and after being connected by interelectrode capacity between connection and neighboring avalanche triode.
5. micropower high-amplitude nanosecond ultra-narrow pulse according to claim 4 produces circuit, it is characterised in that one group of snow
The avalanche transistor emitter stage output positive pulse collapsed in triode is sent out with the avalanche transistor in another group of avalanche transistor
Emitter-base bandgap grading output negative pulse forms the output high-amplitude, the pulse output end of ultra-narrow pulse.
6. micropower high-amplitude nanosecond ultra-narrow pulse according to claim 5 produces circuit, it is characterised in that the arteries and veins
Rush output end and be connected with LC filter circuits.
7. micropower high-amplitude nanosecond ultra-narrow pulse according to claim 4 produces circuit, it is characterised in that the pulse
Producing circuit also includes HVB high voltage bias circuit, and which includes high voltage input terminal, high voltage input terminal and each avalanche transistor current collection
Resistance flowing resistance, and the LC filter circuits being placed between high voltage input terminal and current-limiting resistance is connected between pole.
8. the micropower high-amplitude nanosecond ultra-narrow pulse according to any one of claim 4-7 produces circuit, its feature
It is, the signal that the trigger circuit is produced trigger simultaneously six road triggering avalanche triodes through anti-phase amplification of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620648936.XU CN206023726U (en) | 2016-06-27 | 2016-06-27 | Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620648936.XU CN206023726U (en) | 2016-06-27 | 2016-06-27 | Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit |
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| Publication Number | Publication Date |
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| CN206023726U true CN206023726U (en) | 2017-03-15 |
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| CN201620648936.XU Active CN206023726U (en) | 2016-06-27 | 2016-06-27 | Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067786A (en) * | 2016-06-27 | 2016-11-02 | 湖南正申科技有限公司 | Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit |
| CN108490435A (en) * | 2018-02-09 | 2018-09-04 | 湖南正申科技有限公司 | A kind of strong penetrability three-dimensional radar life detection positioning device of high-resolution |
-
2016
- 2016-06-27 CN CN201620648936.XU patent/CN206023726U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067786A (en) * | 2016-06-27 | 2016-11-02 | 湖南正申科技有限公司 | Micropower high-amplitude nanosecond ultra-narrow pulse produces circuit |
| CN108490435A (en) * | 2018-02-09 | 2018-09-04 | 湖南正申科技有限公司 | A kind of strong penetrability three-dimensional radar life detection positioning device of high-resolution |
| CN108490435B (en) * | 2018-02-09 | 2021-02-09 | 湖南正申科技有限公司 | High-resolution high-penetrability three-dimensional radar life detection positioning device |
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