CN206743204U - Sub- cycle microwave pulse sequence generating device for the manipulation of cold atom quantum state - Google Patents
Sub- cycle microwave pulse sequence generating device for the manipulation of cold atom quantum state Download PDFInfo
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- CN206743204U CN206743204U CN201720440592.8U CN201720440592U CN206743204U CN 206743204 U CN206743204 U CN 206743204U CN 201720440592 U CN201720440592 U CN 201720440592U CN 206743204 U CN206743204 U CN 206743204U
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- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 title claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims description 12
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 claims description 11
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 claims description 11
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 claims description 9
- 101150105073 SCR1 gene Proteins 0.000 claims description 9
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 4
- 230000000306 recurrent effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
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- 230000000737 periodic effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Abstract
The sub- cycle microwave pulse sequence generating device of cold atom quantum state manipulation, including DDS stimuli subsystems, power amplifier, the generation of SRD signals and shaping circuit, the broad-band antenna being sequentially connected；Described SRD signals occur and shaping circuit includes pulse generating circuit and pulse shaper.The utility model solves the problems, such as that time interval when sub- recurrent pulse produced in the past between pulse is longer, the pulse train at different time interval can be obtained by adjusting DDS, and pulse generating unit is simplified, its is easy to operate, implementation is more prone to, and can produce the pulse of pulsewidth narrower (in hundred psecs)；And by adding shaping pulse part, solves the phenomenon that conventional pulse is seriously trailed.
Description
Technical field
It the utility model is related to a kind of sub- cycle microwave pulse sequence generating device.
Background technology
Super-broadband tech (UWB) is a kind of new microwave communication techniques to grow up in recent years, and ultra-wideband pulse has
There is the bandwidth of several GHz magnitudes, and its pulse possesses quick rising and falling edges.Sub- cycle microwave pulse is to be less than in the concussion cycle
The ultra-wideband microwave pulse in 1 cycle, strong with penetration power, strong antijamming capability, frequency band is wider, and anti-stealth capability waits more by force spy
Point, short haul connection is especially suitable for, and has been widely applied to such as covert communications, through-wall radar, detection radar etc..
Ultra wide band also can operate with the manipulation to atom, such as atom can be acted on microwave pulse sequence, and then to its quantum
State is manipulated, and realizes energy level transition, the i on population transfer of atom, its research to field strength and matter interaction in the sub- cycle
Play an important role.
The existing method with more generation monocycle or sub- recurrent pulse mainly has two kinds, i.e., based on the pole of snowslide two
The avalanche effect of pipe produces monocycle or sub- recurrent pulse and produces monocycle or sub- week using the tunneling effect of tunnel diode
Phase pulse.Both approaches are all based on caused by circuit methods, and nanosecond and subnanosecond can be produced by being produced with both approaches
The pulse of rank.But due to this two method when designing circuit, it is necessary to component it is relatively more, pulse is in transmitting procedure medium wave
Larger distortion, such as pulse tail shake or ringing can occur for shape than more serious.Therefore in practical study and the reality of pulse
Inconvenience part will be brought in the application of border.
The content of the invention
The utility model will overcome the disadvantages mentioned above of prior art, there is provided the sub- cycle for the manipulation of cold atom quantum state is micro-
Pulse sequence generating means.
The sub- cycle microwave pulse sequence generating device of cold atom quantum state manipulation, it is characterised in that：Including being sequentially connected
DDS stimuli subsystems 1, power amplifier 2, SRD signals occur and shaping circuit 3, broad-band antenna 4；Described SRD signals hair
Raw and shaping circuit 3 includes pulse generating circuit 31 and pulse shaper 32；
Pulse generating circuit 31 includes：DDS driving sources V1 positive pole and tuning capacitance C1 first ends and encourage inductance L1 the
One end is connected and is connected to the ground, and DDS driving sources V1 negative pole and tuning capacitance C1 the second end, step-recovery diode SRD are just
Pole is all grounded；Encourage the first of the second ends of inductance L1 and first resistor R1 first ends and SRD negative poles and the first capacitance C2
End is connected, and the first load resistance R1 the second end is connected with the first DC offset voltage V2 positive poles, the first DC offset voltage V2
Negative pole is grounded；First capacitance C2 the second end connects pulse shaper 32 as the output end of pulse generating circuit 31
First Schottky diode SCR1 positive pole；
Pulse shaper 32 includes：First Schottky diode SCR1 negative pole and second resistance R2 first ends and second
Capacitance C3 first ends are connected；Second capacitance C3 the second end connects the second Schottky diode SCR2 negative poles, the 3rd
The first end of capacitance C4 first end, the 4th resistance R4；3rd capacitance C4 the second end connection 3rd resistor R3's
First end, the 4th resistance R4 the second end connect the second DC offset voltage V3 negative pole, and the second DC offset voltage V3 is just
Pole, 3rd resistor R3 the second end, the second end of second resistance, the second Schottky diode SCR2 positive pole are all grounded.
In order to obtain the shorter pulse train of two neighboring pulse interval and simplify sub- cycle microwave pulse sequence
Generating means simultaneously produces pulsewidth narrower monocycle or sub- cycle microwave pulse, and the utility model produces controllable frequency using DDS
The pumping signal of rate, the step-recovery diode (SRD) in driving pulse generating means, individual pulse width is produced in hundred psecs
The sub- periodic pulse train of rank, and using shaping component and regulation component, caused pulse is subjected to shaping, reduced
Pulse tail oscillatory occurences caused by strictly matching is not with component due to circuit middle impedance, obtains the preferable pulse of shape, from
And obtain different pulse train.
Technical scheme is used by the utility model solves its technical problem：Utilize the feature of DDS adjustable frequency
The pumping signal of a specific frequency is produced, then its power is amplified by power amplifier, the excitation of the amplification is believed
Number step-recovery diode (SRD) is sent to, is produced using the step current turn-off characteristic of step-recovery diode (SRD) single
Width hundred picoseconds sub- cycle microwave pulse sequence, and in the pulse-generating circuit part based on step-recovery diode
Tuning capacitance of the small capacitances as circuit of a 0.1-0.5pF is added, for adjusting the resonant frequency of circuit, is then produced in pulse
Resistance is added after first portion, Schottky diode carries out shaping as the main devices of shaping unit to pulse.
The beneficial effects of the utility model are：The utility model is solved when sub- recurrent pulse produces in the past between pulse
The problem of time interval is longer, the pulse train at different time interval can be obtained by adjusting DDS, and pulse generating unit obtains
Simplification is arrived, its is easy to operate, implements to be more prone to, and can produce the pulse of pulsewidth narrower (in hundred psecs)；And pass through addition
Shaping pulse part, solves the phenomenon that conventional pulse is seriously trailed.
Brief description of the drawings
Fig. 1 is principle schematic of the present utility model.
Fig. 2 is the switch off current performance plot of SRD under sine-wave excitation.
Fig. 3 is the circuit diagram of the generation of SRD signals and shaping circuit.
Embodiment：
The utility model is further illustrated below in conjunction with the accompanying drawings.
The sub- cycle microwave pulse sequence generating device of cold atom quantum state manipulation, it is characterised in that：Including being sequentially connected
DDS stimuli subsystems 1, power amplifier 2, SRD signals occur and shaping circuit 3, broad-band antenna 4；Described SRD signals hair
Raw and shaping circuit 3 includes pulse generating circuit 31 and pulse shaper 32；
Pulse generating circuit 31 includes：DDS driving sources V1 positive pole and tuning capacitance C1 first ends and encourage inductance L1 the
One end is connected and is connected to the ground, and DDS driving sources V1 negative pole and tuning capacitance C1 the second end, step-recovery diode SRD are just
Pole is all grounded；Encourage the first of the second ends of inductance L1 and first resistor R1 first ends and SRD negative poles and the first capacitance C2
End is connected, and first resistor R1 the second end is connected with the first DC offset voltage V2 positive poles, the first DC offset voltage V2 negative poles
Ground connection；First capacitance C2 the second end connects the first of pulse shaper 32 as the output end of pulse generating circuit 31
Schottky diode SCR1 positive pole；
Pulse shaper 32 includes：First Schottky diode SCR1 negative pole and second resistance R2 first ends and second
Capacitance C3 first ends are connected；Second capacitance C3 the second end connects the second Schottky diode SCR2 negative poles, the 3rd
The first end of capacitance C4 first end, the 4th resistance R4；3rd capacitance C4 the second end connection 3rd resistor R3's
First end, the 4th resistance R4 the second end connect the second DC offset voltage V3 negative pole, and the second DC offset voltage V3 is just
Pole, 3rd resistor R3 the second end, the second end of second resistance, the second Schottky diode SCR2 positive pole are all grounded.
Referring to Fig. 1
Sub- cycle microwave pulse sequence generating device of the present utility model for the manipulation of cold atom quantum state swashs including DDS
Encourage source unit 1, power amplifier 2, SRD signals occur and shaping circuit 3, broad-band antenna 4；The generation process of whole pulse train
Including：The pumping signal of a specific frequency is produced by DDS stimuli subsystems 1, the frequency of the signal can be by DDS device therein
Regulation and control, the pumping signal of optional frequency can be set, be then amplified pumping signal by power amplifier 2, it is laggard
Enter the generation of SRD signals and the excitation of shaping circuit 3 produces the pulse train of specific frequency and carries out shaping to pulse, finally by broadband
Antenna 4 is received.
Referring to Fig. 3
It is described to include two parts, i.e. arteries and veins for the generation of SRD signals and shaping circuit 3 caused by sub- cycle microwave pulse
Rush generation circuit 31 and 32 two parts of pulse shaper.
The course of work of pulse-generating circuit 31：
The pumping signal of a specific frequency is produced by DDS driving sources V1, when the signal and the first DC offset voltage V2 produce
When raw voltage difference is bears, step-recovery diode SRD is in the conduction state, and now, electric current passes through step-recovery diode
SRD simultaneously charges to it, when voltage difference caused by pumping signal and the first DC offset voltage V2 is changed into timing from negative, profit
It is that step-recovery diode SRD will not end immediately with step-recovery diode SRD switch off current characteristic, but electric current is rapid
Reach reverse saturation state, and maintain a period of time, the time in ns ranks, then carries out rapidly back discharge, during the electric discharge
Between in ps ranks, it is zero to make reverse current moment, hereafter encourages inductance L1 to encourage production at step-recovery diode SRD negative poles
A raw sub- cycle microwave pulse, tuning capacitance C1 play a part of to adjust circuit resonant frequencies, and first resistor R1 plays protection circuit
Effect.The sub- recurrent pulse as caused by the process entered by the first capacitance C2 in pulse shaper 32 carry out it is whole
Shape.
The course of work of the circuit of shaping pulse 32：
By the sub- cycle microwave pulse that the first capacitance C2 is transmitted by the first Schottky diode SCR1, first
Schottky diode SCR1 only allows voltage magnitude in pulse to be positive part by passing through the first Schottky diode SCR1
Afterwards, sub- cycle microwave pulse eliminates voltage magnitude as negative part, then again by second resistance R2, by sub- cycle microwave arteries and veins
Trailing portion is decayed in punching, passes through the second Schottky diode SCR2, the second Schottky diode SCR2 threshold value afterwards
Voltage is determined by the second DC offset voltage V3, when the magnitude of voltage for adjusting the second DC offset voltage V3 makes the pole of the second Schottky two
When pipe SCR2 threshold voltage is exactly equal to the sub- cycle microwave pulse trailing portion voltage magnitude maximum that prime transmits,
The second Schottky diode SCR2 now only allows voltage magnitude in sub- cycle microwave pulse to lead to more than the part of the maximum
Cross, thus by the second Schottky diode SCR2 after, the conditions of streaking in sub- cycle microwave pulse is basically eliminated, most rear dragging
The sub- cycle microwave pulse that tail phenomenon is substantially eliminated is received by the 3rd capacitance C4 by broad-band antenna, the second blocking
Electric capacity C3 and the 3rd capacitance C4 plays a part of to exclude direct current signal caused by the second DC offset voltage V3,3rd resistor R3
As load resistance, the 4th resistance R4 plays protection circuit.
Claims (1)
1. the sub- cycle microwave pulse sequence generating device of cold atom quantum state manipulation, it is characterised in that：Including what is be sequentially connected
DDS stimuli subsystems (1), power amplifier (2), SRD signals occur and shaping circuit (3), broad-band antenna (4)；Described SRD
Signal occurs and shaping circuit (3) includes pulse generating circuit (31) and pulse shaper (32)；
Pulse generating circuit (31) includes：DDS driving sources V1 positive pole and tuning capacitance C1 first ends and excitation inductance L1 first
End is connected and is connected to the ground, DDS driving sources V1 negative pole and tuning capacitance C1 the second end, step-recovery diode SRD positive poles
All it is grounded；Encourage the second ends of inductance L1 and first resistor R1 first ends and SRD negative poles and the first capacitance C2 first end
It is connected, the first load resistance R1 the second end is connected with the first DC offset voltage V2 positive poles, and the first DC offset voltage V2 is born
Pole is grounded；Output end connection pulse shaper (32) of first capacitance C2 the second end as pulse generating circuit (31)
The first Schottky diode SCR1 positive pole；
Pulse shaper (32) includes：First Schottky diode SCR1 negative pole and second resistance R2 first ends and second every
Straight electric capacity C3 first ends are connected；Second capacitance C3 the second end connect the second Schottky diode SCR2 negative poles, the 3rd every
Straight electric capacity C4 first end, the 4th resistance R4 first end；The of 3rd capacitance C4 the second end connection 3rd resistor R3
One end, the 4th resistance R4 the second DC offset voltage V3 of the second end connection negative pole, the second DC offset voltage V3 positive pole,
3rd resistor R3 the second end, the second end of second resistance, the second Schottky diode SCR2 positive pole are all grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720440592.8U CN206743204U (en) | 2017-04-25 | 2017-04-25 | Sub- cycle microwave pulse sequence generating device for the manipulation of cold atom quantum state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720440592.8U CN206743204U (en) | 2017-04-25 | 2017-04-25 | Sub- cycle microwave pulse sequence generating device for the manipulation of cold atom quantum state |
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| Publication Number | Publication Date |
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| CN206743204U true CN206743204U (en) | 2017-12-12 |
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| CN201720440592.8U Withdrawn - After Issue CN206743204U (en) | 2017-04-25 | 2017-04-25 | Sub- cycle microwave pulse sequence generating device for the manipulation of cold atom quantum state |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953619A (en) * | 2017-04-25 | 2017-07-14 | 浙江工业大学 | The sub- cycle microwave pulse sequence generating device manipulated for cold atom quantum state |
-
2017
- 2017-04-25 CN CN201720440592.8U patent/CN206743204U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953619A (en) * | 2017-04-25 | 2017-07-14 | 浙江工业大学 | The sub- cycle microwave pulse sequence generating device manipulated for cold atom quantum state |
| CN106953619B (en) * | 2017-04-25 | 2023-11-10 | 浙江工业大学 | Sub-periodic microwave pulse sequence generating device for cold atomic quantum state control |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171212 Effective date of abandoning: 20231110 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20171212 Effective date of abandoning: 20231110 |