CN209088906U - A kind of square-topped pulse magnetic field generation device and terahertz electromagnetic wave generation system - Google Patents
A kind of square-topped pulse magnetic field generation device and terahertz electromagnetic wave generation system Download PDFInfo
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Abstract
The utility model provides square-topped pulse magnetic field generation device and terahertz electromagnetic wave generation system, it include: that the first power supply discharges to hollow magnet, generate main field, when discharging into for the first predetermined time, it is turned on and off by controlling IGBT discontinuity so that second source discharges to the first bucking coil and the second bucking coil, compensation magnetic field is generated, in the second predetermined time, IGBT is turned off and stops discharging to the first bucking coil and the second bucking coil；Main field and compensation magnetic field superposition are at total magnetic field, the duty ratio that the discontinuity of IGBT turns on and off is determined according to the magnetic field strength of total magnetic field in preset time period, so that the magnetic field of total magnetic field remains unchanged in preset time period, square-topped pulse magnetic field is formed, predetermined amount of time is from the first preset time to the period of the second preset time.The utility model can sustainedly and stably for output pulse width more than millisecond magnitude, frequency reaches THz magnitude within the square-topped pulse duration, and power reaches the THz wave of kW magnitude.
Description
Technical field
The utility model relates to magnetic field technique fields, more particularly, to a kind of square-topped pulse magnetic field generation device and too
Hertz electromagnetic wave generation system.
Background technique
Terahertz (THz) electromagnetic radiation is that frequency is in 0.3THz-10THz (1THz=1012Hz the high-frequency electromagnetic between)
Wave, in the frequency range between the millimeter wave and infrared light not yet sufficiently studied at present.Since THz wave is special
Frequency range, with characteristics such as wide bandwidth, high s/n ratio, Low emissivity, strong penetrability.Therefore THz wave communication, imaging,
The numerous areas such as biotechnology, astronomy, physics and material foundation research have important application value.But current Terahertz Technology
It is that power of radiation source is too low using the maximum technical problem faced, is not able to satisfy most of application scenarios.Therefore Terahertz
Basis of the source as Terahertz science and technology, research can generate the THz source of high-power signal output in Terahertz frequency range
Technology has great importance.
Electronic cyclotron maser is based on relativistic effect, and electronics does circumnutation in stationary magnetic field and generates stimulated radiation
The phenomenon that.Terahertz gyrotron be a kind of fast wave device based on electronic cyclotron maser and it is currently the only can be in Terahertz frequency
The device of high-power output is generated in section.The working frequency ω of gyrotron depends on cyclotron frequency ω=seB of electronics0/γme,
Wherein s is overtone order, and e is the quantity of electric charge of electronics, B0For the magnetic induction intensity of operating fields, γ is relativistic factor, meFor electricity
Protonatomic mass.It can be seen that realize that the THz wave of higher frequency then needs higher magnetic field or work under higher hamonic wave mode.
But to realize that higher power output then needs to work as far as possible under fundamental mode, while overtone order it is excessively high can bring it is serious
Mode competition problem so that gyrotron design it is more difficult.Gyrotron mainly has two kinds of Working moulds of continuous wave and pulse at present
Formula.
Continuous wave operating mode is that continuous THz wave output is carried out under stable magnetic field, is also presently the most normal
A kind of operating mode, the operating fields needed for being provided using superconducting magnet.But it from the above will be in fundamental mode
The lower operating fields for generating the even higher rate-adaptive pacemaker of 1THz and then needing about 36T or more, current superconducting magnet also far from
Reach so high magnetic field strength.Impulse magnetic field then provides the thinking of another solution, and pulse working mode is in arteries and veins
Rush output pulse THz wave under magnetic field condition.Though current pulsed mode can improve output frequency and guarantee output work
Rate, but less than the electromagnetic wave signal that could export design work frequency in the very short time of tens microseconds only at peak value, finally
Output energy and the working time tend not to meet the needs of practical application.The case where for the above contradiction, is now badly in need of research
It being capable of the THz source for exporting high-power high-frequency rate signal stable in a long time.
Utility model content
In view of the drawbacks of the prior art, utility model aims to solve prior art based superconductive magnets or general
Logical pulsed magnetic field exports terahertz electromagnetic wave, thus can not output pulse width more than millisecond magnitude, frequency reaches THz magnitude, power
Up to kW magnitude electromagenetic wave radiation the technical issues of.
To achieve the above object, in a first aspect, the utility model provides a kind of square-topped pulse magnetic field generation device, comprising:
Coaxial the first bucking coil, hollow magnet and the second bucking coil；
The hollow magnet is coaxially located between first bucking coil and the second bucking coil, first compensating line
Circle and the second bucking coil around on the contrary, making the mutual inductance and hollow magnet between first bucking coil and hollow magnet
And the second mutual inductance between bucking coil is cancelled out each other；
The hollow magnet and the first power supply are composed in series the first discharge loop；
First bucking coil, the second bucking coil, IGBT switch are composed in series the second discharge loop with second source；
First power supply discharges to hollow magnet, generates main field, when discharging into for the first predetermined time, by described in control
IGBT discontinuity turns on and off so that second source discharges to the first bucking coil and the second bucking coil, and generation compensates magnetic
, in the second predetermined time, turns off the IGBT and stop discharging to the first bucking coil and the second bucking coil；The main field
With compensation magnetic field superposition at total magnetic field, the duty ratio that the discontinuity of the IGBT turns on and off is according to magnetic total in preset time period
The magnetic field strength of field determines, to control the intensity size in the compensation magnetic field, so that the magnetic of total magnetic field described in preset time period
Remain unchanged, form square-topped pulse magnetic field, the predetermined amount of time be from the first preset time to the second preset time when
Between section.
Specifically, the square-topped pulse magnetic field is the magnetic that magnetic field strength amplitude remains unchanged in preset durations section
?.
Optionally, device further include: magnetic field detecting coil, comparator and PID controller；
The intensity of magnetic field detecting coil real-time detection total magnetic field；
The corresponding voltage signal of the intensity of the total magnetic field compared with reference voltage, is obtained error letter by the comparator
Number；
The duty ratio that the PID controller is turned on and off according to the discontinuity that the error signal controls the IGBT.
Optionally, first power supply is capacitor power, first discharge loop further include: thyristor switch, the
One continued flow resistance and the first freewheeling diode；
When the thyristor switch is opened, the capacitor power discharges to hollow magnet, and continues complete to pulsed discharge
At；
After first continued flow resistance and the series connection of the first freewheeling diode, the both ends of the capacitor power are connected in parallel on, are used
In, to hollow magnet afterflow, making the pulse current of the first discharge loop when condenser voltage is reversed and pulsed magnetic field is unidirectional
Impulse waveform.
Optionally, the second source be battery feed, second discharge loop further include: the second continued flow resistance and
Second freewheeling diode；
After second continued flow resistance and the series connection of the second freewheeling diode, the both ends of the battery feed are connected in parallel on, are used
In letting out energy to the first bucking coil and the second bucking coil when IGBT is turned off.
Optionally, the PID controller is turned on and off according to the discontinuity that the error signal controls the IGBT
Duty ratio, PID controller are as follows to the operational formula of error signal e (t):
Wherein, Tduty(t) it indicates to open width duration time, K in IGBT control signal each periodpIndicate error ratio
The example factor, KIIndicate the error intergal factor, KDIndicate error differential divisor, t1Indicate control initial time, t indicates current time.
Second aspect, the utility model provide a kind of terahertz electromagnetic wave generation system, comprising: electron gun, resonant cavity, such as
Square-topped pulse magnetic field generation device, collector and the output window that first aspect provides；
The emission of cathode electronics of the electron gun is infused；
The resonant cavity is connected to electron gun exit；
The periphery of the resonant cavity is arranged in the square-topped pulse magnetic field generation device, and coaxial with the resonant cavity, institute
It states square-topped pulse magnetic field generation device and provides square-topped pulse magnetic field for resonant cavity, the square-topped pulse magnetic field is by the electronics injection pressure
Contracting so that electronics note inspires electromagnetic wave in resonant cavity, the electromagnetic wave from electronics infuse to obtain energy after it is defeated to output window
Out；If the square-topped pulse magnetic field strength reaches 36T or more within a preset period of time, the frequency of the electromagnetic wave exported can reach
It is terahertz electromagnetic wave to 1THz or more；
The collector is connected to the rear class of resonant cavity, for the electronics note after collecting action；
The output window is connected to the rear class of collector, for the terahertz electromagnetic wave to be exported, the Terahertz electricity
The duration of magnetic wave is related to the time span of the preset time period, and the power of the terahertz electromagnetic wave is kW magnitude
Electromagenetic wave radiation；
Optionally, in the outside of resonant cavity, the hollow magnet is covered in first compensation the first compensating line snare
The outside of coil, the second compensating line snare is in the outside of the hollow magnet.
Optionally, which further includes electron gun magnet；The electron gun magnet is located at the periphery of electron gun, for adjusting
The magnetic field space distribution in square-topped pulse magnetic field is infused with compression of electronic.
In general, have the above technical solutions conceived by the present invention are compared with the prior art, with following
Beneficial effect:
The utility model generates the method that circuit generates compensation magnetic field using the compensation magnetic field of uncoupling and has obtained in flat-top
Pulse duration TfInterior maintenance constant amplitude and intensity reach the pulsed magnetic field work wave of 36T or more, under this field waveform
Gyrotron can be in square-topped pulse duration TfInterior generation pulsewidth reaches Millisecond or more, and frequency reaches THz magnitude, and power reaches kW magnitude
Electromagenetic wave radiation.Therefore the utility model simultaneously solve square-topped pulse field waveform generation and gyrotron high-frequency,
The problem of high power persistently exports.
Detailed description of the invention
Fig. 1 is the schematic diagram of square-topped pulse magnetic field generation device provided by the utility model；
Fig. 2 is the field waveform that main magnet generates under different situations provided by the utility model；
Fig. 3 is the structural schematic diagram of terahertz electromagnetic wave generation system provided by the utility model；
Fig. 4 is square-topped pulse magnetic field provided by the utility model and THz wave Simulation of SAR power image waveform；
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which: and 1 is electron gun, 2
It is pulse magnet for electron gun magnet, 3,4 be resonant cavity, and 5 be hollow beam, and 6 be collector, and 7 be output window.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
The utility model provides a kind of terahertz electromagnetic wave generation system and square-topped pulse magnetic field generation device.Wherein, too
Hertz electromagnetic wave generation system is based on convolution pipe device, therefore can become square-topped pulse Terahertz convolution pipe device again.
Fig. 1 is the schematic diagram of square-topped pulse magnetic field generation device provided by the utility model, as shown in Figure 1, comprising: main magnetic
Field generates circuit, compensation magnetic field and generates circuit and signal acquisition and controlling circuit.Wherein, the square-topped pulse magnetic field generation device base
In coaxial bucking coil c, hollow magnet a and bucking coil b, equivalent circuit diagram is reduced in Fig. 1.Specific bucking coil
With magnet structure reference can be made to shown in pulse magnet part in Fig. 3.
It includes by capacitor power U that wherein main field, which generates circuit,c, thyristor switch S1, magnet a inductance La, magnet a
Resistance Ra, line resistance Rext1The discharge loop being followed in series to form, and capacitor both ends are connected in parallel on by continued flow resistance R1With
Diode D1The continuous current circuit being composed in series.
Compensating magnetic field and generating circuit includes by battery feed Ub, bucking coil b inductance Lb, bucking coil c inductance
Lc, bucking coil b and c resistance Rb+Rc, line resistance Rext2, the discharge loop that is followed in series to form of IGBT switch T, and simultaneously
Battery feed both ends are associated in by continued flow resistance R2With diode D2The continuous current circuit being composed in series.
Signal acquisition and controlling circuit includes magnetic field detecting coil Lpc, reference signal Vref, comparator k and PID controller.
The working principle of square-topped pulse magnetic field generation device is to generate circuit by main field first and generate to magnet a electric discharge
Main field.Main field circuit is LC discharge circuit, circuit equation are as follows:
Wherein I1For the electric current that magnet a flows through, C is capacitor capacitance value, Uc0For capacitor initial voltage.Main field generates
Circuit is capacitor discharge circuit, can generate the impulse magnetic field of 36T or more.
In the flat-top duration T of square-topped pulsefInitial time compensation magnetic field generate circuit start electric discharge to compensate magnetic
The magnetic field that body a is generated, compensation magnetic field generate the circuit equation in circuit are as follows:
Wherein I2For the electric current that bucking coil b and c flow through, t0At the time of switching disconnection for IGBT.It compensates magnetic field and generates circuit
For battery discharge loop, the compensation magnetic field that amplitude is tesla's magnitude can be generated.MabBetween magnet a and bucking coil b
Mutual inductance, MacFor the mutual inductance between magnet a and bucking coil c, due to the coupling of magnet a and bucking coil b and c, main field circuit
Circuit equation becomes:
If only bucking coil c, the electric discharge that compensation magnetic field generates circuit can generate as mended in Fig. 2 major loop field circuit
Repay degaussing effect shown in the field curve of the non-uncoupling of coil.Therefore design is generated in circuit around to opposite in compensation magnetic field
Two groups of bucking coils b and c, and make Mab=-Mac.Main field generates loop circuit equation at this time and compensation magnetic field generates circuit
Consistent when not discharging, generating magnetic field is as shown in the field curve of bucking coil uncoupling in Fig. 2.It compensates magnetic field and generates circuit electricity
Road equation becomes:
In the case where the electric discharge that main field generates circuit and compensation magnetic field generation circuit will not be generated and be interacted, finally
Magnetic field strength is that main magnetic field field circuit and compensation magnetic field generate the sum of the magnetic field that circuit generates respectively.
Pass through the magnetic field detecting coil L in signal acquisition and controlling circuitpcThe corresponding voltage of acquisition magnetic field data in real time
Signal and with reference signal VrefCompare, output control compensation magnetic field generates circuit after error signal is modulated by PID controller
In IGBT switch, thus control compensation magnetic field generate circuit generate magnetic field size achieve the effect that square-topped pulse magnetic field.Its
Middle PID controller is as follows to the operational formula of error signal e (t):
Wherein, Tduty(t) it indicates to open width duration time, K in IGBT control signal each periodpIndicate error ratio
The example factor, KIIndicate the error intergal factor, KDIndicate error differential divisor, t1Indicate control initial time, t indicates current time.
Fig. 3 is the structural schematic diagram of terahertz electromagnetic wave generation system provided by the utility model；As shown in Figure 3, comprising:
The body portion formed is successively cascaded by electron gun 1, resonant cavity 4, collector 6, output window 7, and by electron gun magnet 2, arteries and veins
Rush the magnet system of the composition of magnet 3.
Hollow beam is emitted by gun cathode；Electron gun magnet is set to gun cathode periphery；Resonant cavity, even
It is connected to electron gun exit, the place of electronics note and electromagnetic field of high frequency interaction is provided；Square-topped pulse magnet, is set to resonant cavity
Outside provides amplitude square-topped pulse magnetic field required for note wave interaction, and electronics note is provided together with electron gun magnet
Magnetic field needed for compression；Collector is connected to the rear class of resonant cavity, the electronics note after collecting interaction；Output window, by generation
THz wave output.
The working principle of square-topped pulse Terahertz convolution pipe device is that pulse magnet connects associated components work shown in FIG. 1
Make to generate flat-top magnetic field, in the flat-top duration T of square-topped pulsefInitial time gun cathode launch hollow electronics
Note, electronics note under the collective effect of electron gun magnet and square-topped pulse magnet adiabatic compression to required design parameter.?
In resonant cavity, electronics note, with electromagnetic wave interaction, generates high frequency within the square-topped pulse duration that square-topped pulse magnet provides
THz wave.Electromagnetic wave is exported via output window, and the electronics after interaction is then collected pole capture.
Fig. 4 is square-topped pulse magnetic field provided by the utility model and THz wave Simulation of SAR power image waveform；As shown in figure 4, left
The ordinate on side indicates the intensity in square-topped pulse magnetic field, and the ordinate on the right indicates the power of electromagnetic wave.Wherein, in square-topped pulse
The magnetic field strength in magnetic field keeps the T of tesla's order of magnitudefPeriod, the corresponding terahertz electromagnetic wave generated is in TfIt is protected in period
Power is held as the output of the kW order of magnitude.Wherein, TfIt may be controlled to millisecond order of magnitude or more.
Square-topped pulse Terahertz convolution pipe device provided by the utility model and square-topped pulse magnetic field generation device, flat-top arteries and veins
The working magnet for rushing Terahertz gyrotron uses square-topped pulse magnet, can be in flat-top duration TfIt is interior to utilize highfield condition
Realize high frequency, the output of powerful THz wave.Square-topped pulse magnetic field generation technology then utilizes the compensation field circuit of uncoupling
The method for generating compensation magnetic field realizes square-topped pulse field waveform.
For further description square-topped pulse Terahertz convolution pipe device provided by the embodiment of the utility model and put down
The effect of smpa pulse magnetic field generation technology is now as follows by Examples detail:
Main field generates circuit: the capacitance of capacitor is 3.2mF, the inductance L of magnet aaFor 1.13mH, the resistance R of magnet aa
For 26.8m Ω (77K), line resistance Rext1For 60m Ω, continued flow resistance R1For 0.2 Ω, dc switch S1Connecting-disconnecting function is 20kV/
40kA。
It compensates magnetic field and generates circuit: battery voltage 771V, line resistance Rext2For 13.2m Ω, bucking coil inductance Lb
+LcFor 0.4mH, bucking coil resistance Rb+RcFor 3.8m Ω (77K), continued flow resistance R2For 13m Ω, IGBT switching group is by 5
The high-power IGBT of 1700V/3600A forms, and signal is adopted with collection control circuit controller using DSP28335.
Gyrotron uses the electron gun of 24kV/3A, and the transverse and longitudinal speed ratio of electronics note is 1.2-1.3, resonant cavity interlude
Internal diameter and length are respectively 3mm and 3mm.Gyrotron uses TE17 under the square-topped pulse magnetic field of 38T, and the work of 4 modes can produce
Raw frequency is 1THz or so, and power is 1kW or so, and pulsewidth reaches the THz wave of 3ms, such as the magnetic that Fig. 4 is square-topped pulse gyrotron
The simulation waveform of field and power.
In conclusion square-topped pulse Terahertz convolution pipe device provided by the utility model and square-topped pulse magnetic field generate skill
Art, the technology can be generated in square-topped pulse duration TfInterior maintenance constant amplitude and intensity reach the pulsed magnetic field of 36T or more
Work wave, gyrotron can be in square-topped pulse duration T under this field waveformfInterior generation pulsewidth reaches Millisecond or more, frequency
Rate reaches THz magnitude, and power reaches the electromagenetic wave radiation of kW magnitude.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of square-topped pulse magnetic field generation device characterized by comprising coaxial the first bucking coil, hollow magnet with
And second bucking coil；
The hollow magnet is coaxially located between first bucking coil and the second bucking coil, first bucking coil and
Second bucking coil around on the contrary, making mutual inductance between first bucking coil and hollow magnet and hollow magnet and the
Mutual inductance between two bucking coils is cancelled out each other；
The hollow magnet and the first power supply are composed in series the first discharge loop；
First bucking coil, the second bucking coil, IGBT switch are composed in series the second discharge loop with second source；
First power supply discharges to hollow magnet, generates main field, when discharging into for the first predetermined time, by between the control IGBT
Disconnected property turns on and off so that second source discharges to the first bucking coil and the second bucking coil, generates compensation magnetic field, the
Two predetermined times turned off the IGBT and stop discharging to the first bucking coil and the second bucking coil；The main field and compensation
Magnetic field superposition is at total magnetic field, and the duty ratio that the discontinuity of the IGBT turns on and off is according to the magnetic of total magnetic field in preset time period
Field intensity determines, to control the intensity size in the compensation magnetic field, so that the magnetic field of total magnetic field described in preset time period is kept
It is constant, square-topped pulse magnetic field is formed, the predetermined amount of time is from the first preset time to the period of the second preset time.
2. square-topped pulse magnetic field generation device according to claim 1, which is characterized in that further include: magnetic field detecting coil,
Comparator and PID controller；
The intensity of magnetic field detecting coil real-time detection total magnetic field；
The corresponding voltage signal of the intensity of the total magnetic field compared with reference voltage, is obtained error signal by the comparator；
The duty ratio that the PID controller is turned on and off according to the discontinuity that the error signal controls the IGBT.
3. square-topped pulse magnetic field generation device according to claim 1, which is characterized in that first power supply is capacitor
Power supply, first discharge loop further include: thyristor switch, the first continued flow resistance and the first freewheeling diode；
When the thyristor switch is opened, the capacitor power discharges to hollow magnet, and continues to pulsed discharge to complete；
After first continued flow resistance and the series connection of the first freewheeling diode, the both ends of the capacitor power are connected in parallel on, are used for
To hollow magnet afterflow when condenser voltage is reversed.
4. square-topped pulse magnetic field generation device according to claim 1, which is characterized in that the second source is battery
Power supply, second discharge loop further include: the second continued flow resistance and the second freewheeling diode；
After second continued flow resistance and the series connection of the second freewheeling diode, the both ends of the battery feed are connected in parallel on, are used for
IGBT lets out energy to the first bucking coil and the second bucking coil when turning off.
5. square-topped pulse magnetic field generation device according to claim 2, which is characterized in that the PID controller is according to institute
It states error signal and controls the duty ratio that the discontinuity of the IGBT turns on and off, fortune of the PID controller to error signal e (t)
It is as follows to calculate formula:
Wherein, Tduty(t) it indicates to open width duration time, K in IGBT control signal each periodpIndicate error rate because
Son, KIIndicate the error intergal factor, KDIndicate error differential divisor, t1Indicate control initial time, t indicates current time.
6. a kind of terahertz electromagnetic wave generation system characterized by comprising electron gun, resonant cavity such as require any one of 1 to 5
Square-topped pulse magnetic field generation device, collector and the output window；
The emission of cathode electronics of the electron gun is infused；
The resonant cavity is connected to electron gun exit；
The periphery of the resonant cavity is arranged in the square-topped pulse magnetic field generation device, and coaxial with the resonant cavity, described flat
Smpa pulse magnetic field generation device provides square-topped pulse magnetic field for resonant cavity, and the square-topped pulse magnetic field makes electronics injection pressure contracting
Electronics note inspires electromagnetic wave in resonant cavity, the electromagnetic wave from electronics infuse to obtain energy after it is defeated to output window direction
Out；The frequency of the electromagnetic wave exported if the square-topped pulse magnetic field strength reaches 36T or more within a preset period of time can reach
It is terahertz electromagnetic wave to 1THz or more；
The collector is connected to the rear class of resonant cavity, for the electronics note after collecting action；
The output window is connected to the rear class of collector, for the terahertz electromagnetic wave to be exported, the terahertz electromagnetic wave
Duration it is related to the time span of the preset time period, the power of the terahertz electromagnetic wave is the electromagnetism of kW magnitude
Wave radiation.
7. terahertz electromagnetic wave generation system according to claim 6, which is characterized in that the first compensating line snare exists
The outside of resonant cavity, the hollow magnet are covered in the outside of first bucking coil, and the second compensating line snare is described
The outside of hollow magnet.
8. terahertz electromagnetic wave generation system according to claim 6, which is characterized in that further include: electron gun magnet；
The electron gun magnet is located at the periphery of electron gun, for adjusting the Distribution of Magnetic Field in square-topped pulse magnetic field with compression of electronic
Note.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450410A (en) * | 2018-12-06 | 2019-03-08 | 华中科技大学 | A kind of square-topped pulse magnetic field generation device and terahertz electromagnetic wave generation system |
| CN111416544A (en) * | 2020-03-18 | 2020-07-14 | 华中科技大学 | Flat-top pulse high-intensity magnetic field generating device |
| CN112038873A (en) * | 2020-08-20 | 2020-12-04 | 华中科技大学 | Terahertz arbitrary waveform generation method and system |
-
2018
- 2018-12-06 CN CN201822049033.1U patent/CN209088906U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450410A (en) * | 2018-12-06 | 2019-03-08 | 华中科技大学 | A kind of square-topped pulse magnetic field generation device and terahertz electromagnetic wave generation system |
| CN109450410B (en) * | 2018-12-06 | 2024-05-14 | 华中科技大学 | Flat-top pulse magnetic field generating device and terahertz electromagnetic wave generating system |
| CN111416544A (en) * | 2020-03-18 | 2020-07-14 | 华中科技大学 | Flat-top pulse high-intensity magnetic field generating device |
| CN112038873A (en) * | 2020-08-20 | 2020-12-04 | 华中科技大学 | Terahertz arbitrary waveform generation method and system |
| CN112038873B (en) * | 2020-08-20 | 2021-12-03 | 华中科技大学 | Terahertz arbitrary waveform generation method and system |
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