CN115967376A - Bipolar pulse generator - Google Patents
Bipolar pulse generator Download PDFInfo
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- CN115967376A CN115967376A CN202211492129.XA CN202211492129A CN115967376A CN 115967376 A CN115967376 A CN 115967376A CN 202211492129 A CN202211492129 A CN 202211492129A CN 115967376 A CN115967376 A CN 115967376A
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Abstract
The invention discloses a bipolar pulse generating device, which has the following circuit topology: the A1 end of a voltage source VDC1 is connected with a switch S10 and a resistor Rc1 in series and then connected with the cathode of a diode D11; the drain electrode of the switch S10 is connected with the end A1, the source electrode is connected with the resistor Rc1, and the grid electrode is suspended; the cathode of the diode D1i is connected with the cathode of the diode D1 (i + 1) after being connected with the inductor L1i and the switch S1i in series; the cathode of the diode D1i is sequentially connected with the inductor L1i, the switch S1i 'and the load resistor RL in series and then is connected with the source electrode of the switch S2 i'; the anode of the diode D1i is grounded; the invention provides a modularized pulse generating device with flexibly adjustable output pulse amplitude, frequency and waveform, which can realize constant output pulse amplitude and controllable waveform.
Description
Technical Field
The invention relates to the field of pulses, in particular to a bipolar pulse generating device.
Background
In the field of pulse power technology research, main energy storage elements comprise capacitor energy storage and inductor energy storage, most pulse generators are capacitor energy storage at present and are mainly used for generating pulse voltage waveforms, and inductor energy storage is less used in pulse generators and is mainly used for generating pulse waveforms. Compared with a capacitive energy storage mode, inductive energy storage has the advantage of high energy storage density.
The pulse generator mainly adopts an inductive energy storage technology, so that pulses with flexibly adjustable current amplitude can be output, and the output current amplitude does not change along with the change of load characteristics. The pulse generating device has wide application in the field of modern science and technology, such as biomedical treatment, semiconductor test, superconducting test, plasma physics, controlled nuclear fusion, electromagnetic propulsion, a high-power laser with repeated pulses, a high-power radar, generation of strong current charged particle beams, strong pulse electromagnetic radiation and the like.
In the application fields, parameters such as pulse waveform, amplitude, frequency and the like are mostly required to be controllable, for example, in the biomedical field, parameters such as multi-pulse amplitude, frequency and waveform are required to realize quantitative full control, most of output waveforms are square waves, and the frequency is flexibly adjustable in a level from several Hz to thousands Hz. The output waveforms of the existing pulse generating devices are exponential decay waveforms, and flexible adjustment of pulse waveforms, such as square-wave pulse output, cannot be realized.
Disclosure of Invention
The invention aims to provide a bipolar pulse generating device, which has the following circuit topology:
note that two ends of the voltage source VDC1 are an A1 end and a B1 end, respectively, and two ends of the voltage source VDC2 are an A2 end and a B2 end, respectively.
The A1 end of the voltage source VDC1 is connected in series with the switch S10 and the resistor Rc1 and then connected with the cathode of the diode D11. The drain of the switch S10 is connected with the end A1, the source is connected with the resistor Rc1, and the grid is suspended.
The cathode of the diode D1i is connected in series with the inductor L1i and the switch S1i, and then connected to the cathode of the diode D1 (i + 1). i =1,2, \8230;, n-1.n is a positive integer;
the cathode of the diode D1i is connected with the source of the switch S2i 'after being sequentially connected with the inductor L1i, the switch S1i' and the load resistor RL in series.
The anode of the diode D1i is grounded.
The cathode of the diode D1n is connected with the inductor L1n and the switch S1n in series in sequence and then grounded.
The cathode of the diode D1n is connected with the inductor L1n, the switch S1n 'and the load resistor RL in series in sequence and then is connected with the source of the switch S2 n'.
The B1 terminal of the voltage source VDC1 is grounded.
The A2 end of the voltage source VDC2 is connected in series with the switch S20 and the resistor Rc2, and then connected with the cathode of the diode D11. The switch S20 has a drain connected to the A2 terminal, a source connected to the resistor Rc2, and a gate floating.
The cathode of the diode D2i is connected in series with the inductor L2i and the switch S2i, and then connected to the cathode of the diode D2 (i + 1).
The cathode of the diode D2i is sequentially connected with the inductor L2i and the drain of the switch S2i' in series. The gate of switch S2i' is floating.
The anode of the diode D2i is grounded.
The cathode of the diode D2n is connected with the inductor L2n and the switch S2n in series in sequence and then grounded.
The cathode of the diode D2n is sequentially connected with the inductor L2n and the drain of the switch S2n' in series. .
The B2 terminal of the voltage source VDC2 is grounded.
Further, the switch comprises a MOSFET switch.
Further, the drain of the MOSFET switch S1i is connected to the inductor L1i, the source is connected to the inductor L1 (i + 1), and the gate is floating. The drain electrode of the MOSFET switch S2i is connected with an inductor L2i, the source electrode is connected with an inductor L2 (i + 1), and the grid electrode is suspended
Further, when the pulse generating device is charged, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n are conducted, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230and a switch S2n' are disconnected, a voltage source VDC1 charges an inductor L11, an inductor L12, an inductor 8230, an inductor L1n is in series connection and flows to GND, a voltage source VDC2 charges an inductor L21, an inductor L22, an inductor 8230and an inductor L2n are in series connection and flows to GND.
Further, when the pulse generator discharges, the current flows to the load resistance RL through the switch S11', the switches S12' \ 8230, the switch S1n ', the switch S21', the switches S22 '\ 8230, the switch S2n' is turned on, the switch S11, the switch S12, \ 8230, the switch S1n, the switch S21, the switch S22, \8230, the switch S2n is turned off, the inductor L11, the inductor L12, \\8230, the inductor L1n, the inductor L21, the inductor L22, \8230, and the inductor L2 n. Current i flowing into load resistance RL RL ＝2ni DC 。i DC The charging current of any inductor.
Further, the pulse frequency is determined by the turn-on frequency of the switch. The pulse width is determined by the length of the on-time of the switch.
Further, the pulse generating device outputs exponentially decaying pulses in a manner that: in one discharging process, a switch S11, a switch S12, \ 8230, a switch S1n, a switch S21, a switch S22, \8230, the off time of the switch S2n is greater than tmax1, a switch S11', a switch S12' \ 8230, a switch S1n ', a switch S21', a switch S22 '\ 8230, and the on time of the switch S2n' is greater than tmax2.tmax1 and tmax2 are preset time thresholds.
Further, the pulse generating device outputs a step pulse, and the outputting step includes:
1) At the time t1-t2, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n which is off in a time delay delta t, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230and a switch S2n' which is on in a time delay delta t enable the rising edge of the pulse output by the pulse generating device to be in a step shape.
2) At time t3-t4, the switch S11, the switch S12, \ 8230, the switch S1n, the switch S21, the switch S22, \ 8230, the switch S2n are disconnected, the switch S11', the switch S12, \ 8230, the switch S1n', the switch S21', the switch S22, \\ 8230and the switch S2n' are conducted, so that the pulse amplitude output by the pulse generating device is 2ni DC 。i DC The charging current of any inductor.
3) At the time t5-t6, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n is conducted in a time delay delta t, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230and a switch S2n' are disconnected in a time delay delta t, so that the falling edge of the pulse output by the pulse generating device is in a step shape.
The technical effect of the invention is undoubted, and the invention provides the modularized pulse generating device with flexibly adjustable output pulse amplitude, frequency and waveform, which can realize constant output pulse amplitude and controllable waveform, wherein the waveform comprises square waves, step waves, exponential decay waves and the like.
The pulse amplitude output by the invention is flexible and adjustable, does not change along with the change of load characteristics, and can output pulses quantitatively.
The invention adopts the semiconductor switch to realize the full control of the parameters and the adjustable output frequency.
The invention adopts a modular design, can increase the number of modules according to requirements and realize larger pulse output.
The invention adopts the all-solid-state controllable switch to realize the output waveform control of the pulse, and can output square waves, step waves, exponential decay waves and the like.
The invention adopts inductance energy storage to realize adjustable pulse amplitude.
Each module of the invention comprises two switches, the load is isolated during charging, and the load is cut off after discharging, so that residual charge or voltage loaded on the load is prevented.
Drawings
Fig. 1 is a pulse generator topology.
Detailed Description
The present invention will be further described with reference to the following examples, but it should be understood that the scope of the subject matter described above is not limited to the following examples. Various substitutions and modifications can be made without departing from the technical idea of the invention and the scope of the invention according to the common technical knowledge and the conventional means in the field.
Example 1:
referring to fig. 1, the circuit topology of the bipolar pulse generating device is as follows:
the two ends of a voltage source VDC1 are respectively an A1 end and a B1 end, and the two ends of a voltage source VDC2 are respectively an A2 end and a B2 end.
The A1 end of the voltage source VDC1 is connected in series with the switch S10 and the resistor Rc1, and then connected with the cathode of the diode D11. The drain of the switch S10 is connected with the end A1, the source is connected with the resistor Rc1, and the grid is suspended.
The cathode of the diode D1i is connected in series with the inductor L1i and the switch S1i, and then connected to the cathode of the diode D1 (i + 1). i =1,2, \8230;, n-1.n =4.
The cathode of the diode D1i is connected with the source of the switch S2i 'after being sequentially connected with the inductor L1i, the switch S1i' and the load resistor RL in series.
The anode of the diode D1i is grounded.
The cathode of the diode D1n is connected with the inductor L1n and the switch S1n in series in sequence and then grounded.
The cathode of the diode D1n is connected with the inductor L1n, the switch S1n 'and the load resistor RL in series in sequence and then is connected with the source of the switch S2 n'.
The B1 terminal of the voltage source VDC1 is grounded.
The terminal A2 of the voltage source VDC2 is connected in series with the switch S20 and the resistor Rc2 and then connected to the cathode of the diode D11. The switch S20 has a drain connected to the A2 terminal, a source connected to the resistor Rc2, and a gate floating.
The cathode of the diode D2i is connected in series with the inductor L2i and the switch S2i, and then connected to the cathode of the diode D2 (i + 1).
The cathode of the diode D2i is sequentially connected with the inductor L2i and the drain of the switch S2i' in series. The gate of switch S2i' is floating.
The anode of the diode D2i is grounded.
The cathode of the diode D2n is connected with the inductor L2n and the switch S2n in series in sequence and then grounded.
The cathode of the diode D2n is sequentially connected with the inductor L2n and the drain of the switch S2n' in series. .
The B2 terminal of the voltage source VDC2 is connected to ground.
The switch comprises a MOSFET switch.
The drain of the MOSFET switch S1i is connected with the inductor L1i, the source is connected with the inductor L1 (i + 1), and the grid is suspended. The drain electrode of the MOSFET switch S2i is connected with an inductor L2i, the source electrode is connected with an inductor L2 (i + 1), and the grid electrode is suspended
When the pulse generating device is charged, a switch S11, a switch S12, a switch S8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n are conducted, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230, a switch S2n' are disconnected, a voltage source VDC1 charges an inductor L11, an inductor L12, an inductor L8230, an inductor L1n is in series connection and flows to GND, a voltage source VDC2 charges an inductor L21, an inductor L22, an inductor L8230, and an inductor L2n is in series connection and flows to GND.
When the pulse generating device discharges, the switch S11', the switches S12' and 8230, the switch S1n ', the switch S21', the switches S22 'and 8230, the switch S2n' is conducted, the switch S11, the switch S12 and the switch 8230are conducted, the switch S1n, the switch S21, the switch S22 and the switch 8230are conducted, the switch S2n is disconnected, and the inductor L11 are connectedL12, \ 8230, inductance L1n, inductance L21, inductance L22, \ 8230, and inductance L2n, respectively. Current i flowing into load resistance RL RL ＝2ni DC 。i DC The charging current of any inductor.
The pulse frequency is determined by the on frequency of the switch. The pulse width is determined by the length of the on-time of the switch.
The pulse generating device outputs exponential decay pulses in the output mode: in one discharging process, a switch S11, a switch S12, \ 8230, a switch S1n, a switch S21, a switch S22, \8230, the off time of the switch S2n is greater than tmax1, a switch S11', a switch S12' \ 8230, a switch S1n ', a switch S21', a switch S22 '\ 8230, and the on time of the switch S2n' is greater than tmax2.tmax1 and tmax2 are preset time thresholds.
The pulse generating device outputs step-type pulses, and the output step comprises:
1) At time t1-t2, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n is turned off after time delta t, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230and a switch S2n' are turned on after time delta t, so that the rising edge of the pulse output by the pulse generating device is in a step shape.
2) At time t3-t4, the switch S11, the switch S12, \ 8230, the switch S1n, the switch S21, the switch S22, \ 8230, the switch S2n are disconnected, the switch S11', the switch S12, \ 8230, the switch S1n', the switch S21', the switch S22, \\ 8230and the switch S2n' are conducted, so that the pulse amplitude output by the pulse generating device is 2ni DC 。i DC The charging current of any inductor.
3) At the time t5-t6, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n is conducted in a time delay delta t, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230and a switch S2n' are disconnected in a time delay delta t, so that the falling edge of the pulse output by the pulse generating device is in a step shape.
Example 2:
the control method of the bipolar pulse generator comprises the following steps:
the basic working principle of the pulse generating device is 'series charging and parallel discharging'. The circuit mainly comprises 2 working modes, an A charging mode and a B discharging mode.
Charge mode A
At time 0-t1, S1i, S2i (i =1,2,3, 4) are on, S1i ', S2i' (i =1,2,3, 4) are off, the circuit is in a charging mode, the dc voltage source VDC1 is charged in series to the inductance L1i (i =1,2,3, 4) through the switch S1i (i =1,2,3, 4) and flows to GND, and the dc voltage source VDC2 is charged in series to the inductance L2i (i =1,2,3, 4) through the switch S2i (i =1,2,3, 4) and flows to GND.
B discharge mode
I) At time t2-t3, S1i, S2i (i =1,2,3, 4) are off, S1i ', S2i' (i =1,2,3, 4) are on, the circuit is in discharge mode, and the pulse width of the pulse is t3-t2.
II) secondly, the conduction delay time of each switch can be controlled, and the output of the step-type pulse waveform is realized.
At time t4-t5, switches S1i, S2i (i =1,2,3, 4) are turned off with a delay Δ t, and S1i ', S2i' (i =1,2,3, 4) are turned on with a delay Δ t, so that the rising edge of the output pulse is stepped.
At time t5-t6, switches S1i and S2i (i =1,2,3, 4) are all off, and S1i 'and S2i' (i =1,2,3, 4) are all on, and at this time, the output pulse amplitude is at maximum i RL ＝4i DC 。
At time t6-t7, the switches S1i, S2i (i =1,2,3, 4) are turned on with a delay Δ t, and S1i ', S2i' (i =1,2,3, 4) are turned off with a delay Δ t, so that the falling edge of the output pulse is stepped.
III) finally, the on-off time of the switch can be controlled, and exponential decay waves are realized.
At time t8-t9, S1i, S2i (i =1,2,3, 4) are turned off for a longer time, and S1i ', S2i' (i =1,2,3, 4) are also turned on for a longer time, and as time increases, the inductive stored energy is gradually consumed on the load RL, i.e., the pulse gradually decreases, and finally, an exponentially decaying pulse waveform is formed.
Example 3:
the circuit topology of the bipolar pulse generating device is as follows:
the two ends of a voltage source VDC1 are respectively the A1 end and the B1 end, and the two ends of a voltage source VDC2 are respectively the A2 end and the B2 end.
The A1 end of a voltage source VDC1 is connected with a switch S10 and a resistor Rc1 in series and then connected with the cathode of a diode D11; the drain of the switch S10 is connected with the end A1, the source is connected with the resistor Rc1, and the grid is suspended.
The cathode of the diode D1i is connected with the cathode of the diode D1 (i + 1) after being connected with the inductor L1i and the switch S1i in series; i =1,2, \8230;, n-1; n is a positive integer;
the cathode of the diode D1i is sequentially connected with the inductor L1i, the switch S1i 'and the load resistor RL in series and then is connected with the source electrode of the switch S2 i';
the anode of the diode D1i is grounded;
the cathode of the diode D1n is sequentially connected with the inductor L1n and the switch S1n in series and then grounded;
the cathode of the diode D1n is sequentially connected with the inductor L1n, the switch S1n 'and the load resistor RL in series and then is connected with the source electrode of the switch S2 n';
the B1 end of a voltage source VDC1 is grounded;
the A2 end of a voltage source VDC2 is connected with the cathode of a diode D11 after being connected with a switch S20 and a resistor Rc2 in series; the drain electrode of the switch S20 is connected with the end A2, the source electrode is connected with the resistor Rc2, and the grid electrode is suspended;
the cathode of the diode D2i is connected with the inductor L2i and the switch S2i in series and then is connected with the cathode of the diode D2 (i + 1);
the cathode of the diode D2i is sequentially connected with the inductor L2i and the drain of the switch S2i' in series; the grid of the switch S2i' is suspended;
the anode of the diode D2i is grounded;
the cathode of the diode D2n is connected with the inductor L2n and the switch S2n in series in sequence and then grounded;
the cathode of the diode D2n is sequentially connected with the inductor L2n and the drain of the switch S2n' in series; (ii) a
The B2 terminal of the voltage source VDC2 is connected to ground.
Example 4:
a bipolar pulse generating device, see example 3 for the main content, wherein the switch comprises a MOSFET switch.
Example 5:
the main content of the bipolar pulse generation device is shown in embodiment 3, wherein the drain electrode of the MOSFET switch S1i is connected with an inductor L1i, the source electrode is connected with an inductor L1 (i + 1), and the gate electrode is suspended; the drain electrode of the MOSFET switch S2i is connected with an inductor L2i, the source electrode is connected with an inductor L2 (i + 1), and the grid electrode is suspended
Example 6:
the bipolar pulse generating device mainly comprises an embodiment 3, wherein when the pulse generating device is charged, a switch S11, a switch S12, a switch S8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n is conducted, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230, a switch S2n' is disconnected, a voltage source VDC1 charges an inductor L11, an inductor L12, an inductor 8230, an inductor L1n in series and flows to GND, a voltage source VDC2 charges an inductor L21, an inductor L22, an inductor 8230, and an inductor L2n in series and flows to GND.
Example 7:
a bipolar pulse generator mainly includes an embodiment 3, wherein when the pulse generator discharges, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230, a switch S2n' is conducted, the switch S11, the switch S12, the switch 8230, the switch S1n, the switch S21, the switch S22, the switch 8230, the switch S2n is disconnected, an inductor L11, an inductor L12, the switch 8230, the inductor L1n, the inductor L21, the inductor L22, the inductor L8230, and a current flow of the inductor L2n to a load resistance RL; current i flowing into load resistor RL RL ＝2ni DC ；i DC The charging current of any inductor.
Example 8:
a bipolar pulse generator, the main content of which is shown in embodiment 3, wherein the pulse frequency is determined by the conducting frequency of the switch; the pulse width is determined by the length of the on-time of the switch.
Example 9:
the main content of the bipolar pulse generator is shown in embodiment 3, wherein the pulse generator outputs exponentially decaying pulses in a manner that: in one discharging process, a switch S11, a switch S12, a switch S8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n with the off-time larger than tmax1, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230, and a switch S2n' with the on-time larger than tmax2; tmax1 and tmax2 are preset time thresholds.
Example 10:
the main content of the bipolar pulse generator is shown in embodiment 3, wherein the pulse generator outputs a step-like pulse, and the output step includes:
1) At the time t1-t2, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230and a switch S2n' are switched on by delaying the time delta t, so that the rising edge of the pulse output by the pulse generating device is in a step shape;
2) At time t3-t4, the switch S11, the switch S12, \ 8230, the switch S1n, the switch S21, the switch S22, \ 8230, the switch S2n are disconnected, the switch S11', the switch S12, \ 8230, the switch S1n', the switch S21', the switch S22, \\ 8230and the switch S2n' are conducted, so that the pulse amplitude output by the pulse generating device is 2ni DC ；i DC A charging current for any inductor;
3) At time t5-t6, the switch S11, the switch S12, \ 8230, the switch S1n, the switch S21, the switch S22, \ 8230, the switch S2n is conducted with delay time Deltat, the switch S11', the switch S12, \ 8230, the switch S1n', the switch S21', the switch S22, \ 8230, and the switch S2n' is disconnected with delay time Deltat, so that the falling edge of the pulse output by the pulse generating device is in a step shape.
Claims (8)
1. The bipolar pulse generating device is characterized in that the circuit topology is as follows:
note that two ends of the voltage source VDC1 are the A1 end and the B1 end, respectively, and two ends of the voltage source VDC2 are the A2 end and the B2 end, respectively.
The A1 end of a voltage source VDC1 is connected with a switch S10 and a resistor Rc1 in series and then connected with the cathode of a diode D11; the drain of the switch S10 is connected with the end A1, the source is connected with the resistor Rc1, and the grid is suspended.
The cathode of the diode D1i is connected with the cathode of the diode D1 (i + 1) after being connected with the inductor L1i and the switch S1i in series; i =1,2, \8230;, n-1; n is a positive integer;
the cathode of the diode D1i is sequentially connected with the inductor L1i, the switch S1i 'and the load resistor RL in series and then is connected with the source electrode of the switch S2 i';
the anode of the diode D1i is grounded;
the cathode of the diode D1n is connected with the inductor L1n and the switch S1n in series in sequence and then grounded;
the cathode of the diode D1n is sequentially connected with the inductor L1n, the switch S1n 'and the load resistor RL in series and then is connected with the source electrode of the switch S2 n';
the B1 end of a voltage source VDC1 is grounded;
the A2 end of a voltage source VDC2 is connected with a switch S20 and a resistor Rc2 in series and then connected with the cathode of a diode D11; the drain electrode of the switch S20 is connected with the end A2, the source electrode is connected with the resistor Rc2, and the grid electrode is suspended;
the cathode of the diode D2i is connected with the inductor L2i and the switch S2i in series and then is connected with the cathode of the diode D2 (i + 1);
the cathode of the diode D2i is sequentially connected with the inductor L2i and the drain of the switch S2i' in series; the grid of the switch S2i' is suspended;
the anode of the diode D2i is grounded;
the cathode of the diode D2n is sequentially connected with the inductor L2n and the switch S2n in series and then grounded;
the cathode of the diode D2n is sequentially connected with the inductor L2n and the drain of the switch S2n' in series; (ii) a
The B2 terminal of the voltage source VDC2 is connected to ground.
2. The bipolar pulse generating apparatus according to claim 1, wherein: the switch comprises a MOSFET switch.
3. The bipolar pulse generating device according to claim 2, wherein: the drain electrode of the MOSFET switch S1i is connected with an inductor L1i, the source electrode is connected with an inductor L1 (i + 1), and the grid electrode is suspended; the drain electrode of the MOSFET switch S2i is connected with the inductor L2i, the source electrode is connected with the inductor L2 (i + 1), and the grid electrode is suspended.
4. The bipolar pulse generating device according to claim 1, wherein: when the pulse generator is charged, a switch S11, a switch S12, \ 8230, a switch S1n, a switch S21, a switch S22, \8230, a switch S2n are conducted, a switch S11', a switch S12, \ 8230, a switch S1n', a switch S21', a switch S22, \\ 8230, a switch S2n' are disconnected, a voltage source VDC1 charges an inductor L11 and an inductor L12, \\8230, an inductor L1n is in series connection and flows to GND, a voltage source VDC2 charges an inductor L21 and an inductor L22, \\8230, and an inductor L2n charges in series connection and flows to GND.
5. The bipolar pulse generating device according to claim 1, wherein: when the pulse generating device discharges, a switch S11', a switch S12', a switch S8230, a switch S1n ', a switch S21', a switch S22', a switch 8230, a switch S2n' are conducted, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n are disconnected, an inductor L11, an inductor L12, a switch 8230, an inductor L1n, an inductor L21, an inductor L22, a switch 8230, and the current of the inductor L2n flows to a load resistance RL; current i flowing into load resistor RL RL ＝2ni DC ；i DC The charging current of any inductor.
6. The bipolar pulse generating device according to claim 1, wherein: the pulse frequency is determined by the conducting frequency of the switch; the pulse width is determined by the length of the on-time of the switch.
7. The bipolar pulse generating device according to claim 6, wherein: the pulse generating device outputs exponential decay pulses in the output mode: in the one-time discharging process, a switch S11, a switch S12, \ 8230, a switch S1n, a switch S21, a switch S22, \8230, the off time of the switch S2n is greater than tmax1, a switch S11', a switch S12', \ 8230, a switch S1n ', a switch S21', a switch S22', \ 8230, and the on time of the switch S2n' is greater than tmax2; tmax1 and tmax2 are preset time thresholds.
8. The bipolar pulse generating device of claim 6, wherein: the pulse generating device outputs step-type pulses, and the output step comprises the following steps:
1) At the time t1-t2, a switch S11, a switch S12, a switch 8230, a switch S1n, a switch S21, a switch S22, a switch 8230, a switch S2n is turned off after the time delta t is delayed, a switch S11', a switch S12', a switch 8230, a switch S1n ', a switch S21', a switch S22', a switch 8230, and a switch S2n' is turned on after the time delta t is delayed, so that the rising edge of the pulse output by the pulse generating device is in a step shape;
2) At the time of t3-t4, the switch S11, the switch S12, the switch 8230, the switch S1n, the switch S21, the switch S22, the switch 8230, the switch S2n are disconnected, the switch S11', the switch S12', the switch 8230, the switch S1n ', the switch S21', the switch S22', the switch 8230and the switch S2n' are conducted, so that the pulse amplitude output by the pulse generating device is 2ni DC ；i DC A charging current for any inductor;
3) At time t5-t6, the switch S11, the switch S12, \ 8230, the switch S1n, the switch S21, the switch S22, \ 8230, the switch S2n is conducted with delay time Deltat, the switch S11', the switch S12, \ 8230, the switch S1n', the switch S21', the switch S22, \ 8230, and the switch S2n' is disconnected with delay time Deltat, so that the falling edge of the pulse output by the pulse generating device is in a step shape.
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