Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency

A pulse generator and ultra-wide spectrum technology, applied in the direction of electric pulse generator circuits, etc., can solve the problems of difficulty in achieving both repetition frequency and pulse width, low energy efficiency, etc., to reduce reverse pumping inductance, reduce series connection The number of stages, the effect of increasing the output capacity

Active Publication Date: 2012-10-17
NORTHWEST INST OF NUCLEAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The output voltage is 120kV on a 125Ω load, the pulse width is 5~6ns, the highest repetition frequency is 1kHz, and the system energy efficiency is lower than 10%.
[0009] The curre

Method used

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  • Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency
  • Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency
  • Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] The 100kHz ultra-wide spectrum pulse generator based on SOS in this embodiment is composed of a single module; the components of the single module are all placed on a copper substrate covered with FR-4 insulating material layer to form a layer structure;

[0026] See figure 2 , image 3 , The center of the single module is a cylindrical structure 13; the outside of the cylindrical structure 13 is an annular box-like structure 11, both of which are made of copper, and both are coaxial; the annular box-like structure 11 is evenly distributed with 8 small copper columns in the circumferential direction 10; The ring-shaped box structure 11 is equipped with a ring-shaped transformer core 12; the outermost circumference of the single module is evenly distributed with 4 groups of primary low-voltage fast pulse generating units composed of primary energy storage capacitor 7, MOSFET8 and trigger 9; primary storage The energy capacitor 7 is 150nF; in the primary low...

Example Embodiment

[0029] Example 2

[0030] A 100kHz ultra-wide spectrum pulse generator based on SOS, which is composed of 10 identical single modules in series; the components of each single module are covered with FR-6 insulating material layer on the steel substrate to form a layer structure;

[0031] See figure 2 , image 3 , The center of the single module is a cylindrical structure 13; the outside of the cylindrical structure 13 is a ring-shaped box-shaped structure 11, both of which are made of steel, and both are coaxial; the ring-shaped box-shaped structure 11 is evenly distributed on the outer circumference of 16 small steel materials Column 10; ring-shaped box-like structure 11 is equipped with a ring-shaped transformer core 12; the outermost circumference of a single module is evenly distributed in the outer circumference of 6 groups of primary low-voltage fast pulse generating units composed of primary energy storage capacitor 7, MOSFET8 and trigger 9; The energy storage capacitor 7 is...

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Abstract

The invention discloses a semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency, and belongs to the technical field of pulse power. The pulse generator comprises a charging power supply, a primary low-voltage quick pulse generation unit, a magnetic saturation linear transformer, a pumping capacitor, an SOS and a load in sequence. A plurality of primary low-voltage quick pulse generation units are uniformly arranged at the periphery of each single module and thus the primary current output capacity is increased. A trigger controls the on and off of a metal oxide semiconductor field effect transistor (MOSFET) to generate scores of ns to hundreds of ns pulse with a repeated frequency of 100kHz. The magnetic saturation linear transformer is formed by connecting a plurality of single modules in series. On one hand, the output voltage can be increased by increasing the series number of the single module; on the other hand, after the transformer core is saturated, the secondary side is a coaxial squirrel cage structure, the inductance of a reversed pump is reduced, the time of a reversed current pump can be shortened, an SOS quickly cuts off current, and a high-voltage ultra-wide spectrum pulse is generated in the load. A mismatching charging mode from a primary energy storage large capacitance to a secondary pump small capacitance is used to obtain a high voltage on a pumping capacitor; and on the other hand, under the same target voltage, the series number of the single module is reduced, the inductance of the reversed pump is reduced, and 100kHz ultra-wide spectrum pulse generation is promoted.

Description

technical field [0001] The invention belongs to the technical field of pulse power, and relates to a repetition frequency high-power ultra-wide spectrum pulse generator, in particular to a 100 kHz ultra-wide spectrum pulse generator based on SOS (Semiconductor Opening Switch). Background technique [0002] Ultra-broad spectrum pulse refers to a high-voltage electrical pulse with a leading time of less than 1-2 nanoseconds and a relative bandwidth of more than 25%. Its spectrum can range from tens of MHz to upper GHz. High repetition rate ultra-wide spectrum pulse (repetition frequency: tens of kHz to hundreds of kHz; pulse width: sub ns to several ns) has broad application prospects in electronic countermeasures, biomedicine, plasma generation and other fields, generating high repetition rate The key to ultra-broadband pulses lies in the generation of high-voltage short pulses with fast pulse fronts. [0003] Although the ultra-broadband pulse source with gas switch as the...

Claims

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Application Information

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IPC IPC(8): H03K3/02
Inventor 苏建仓王刚丁臻捷袁雪林范菊平潘亚峰浩庆松方旭胡龙
Owner NORTHWEST INST OF NUCLEAR TECH
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