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High-amplitude high-repetition-frequency fast pulse generation circuit based on avalanche transistor

A technology for generating circuits and high amplitudes. It is used in electrical pulse generator circuits and semiconductor devices with avalanche effect to generate pulses. It can solve the problems of long switching recovery time and difficulty in generating high-frequency pulses, and achieve good insulation. capacity, improved shunt consistency, and the effect of improving flow capacity

Pending Publication Date: 2021-01-01
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sub-nanosecond pulse sources using gas switches can generate high-amplitude sub-nanosecond pulses, but high repetition rate pulses are difficult to generate due to the long switch recovery time

Method used

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  • High-amplitude high-repetition-frequency fast pulse generation circuit based on avalanche transistor
  • High-amplitude high-repetition-frequency fast pulse generation circuit based on avalanche transistor
  • High-amplitude high-repetition-frequency fast pulse generation circuit based on avalanche transistor

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Experimental program
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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] see figure 1 , the present invention includes a Marx circuit composed of several stages of charging capacitors, each stage of charging capacitors is connected in parallel with two sets of magnetic bead equivalent circuits, each stage of charging capacitors and the magnetic bead equivalent circuit is provided with a fast switch, and the fast switch and the magnetic bead equivalent circuit An isolation resistor is arranged between them, and the fast switch is controlled by a trigger circuit, which is used to generate a narrow pulse width trigger signal, and the fast switch adopts an avalanche triode. The charging capacitor and the corresponding switch together form a switch-capacitor unit structure, and all the switch-capacitor unit structures are arranged in parallel.

[0023] The fast switch expands the pulse flow path by connecting capacitors in parallel and a...

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Abstract

The invention discloses a high-amplitude high-repetition-frequency fast pulse generation circuit based on an avalanche transistor, and the circuit mainly comprises an isolation device, charging capacitors and a fast switch, the whole circuit charges the charging capacitors in parallel through the isolation device, and the charging capacitors are connected in series to discharge to generate high-amplitude pulses after the switch is switched on; the isolation device can effectively isolate high-amplitude pulses; the circuit provided by the invention has the characteristics of high nanosecond / sub-nanosecond pulse isolation, strong insulation capability, high charging speed and the like, and is particularly suitable for the design of advanced Marx circuits to generate nanosecond / sub-nanosecondpulses with higher amplitude. The isolation circuit combining magnetic beads and the resistor can meet the requirements of pulse isolation and charging speed, and meets the requirement of generatinghigh-amplitude and high-repetition-frequency nanosecond / sub-nanosecond pulses.

Description

technical field [0001] The invention relates to the field of pulse generation circuits, in particular to an avalanche tube-based high-amplitude, high-repetition-frequency fast pulse generation circuit. Background technique [0002] High-amplitude high-repetition-frequency nanosecond / sub-nanosecond pulses are widely used in ultra-wideband radar, laser physics, discharge plasma and other fields due to their extremely short rise time and duration, and wide spectrum range; especially high-amplitude Nanosecond / sub-nanosecond pulses have higher peak power, and high repetition frequency nanosecond / sub-nanosecond pulses have higher average power, which is easier to meet the needs of related research and applications. Therefore, it is necessary to design and develop a nanosecond / subnanosecond pulse generation circuit with high amplitude and high repetition frequency characteristics. [0003] The fast switches used in the current commonly used nanosecond / sub-nanosecond pulse generati...

Claims

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Application Information

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IPC IPC(8): H03K3/335
CPCH03K3/335
Inventor 谢彦召高铭翔仇杨鑫王思琦王绍飞
Owner XI AN JIAOTONG UNIV
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