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Blumlein-type pulse forming system with thin-film capacitors triggered by square waves

A film capacitor and pulse technology, applied in the fields of generating electric pulses, pulse generation, pulse technology, etc., can solve the problems of reducing inductance, square wave pulse difficulty, etc., and achieve the effect of stable waveform amplitude, low jitter, and small environmental impact.

Active Publication Date: 2013-08-28
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the long-time and life-span problems of ceramic capacitors in the existing Blumlein type pulse forming system under repeated frequency working conditions. The square wave pulse is very difficult. Now an improved film capacitor is proposed, with a capacitance value of 0.8-2nF. At the same time, the copper electrode connecting piece is used to replace the traditional spiral inductor to reduce the inductance. Finally, the output pulse width of the Blumlein pulse forming system is realized. 100-200ns

Method used

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  • Blumlein-type pulse forming system with thin-film capacitors triggered by square waves
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  • Blumlein-type pulse forming system with thin-film capacitors triggered by square waves

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specific Embodiment

[0025] A square wave trigger film capacitor Blumlein pulse forming system with an output voltage of 20kV and a pulse width of 160ns was made, and the characteristic impedance of the Blumlein system was 14Ω.

[0026] The low capacitance, low inductance film capacitor capacity is 1.5nF, and the electrode connecting piece is 60mm long, 48mm wide, and 2mm thick. The hole diameter of the through hole on the copper electrode connecting piece is 7mm, the distance between the two holes fixed to the same capacitor is 30mm, and the through hole is 9mm away from the edge of the electrode connecting piece.

[0027] According to the calculation, the inductance of the electrode connecting piece of each level is 52nH, and the internal inductance of the capacitor is 20nH; the impedance of the pulse forming network is calculated to be z~7Ω, and the contribution of each level of pulse forming network to the pulse width is 20ns. The pulse width of 160ns requires a pulse forming network The number of ...

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Abstract

The invention discloses a Blumlein-type pulse forming system with thin-film capacitors triggered by square waves. The pulse forming system comprises a Blumlein-type pulse forming network, a square wave trigger, a main switch and a load, wherein the main switch is used for connecting the Blumlein-type pulse forming network with the square wave trigger; the load is connected to the output terminal of the Blumlein-type pulse forming network; the thin-film capacitor with the capacitance value of 0.8 to 2nF is adopted in each stage in the Blumlein-type pulse forming network; the output terminal of each thin-film capacitor is output fixedly by connecting a wide electrode with three screws; and the square wave trigger comprises an energy-stored pulse forming line, a voltage equalizing circuit and a low shaking switch. By utilizing the thin-film capacitors with the low capacitance values, the pulse forming system has the advantages of being good in impact resistance, excellent in electrical performance, wide in working temperature range, very small in influence on self-performance caused by the environment, long in service life and the like.

Description

Technical field [0001] The invention relates to the field of pulse formation, in particular to a square-wave triggered thin-film capacitor Blumlein type pulse-forming system, which uses an improved design of low-capacitance thin-film capacitors instead of ceramic capacitors. Background technique [0002] With the continuous development of pulse power technology, miniaturization, long life and modularization are the inevitable trends in the development of high-power pulse power sources. However, high-power pulse sources, which are key components of high-power microwave sources, currently have problems with large volumes. Among them, the large size of the pulse forming system is an urgent problem; only the miniaturization of the pulse forming system can truly In a sense, the miniaturization of the high-power pulse source is realized. Generally, the miniaturization design of the pulse forming system includes the miniaturization of the pulse forming line and the trigger system. The...

Claims

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Application Information

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IPC IPC(8): H03K3/013
Inventor 秦风宋法伦甘延青龚海涛金晓李详伟
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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