Investigation of a compact pulse modulator

yin yi; liu jin-liang; zhong hui-huang; yang jian-hua; feng jia-huai

Volume 20 Issue 02

Feb. 2008

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Article Navigation > High Power Laser and Particle Beams > 2008 > 20(02): 0-

wang guizhen, bai xiaoyan, guo xiaoqiang, et al. Transient radiation effects of CMOS circuits with different pulse widths[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

yin yi, liu jin-liang, zhong hui-huang, et al. Investigation of a compact pulse modulator[J]. High Power Laser and Particle Beams, 2008, 20.

wang guizhen, bai xiaoyan, guo xiaoqiang, et al. Transient radiation effects of CMOS circuits with different pulse widths[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

yin yi, liu jin-liang, zhong hui-huang, et al. Investigation of a compact pulse modulator[J]. High Power Laser and Particle Beams, 2008, 20.

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Investigation of a compact pulse modulator

1.
College of Optoelectric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Publish Date: 2008-02-15

Abstract

Abstract

A high power pulse modulator is presented. It is made up of capacitors, a trigger switch, an air core transformer, a water dielectric pulse forming line（PFL）, a hydrogen switch, and a field-emission vacuum diode. The circuit simulation saftware Pspice was used to calculate the diode voltage, diode current and charging voltage of PFL. The static electric field of the PFL and switch is analyzed. When the hydrogen switch breakdown voltage was 520 kV, a 60 ns pulse width and 230 kV, 30 kA pulse was obtained on the field-emission diode. The rise times values of diode voltage with different gases such as H2, N2, SF6 in man swithch have been compared.It is concluded that hydrogen switch can reduce the rise time of diode voltage obviously. The results are in agreement with theory etical analyses
- hydrogen switch,
- pulse forming line,
- pulse modulator,
- rise time,
- field-emission vacuum diode

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