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Title: Pulse shaping with transmission lines

Abstract

A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.

Inventors:
 [1]
  1. (Oakland, CA)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
866263
Patent Number(s):
US 4667161
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pulse; shaping; transmission; lines; method; apparatus; forming; shaped; voltage; pulses; passive; reflection; line; nonuniform; impedance; reflecting; varies; length; accordance; desired; shape; input; transmitted; reflected; produced; removal; means; load; light; activated; photoconductive; switches; silicon; utilized; shaper; drive; pockels; cell; produce; optical; optical pulse; shaped optical; voltage pulse; pulse shape; voltage pulses; optical pulses; transmission lines; transmission line; desired shape; input pulse; pockels cell; removal means; pulse shaper; pulse shaping; reflected pulse; line varies; forming shaped; light activated; /327/333/

Citation Formats

Wilcox, Russell B. Pulse shaping with transmission lines. United States: N. p., 1987. Web.
Wilcox, Russell B. Pulse shaping with transmission lines. United States.
Wilcox, Russell B. Thu . "Pulse shaping with transmission lines". United States. doi:. https://www.osti.gov/servlets/purl/866263.
@article{osti_866263,
title = {Pulse shaping with transmission lines},
author = {Wilcox, Russell B.},
abstractNote = {A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1987},
month = {Thu Jan 01 00:00:00 EST 1987}
}

Patent:

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  • A method and apparatus for forming shaped voltage pulses uses passive reflection from a transmission line with nonuniform impedance. The impedance of the reflecting line varies with length in accordance with the desired pulse shape. A high voltage input pulse is transmitted to the reflecting line. A reflected pulse is produced having the desired shape and is transmitted by pulse removal means to a load. Light activated photoconductive switches made of silicon can be utilized. The pulse shaper can be used to drive a Pockels cell to produce shaped optical pulses.
  • This patent describes an apparatus for forming a voltage pulse of a desired shape, comprising: means for generating an input pulse; a reflecting transmission line connected to the means for generating an input pulse, the reflecting transmission line having an impedance which varies with length to produce a reflected pulse having a desired pulse shape; and pulse removal means connected to the reflecting transmission line for transmitting a shaped reflected pulse to a load. The means for generating an input pulse and pulse removal means comprise: a first and second switch in a normally nonconducting state; a first transmission linemore » connected between the first and second switches; the first transmission line being connected to the reflecting transmission line through the first switch; and the first transmission line being connected to a load through the second switch.« less
  • Apparatus and method for producing a sequence of radiation pulses with a pulse envelope of time variation which is controllable by an external electromagnetic signal applied to an active medium or by a sectored reflector, through which the radiation passes.
  • An apparatus and method are described for producing a sequence of radiation pulses with a pulse envelope of time variation which is controllable by an external electromagnetic signal applied to an active medium or by a sectored reflector, through which the radiation passes.