Frequency and bandwidth agile pulser for use in wideband applications

J Scott Tyo, Michael C. Skipper, Michael D. Abdalla, Samuel P. Romero, Brett Cockreham

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have developed an architecture to produce a wideband pulser that is tunable in the important parameters of pulsewidth, bandwidth, and center frequency. The pulser is based on a parallel plate Blumlein pulse-forming network (PFN) with a movable center (charge) conductor. When the center conductor is displaced from the ideal Blumlein position, the balance in the PFN is lost, resulting in a slightly ringing waveform that can be tuned. By selecting the amount of ringing, the output bandwidth of the PFN can be adjusted. Furthermore, by simply sliding the center conductor out of the PFN, the effective electrical length can be adjusted, allowing the fundamental period of the ringing waveform to be altered, thereby changing the center frequency of the output waveform. Our pulser is designed to operate in the range of 300 MHz to 2 GHz, but the architecture is scalable outside this range. In this paper, we present design and simulation results, low-voltage tests, and preliminary high-voltage (15-kV) data that is obtained with a pressurized gas trigatron designed specifically for this test fixture. The pulser is being designed for laboratory use in testing the effects of interaction of high-intensity wideband electromagnetic fields with small-scale electrical and biological systems.

Original languageEnglish (US)
Pages (from-to)1925-1931
Number of pages7
JournalIEEE Transactions on Plasma Science
Volume32
Issue number5 I
DOIs
StatePublished - Oct 2004
Externally publishedYes

Fingerprint

broadband
bandwidth
waveforms
conductors
pulses
fixtures
output
parallel plates
low voltage
sliding
high voltages
electromagnetic fields
gases
simulation
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Frequency and bandwidth agile pulser for use in wideband applications. / Tyo, J Scott; Skipper, Michael C.; Abdalla, Michael D.; Romero, Samuel P.; Cockreham, Brett.

In: IEEE Transactions on Plasma Science, Vol. 32, No. 5 I, 10.2004, p. 1925-1931.

Research output: Contribution to journalArticle

Tyo, J Scott ; Skipper, Michael C. ; Abdalla, Michael D. ; Romero, Samuel P. ; Cockreham, Brett. / Frequency and bandwidth agile pulser for use in wideband applications. In: IEEE Transactions on Plasma Science. 2004 ; Vol. 32, No. 5 I. pp. 1925-1931.
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