The GIMLI: A Compact High-Power UWB Radiation Source

  • P. DelmoteEmail author
  • B. Martin


This chapter presents the design and performances of a compact, general-purpose, high-power ultra-wideband (UWB) source named GIMLI. The system was designed for dual use, homeland security and military applications. It is powered by a compact, coaxial 12-stage Marx generator with a rise time lower than 25 ns and an operating voltage up to 360 kV. A fast monocycle pulse is sharpened using a pulse former (MPF). The shaper stage comprises a switching module including a peaking and a grounding multi-channel spark gap under a N2 pressure of 6 MPa. The module is followed by a monopulse-to-monocycle converter based on a coaxial Blumlein pulse forming line. The bipolar signal measured at the output of the MPF has a duration shorter than 2 ns with a rise time of 250 ps. The peak-to-peak output voltage is 250 kV on a 50 Ω resistive load. Repetitive operation of the MPF has been experienced with a 200 Hz Tesla transformer developed by the CEA (Commissariat à l’Energie Atomique). Electromagnetic energy is focused by a dedicated antenna. The designed antenna is a TEM half-horn with two ridges which improve the low-frequency focusing. High-power radiation tests show that the field measured at a distance of 9 m from the TEM Horn-antenna is higher than 120 kV/m.


UWB High power Source GIMLI 



The authors would like to gratefully thank Bruno Cassagny, Antoine Sylvestre de Ferron, Patrick Modin and Eric Merle from the CEA/CESTA, René Vézinet from DGA/CEG for their very rewarding collaboration on this project.


  1. 1.
    B. Martin, P. Delmote, and B. Jecko, Design of an ultra compact UWB pulse former, presented at 16th International Pulsed Power Conference, Albuquerque, NM, USA, 2007.Google Scholar
  2. 2.
    Y. Yankelevich and A. Pokryvailo, A compact former of high-power bipolar subnanosecond pulses, IEEE Transactions on Plasma Science, vol. 33, pp. 1186–91, 2005.ADSCrossRefGoogle Scholar
  3. 3.
    Yu. A. Andreev, V. P. Gubanov, A. M. Efremov, V. I. Koshelev, S. D. Korovin, B. M. Kovalchuk, V. V. Kremnev, V. V. Plisko, A. S. Stepchenko, and K. N. Sukhushin, High-power ultrawideband electromagnetic pulse source, presented at 14th International Pulsed Power Conference, Dallas, Texas, 2003.Google Scholar

Copyright information

© Springer-Verlag New York 2010

Authors and Affiliations

  1. 1.French-German Research Institute of Saint-LouisHigh Power Microwave GroupSaint-LouisFrance

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