Abstract
This paper presents the design and the performances of an embedded high-power microwave (HPM) wideband source, developed and built at the French-German Research Institute of Saint-Louis. The system was intended for dual use, homeland security, and military applications. It is powered by a 400 kV compact Marx generator with specificities in coaxial design and low energy. The slow monopolar signal from the Marx is sharpened using a pulse-forming stage, made of a switching module pressurized with nitrogen, followed by a monopulse-to-monocycle converter. The duration and rise times of this signal could be adjusted by varying the pressure and space between electrodes. Repetitive operations were performed up to 100 Hz during 10 s without a gas flow. Two kinds of antennas can be connected to the source. The first one is a TEM horn, with an optional dielectric lens, that radiates a vertically polarized UWB short pulse. The second one is a nine-turn helix, working in Kraus monopolar axial mode and radiating a circularly polarized wideband signal along the main axis. A dedicated conical reflector increases its directivity and bandwidth. The whole source is designed to be embedded inside an aluminum trailer, powered by batteries and remote controlled through an optical fiber.
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References
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Acknowledgments
The authors would like to thank the ISL Engineering Department and Central Workshop for their participation in this study and Tomas Hurtig and Mattias Elfsberg from the FOI, Swedish Defence Research Agency, for the first HPM outdoor experiments.
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Delmote, P., Pinguet, S., Bieth, F. (2014). Performances of a Compact, High-Power WB Source with Circular Polarization. In: Sabath, F., Mokole, E. (eds) Ultra-Wideband, Short-Pulse Electromagnetics 10. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9500-0_22
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DOI: https://doi.org/10.1007/978-1-4614-9500-0_22
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