Laser and Particle Beams

Table of Contents - 2003 - Volume 21, Issue 02  


High-power ultrawideband radiation source

Yu.A.  ANDREEV  a1, V.P.  GUBANOV  a1, A.M.  EFREMOV  a1, V.I.  KOSHELEV  a1 c1, S.D.  KOROVIN  a1, B.M.  KOVALCHUK  a1, V.V.  KREMNEV  a1, V.V.  PLISKO  a1, A.S.  STEPCHENKO  a1 and K.N.  SUKHUSHIN  a1
a1 Institute of High Current Electronics, Russian Academy of Science, Tomsk, Russia

Abstract

The article presents a source producing high-power ultrawideband electromagnetic pulses. The source includes a generator of monopolar pulses, a bipolar pulse former, and a combined ultrawideband transmitting antenna. Monopolar 150-kV, 4.5-ns pulses are transformed into bipolar 120-kV, 1-ns pulses, which are emitted by the antenna. The pulse repetition rate of the setup is up to 100 Hz. The peak power of the source is 170 MW as measured with a TEM-type receiving antenna having 0.2–2 GHz passband. The pattern width of the transmitting antenna at a half-level of peak power is 90° and 105° for the H- and E-planes, respectively. The electric field strength measured 4 m from the transmitting antenna in the direction of the main radiation maximum is 34 kV/m.

(Received April 1 2003)
(Accepted May 16 2003)


Key Words: Bipolar pulse former; Gas gap switch; Tesla transformer; Ultrawideband antenna; UWB.

Correspondence:
c1 Address correspondence and reprint requests to: V.I. Koshelev, High Current Electronics Institute SD RAS, 4 Akademichesky Ave., 634055 Tomsk, Russia. E-mail: koshelev@lhfe.hcei.tsc.ru

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