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Generation of Ultrawide Band Electromagnetic Pulse from Blumlein Pulse Forming Line
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 Title & Authors
Generation of Ultrawide Band Electromagnetic Pulse from Blumlein Pulse Forming Line
Jin, Yun Sik; Kim, Jong Soo; Cho, Chuhyun; Roh, Young Su;
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A high voltage pulse generator was fabricated to radiate ultrawide band electromagnetic pulse. A coaxial type of Blumlein pulse forming line is employed to produce a pulse of high voltage (>300 kV) and short pulse duration (~5 ns). A helical strip/wire type of air-cored pulse transformer was used to charge the Blumlein pulse forming line up to more than 300 kV. A peaking switch is essential to make the pulse rise time as fast as possible. Typically, the rise time is ~500 ps. The output pulse of the generator is radiated into air through an exponentially tapered TEM horn antenna. The electric field intensity of a radiated pulse was measured as a function of the distance from the transmitting horn as well as the output voltage of the peaking switch. The peak-to-peak value of the electric field intensity at 10 m from the TEM antenna was~100 kV/m.
Blumlein PFL;High voltage;TEM antenna;Ultrawide band;EMP;
 Cited by
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