Methods to produce short-pulse high-power microwaves

ISBN-13: 9783846548813 / Angielski / Miękka / 2011 / 132 str.

Andrey D. Andreev

Opis

A comparison of the radial distribution of output HPM power produced by a relativistic magnetron driven by a traditional solid cathode and recently invented transparent cathode was performed. The transparent cathode was found to improve relativistic magnetron operation by providing faster start of microwave oscillations at a predetermined mode without mode competition. Comparison of output microwave pulses produced by the microwave pulse compressor equipped with a mechanically operated switch and a fast gas-discharge switch showed that the latter one sufficiently shortens the rise time of the output microwave pulse. Results of this research suggest that: i) the use of a transparent cathode in relativistic and, probably, nonrelativistic magnetrons provides better mode selection by locking the desired magnetron oscillations in a shorter period of time, and ii) the use of a faster switch (as fast as possible) in a waveguide of a microwave pulse compressor shortens the rise time of the compressed output microwave pulse.

O autorze

Andrey D. Andreev received the Ph.D. degree in Electrical Engineering from the University of New Mexico, Albuquerque, NM in December 2007. He is Sr. High-Power Microwave Physicist with the Raytheon Missile Systems, Advanced Security and Directed Energy Systems, Directed Energy Division of the Raytheon Ktech, Albuquerque, NM.