Efficient operation of a high-power X-band traveling wave tube amplifier
نویسندگان
چکیده
We report experimental results demonstrating 54% power conversion efficiency ~43% energy conversion efficiency!, from a two-stage X-band traveling wave tube amplifier designed for high-power operation. The first stage of the amplifier is a 12-cm-long Boron Nitride dielectric section used to modulate the electron beam. The second stage consists of a long high-phase-velocity bunching section followed by a short low-phase-velocity output section. Output powers of up to 78 MW with narrow spectrum width were obtained with ;700 kV, ;200 A beam. © 1999 American Institute of Physics. @S0003-6951~99!02642-X#
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