Analysis of a tapered vane loaded broad-band gyro-TWT

In this theoretical paper, the wide-band low-gain feature of a tapered smoo th wall gyro-traveling wave tube (gyro-TWT) was combined with the low beam energy, low magnetic field, and high gain, though narrow band, feature of a vane loaded nontapered gyro-TWT, to propose a distributed, tapered vane lo aded gyro-TWT for both high gains and wide bandwidths. The device was analy zed for the tapering of any one of the three parameters-the waveguide radiu s, the vane depth, and the vane angle-keeping the remaining two as constant . The magnetic held was also synchronously tapered. The optimum taper and v ane parameters were predicted for a large gain and bandwidth.