| 摘要 |
A traveling wave electron interaction device is provided having means for reducing intermodulation product amplitudes and cross-modulation in multisignal operation. An axial variation of a delay line phase velocity is introduced at substantially low levels of electron beam modulation to provide a positive velocity profile. The fundamental circuit wave of one signal is allowed to proceed with relative little gain while the space harmonic component of another signal is allowed to drop in magnitude thereby improving traveling wave tube linearity by desynchronizing of space harmonic interaction with the electron beam. The invention is suited for low power level communication type devices where signal distortion is a critical parameter.
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