A High-Current-Density Electron Beam for Millimeter-Wave Amplifiers

Alan M. Cook,Edward L. Wright,Khanh T. Nguyen,Colin D. Joye,John C. Rodgers,Reginald L. Jaynes,John Atkinson,Takuji Kimura

IEEE Transactions on Electron Devices（2021）

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摘要

We present experimental characterization of a 20-kV, 130-mA thermionic electron gun, which is a component of a ${W}$ -band traveling-wave tube (TWT) power amplifier. The electron beam is strongly focused by a 6.6-kG permanent magnet solenoid, producing a peak current density up to 800 A/cm2. The cathode temperature, focus electrode voltage, and modulating anode voltage are varied to characterize ...

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关键词

Voltage measurement,Cathodes,Iron,Electron guns,Radio frequency,Magnetic tunneling,Electron beams

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