| 摘要 |
<p>An efficient relatively high-power inductive output linear electron beam tube with broad-band capabilities is disclosed which is density modulated with a grid applying to the beam an RF modulating signal. The grid has a large active area and is comprised of a plurality of curved thin narrow elongated members. The beam is accelerated by DC potential of at least several kilovolts and a high-isolation input signal component includes adjacent but physically and electrically isolated wide-diameter,axially reduced annular cathode and grid lead components for leading both the DC beam-accelerating potential into the cathode, and the modulating RF signal into the grid with minimal impedance. Density modulation forms the beam into high-density moving bunches of electrons. An axial drift tube encloses the beam, extends to a collector, and is interrupted by a gap. A coaxial resonant cavity is provided about the drift tube, and there is induced in the cavity a VHF, UHF or microwave output signal corresponding to the modulating signal but with an output power of at least a kilowatt.</p> |
