H - Electricity – 01 – J
Patent
H - Electricity
01
J
353/31
H01J 25/04 (2006.01) H01J 23/065 (2006.01)
Patent
CA 1204512
ABSTRACT OF THE DISCLOSURE 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 modul- ating 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.
424063
Preist Donald H.
Shrader Merrald B.
R. William Wray & Associates
Varian Associates Inc.
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