Cold cathode density-modulated type electron gun and microwave t

Details Cold cathode density-modulated type electron gun and microwave t Cold cathode density-modulated type electron gun and microwave t

1994-06-08

1997-10-21

Lee, Benny T.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 537, 315 533, 315 393, 313309, 313351, H01J 2304, H01J 2500

Patent

active

056800118

ABSTRACT:
Tips of emitters are protruded over a control electrode in a field emission cathode. The cathode is a part of an input cavity, and an anode facing the cathode is also a part of the input cavity. A voltage which is in the vicinity of a threshold value or less than the threshold value is applied across the control electrode and the emitters, so that an emission current is modulated in density by a RF input signal.

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patent: 4145635 (1979-03-01), Tuck
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patent: 5189341 (1993-02-01), Itoh et al.
Robert E. Neidert, et al., "Field Emission Triodes", IEEE Transactions On Electron Devices, vol. 38, No. 3, Mar. 1991, pp. 661-665.
C.A. Spindt et al., "Physical properties of thin-film field emission cathodes with molybdenum cones", Journal of Applied Physics, vol. 47, No. 12, Dec. 1976, pp. 5248-5263.
P.M. Lally et al., "An X-Band Tuned Amplifier with a Field-Emission Cathode", IEEE Transactions on Electron Devices, vol. 36, No. 11, Nov. 1989, pp. 2738-2741.
M.A. Kodis et al., "The Emission Gated Device Experiment", IEDM, 1990, pp. 893-896.
H.H. Busta et al., "Triode Operaton of a Vacuum Transistor", IEDM, 1991, pp. 213-215.

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