Linear beam microwave tube with planar cold cathode electrode as

Details Linear beam microwave tube with planar cold cathode electrode as Linear beam microwave tube with planar cold cathode electrode as

1996-10-30

1998-08-18

Pascal, Robert J.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 534, 313452, 313414, H01J 23083

Patent

active

057962120

ABSTRACT:
An electron gun using a plane type cold cathode electrode has a beam focusing electrode which is disposed in front of the plane type cold cathode electrode and has a hole having a diameter smaller than an electron emission region. The beam focusing electrode is in direct contact with a cathode chip constituting the plane type cold cathode electrode, thus realizing direct electrical connection between the cold cathode chip and the beam focusing electrode. The arrangement enables the converging of an electron beam from the cold cathode electrode to a desired shape and the accurate setting of the center of a beam orbit to a desired position.

REFERENCES:
patent: 2842703 (1958-07-01), Priest
patent: 3116435 (1963-12-01), Heil
patent: 4182628 (1980-01-01), D'Silva
patent: 4825121 (1989-04-01), Miyazaki
patent: 5514847 (1996-05-01), Makishima et al.
patent: 5604401 (1997-02-01), Makishima
patent: 5623183 (1997-04-01), Allen et al.
C.A. Spindt et al., "Progress in Field-Emitter Array Development for High-Frequency Operation", IEDM 93, 1993, pp. 749-752.
R.K. Parker, "Vacuum-Microlectronics Technology for RF Power Devices", IVMC Technical Digest, Jul. 12, 1993, pp. 1-4.

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