Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Reexamination Certificate
2008-01-01
2008-01-01
Tran, Thuy V. (Department: 2821)
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
C315S005350, C315S404000
Reexamination Certificate
active
07315126
ABSTRACT:
An amplifying device comprises an electron gun emitting an electron beam, a collector spaced from the electron gun, the collector oriented to collect electrons of the electron beam emitted from the electron gun, and an interaction structure interposed between the electron gun and the collector. The interaction structure defines an electromagnetic path along which an applied electromagnetic signal interacts with the electron beam. The interaction structure further comprises a plurality of polepieces and a plurality of magnets, the polepieces each having an aligned opening to collectively provide an electron beam tunnel having an axis extending between the electron gun and the collector to define an electron beam path for the electron beam. The polepieces provide a magnetic flux path to the electron beam tunnel from the magnets. More particularly, the interaction structure further includes plural cavities defined therein interconnected to provide a coupled cavity circuit. At least one of the plurality of polepieces separate adjacent ones of the plural cavities and have an iris for coupling the electromagnetic signal therethrough. At least one of the plurality of polepieces further has a void aligned perpendicularly to the beam tunnel axis.
REFERENCES:
patent: 5754006 (1998-05-01), Tonegawa
patent: 6593695 (2003-07-01), Theiss
Duong Dieu Hien
L-3 Communications Corporation
O'Melveny & Myers LLP
Tran Thuy V.
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