Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Distributed parameter resonator-type magnetron
Patent
1997-01-31
1999-04-13
Lee, Benny T.
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Distributed parameter resonator-type magnetron
315 3971, 331 90, H01J 23213, H01J 2550
Patent
active
058941991
ABSTRACT:
A crossed-field device comprises a cathode having an electron emitting surface and an anode structure radially spaced from the cathode. The anode structure has a plurality of vanes extending in radial directions of the cathode with an interaction region defined between the electron emitting surface of the cathode and innermost radial ends of the anode vanes. First and second magnetic polepieces are respectively disposed at first and second axial ends of the cathode and have respective magnets coupled magnetically thereto. The polepieces direct magnetic flux from the respective magnets to define an axial magnetic field through the interaction region. The polepieces are electrically isolated from the anode structure. An anode modulator is adapted to provide a voltage potential between the anode structure and the cathode to define a radial electric field through the interaction region. A polepiece modulator is adapted to provide a voltage potential between the polepieces to define an axial electric field through the interaction region, whereby a frequency characteristic of the crossed-field device is adjusted by varying the axial electric field.
REFERENCES:
patent: 2251002 (1941-07-01), Rice et al.
patent: 2504187 (1950-04-01), Derby
patent: 2939046 (1960-05-01), Wilbur
patent: 2940007 (1960-06-01), Thal, Jr.
patent: 3334267 (1967-08-01), Plumridge
patent: 4104559 (1978-08-01), Hobbs
patent: 5422542 (1995-06-01), Schaeffer
Lee Benny T.
Litton Systems Inc.
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