Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1990-06-08
1993-08-10
Pascal, Robert J.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 551, 331 79, 328 64, H01J 2502
Patent
active
052352480
ABSTRACT:
A compact device called the split cavity modulator whose self-generated oscillating electromagnetic field converts a steady particle beam into a modulated particle beam. The particle beam experiences both signs of the oscillating electric field during the transit through the split cavity modulator. The modulated particle beam can then be used to generate microwaves at that frequency and through the use of extractors, high efficiency extraction of microwave power is enabled. The modulated beam and the microwave frequency can be varied by the placement of resistive wires at nodes of oscillation within the cavity. The short beam travel length through the cavity permit higher currents because both space charge and pinching limitations are reduced. The need for an applied magnetic field to control the beam has been eliminated.
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Krall, J. and Lau, Y. Y.; "Modulation of an intense beam by an external microwave source: Theory and Simulation"; Appl. Phys Lett; vol. 52, No. 6; Feb. 8, 1988; pp. 431-433.
Clark M. Collins
Coleman P. Dale
Marder Barry M.
Chafin James H.
Lee Benny T.
Moser William R.
Ojanen Karla
Pascal Robert J.
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