Microwave generator with virtual cathode oscillator and open reflectors
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsStephanie Champeaux, Philippe Gouard
Life of this patent
Estimating the term…
Abstract
A device for generating microwaves with an oscillating virtual cathode includes a cathode, and a thin anode positioned at an inlet of a cylindrical waveguide (5). The waveguide includes at least one first open reflector and one last open reflector that are transparent to electrons and capable of reflecting a microwave created by at least one virtual cathode generated in the waveguide. A plurality of open reflectors are between the first and last open reflector, such that a designated reflector of the plurality of open reflectors has a radius R(i−1) less than or equal to a radius Ri of an immediately preceding reflector and the last open reflector has a radius RN less than a radius R1 of the first open reflector.
Claims9
A microwave wave generator device with a virtual cathode oscillator, in axial configuration, the device comprising:
- a cathode;
- and
- a thin anode positioned at an entrance to a cylindrical wave guide having a radius (RG), the thin anode between the cathode and the wave guide,
- the device further comprising:
- at least a first open reflector and a last open reflector located in the wave guide, and transparent to electrons and configured to reflect a microwave wave created by at least one virtual cathode generated in the wave guide, wherein the first open reflector is a closest reflector to the thin anode, and the last open reflector is a closest reflector to an exit from the wave guide;
- a plurality of open reflectors including the first and the last open reflector such that a designated reflector of the plurality of open reflectors has a radius (RR(i+1)) less than or equal to a radius (RRi) of a directly preceding reflector of the plurality of open reflectors, where (i) is a reflector rank, and the last open reflector has a radius (RRN) less than a radius (RR1) of the first open reflector, where (N) is the total number of reflectors.
Dependencies are inferred from the claim text.