Device for generation of microwaves
AssigneeBae Systems Bofors AB
InventorsFredrik Olsson, Magnus Karlsson
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Abstract
The invention relates to a device for generation of microwaves comprising a virtual cathode oscillator (1) in a coaxial embodiment with an outer cylindrical tube forming a cathode (2) and connected to a transmission line (14) for feeding the cathode (2) with voltage pulses, and an inner cylindrical tube, at least partially transparent for electrons, forming a anode (3) and connected to a waveguide (13) for outputting microwave radiation generated by the formation of a virtual cathode (4) inside an area enclosed by the anode. Through the introduction of electrically conductive structures (5 and 6) a device for generation of microwaves is achieved that demonstrates higher efficiency and higher peak output.
Claims14
Device for generation of microwaves comprising a coaxial virtual cathode oscillator with an outer cylindrical tube forming a cathode and connected to a transmission line for supplying the cathode with voltage pulses, and a inner cylindrical tube, at least partially transparent for electrons, forming an anode and connected to a waveguide for outputting microwave radiation generated by the formation of a virtual cathode inside an area enclosed by the anode, wherein the cylindrical tube of the cathode on the inside is equipped with a first electrically conductive structure transverse to the tube's longitudinal direction at a distance from the anode's, for the electron's at least partially transparent, tube and that the anode's, for the electron's at least partially transparent, tube on the outside is equipped with a second electrically conductive structure transverse to the tube's longitudinal direction at a distance from the cathode's cylindrical tube for creating resonant cavities in the virtual cathode oscillator.
Dependencies are inferred from the claim text.