Multipactor discharge tuned co-axial magnetrons
AssigneeEnglish Electric Valve Company Limited
InventorsAlan Hugh Pickering, Michael Barry Clive Brady, Peter Frederick Lewis
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Abstract
This invention relates to a co-axial magnetron in which a separate resonator incorporating a multipactor discharge arrangement is used to tune the operating frequency of the magnetron. The separate resonator is symmetrically coupled via couplers into the main resonator cavity of the magnetron. More than one separate resonant can be provided, in which case they are symmetrically coupled into the main resonant cavity to achieve correct tuning.
Claims21
A co-axial magnetron including an anode structure having a plaurlity of cavities, and a main resonant cavity co-axially surrounding said anode structure, said anode structure including coupling means for coupling the cavities thereof with said main resonant cavity and at least one resonator separate from said main cavity and incorporating a multipactor discharge arrangement for modifying the resonant characteristics of the separate resonator and means for coupling said resonator or resonators symmetrically into the main co-axial resonant cavity of said magnetron.
In a co-axial magnetron including an anode structure having a plurality of cavities, and a resonant cavity co-axially surrounding said anode structure, said anode structure including coupling means for coupling the cavities thereof with said resonant cavity, and said resonant cavity including output means for coupling energy out of the resonant cavity, the improvement which comprises:
- resonator means disposed externally of said resonant cavity for tuning the resonant frequency of said magnetron, said resonator means including multipactor discharge means and means for controlling multipactor discharge thereof;
- and
- resonator coupling means for coupling said resonator means into said resonant cavity of the magnetron symmetrically about the axis of said magnetron.
In a co-axial magnetron having a resonant cavity provided with output means for coupling energy out of the resonant cavity, and an anode structure disposed co-axially within said resonant cavity and coupled thereto, the improvement which comprises:
- resonator means disposed externally of said resonant cavity for tuning the resonant frequency of said magnetron, said resonator means comprising first and second multipactor discharge electrode means;
- and
- resonator coupling means connected to one of said multipactor discharge electrode means and extending into said resonant cavity of said magnetron at a plurality of locations distributed symmetrically around the axis of said magnetron for coupling said resonator means symmetrically into said resonant cavity.
Dependencies are inferred from the claim text.