Compact magnetron with small axial length and slot antenna output attached thereto
AssigneeTokyo Shibaura Electric Co., Ltd.
InventorsNorio Tashiro, Hirokazu Takahashi
Life of this patent
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Abstract
A magnetron having a hollow cylindrical anode having resonance cavities formed therein and a cathode arranged in the axial direction of the anode, wherein one open end of the hollow cylindrical anode is fitted hermetically with a conductor plate electrically connected to the anode; a slot antenna is provided on the conductor plate; one end of an output conductor, the other end of which is connected to the resonance cavities, extends to the feeding point of the slot antenna for obtaining a microwave output.
Claims23
A vane-type magnetron comprising:
- an anode having an anode cylinder and a plurality of vanes extending from the inner surface of the anode cylinder toward the central axis of the anode cylinder to define resonance cavities within the anode cylinder,
- a cathode disposed at the central axis of the anode cylinder,
- magnetic means for applying a magnetic field to a space between the anode and the cathode,
- a conductor member disposed at one end opening of the anode for electrical connection therewith,
- a slot antenna comprising a bored slot in the conductor member for radiating microwaves generated in the resonance cavities,
- a microwave-output conductor, one end of which is electrically connected to a vane and the other end of which is connected to a microwave-feeding point of the slot antenna, and
- sealing means for maintaining the internal space of the anode hermetic.
An interdigital type magnetron, which comprises an anode having resonance cavities provided therein;
- a cathode disposed in the axial direction of the anode;
- magnetic means for applying a magnetic field to a space defined between the anode and the cathode;
- a conductor member closing one end opening of the anode;
- a slot antenna for radiating microwaves generated in the resonance cavities through a slot bored in said conductor member;
- and sealing means for keeping the internal space of the anode hermetically.
Dependencies are inferred from the claim text.