Microwave device
OwnerZinaida P. Kapitonovainventor
Life of this patent
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Abstract
A microwave device comprises a cathode producing stream of electrons into the space defined by the cathode and electrodynamic or anode system cells connected in parallel with individual band-reject filters via coupling elements. The rejection band of the filters covers the operating frequency or operating frequency range of the micorwave device. The filters are electrically associated with broad-band microwave loads made as shorted transmission line sections with a variable characteristic impedance, whose surface has a microwave absorbing coating. This ensures suppression of the undesired modes on either side of the operating frequency or operating frequency range of the microwave device.
Claims3
A microwave device characterized by an operating frequency range having undesired modes on either side thereof, comprising:
- a cathode emitting a stream of electrons;
- an anode made up of individual cells receiving and interacting with the stream of electrons;
- a coupling element provided in at least one of said cells of said anode;
- a plurality of band-reject filters having a rejection band covering the operating frequency range of said microwave device, and each band-reject filter being connected in parallel with respective said at least one of said cells via respective said coupling element;
- and
- a plurality of broad-band microwave loads, located outside said anode, comprising shorted transmission line sections and having a variable characteristic impedance;
- each respective said coupling element conveying said undesired modes from respective said at least one of said cells to said each band-reject filter, said each band-reject filter discriminating between desired modes and said undesired modes of said device, said plurality of broad-band microwave loads being electrically associated with said band-reject filters and having a microwave absorbing coating for suppressing the undesired modes on either side of said operating frequency range of said microwave device.
Dependencies are inferred from the claim text.