US3705327A
Expired / Lapsed
US
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Microwave generator with interleaved focusing and interaction structures
Assignee: Individual
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Filing: 1971-06-02
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Granted: 1972-12-05
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Expires: 1991-06-02
Abstract
Abstract A microwave generator comprising an electron beam focused by a novel focusing means is described. The lines of the focusing means are interleaved with a microwave interaction structure that assists in the focusing function. Klystron and travelling wave tube configurations are depicted with the interleaved focusing and interaction structures printed on ceramic sheets in one preferred embodiment. The ceramic sheets may be notched around and between the printed lines of the focusing and interaction structures to reduce radio frequency and DC arcing.
Inventors
- 👤 Allan W Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/02; H01J23/08; H01J23/083
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
193 words
An ultra-high frequency electron beam generator comprising: means forming a vacuum enclosure shaped in a predetermined manner to match the desired shape of said electron beam; a dielectric surface as part of said vacuum enclosure forming means and having a surface conforming to said desired shape and facing said electron beam; an electrostatic focusing means; a microwave interaction structure for interacting with the electrons in said beam for generating microwave energy; said generator characterized in that: said focusing means comprises a circuit printed on said dielectric surface facing said electron beam and adapted for connection to a source of focusing potential for focusing said electron beam, said focusing circuit geometrically oriented relative to said microwave interaction structure for freedom of operational interference with the microwave generating operation of said microwave interaction structure; and said microwave interaction structure comprises a circuit printed on the same surface of said dielectric member as is said printed circuit of said focusing means; said microwave interaction circuit is adapted for connection to another source of potential and is geometrically oriented relative to said focusing circuit for freedom of operational interference with the focusing operation of said focusing means.
Claim 2
Dependent Claim
193 words
An ultra-high frequency electron beam generator comprising: means forming a vacuum enclosure shaped in a predetermined manner to match the desired shape of said electron beam; a dielectric surface as part of said vacuum enclosure forming means and having a surface conforming to said desired shape and facing said electron beam; an electrostatic focusing means; a microwave interaction structure for interacting with the electrons in said beam for generating microwave energy; said generator characterized in that: said focusing means comprises a circuit printed on said dielectric surface facing said electron beam and adapted for connection to a source of focusing potential for focusing said electron beam, said focusing circuit geometrically oriented relative to said microwave interaction structure for freedom of operational interference with the microwave generating operation of said microwave interaction structure; and said microwave interaction structure comprises a circuit printed on the same surface of said dielectric member as is said printed circuit of said focusing means; said microwave interaction circuit is adapted for connection to another source of potential and is geometrically oriented relative to said focusing circuit for freedom of operational interference with the focusing operation of said focusing means.
Claim 3
Dependent Claim
143 words
An ultra-high energy generator in accordance with claim 1 and further characterized in that said beam forming means is configured to form a flat elongated sheet beam of electrons having an average electron beam voltage potential and said first source of potential is selected either positive or negative relative to said average electron beam voltage potential, and said second source of potential is chosen of opposite polarity relative to said chosen potential of said first source and also is either positive or negative relative to said average electron beam voltage potential, and further characterized in that said focusing circuit includes at least one continuous longitudinal printed lead on said dielectric surface at an area adjacent the outer edge of the flat sheet beam and substantially parallel to the longitudinal axis of the electron beam for focusing the edge of said flat sheet beam.
Claim 4
Dependent Claim
69 words
An ultra-high energy generator in accordance with claim 2 and further characterized in that said focusing circuit comprises a second continuous longitudinal printed lead on said dielectric surface at an area adjacent the opposite outer edge of said flat sheet beam and substantially parallel to said one continuous printed lead, and further comprising means connecting both of said longitudinal printed leads together and to said second source of potential.
Claim 5
Dependent Claim
28 words
An ultra-high frequency generator in accordance with claim 1 wherein said forming means comprises: a dielectric member having defined therein a predetermined elongated cavity for said electron beam.
Claim 6
Dependent Claim
39 words
An ultra-high frequency generator in accordance with claim 4 further comprising: means at one end of said elongated cavity for emitting an electron beam; and means at the other end of said elongated cavity for collecting said electron beam.
Claim 7
Dependent Claim
36 words
An ultra-high frequency generator in accordance with claim 4 wherein the focusing means and the interleaved interaction structure are printed on a surface of said dielectric member defining said elongated cavity and facing said electron beam.
Claim 8
Dependent Claim
25 words
An ultra-high frequency generator in accordance with claim 6 wherein said dielectric member comprises: a pair of opposed dielectRic sheets defining therebetween said elongated cavity.
Claim 9
Dependent Claim
35 words
An ultra-high frequency generator in accordance with claim 7 wherein said elongated cavity is substantially flat and is defined by a pair of opposed flat planar dielectric sheets sealably joined at a raised periphery thereof.
Claim 10
Dependent Claim
47 words
An ultra-high frequency generator in accordance with claim 1 wherein said interaction structure comprises: a single meander line having at least a pair of repetitive periods; and said focusing means comprises a single-sided ladder circuit with a focus lines interleaved between the periods of said meander line.
Claim 11
Dependent Claim
51 words
An ultra-high frequency generator in accordance with claim 1 wherein said interaction structure comprises: a double meander line having a plurality of repetitive periods; and said focusing means comprises a pair of single-sided ladder circuits with focus lines from each ladder circuit interleaved between the periods of said double meander line.
Claim 12
Dependent Claim
40 words
An ultra-high frequency generator in accordance with claim 1 wherein said interaction structure comprises: at least a pair of distributed klystron cavity resonators; and said focusing means comprises at least one focus line positioned between said pair of cavity resonators.
Claim 13
Dependent Claim
91 words
An ultra-high frequency generator in accordance with claim 1 wherein the interaction structure defines a combination klystron and travelling wave tube mode and said interaction structure further comprises: an input section and an output section with said input section comprising at least one klystron cavity resonator and said output section comprising a meander line having a plurality of repetitive periods; and said focusing means further comprises a focus line separating said klystron cavity resonator and said meander line and further comprising focus lines positioned between the periods of said meander line.
Claim 14
Dependent Claim
69 words
An ultra-high frequency generator in accordance with claim 12 wherein said input section comprises: at least a pair of klystron cavity resonators having at least three focus lines with one focus line extending laterally in front of the first cavity of said pair; a second focus line extending laterally and separating the pair of cavities; and a third focus line extending laterally following the second cavity of said pair.
Claim 15
Dependent Claim
59 words
An ultra-high frequency generator in accordance with claim 13 wherein each klystron cavity resonator includes a double meander line resonant circuit having two periods and further comprising: at least a focus line broken in the middle and extending laterally into the cavity resonator section at the period points for said double meander line of said one klystron cavity resonator.
Claim 16
Dependent Claim
42 words
An ultra-high frequency generator in accordance with claim 14 wherein said output section comprises: a double meander line and said focusing means comprises a double sided ladder circuit with broken lateral lines extending into the double meander lines at its period locations.
Claim 17
Dependent Claim
30 words
An ultra-high frequency generator in accordance with claim 6 wherein the printed focusing means and interaction structure are positioned on dielectric islands formed by upraised portions of the dielectric member.
Claim 18
Dependent Claim
107 words
An ultra-high frequency generator comprising: dielectric means having an evacuated electron beam cavity of a predetermined shape; means for forming an electron beam of said predetermined shape in said cavity and including a printed circuit electrostatic focusing means on said dielectric and adapted to be connected at one predetermined potential for forming said beam cavity; and a microwave interaction structure interleaved with said focusing means and also printed on the same side of said dielectric surface as said printed electrostatic focusing means and electrically connected to a second potential for sharing in the focusing of said beam and for interaction with said beam to generate microwave power.
Claim 19
Dependent Claim
107 words
An ultra-high frequency generator comprising: dielectric means having an evacuated electron beam cavity of a predetermined shape; means for forming an electron beam of said predetermined shape in said cavity and including a printed circuit electrostatic focusing means on said dielectric and adapted to be connected at one predetermined potential for forming said beam cavity; and a microwave interaction structure interleaved with said focusing means and also printed on the same side of said dielectric surface as said printed electrostatic focusing means and electrically connected to a second potential for sharing in the focusing of said beam and for interaction with said beam to generate microwave power.
Claim 20
Dependent Claim
36 words
An ultra-high frequency generator in accordance wiTh claim 17 wherein said focusing means and said microwave interaction structure comprise: separate elements each printed on a common side of the dielectric means which faces said electron beam.
Claim 21
Dependent Claim
52 words
An ultra-high frequency generator in accordance with claim 18 wherein: said dielectric means is notched on said one side in such a configuration that the focusing means and interaction structure are printed on raised dielectric islands for reducing direct current and radio frequency arcing between said focusing means and said interaction structure.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |