IL42696A - Periodic magnetically focused beam tube - Google Patents
Periodic magnetically focused beam tubeInfo
- Publication number
- IL42696A IL42696A IL42696A IL4269673A IL42696A IL 42696 A IL42696 A IL 42696A IL 42696 A IL42696 A IL 42696A IL 4269673 A IL4269673 A IL 4269673A IL 42696 A IL42696 A IL 42696A
- Authority
- IL
- Israel
- Prior art keywords
- slab
- disposed
- major face
- sheet
- dielectric slab
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
- H01J23/087—Magnetic focusing arrangements
- H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
Landscapes
- Microwave Tubes (AREA)
Claims (2)
1. 42696/2 CLAIMS. 1. In a magnetically focused beam tube, an evacuable envelope structure, means within said envelope for forming and projecting a^sheet-shaped beam of charge particles over a predetermined beam path, electrical circuit means disposed along the beam path in electromagnetic wave energy exchanging relation with the beam of charged particles, periodic magnetic focus mean disposed along the beam path for producing a periodic magnetic, field within the beam path for focusing the beam along a predetermined beam path, said periodic magnetic focus means homogeneous including a slab of/material having a planar face facing said beam, said material being permanently magnetized in a pattern of periodic permanent poles of alternating polarity in a direction along the beam path.
2. The apparatus of Claim 1 wherein said periodic magneti focus means includes a pair of said slabs disposed on opposite sides of said sheet-shaped beam. 3· The apparatus of Claim 1 wherein the period of said pattern of permanent magnetic poles changes in a direction taken along the beam path. . The apparatus of Claim 1 wherein s aid magnet slab is a slab of ferrite magnet material. 5# The apparatus of Claim 1 wherein said magnet slab is a slab of permanently magnetizable magnet particles embedded in a binder material. i 42696/2 6. i e apparatus of Claim 5 wherein said binder material is flexible such that said slab is flexible. 7. The apparatus of Claim 1 including, a dielectric slab having major and mino faces with a major face disposed facing a major face of said sheet-shaped beam, and wherein said magnetizable member includes a slab of substantially homogeneous permanently magnetizable material disposed overlaying said dielectric slab, and said magnetic slab member having major and minor faces, and a major face of said magnetic member bein disposed facing a major face of said dielectric slab. 8. The apparatus of Claim 7 wherein said permanently magnetizable structure includes a pair of said magnetizable slabs disposed on opposite sides of said sheet-shaped beam with thei respective m or faces disposed facing a corresponding major fac« of said sheet-shaped beam. 9. She apparatus o Claim 7 wherein said electrical circui is a microwave interaction structure formed on said major face of said dielectric slab which faces the corresponding major face of said sheet-shaped beam. 10. The apparatus of Claim 9 including electrostatic edge focusing electrode means disposed adjacent the edge regions of said slow wave circuit in electrical insulative relatio thereto and extending along the opposite edges of said sheet-shaped beam for constraining lateral expansion of said sheet-shaped beam. 11. She apparatus of Claim 10 wherein said edge focusing electrode means is disposed on said major face of said dielectric slab which faces said major face of said beam. 42696/2 12· The apparatus of Claim 11 wherein the beam of charged particles is a beam of electrons, and wherein said beam forming and projecting means includes a thermionic cathode emitter means disposed at the upstream end of said beam path for generating the beam of electrons, current carrying lead means for supplying heater current to said thermionic cathode emitter, and wherein said dielectric slab has an even major face facing said correspondin major face of said electron beams, and therein said slow nav circuit, edge focusing electrode means, and said heater lead means are all ormed directl on and li substantially entirely on said even major face of said dielectric slab which faces said sheet-shaped electron beam. 13· The apparatus of Claim 12 wherein said even major face of said dielectric slab ie planar. 14· Te apparatus of Claim 13 including beam collector electrode means disposed on and lying substantially entirely on said planar majo face of said dielectric slab at th terminal end of said beam path. 15 Che apparatus of Claim 1 including, beam focus electrode structure disposed on and lying substantially entirely on said planar major face of said dielectric slab at the upstream end of said beam path intermediate said cathode emitter means and said slow wave circuit means. 6. fe apparatus of Claim 9 wherein sai electrical circuit means includes a pair of elongated microwave intex&efcion structure means disposed on said major face of said dielectric slab in end-to-end relation, and wherein said beam forming and projecting means includes a thermionic cathode emitter disposed 42696/2 intermediate the adjacent ends of said pair of microwave interaction structure means for projecting a pair of electron beams in opposite direction along said pair of microwave interaction structure means. 17. $h© apparatus of Claim 9 wherein said electrical circuit means Includes a plurality of elongated microwave interaction structure means disposed on and lying substantially entirely on said major face of said dielectric slab in side-by-side relation. For the Applicants BB. EEIKHOLD COT JUS© PARTHESS By:
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27840872A | 1972-08-07 | 1972-08-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
IL42696A0 IL42696A0 (en) | 1973-10-25 |
IL42696A true IL42696A (en) | 1976-02-29 |
Family
ID=23064862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL42696A IL42696A (en) | 1972-08-07 | 1973-07-09 | Periodic magnetically focused beam tube |
Country Status (7)
Country | Link |
---|---|
US (1) | US3787747A (en) |
JP (1) | JPS49124962A (en) |
DE (1) | DE2338061A1 (en) |
FR (1) | FR2195838B1 (en) |
GB (1) | GB1406938A (en) |
IL (1) | IL42696A (en) |
IT (1) | IT992766B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909651A (en) * | 1974-08-15 | 1975-09-30 | Us Army | Low-cost periodic permanent magnet and electrostatic focusing scheme for electron tubes |
US3982152A (en) * | 1974-11-25 | 1976-09-21 | Raytheon Company | Cascade crossed field device |
US3971965A (en) * | 1975-03-31 | 1976-07-27 | The United States Of America As Represented By The Secretary Of The Army | Internally-focused traveling wave tube |
US4107573A (en) * | 1977-02-02 | 1978-08-15 | The United States Of America As Represented By The Secretary Of The Army | Printed circuit traveling wave tube |
US4232249A (en) * | 1978-09-28 | 1980-11-04 | Bell Telephone Laboratories, Incorporated | Beam-switched traveling wave tube |
US4392078A (en) * | 1980-12-10 | 1983-07-05 | General Electric Company | Electron discharge device with a spatially periodic focused beam |
US5227691A (en) * | 1989-05-24 | 1993-07-13 | Matsushita Electric Industrial Co., Ltd. | Flat tube display apparatus |
US5712537A (en) * | 1993-01-11 | 1998-01-27 | Real Time Electronics, Corporation | High frequency scan converter |
US6700454B2 (en) | 2001-06-29 | 2004-03-02 | Zvi Yaniv | Integrated RF array using carbon nanotube cathodes |
US7037370B2 (en) * | 2003-02-06 | 2006-05-02 | Mearini Gerald T | Free-standing diamond structures and methods |
FR2856189B1 (en) * | 2003-06-10 | 2007-02-16 | Hutchinson | METHOD FOR MANUFACTURING A MAGNETIC ENCODING DEVICE, AND THE DEVICE THUS OBTAINED |
WO2005017939A2 (en) * | 2003-06-30 | 2005-02-24 | Massachusetts Institute Of Technology | Ribbon-beam travelling wave amplifier with a single-sided slow-wave structure |
US7193485B2 (en) | 2003-08-12 | 2007-03-20 | James A. Dayton, Jr. | Method and apparatus for bi-planar backward wave oscillator |
US7679462B2 (en) | 2006-07-13 | 2010-03-16 | Manhattan Technologies, Llc | Apparatus and method for producing electromagnetic oscillations |
WO2010065170A1 (en) * | 2008-08-20 | 2010-06-10 | Manhattan Technologies Ltd. | Multibeam doubly convergent electron gun |
US8723137B1 (en) * | 2012-10-17 | 2014-05-13 | Innosys, Inc | Hybrid magnet for vacuum electronic device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2812470A (en) * | 1954-10-22 | 1957-11-05 | Bell Telephone Labor Inc | Periodic focusing in traveling wave tubes |
US2911555A (en) * | 1957-09-04 | 1959-11-03 | Hughes Aircraft Co | Traveling-wave tube |
US3102211A (en) * | 1959-08-19 | 1963-08-27 | Varian Associates | Adiabatic beam condenser method and apparatus |
US3231780A (en) * | 1960-10-14 | 1966-01-25 | Sfd Lab Inc | Meandering slow wave circuit having high impedance stub support means |
US3504222A (en) * | 1966-10-07 | 1970-03-31 | Hitachi Ltd | Slow-wave circuit including meander line and shielding therefor |
US3610999A (en) * | 1970-02-05 | 1971-10-05 | Varian Associates | Slow wave circuit and method of fabricating same |
US3670196A (en) * | 1971-02-24 | 1972-06-13 | Raytheon Co | Helix delay line for traveling wave devices |
US3705327A (en) * | 1971-06-02 | 1972-12-05 | Allan W Scott | Microwave generator with interleaved focusing and interaction structures |
-
1972
- 1972-08-07 US US00278408A patent/US3787747A/en not_active Expired - Lifetime
-
1973
- 1973-07-09 IL IL42696A patent/IL42696A/en unknown
- 1973-07-26 DE DE19732338061 patent/DE2338061A1/en active Pending
- 1973-07-31 IT IT27320/73A patent/IT992766B/en active
- 1973-08-03 FR FR7328509A patent/FR2195838B1/fr not_active Expired
- 1973-08-03 GB GB3700473A patent/GB1406938A/en not_active Expired
- 1973-08-07 JP JP48088748A patent/JPS49124962A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2338061A1 (en) | 1974-02-21 |
GB1406938A (en) | 1975-09-17 |
IT992766B (en) | 1975-09-30 |
FR2195838A1 (en) | 1974-03-08 |
IL42696A0 (en) | 1973-10-25 |
JPS49124962A (en) | 1974-11-29 |
FR2195838B1 (en) | 1977-02-25 |
US3787747A (en) | 1974-01-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IL42696A (en) | Periodic magnetically focused beam tube | |
US4461688A (en) | Magnetically enhanced sputtering device having a plurality of magnetic field sources including improved plasma trapping device and method | |
US4162954A (en) | Planar magnetron sputtering device | |
US3519854A (en) | Thermionic converter with hall effect collection means | |
JPS60194072A (en) | Cross electromagnetic field diode sputtering target assembly | |
GB1403172A (en) | Miniaturized microwave beam tube | |
EP0276090B1 (en) | Charge-particle collector | |
GB654386A (en) | Improvements in or relating to high frequency electronic discharge devices | |
US2797360A (en) | Travelling wave amplifiers | |
US3324339A (en) | Periodic permanent magnet electron beam focusing arrangement for traveling-wave tubes having plural interaction cavities in bore of each annular magnet | |
US3958147A (en) | Traveling-wave tube with improved periodic permanent magnet focusing arrangement integrated with coupled cavity slow-wave structure | |
GB1451956A (en) | Travelling wave tubes | |
US4597847A (en) | Non-magnetic sputtering target | |
US2651000A (en) | Reflex velocity modulated discharge device | |
CA1160672A (en) | Flat cathode ray tube | |
GB1467487A (en) | X-ray tubes | |
JPS5951446A (en) | Method of varying deflection of locus of charge particle beam | |
US2376707A (en) | Space discharge device | |
JPH0621041A (en) | Planar magnetron sputter device | |
US3896329A (en) | Permanent magnet beam focus structure for linear beam tubes | |
JPS6329786B2 (en) | ||
US3252104A (en) | D.c. quadrupole structure for parametric amplifier | |
US2882439A (en) | Travelling wave tube device | |
US2934666A (en) | Electron gun | |
US3226587A (en) | Cathode ray tube and magnetic deflection means therefor |