GB980119A - Periodic magnetic focusing arrangements for electron beam tubes - Google Patents

Periodic magnetic focusing arrangements for electron beam tubes

Info

Publication number
GB980119A
GB980119A GB4826/62A GB482663A GB980119A GB 980119 A GB980119 A GB 980119A GB 4826/62 A GB4826/62 A GB 4826/62A GB 482663 A GB482663 A GB 482663A GB 980119 A GB980119 A GB 980119A
Authority
GB
United Kingdom
Prior art keywords
polepiece
electron beam
feb
polepieces
magnetic focusing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4826/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB980119A publication Critical patent/GB980119A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)

Abstract

980,119. Travelling wave tubes. TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT m.b.H. Feb. 6, 1963 [Feb. 23, 1962], No. 4826/63. Heading H1D. A periodic focusing arrangement, e.g. for travelling wave tubes, comprises a plurality of annular magnets 1, Fig. 1, arranged coaxially in relation to one another and separated by ferromagnetic polepieces 2 of alternate polarity, wherein the polepieces of like polarity are connected together by at least one ferromagnetic yoke 4. The annular magnets may be permanent magnets or electromagnets, and each polepiece has at least one web 3 for contacting the yoke. For feeding in high-frequency oscillations, Fig. 3, a resonant cavity 31 is sandwiched between a polepiece 37 and a radially magnetized element 32 provided with a polepiece 39 which thereby minimises distortions of the magnetic field due to the presence of the cavity resonator 31. For further influencing the focusing field, an adjustable magnetic shunt 33 is provided adjacent magnet 32.
GB4826/62A 1962-02-23 1963-02-06 Periodic magnetic focusing arrangements for electron beam tubes Expired GB980119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET21644A DE1246891B (en) 1962-02-23 1962-02-23 Magnetic focusing arrangement for the bundled guidance of an electron beam, especially for traveling wave tubes

Publications (1)

Publication Number Publication Date
GB980119A true GB980119A (en) 1965-01-13

Family

ID=7550202

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4826/62A Expired GB980119A (en) 1962-02-23 1963-02-06 Periodic magnetic focusing arrangements for electron beam tubes

Country Status (3)

Country Link
US (1) US3188533A (en)
DE (1) DE1246891B (en)
GB (1) GB980119A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334264A (en) * 1963-07-01 1967-08-01 Gen Electric Beam focusing magnet system
DE3014404C2 (en) * 1979-04-11 1985-04-18 Nippon Electric Co., Ltd., Tokio/Tokyo Lauffeldtube
DE3015231A1 (en) * 1980-04-21 1981-10-22 Siemens AG, 1000 Berlin und 8000 München HIKING FIELD TUBES WITH PERIODIC-PERMANENT-MAGNETIC FOCUSING SYSTEM
US5332947A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. Integral polepiece RF amplification tube for millimeter wave frequencies
US5332948A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. X-z geometry periodic permanent magnet focusing system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844754A (en) * 1953-04-29 1958-07-22 Bell Telephone Labor Inc Electron beam focusing system
NL99653C (en) * 1956-03-01
FR1212354A (en) * 1957-10-10 1960-03-23 Thomson Houston Comp Francaise High frequency energy exchange device
US2991382A (en) * 1958-03-20 1961-07-04 Nippon Electric Co Electron beam tube focusing device

Also Published As

Publication number Publication date
DE1246891B (en) 1967-08-10
US3188533A (en) 1965-06-08

Similar Documents

Publication Publication Date Title
GB504802A (en) Improvements in or relating to permanent magnet devices for producing axially symmetrical magnetic fields
GB754563A (en) Arrangement for magnetic concentration of an electron beam in a travelling wave tube
GB515308A (en) Improvements in or relating to magnetic electron lenses
GB977270A (en) Improvements in and relating to apparatus for producing magnetic fields
GB1110172A (en) Improvements in or relating to magnet structures
GB980119A (en) Periodic magnetic focusing arrangements for electron beam tubes
GB1083693A (en) Improvements in or relating to magnetic focussing arrangements of the kind comprising an electric beam discharge tube
GB786988A (en) Improvements in or relating to electron tube arrangements including magnetic focussing systems
GB945610A (en) Velocity modulated discharge devices with magnetic beam focusing
GB865725A (en) Improvements in or relating to magnetic focusing systems for travelling-wave tubes
GB1049920A (en) High frequency electron discharge device having improved permanent magnetic focusing
GB1177947A (en) Improvements in or relating to a Travelling-Wave Tube Amplifier
GB1102173A (en) Improvements in or relating to electron beam periodic magnet focussing arrangements
GB649273A (en) Improvements in or relating to electron velocity modulation apparatus
GB792020A (en) Improvements in or relating to the magnetic focusing of electron beams
ES463367A1 (en) Device for the magnetic deflection of electron beams
GB1102719A (en) Improvements in or relating to electron beam periodic magnetic focussing systems
US3133226A (en) Magnetic structure for traveling wave tubes
GB1020141A (en)
GB1031844A (en) Magnetic focusing device for an electron tube
GB770133A (en) Improvements in or relating to permanent magnets
GB940055A (en) Permanent magnet electron-beam focussing arrangements
GB929793A (en) Magnetic focussing device
GB1073297A (en) Permanent magnet focused klystron
GB1143311A (en) Improvements in or relating to electron beam magnetic focussing systems