FR1222013A - Magnetic focusing device for traveling wave tubes - Google Patents

Magnetic focusing device for traveling wave tubes

Info

Publication number
FR1222013A
FR1222013A FR789210A FR789210A FR1222013A FR 1222013 A FR1222013 A FR 1222013A FR 789210 A FR789210 A FR 789210A FR 789210 A FR789210 A FR 789210A FR 1222013 A FR1222013 A FR 1222013A
Authority
FR
France
Prior art keywords
traveling wave
focusing device
wave tubes
magnetic focusing
tubes
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
FR789210A
Other languages
French (fr)
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co Ltd
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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Application granted granted Critical
Publication of FR1222013A publication Critical patent/FR1222013A/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
FR789210A 1958-03-12 1959-03-12 Magnetic focusing device for traveling wave tubes Expired FR1222013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7938/58A GB834958A (en) 1958-03-12 1958-03-12 Improvements in or relating to magnetic focusing systems for travelling wave tubes

Publications (1)

Publication Number Publication Date
FR1222013A true FR1222013A (en) 1960-06-07

Family

ID=9842670

Family Applications (1)

Application Number Title Priority Date Filing Date
FR789210A Expired FR1222013A (en) 1958-03-12 1959-03-12 Magnetic focusing device for traveling wave tubes

Country Status (5)

Country Link
US (1) US2965782A (en)
DE (1) DE1189206B (en)
FR (1) FR1222013A (en)
GB (1) GB834958A (en)
NL (2) NL237015A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106659A (en) * 1959-03-24 1963-10-08 Kearfott Company Inc Microwave tube construction
US3259788A (en) * 1961-01-19 1966-07-05 Nippon Electric Co Magnetic focussing device for an electron tube
US3353056A (en) * 1964-04-24 1967-11-14 Gen Electric Electron beam focusing system including a magnetically permeable shield enclosing theelectron gun permanent magnet
GB1538430A (en) * 1975-04-03 1979-01-17 English Electric Valve Co Ltd Travelling wave tubes
FR2479558A1 (en) * 1980-04-01 1981-10-02 Thomson Csf PROGRESSIVE WAVE TUBE WITH COUPLED CAVITIES AND FOCUSING BY ALTERNATE PERMANENT MAGNETS, AND AMPLIFIER ASSEMBLY COMPRISING SUCH A TUBE
DE3015231A1 (en) * 1980-04-21 1981-10-22 Siemens AG, 1000 Berlin und 8000 München HIKING FIELD TUBES WITH PERIODIC-PERMANENT-MAGNETIC FOCUSING SYSTEM
CN114256040B (en) * 2021-12-23 2023-03-14 电子科技大学 Novel traveling wave tube slow wave structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071237B (en) * 1953-04-29
US2844754A (en) * 1953-04-29 1958-07-22 Bell Telephone Labor Inc Electron beam focusing system
US2867745A (en) * 1953-10-07 1959-01-06 Bell Telephone Labor Inc Periodic magnetic focusing system
NL198576A (en) * 1954-08-26
NL200862A (en) * 1954-10-04
BE545514A (en) * 1954-11-12
NL99653C (en) * 1956-03-01

Also Published As

Publication number Publication date
NL237015A (en)
NL100798C (en)
DE1189206B (en) 1965-03-18
US2965782A (en) 1960-12-20
GB834958A (en) 1960-05-11

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