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GB1084472A - Traveling wave tube embodying periodic focusing - Google Patents

Traveling wave tube embodying periodic focusing

Info

Publication number
GB1084472A
GB1084472A GB46743/65A GB4674365A GB1084472A GB 1084472 A GB1084472 A GB 1084472A GB 46743/65 A GB46743/65 A GB 46743/65A GB 4674365 A GB4674365 A GB 4674365A GB 1084472 A GB1084472 A GB 1084472A
Authority
GB
United Kingdom
Prior art keywords
focusing
pass band
periodic
wave tube
nov
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
GB46743/65A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1084472A publication Critical patent/GB1084472A/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

  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)

Abstract

1,084,472. Travelling wave tubes. WESTINGHOUSE ELECTRIC CORPORATION. Nov. 4, 1965 [Nov. 18, 1964], No. 46743/65. Heading H1D. The periodic focusing system of a travelling wave tube has a portion of modified construction at the collector end, to provide a change in the pass band structure of the system, such that the electron beam is transmitted in the first pass band of the first portion of the system, but at the lower edge of the second pass band of the second portion, whereby in the second portion slow electrons which would otherwise extract energy from the signal wave, are defocused and collected on the slow wave structure. The final few periods of the second portion may exhibit a further change of periodicity or of peak field strength, to improve the focusing of the transmitted fast electrons. Application to periodic permanent magnet, electrostatic, and quadrupolar magnetic focusing arrangements is referred to.
GB46743/65A 1964-11-18 1965-11-04 Traveling wave tube embodying periodic focusing Expired GB1084472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US412055A US3398314A (en) 1964-11-18 1964-11-18 Traveling wave tube having means for removing slow electrons from electron beam

Publications (1)

Publication Number Publication Date
GB1084472A true GB1084472A (en) 1967-09-20

Family

ID=23631401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46743/65A Expired GB1084472A (en) 1964-11-18 1965-11-04 Traveling wave tube embodying periodic focusing

Country Status (2)

Country Link
US (1) US3398314A (en)
GB (1) GB1084472A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944469A (en) * 2010-09-06 2011-01-12 安徽华东光电技术研究所 Reversed-field permanent-magnet focusing system for multi-beam millimeter wave traveling-wave tubes and manufacturing method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2739833B2 (en) * 1995-03-31 1998-04-15 日本電気株式会社 Broadband traveling wave tube
WO2006124741A2 (en) * 2005-05-13 2006-11-23 Massachusetts Institute Of Technology Non-axisymmetric periodic permanent magnet focusing system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814779A (en) * 1954-12-14 1957-11-26 Bell Telephone Labor Inc Microwave detector
US3259788A (en) * 1961-01-19 1966-07-05 Nippon Electric Co Magnetic focussing device for an electron tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944469A (en) * 2010-09-06 2011-01-12 安徽华东光电技术研究所 Reversed-field permanent-magnet focusing system for multi-beam millimeter wave traveling-wave tubes and manufacturing method thereof

Also Published As

Publication number Publication date
US3398314A (en) 1968-08-20

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