GB793665A - Improvements in or relating to electron discharge tubes - Google Patents

Improvements in or relating to electron discharge tubes

Info

Publication number
GB793665A
GB793665A GB802656A GB802656A GB793665A GB 793665 A GB793665 A GB 793665A GB 802656 A GB802656 A GB 802656A GB 802656 A GB802656 A GB 802656A GB 793665 A GB793665 A GB 793665A
Authority
GB
United Kingdom
Prior art keywords
velocity
wave
reduced
deamplification
travelling
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
GB802656A
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 AG
Original Assignee
Telefunken AG
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 AG filed Critical Telefunken AG
Publication of GB793665A publication Critical patent/GB793665A/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
    • H01J23/06—Electron or ion guns
    • 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
    • H01J23/06—Electron or ion guns
    • H01J23/065—Electron or ion guns producing a solid cylindrical beam

Landscapes

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

Abstract

793,665. Travelling-wave tubes. TELEFUNKEN GES. March 14, 1956 [March 19, 1955], No. 8026/56. Class 39(1). In a travelling-wave tube in which the current component of the noise fluctuation is reduced by the known " space-charge-deamplification " principle, the velocity component of the fluctuation is simultaneously reduced by providing in the space-charge region velocity-selection means which ensure that only electrons of a limited range of velocity pass on to the wave interaction region. As shown the helix 1, Fig. 1, is spaced from the face 9 of the gun assembly a distance giving optimum deamplification of the current wave as described in " R.C.A. Review " June 1954, pages 252-267. Within the gun assembly is a 90‹ velocity selector consisting of curved deflecting plates 7, 71 which acts on the electrons after they have been accelerated to about 10 volts by screen 6. Other forms of selector include a 127‹ deflector, Fig. 2 (not shown), a magnetic multiple screen arrangement, Fig. 4 (not shown) and a focussing type consisting of an annular aperture 13, Fig. 3, through which the beam is focussed by magnetic field M. Positive-ion bombardment of the cathode is reduced.
GB802656A 1955-03-19 1956-03-14 Improvements in or relating to electron discharge tubes Expired GB793665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET10716A DE1031432B (en) 1955-03-19 1955-03-19 Low-noise electrical discharge tubes for amplifying very short electromagnetic waves, in which a flow of electrons interacts with the field of these waves

Publications (1)

Publication Number Publication Date
GB793665A true GB793665A (en) 1958-04-23

Family

ID=7546476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB802656A Expired GB793665A (en) 1955-03-19 1956-03-14 Improvements in or relating to electron discharge tubes

Country Status (4)

Country Link
DE (1) DE1031432B (en)
FR (1) FR1147591A (en)
GB (1) GB793665A (en)
NL (1) NL205488A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2270416A (en) * 1992-08-25 1994-03-09 Specs Ges Fuer Oberflaechenana Charged particles analyser

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB716707A (en) * 1951-01-04 1954-10-13 English Electric Valve Co Ltd Improvements in or relating to electron discharge devices with thermionic cathodes
AT180108B (en) * 1952-06-12 1954-11-10 Western Electric Co Electron tube for microwaves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2270416A (en) * 1992-08-25 1994-03-09 Specs Ges Fuer Oberflaechenana Charged particles analyser

Also Published As

Publication number Publication date
FR1147591A (en) 1957-11-27
NL205488A (en)
DE1031432B (en) 1958-06-04

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