GB549795A - Improvements in or relating to electron velocity modulation discharge tubes - Google Patents

Improvements in or relating to electron velocity modulation discharge tubes

Info

Publication number
GB549795A
GB549795A GB6933/41A GB693341A GB549795A GB 549795 A GB549795 A GB 549795A GB 6933/41 A GB6933/41 A GB 6933/41A GB 693341 A GB693341 A GB 693341A GB 549795 A GB549795 A GB 549795A
Authority
GB
United Kingdom
Prior art keywords
tube
grids
velocity modulation
bunching
projected
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
GB6933/41A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB549795A publication Critical patent/GB549795A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators

Abstract

549,795. Velocity-modulated tubes. STANDARD TELEPHONES & CABLES, Ltd. May 30, 1941, No. 6933. Convention date, Aug. 27, 1940. [Class 39 (i)] In a velocity modulation electron discharge tube of the kind in which the electron beam is projected successively through two resonant chambers separated by a drift space in which bunching of the electrons occurs, the beam is projected through grids occupying circular openings in the resonators and is of hollow form having a wall thickness not exceeding one-tenth of the operating wave length, so that the central portions of the grids are not traversed by the electrons. This ensures that the modulating field strength does not vary by more than 5 per cent over the whole cross section of the beam, so affording sufficiently uniform velocity modulation for satisfactory bunching. The tube shown comprises a cathode having an annular emitting surface 21 providing a hollow electron beam of the desired radial thickness which passes through grids 12, 13, 16, 17 associated with resonant chambers 11, 15 and a drift tube 14. The tube may be used as an amplifier, or as an oscillator by connecting the leads 20, 22 to the chambers 11, 15. The Specification as open to inspection under Sect. 91 also describes a tube with a solid beam the diameter of which is determined by similar considerations. This subject-matter does not appear in the Specification as accepted.
GB6933/41A 1940-08-27 1941-05-30 Improvements in or relating to electron velocity modulation discharge tubes Expired GB549795A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354359A US2316264A (en) 1940-08-27 1940-08-27 Control system for velocity modulation tubes

Publications (1)

Publication Number Publication Date
GB549795A true GB549795A (en) 1942-12-07

Family

ID=23392972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6933/41A Expired GB549795A (en) 1940-08-27 1941-05-30 Improvements in or relating to electron velocity modulation discharge tubes

Country Status (2)

Country Link
US (1) US2316264A (en)
GB (1) GB549795A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574012A (en) * 1942-09-15 1951-11-06 Csf Electron discharge tube and circuit arrangement therefor
US2466064A (en) * 1943-06-28 1949-04-05 Sperry Corp Velocity modulation apparatus
US2459792A (en) * 1944-07-08 1949-01-25 Standard Telephones Cables Ltd Beam type electron discharge device
US2547372A (en) * 1945-09-25 1951-04-03 Rca Corp Grid-controlled electron discharge device
US2967260A (en) * 1957-05-31 1961-01-03 Eitel Mccullough Inc Electron tube
DE2010480C3 (en) * 1970-03-05 1973-11-22 Siemens Ag, 1000 Berlin U. 8000 Muenchen High performance klystron

Also Published As

Publication number Publication date
US2316264A (en) 1943-04-13

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