GB1368410A - Velocity modulation tube - Google Patents

Velocity modulation tube

Info

Publication number
GB1368410A
GB1368410A GB1825873A GB1825873A GB1368410A GB 1368410 A GB1368410 A GB 1368410A GB 1825873 A GB1825873 A GB 1825873A GB 1825873 A GB1825873 A GB 1825873A GB 1368410 A GB1368410 A GB 1368410A
Authority
GB
United Kingdom
Prior art keywords
resonator
resonator circuit
drift space
velocity
april
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
GB1825873A
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of GB1368410A publication Critical patent/GB1368410A/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

Landscapes

  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1368410 Velocity-modulated tubes NIPPON ELECTRIC CO Ltd 16 April 1973 [18 April 1972] 18258/73 Heading H1D A velocity-modulation tube includes, in order, an input resonator circuit, first and second resonator circuits, and an output resonator circuit, the first resonator circuit having a resonant frequency lower than the centre frequency of the operating pass band, and the normalized length of its immediately succeeding drift space being larger than that immediately succeeding any of the other kinds of resonator circuit, but not being larger than 90 degrees, in terms of the reduced plasma angle. The first resonator circuit may be constituted by a plurality of separate resonators, each separately satisfying the above resonant frequency and drift space condition. Preferably, the first and second resonator circults have resonant frequencies lying respectively below and above the lower and upper edges of the pass band, and the drift spaces may be as indicated on the drawing for the embodiment shown, which has a second resonator circuit formed by two resonators 23 and 26. It is stated that the arrangement permits the electron beam-which tends to be debunched by the action of the gap 20 of the low frequency resonator 19-to be rebunched in the drift space 22 without undue increase in length of the device.
GB1825873A 1972-04-18 1973-04-16 Velocity modulation tube Expired GB1368410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3889772A JPS533225B2 (en) 1972-04-18 1972-04-18

Publications (1)

Publication Number Publication Date
GB1368410A true GB1368410A (en) 1974-09-25

Family

ID=12537980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1825873A Expired GB1368410A (en) 1972-04-18 1973-04-16 Velocity modulation tube

Country Status (6)

Country Link
US (1) US3819977A (en)
JP (1) JPS533225B2 (en)
DE (1) DE2317487C2 (en)
FR (1) FR2180836B1 (en)
GB (1) GB1368410A (en)
NL (1) NL169531C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5169355A (en) * 1974-12-06 1976-06-15 Nippon Electric Co Kokoritsu 4 kudosokudohenchokan
JPS51115768A (en) * 1975-04-03 1976-10-12 Nec Corp Wide-band speed modurated tube
GB1506949A (en) * 1975-12-13 1978-04-12 English Electric Valve Co Ltd Velocity modulation tubes
JPS5851655B2 (en) * 1978-02-02 1983-11-17 日本電気株式会社 multi-cavity klystron
FR2442505A1 (en) * 1978-11-23 1980-06-20 Commissariat Energie Atomique DISSYMMETRICAL ION BEAM GROUPER-UNGROUPER OPERATING IN A WIDE RANGE OF SPEEDS
JPS58186138A (en) * 1982-04-26 1983-10-31 Toshiba Corp Klystron device
US4800322A (en) * 1984-10-23 1989-01-24 Litton Systems, Inc. Broadband klystron cavity arrangement
US4764710A (en) * 1986-11-19 1988-08-16 Varian Associates, Inc. High-efficiency broad-band klystron
FR2666169B1 (en) * 1990-08-24 1992-10-16 Thomson Tubes Electroniques KLYSTRON WITH EXTENDED INSTANT BANDWIDTH.
US5521551A (en) * 1994-11-21 1996-05-28 Ferguson; Patrick E. Method for suppressing second and higher harmonic power generation in klystrons

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298200B (en) * 1960-09-06 1969-06-26 Varian Associates Multi-chamber klystron amplifier tubes with a wide range
US3195007A (en) * 1960-10-28 1965-07-13 Litton Prec Products Inc Stagger-tuned klystron with cavities resonant outside passband
US3622834A (en) * 1970-04-15 1971-11-23 Varian Associates High-efficiency velocity modulation tube employing harmonic prebunching
US3594606A (en) * 1970-04-15 1971-07-20 Varian Associates Velocity modulation tube employing cascaded harmonic prebunching

Also Published As

Publication number Publication date
US3819977A (en) 1974-06-25
DE2317487A1 (en) 1973-11-08
NL169531C (en) 1982-07-16
FR2180836B1 (en) 1977-12-30
JPS533225B2 (en) 1978-02-04
NL169531B (en) 1982-02-16
FR2180836A1 (en) 1973-11-30
JPS492476A (en) 1974-01-10
DE2317487C2 (en) 1984-09-20
NL7305199A (en) 1973-10-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930415