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GB753999A - Improvements in or relating to travelling wave tubes - Google Patents

Improvements in or relating to travelling wave tubes

Info

Publication number
GB753999A
GB753999A GB6009/54A GB600954A GB753999A GB 753999 A GB753999 A GB 753999A GB 6009/54 A GB6009/54 A GB 6009/54A GB 600954 A GB600954 A GB 600954A GB 753999 A GB753999 A GB 753999A
Authority
GB
United Kingdom
Prior art keywords
wave
helix
cavities
delay line
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
GB6009/54A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB753999A publication Critical patent/GB753999A/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
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised

Landscapes

  • Microwave Tubes (AREA)
  • Microwave Amplifiers (AREA)

Abstract

753,999. Travelling-wave tubes; particle accelerators. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. March 1, 1954 Feb. 27, 1953], No. 6009/54. Class 39 (1). In a travelling-wave tube the delay line comprises a first portion coupled to the input in which the input wave is amplified and a second portion in which the wave velocity is greater than the beam velocity so that the wave is attenuated and gives up most of its energy to the beam, the now highly bunched beam giving up energy to an output cavity resonator. The second portion has such a length that the wave is of negligible amplitude on arriving at the far end thereof. The delay line may be formed by a filter-type circuit, Fig. 1, comprising cavities 6 of the same length dimension and cavities 7 of progressively increasing or at least some being of constant greater length, the output being taken from cavity 10. Alternatively the delay line may be a helix, the first portion of which is of constant pitch and the second portion of which is of progressively increasing pitch, Fig. 2 (not shown). The cavities are coupled by apertures 5 and the difference between the beam and wave velocities in both portions of the line is about 10-20 per cent. In Fig. 2 (not shown), the far end of the helix is earthed and loss material surrounds the centre portion of the helix. A tuning screw may be provided in the output cavity. Specification 660,792 is referred to.
GB6009/54A 1947-04-21 1954-03-01 Improvements in or relating to travelling wave tubes Expired GB753999A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR854378X 1947-04-21
FR75399X 1953-02-27

Publications (1)

Publication Number Publication Date
GB753999A true GB753999A (en) 1956-08-01

Family

ID=31947960

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7654/48A Expired GB660792A (en) 1947-04-21 1948-03-12 Improvements in or relating to electron discharge tube arrangements for use on ultra high frequencies
GB6009/54A Expired GB753999A (en) 1947-04-21 1954-03-01 Improvements in or relating to travelling wave tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB7654/48A Expired GB660792A (en) 1947-04-21 1948-03-12 Improvements in or relating to electron discharge tube arrangements for use on ultra high frequencies

Country Status (5)

Country Link
US (1) US2922920A (en)
CH (1) CH273267A (en)
DE (1) DE956707C (en)
FR (2) FR946141A (en)
GB (2) GB660792A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967968A (en) * 1957-06-24 1961-01-10 Gen Electric Electron discharge device
US3066237A (en) * 1958-12-15 1962-11-27 Hughes Aircraft Co Slow-wave structure
GB2164488A (en) * 1984-09-18 1986-03-19 English Electric Valve Co Ltd Improvements in or relating to coupled cavity travelling wave tubes

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE510746A (en) * 1951-04-19 1900-01-01
US2941112A (en) * 1955-07-25 1960-06-14 Gen Electric Electric discharge device
DE1274742B (en) * 1958-10-02 1968-08-08 Hughes Aircraft Co Traveling field pipes
US3374390A (en) * 1960-09-16 1968-03-19 Varian Associates Traveling-wave tube having a slow-wave structure of the cloverleaf type wherein the height of the cloverleaf sections are tapered
US3324342A (en) * 1963-07-12 1967-06-06 Varian Associates Traveling wave tube having maximum gain and power output at the same beam voltage
US3391299A (en) * 1965-03-01 1968-07-02 Bell Telephone Labor Inc High stability traveling wave tube
US3678326A (en) * 1969-12-23 1972-07-18 Siemens Ag Travelling wave tube having improved efficiency
US3758811A (en) * 1972-08-02 1973-09-11 Raytheon Co Traveling wave tube linearity characteristics
DE2239459C3 (en) * 1972-08-10 1975-04-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Lauffeldtube with extremely low phase distortion
US4053810A (en) * 1976-06-25 1977-10-11 Varian Associates, Inc. Lossless traveling wave booster tube
FR2457560A1 (en) * 1979-05-23 1980-12-19 Thomson Csf MICROWAVE DELAY LINE COMPRISING A VARIABLE SECTION CONDUCTOR AND PROGRESSIVE WAVE TUBE COMPRISING SUCH A LINE
US4315194A (en) * 1980-02-20 1982-02-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Coupled cavity traveling wave tube with velocity tapering
FR2490872A1 (en) * 1980-09-19 1982-03-26 Thomson Csf COUPLED CAVITY DELAY LINE FOR PROGRESSIVE WAVE TUBE AND PROGRESSIVE WAVE TUBE HAVING SUCH A LINE

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637001A (en) * 1953-04-28
US2284751A (en) * 1939-08-31 1942-06-02 Rca Corp Resonant cavity device
US2289952A (en) * 1940-11-28 1942-07-14 Rca Corp Electron gun
US2463267A (en) * 1941-04-26 1949-03-01 Gen Electric High-frequency apparatus
US2543082A (en) * 1943-06-22 1951-02-27 David L Webster Cavity resonator device for production of high-speed electrons
NL78190C (en) * 1946-01-11 Western Electric Co
FR946147A (en) * 1947-04-21 1949-05-24 Cherifienne D Outil Et De Mate Further development of dryer oven rollers
US2630544A (en) * 1948-03-20 1953-03-03 Philco Corp Traveling wave electronic tube
FR994990A (en) * 1949-07-12 1951-11-26 Csf Traveling wave tube with exit cavity and sliding space
US2800606A (en) * 1951-10-26 1957-07-23 Univ Leland Stanford Junior Space charge wave amplifiers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967968A (en) * 1957-06-24 1961-01-10 Gen Electric Electron discharge device
US3066237A (en) * 1958-12-15 1962-11-27 Hughes Aircraft Co Slow-wave structure
GB2164488A (en) * 1984-09-18 1986-03-19 English Electric Valve Co Ltd Improvements in or relating to coupled cavity travelling wave tubes
US4709186A (en) * 1984-09-18 1987-11-24 English Electric Valve Company Limited Coupled cavity travelling wave tubes

Also Published As

Publication number Publication date
GB660792A (en) 1951-11-14
FR946141A (en) 1949-05-24
DE956707C (en) 1957-01-24
CH273267A (en) 1951-01-31
FR63878E (en) 1955-10-13
US2922920A (en) 1960-01-26

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