EP0037309B1 - Tube à ondes progressives à cavités couplées et focalisation par aimants permanents alternés, et ensemble amplificateur comprenant un tel tube - Google Patents

Tube à ondes progressives à cavités couplées et focalisation par aimants permanents alternés, et ensemble amplificateur comprenant un tel tube Download PDF

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Publication number
EP0037309B1
EP0037309B1 EP81400418A EP81400418A EP0037309B1 EP 0037309 B1 EP0037309 B1 EP 0037309B1 EP 81400418 A EP81400418 A EP 81400418A EP 81400418 A EP81400418 A EP 81400418A EP 0037309 B1 EP0037309 B1 EP 0037309B1
Authority
EP
European Patent Office
Prior art keywords
cavities
tube
axis
collars
collar
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
EP81400418A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0037309A1 (fr
Inventor
Georges Fleury
Francis Payen
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
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0037309A1 publication Critical patent/EP0037309A1/fr
Application granted granted Critical
Publication of EP0037309B1 publication Critical patent/EP0037309B1/fr
Expired legal-status Critical Current

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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
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24—Slow-wave structures, e.g. delay systems
    • 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

Definitions

  • the thermal conductivity of soft iron being approximately 6 times lower than that of copper
  • the thermal resistance between the bundle and the cooling circuit of the tube is at least 6 times higher when polar masses are incorporated in the walls of the cavities.
  • the continuous power which it is possible to apply to the tube and, consequently, the maximum high frequency (HF) power available at the output of such a tube is significantly lower than in the case of focusing by solenoid.
  • the high frequencies in question are those corresponding to decimetric and centimeter waves; they range from a few gigahertz to more than 10 gigahertz.
  • the increase in the diameter of the beam can be such, under the influence in particular of the high-frequency field of the cavities, that their beaks melt under the impact of the intercepted electrons. This imperatively limits the power applied to the tube.
  • the subject of the invention is a traveling wave tube focused by permanent magnets and pole pieces having a structure which makes it possible to avoid, or at least appreciably reduce, the above drawback with regard to the maximum power applicable to the tube. .

Landscapes

  • Microwave Tubes (AREA)
EP81400418A 1980-04-01 1981-03-18 Tube à ondes progressives à cavités couplées et focalisation par aimants permanents alternés, et ensemble amplificateur comprenant un tel tube Expired EP0037309B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8007294 1980-04-01
FR8007294A FR2479558A1 (fr) 1980-04-01 1980-04-01 Tube a ondes progressives a cavites couplees et focalisation par aimants permanents alternes, et ensemble amplificateur comprenant un tel tube

Publications (2)

Publication Number Publication Date
EP0037309A1 EP0037309A1 (fr) 1981-10-07
EP0037309B1 true EP0037309B1 (fr) 1983-12-28

Family

ID=9240394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400418A Expired EP0037309B1 (fr) 1980-04-01 1981-03-18 Tube à ondes progressives à cavités couplées et focalisation par aimants permanents alternés, et ensemble amplificateur comprenant un tel tube

Country Status (4)

Country Link
US (1) US4399389A (enrdf_load_stackoverflow)
EP (1) EP0037309B1 (enrdf_load_stackoverflow)
DE (1) DE3161746D1 (enrdf_load_stackoverflow)
FR (1) FR2479558A1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528626A2 (fr) * 1978-12-29 1983-12-16 Thomson Csf Generateur d'ondes radioelectriques pour hyperfrequence
FR2490872A1 (fr) * 1980-09-19 1982-03-26 Thomson Csf Ligne a retard a cavites couplees pour tube a ondes progressives et tube a ondes progressives comportant une telle ligne
DE3248693A1 (de) * 1982-12-30 1984-07-05 Siemens AG, 1000 Berlin und 8000 München Wanderfeldroehre mit periodisch-permanentmagnetischem fokussiersystem
US4942336A (en) 1988-04-18 1990-07-17 Kurt Amboss Traveling-wave tube with confined-flow periodic permanent magnet focusing
FR2687840A1 (fr) * 1992-02-21 1993-08-27 Thomson Tubes Electroniques Tube hyperfrequence a focalisateur allege.
US5332947A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. Integral polepiece RF amplification tube for millimeter wave frequencies
US5378988A (en) * 1993-01-22 1995-01-03 Pulyer; Yuly M. MRI system having high field strength open access magnet
US5319339A (en) * 1993-03-08 1994-06-07 The United States Of America As Represented By The Secretary Of The Army Tubular structure having transverse magnetic field with gradient
US8049182B2 (en) * 2010-01-12 2011-11-01 Oxford Instruments Nanotechnology Tools Limited Charged particle filter
KR101919417B1 (ko) * 2012-02-07 2018-11-19 삼성전자주식회사 다중 터널을 갖는 전자기파 발진기 및 상기 전자기파 발진기를 포함하는 전자기파 발생 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925519A (en) * 1954-08-26 1960-02-16 Bell Telephone Labor Inc Traveling wave tube
FR1415052A (fr) * 1963-10-29 1965-10-22 Litton Industries Inc Amplificateur d'ondes progressant dans le sens direct, à large bande
FR1536660A (fr) * 1966-09-29 1968-08-16 Gen Electric Amplificateur biconique à période logarithmique
DE1296711B (de) * 1963-07-31 1969-06-04 Siemens Ag Lauffeldroehre hoher Leistung, insbesondere fuer Dezimeterwellenbetrieb
FR2304171A2 (fr) * 1973-02-16 1976-10-08 English Electric Valve Co Ltd Tube a ondes progressives

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256561A (en) * 1916-05-15 1918-02-19 Motorcycle Sweeper Company Street-sweeper.
NL100798C (enrdf_load_stackoverflow) * 1958-03-12
US3324339A (en) * 1964-02-27 1967-06-06 Hughes Aircraft Co Periodic permanent magnet electron beam focusing arrangement for traveling-wave tubes having plural interaction cavities in bore of each annular magnet
FR1418392A (fr) * 1964-02-27 1965-11-19 Hughes Aircraft Co Dispositif de concentration de faisceau électronique à aimants permanents périodiques pour tubes à ondes progressives
US3527976A (en) * 1966-09-29 1970-09-08 Gen Electric Log periodic electron discharge device
GB1451956A (en) * 1973-02-16 1976-10-06 English Electric Valve Co Ltd Travelling wave tubes
US4057748A (en) * 1975-03-08 1977-11-08 English Electric Valve Company Ltd. Travelling wave tubes
US3958147A (en) * 1975-06-06 1976-05-18 Hughes Aircraft Company Traveling-wave tube with improved periodic permanent magnet focusing arrangement integrated with coupled cavity slow-wave structure
US4103207A (en) * 1977-03-11 1978-07-25 Litton Systems, Inc. Coupled cavity type traveling wave tube having improved pole piece structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925519A (en) * 1954-08-26 1960-02-16 Bell Telephone Labor Inc Traveling wave tube
DE1296711B (de) * 1963-07-31 1969-06-04 Siemens Ag Lauffeldroehre hoher Leistung, insbesondere fuer Dezimeterwellenbetrieb
FR1415052A (fr) * 1963-10-29 1965-10-22 Litton Industries Inc Amplificateur d'ondes progressant dans le sens direct, à large bande
FR1536660A (fr) * 1966-09-29 1968-08-16 Gen Electric Amplificateur biconique à période logarithmique
FR2304171A2 (fr) * 1973-02-16 1976-10-08 English Electric Valve Co Ltd Tube a ondes progressives

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
INTERNATIONAL ELECTRON DEVICE MEETING, 5-7 décembre 1977 New York, US ESTRELLA et al.: "X-Band TWT with high efficiency and high PRF capability", pages 351-353 *

Also Published As

Publication number Publication date
FR2479558A1 (fr) 1981-10-02
FR2479558B1 (enrdf_load_stackoverflow) 1983-08-19
US4399389A (en) 1983-08-16
DE3161746D1 (en) 1984-02-02
EP0037309A1 (fr) 1981-10-07

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