Global Patent Index - EP 1095390 A1

EP 1095390 A1 2001-05-02 - MULTIBEAM ELECTRONIC TUBE WITH MAGNETIC FIELD FOR CORRECTING BEAM TRAJECTORY

Title (en)

MULTIBEAM ELECTRONIC TUBE WITH MAGNETIC FIELD FOR CORRECTING BEAM TRAJECTORY

Title (de)

MEHRSTRAHLELEKTRONENRÖHRE MIT MAGNETISCHEM STRAHLENBAHNKORREKTURFELD

Title (fr)

TUBE ELECTRONIQUE MULTIFAISCEAU AVEC CHAMP MAGNETIQUE DE CORRECTION DE TRAJECTOIRE DES FAISCEAUX

Publication

EP 1095390 A1 (FR)

Application

EP 99929381 A

Priority

  • FR 9901595 W
  • FR 9808552 A

Abstract (en)

[origin: FR2780809A1] The invention concerns a multibeam electronic tube with several substantially parallel electron beams (1-7), passing through a body (10). Some (2-7) of the beams (1-7) at least define an interbeam volume (22), each beam (2-7) defining the interbeam volume (22) is subjected to a disturbing azimuthal magnetic field (B theta ) induced by all the others. The tube comprises means (M) allowing, in at least one conducting element (23) located in the interbeam volume (22), a counter current (l') to circulate in a direction opposite to that of the current (l) of the beams (1-7), said counter current (l') generating at the beams (2-7) defining the interbeam volume (22), a corrective magnetic field for countering the disturbing magnetic field (B theta ). The invention is applicable to travelling-wave tubes or multibeam klystrons.

IPC 1-7 (main, further and additional classification)

H01J 23/09; H01J 25/00

IPC 8 full level (invention and additional information)

H01J 23/087 (2006.01); H01J 23/09 (2006.01); H01J 25/02 (2006.01); H01J 25/34 (2006.01)

CPC (invention and additional information)

H01J 23/09 (2013.01); H01J 2225/10 (2013.01); H01J 2225/36 (2013.01)

Citation (search report)

See references of WO 0002226A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

FR 2780809 A1 20000107; FR 2780809 B1 20031107; CN 1308769 A 20010815; DE 69925125 D1 20050609; EP 1095390 A1 20010502; EP 1095390 B1 20050504; JP 2002520772 A 20020709; JP 4405674 B2 20100127; KR 100593845 B1 20060628; US 6486605 B1 20021126; WO 0002226 A1 20000113

INPADOC legal status


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