EP 0037309 B1 19831228 - TRAVELLING-WAVE TUBE WITH COUPLED CAVITIES AND WITH PERIODIC PERMANENT MAGNET FOCUSSING, AND AMPLIFIER UNIT WITH SUCH A TUBE
Title (en)
TRAVELLING-WAVE TUBE WITH COUPLED CAVITIES AND WITH PERIODIC PERMANENT MAGNET FOCUSSING, AND AMPLIFIER UNIT WITH SUCH A TUBE
Publication
Application
Priority
FR 8007294 A 19800401
Abstract (en)
[origin: US4399389A] In a travelling wave tube in which the delay line (1) is constituted by a sequence of double resonator cavities (15) alternating with the pole pieces (3) of the focusing system, the invention provides for the purpose of limiting the interception of electrons by the line an increase in the diameter of the magnetic material collars (30, 40) terminating said pieces, as well as the wall (16) of the cavities on the side of the tube axis. This increase takes place in stages, a collar (40) having the same diameter as the collar (30) which follows it in the beam propagation direction.
IPC 1-7
IPC 8 full level
H01J 23/087 (2006.01); H01J 23/24 (2006.01)
CPC (source: EP US)
H01J 23/087 (2013.01 - EP US); H01J 23/24 (2013.01 - EP US)
Citation (examination)
- FR 2304171 A2 19761008 - ENGLISH ELECTRIC VALVE CO LTD [GB]
- DE 1296711 B 19690604 - SIEMENS AG
- US 2925519 A 19600216 - CUTLER CASSIUS C
- FR 1415052 A 19651022 - LITTON INDUSTRIES INC
- FR 1536660 A 19680816 - GEN ELECTRIC
- 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
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0037309 A1 19811007; EP 0037309 B1 19831228; DE 3161746 D1 19840202; FR 2479558 A1 19811002; FR 2479558 B1 19830819; US 4399389 A 19830816
DOCDB simple family (application)
EP 81400418 A 19810318; DE 3161746 T 19810318; FR 8007294 A 19800401; US 24831781 A 19810327