EP 0038249 B1 19880706 - MULTI-STAGE DEPRESSED COLLECTOR FOR A MICROWAVE TUBE
Title (en)
MULTI-STAGE DEPRESSED COLLECTOR FOR A MICROWAVE TUBE
Publication
Application
Priority
FR 8008392 A 19800415
Abstract (en)
[origin: US4398122A] The present invention relates to multistage vacuum collectors for ultra-high frequency tubes. Each electrode of the collector comprises two walls which are axially symmetrical with respect to the beam propagation axis and which are superimposed along said axis. The retarding path of the electrons due to the decreasing potentials of the electrodes is thus located in a small volume space between the facing walls of two adjacent electrodes. A plurality of permanent magnets positioned outside the vacuum enclosure above the final electrode produce an asymmetrical magnetic field with respect to the propagation axis. Application to travelling-wave tubes and klystrons.
IPC 1-7
IPC 8 full level
H01J 23/027 (2006.01)
CPC (source: EP US)
H01J 23/0275 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0038249 A1 19811021; EP 0038249 B1 19880706; DE 3176808 D1 19880811; FR 2480497 A1 19811016; FR 2480497 B1 19821119; JP S56165248 A 19811218; US 4398122 A 19830809
DOCDB simple family (application)
EP 81400541 A 19810403; DE 3176808 T 19810403; FR 8008392 A 19800415; JP 5617981 A 19810414; US 25412881 A 19810414