EP 1680799 A2 20060719 - LOW SPURIOUS RADIATION MICROWAVE TUBE
Title (en)
LOW SPURIOUS RADIATION MICROWAVE TUBE
Title (de)
MIKROWELLENRÖHRE MIT GERINGER STÖRSTRAHLUNG
Title (fr)
TUBE HYPERFREQUENCE A FAIBLE RAYONNEMENT PARASITE
Publication
Application
Priority
- EP 2004050557 W 20040416
- FR 0305509 A 20030506
Abstract (en)
[origin: WO2004100204A2] The invention concerns a microwave tube comprising an electron gun (12) generating an electronic beam (20) in a cylindrical microwave structure (14, 50) of the tube. The microwave structure provides at an output a hyperfrequency wave. A collector (16, 58, 82, 96) of the beam electrons comprising at least one electrode is mechanically connected to the microwave structure through a dielectric (62, 94), the mechanical connection forming a radial guide for propagating the spurious microwave radiation (Pr) of the tube. In order to attenuate the spurious radiation of the tube, the radial guide (Gd) comprises at least one quarter wave microwave having, at least at the tube operating frequency F, an open circuit for the hyperfrequency wave propagated in said radial guide for propagation of spurious radiation. The invention is applicable to microwave tubes, in particular klystrons, travelling-wave tubes and the like.
IPC 1-7
IPC 8 full level
H01J 23/54 (2006.01); H01J 23/16 (2006.01)
CPC (source: EP US)
H01J 23/16 (2013.01 - EP US); H01J 23/54 (2013.01 - EP US)
Citation (search report)
See references of WO 2004100204A2
Designated contracting state (EPC)
GB
DOCDB simple family (publication)
FR 2854728 A1 20041112; FR 2854728 B1 20050729; EP 1680799 A2 20060719; EP 1680799 B1 20091202; JP 2007527092 A 20070920; JP 4499093 B2 20100707; US 2007046384 A1 20070301; US 7459855 B2 20081202; WO 2004100204 A2 20041118; WO 2004100204 A3 20080703
DOCDB simple family (application)
FR 0305509 A 20030506; EP 04741472 A 20040416; EP 2004050557 W 20040416; JP 2006505559 A 20040416; US 55565304 A 20040416