EP 0982754 A1 20000301 - Self-biasing collector elements for linear-beam microwave tubes
Title (en)
Self-biasing collector elements for linear-beam microwave tubes
Title (de)
Selbstpolarisierende Kollektorelemente für Linearstrahl-Mikrowellenröhre
Title (fr)
Eléments collecteurs auto-polarisants pour tubes à micro-ondes à faisceau rectiligne
Publication
Application
Priority
EP 98116081 A 19980826
Abstract (en)
A self biasing element (102) is formed by coupling an electron accumulator (104) to a collector stage (106) of a linear-beam microwave tube with a base (112) which has a selected resistance. The electron accumulator has a secondary emission coefficient less than one and is positioned to intercept a portion of the electrons in the electron beam of the linear-beam microwave tube. The electron accumulator thus acquires a negative voltage whose magnitude is controlled by selecting the base resistance and the radial and axial position of the self biasing element within the collector. Various arrangements of self biasing elements and collector stages are disclosed which improve the efficiency and RF performance of the microwave tube. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 23/027 (2006.01)
CPC (source: EP)
H01J 23/027 (2013.01)
Citation (search report)
- [A] FR 2742580 A1 19970620 - THOMSON CSF [FR]
- [A] "Graphite Multistage Depressed Collector for Microwave Tubes", NASA TECH BRIEFS., no. 164, March 1988 (1988-03-01), Springfields, VA, USA, XP002084136
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0982754 A1 20000301; EP 0982754 B1 20040421; DE 69823348 D1 20040527; DE 69823348 T2 20050324
DOCDB simple family (application)
EP 98116081 A 19980826; DE 69823348 T 19980826