EP 0113907 B1 19860416 - LAYER PREVENTING DISTURBANCES CREATED BY SECONDARY-ELECTRON EMISSION, AND MANUFACTURE OF SUCH A LAYER
Title (en)
LAYER PREVENTING DISTURBANCES CREATED BY SECONDARY-ELECTRON EMISSION, AND MANUFACTURE OF SUCH A LAYER
Publication
Application
Priority
DE 3247268 A 19821221
Abstract (en)
[origin: US4559281A] To prevent interference from secondary electron emission, a base member, as of a waveguide, which in operation is exposed to high frequency electric fields is provided with a coating comprising a rough surface layer having a thickness less than its skin depth, and a further layer of high electrical conductivity between said rough layer and said base member, the thickness of said further layer being substantially larger than its skin depth. The rough layer preferably has a ratio of mean depth to mean pitch of its random corrugations substantially larger than 1:2.
IPC 1-7
IPC 8 full level
H01P 11/00 (2006.01); H01J 23/02 (2006.01)
CPC (source: EP US)
H01J 23/02 (2013.01 - EP US); Y10T 428/12882 (2015.01 - EP US); Y10T 428/12889 (2015.01 - EP US); Y10T 428/12993 (2015.01 - EP US)
Citation (examination)
S. RAMO u.a.: "Fields and waves in modern radio", 2. Ausgabe, 1953, John Wiley & Sons, Inc. New York, US, Chapman & Hall, Ltd. London, GB, "Skin effect and circuit impedance elements", Seiten 230-242, 249-251
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0113907 A1 19840725; EP 0113907 B1 19860416; AT E19325 T1 19860515; DE 3247268 C1 19840329; DE 3363101 D1 19860522; JP S59133706 A 19840801; US 4559281 A 19851217
DOCDB simple family (application)
EP 83112926 A 19831221; AT 83112926 T 19831221; DE 3247268 A 19821221; DE 3363101 T 19831221; JP 24307983 A 19831221; US 56305083 A 19831219