EP 0903806 A3 19990331 -
Publication
Application
Priority
DE 19732569 A 19970729
Abstract (en)
[origin: DE19732569A1] The individual layers comprise different dielectric and/or magnetic properties. The filter plate is located in a signal path of a HF transmission path at a point, at which the HF signal is not passed through a waveguide. The thickness, permittivity, and permeability of the individual layers are so chosen that the signal wave passes through the filter plate almost unattenuated, while at least the first, but possibly also further harmonics are reflected. The dimensions of the filter plate, except the thickness, are more than four wavelength of the signal wave by propagation through air.
IPC 1-7
IPC 8 full level
H01Q 15/14 (2006.01); H01Q 15/23 (2006.01); H01Q 17/00 (2006.01); H01Q 19/08 (2006.01)
CPC (source: EP)
H01Q 15/14 (2013.01); H01Q 15/23 (2013.01); H01Q 17/001 (2013.01); H01Q 19/08 (2013.01)
Citation (search report)
- [X] US 4864321 A 19890905 - SUREAU JEAN-CLAUDE [US]
- [X] US 5563614 A 19961008 - ALDEN ADRIAN W [CA], et al
- [X] US 5455594 A 19951003 - BLASING RAYMOND R [US], et al
- [DXA] DE 3601553 A1 19870723 - LICENTIA GMBH [DE]
- [A] US 4343002 A 19820803 - LUH HOWARD H
- [DA] DE 19607934 C1 19970710 - DAIMLER BENZ AEROSPACE AG [DE]
- [A] US 3842421 A 19741015 - ROOTSEY J, et al
- [A] US 3698001 A 19721010 - KOYAMA MASAKI, et al
- [A] US 5471180 A 19951128 - BROMMER KARL [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19732569 A1 19990218; EP 0903806 A2 19990324; EP 0903806 A3 19990331
DOCDB simple family (application)
DE 19732569 A 19970729; EP 98113850 A 19980724