EP 0897197 A3 19991208 - Polarisation branch for two different frequency bands
Title (en)
Polarisation branch for two different frequency bands
Title (de)
Polarisationweiche für zwei unterschiedliche Frequenzbänder
Title (fr)
Aiguillage de polarisation pour deux bandes de fréquence différentes
Publication
Application
Priority
DE 19734854 A 19970812
Abstract (en)
[origin: EP0897197A2] The arrangement has a hollow conductor section receiving two mutually perpendicular, linearly polarised waves per frequency band. Each band has two hollow conductors connected to the hollow conductor section. The higher band conductors have two arms (18-21). At both connection points (11,12) for the two arms the broad flat sides are in direct contact and their ends are flushed together for connecting each hollow conductor. One (19,21) of each pair of arms is twisted through 180 degrees
IPC 1-7
IPC 8 full level
H01P 1/213 (2006.01)
CPC (source: EP US)
H01P 1/2131 (2013.01 - EP US)
Citation (search report)
- [A] GB 2188493 A 19870930 - ERA PATENTS LTD
- [A] FR 2518822 A1 19830624 - VITALINK COMMUNICATIONS CORP [US]
- [A] BOIFOT A M: "CLASSIFICATION OF ORTHO-MODE TRANSDUCERS", EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS AND RELATED TECHNOLOGIES, vol. 2, no. 5, 1 September 1991 (1991-09-01), pages 35 - 42, XP000266379, ISSN: 1120-3862
- [A] PATENT ABSTRACTS OF JAPAN vol. 8, no. 261 (E - 281) 30 November 1984 (1984-11-30)
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)
EP 0897197 A2 19990217; EP 0897197 A3 19991208; AU 738933 B2 20010927; AU 7894898 A 19990225; BR 9803137 A 19991103; DE 19734854 A1 19990218; US 6181222 B1 20010130
DOCDB simple family (application)
EP 98401804 A 19980717; AU 7894898 A 19980810; BR 9803137 A 19980811; DE 19734854 A 19970812; US 13042998 A 19980806