EP 0045682 B1 19840919 - ANTENNA FEED FOR A TRANSMITTING-RECEIVING ANTENNA
Title (en)
ANTENNA FEED FOR A TRANSMITTING-RECEIVING ANTENNA
Publication
Application
Priority
FR 8016920 A 19800731
Abstract (en)
[origin: US4410866A] A transducer for coupling to an antenna with a first polarizing duplexer for working in a low-frequency band, a between-guide transition element formed from a variable-section guide and a second polarizing duplexer for working in a high-frequency band. In the polarizing openings of the first duplexer are placed dipoles resonating at the mean frequency of the high band which cause a short-circuit for the high frequencies and let the low frequencies pass. A set of quasioptical filters, situated in the body of the first duplexer, between the polarizing openings of this first duplexer and the transition element, causes a short-circuit for the low frequencies and lets the high frequencies pass.
IPC 1-7
IPC 8 full level
H01P 1/161 (2006.01); H01P 1/213 (2006.01); H01P 5/16 (2006.01); H01Q 19/18 (2006.01)
CPC (source: EP US)
H01P 1/161 (2013.01 - EP US); H01P 1/2131 (2013.01 - EP US)
Citation (examination)
"Tables of Elements Values for the Distributed Low Pass Prototype Filter", IEEE Transactions on Microwave Theory and Techniques, septembre 1965 - MTT 13, no. 5, pp. 514-517
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0045682 A1 19820210; EP 0045682 B1 19840919; AT E9521 T1 19841015; DE 3166182 D1 19841025; FR 2488055 A1 19820205; FR 2488055 B1 19840713; JP S5753103 A 19820330; JP S6355801 B2 19881104; US 4410866 A 19831018
DOCDB simple family (application)
EP 81401188 A 19810724; AT 81401188 T 19810724; DE 3166182 T 19810724; FR 8016920 A 19800731; JP 12059181 A 19810731; US 28794681 A 19810729