EP 0235026 B1 19920108 - ROTATABLE CURTAIN ANTENNA
Title (en)
ROTATABLE CURTAIN ANTENNA
Publication
Application
Priority
FR 8602184 A 19860218
Abstract (en)
[origin: US4780725A] So as to allow modification of the radiation diagram of a rotary curtain antenna, the doublets of a curtain are distributed in groups of one or several doublets and each group has its own feed line which connects it to a switching box situated in the mast of the antenna and which is constructed so as to bring to the box an impedance inversely proportional to the number of doublets fed by this line; this box allows all or part of the groups of doublets to be fed at will from a mast down line. Dynamic impedance matching cells disposed at the foot of the antenna provide a small standing wave ratio for connection with a transmitter.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Designated contracting state (EPC)
CH DE GB LI
DOCDB simple family (publication)
EP 0235026 A1 19870902; EP 0235026 B1 19920108; DE 3775790 D1 19920220; FR 2594602 A1 19870821; FR 2594602 B1 19880513; US 4780725 A 19881025
DOCDB simple family (application)
EP 87400327 A 19870213; DE 3775790 T 19870213; FR 8602184 A 19860218; US 1471587 A 19870213