EP 0288988 B1 19930303 - ADAPTIVE ANTENNA SYSTEM FOR HIGH FREQUENCIES, ESPECIALLY FOR ULTRA-HIGH FREQUENCIES
Title (en)
ADAPTIVE ANTENNA SYSTEM FOR HIGH FREQUENCIES, ESPECIALLY FOR ULTRA-HIGH FREQUENCIES
Publication
Application
Priority
FR 8705907 A 19870427
Abstract (en)
[origin: US4864310A] The antenna includes at least one group of antenna elements (EA1, EA2, . . . , EAp). Microwaves emitted by a central emitter (EH) reach a particular element (EA1 for example) by passing through a controllable phase shifter (VE1), a laser (LE1) which modulates a carrier light signal at a frequency specific to said antenna element with the microwaves, via an optical deflector (FIE) which injects said light signal into an optical waveguide (GE) which is common to all of the antenna elements in the group, via an optical deflector (FPE) which directs said light signal to a detector which is specific to said antenna element (EA1), and which reconstitutes the microwaves, and via a microwave amplifier (AE1) which applies the microwaves to said antenna element. The system is applicable to telecommunications and to radar.
IPC 1-7
IPC 8 full level
H01Q 3/26 (2006.01); H04J 14/00 (2006.01); H04J 14/02 (2006.01); H04J 99/00 (2009.01)
CPC (source: EP US)
H01Q 3/2676 (2013.01 - EP US); H04J 14/00 (2013.01 - US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0288988 A1 19881102; EP 0288988 B1 19930303; AT E86412 T1 19930315; CA 1283972 C 19910507; DE 3878720 D1 19930408; DE 3878720 T2 19930609; ES 2039495 T3 19931001; FR 2614471 A1 19881028; FR 2614471 B1 19891020; US 4864310 A 19890905
DOCDB simple family (application)
EP 88106723 A 19880427; AT 88106723 T 19880427; CA 565059 A 19880426; DE 3878720 T 19880427; ES 88106723 T 19880427; FR 8705907 A 19870427; US 18685788 A 19880427