EP 2050188 A1 20090422 - MULTI-CHANNEL ACQUISITION DEVICE FOR RADIO TRANSMITTERS
Title (en)
MULTI-CHANNEL ACQUISITION DEVICE FOR RADIO TRANSMITTERS
Title (de)
MEHRKANALERFASSUNGSVORRICHTUNG FÜR FUNKSENDER
Title (fr)
DISPOSITIF D'ACQUISITION MULTI-VOIES POUR TRANSMETTEURS RADIO
Publication
Application
Priority
- FR 2007001337 W 20070802
- FR 0607160 A 20060804
Abstract (en)
[origin: WO2008023103A1] The present invention relates to a fixed receiving system (A) for a radio relay channel system for transmitting, on a fixed network, information transmitted on a unique wavelength ? by a plurality of transmitters generally associated with measurement sensors, the transmitters being dispersed over a geographic area, to the receiving system (A) for the collection of all of the information transmitted in said geographic area. The system comprises at least two antenna (1) - receiver (2) pairs (I, II), each receiver (2) of said pair (I, II) only being associated with the single antenna (1) of the same pair (I, II), the output of each receiver (2) being connected to a single information acquisition controller (4), the antenna (1) of one pair (I, II) being placed at a distance of at least ?/4 of the antenna (1) of the other pair (I, II), in order to protect against the effects of null spots resulting from the mutual cancellation of waves originating from the same transmitter but having followed different propagation paths, and having undergone different and even opposite transformations in terms of amplitude and phase.
IPC 8 full level
H03B 7/08 (2006.01); G01D 4/00 (2006.01); G08C 17/02 (2006.01); H04Q 9/00 (2006.01)
CPC (source: EP KR)
G01D 21/00 (2013.01 - EP); H04B 1/06 (2013.01 - KR); H04B 7/0837 (2013.01 - EP); H04B 17/00 (2013.01 - KR); H04Q 9/00 (2013.01 - EP)
Citation (search report)
See references of WO 2008023103A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
FR 2904740 A1 20080208; FR 2904740 B1 20100521; AU 2007287463 A1 20080228; CA 2659760 A1 20080228; EP 2050188 A1 20090422; JP 2009545903 A 20091224; KR 20090035609 A 20090409; MX 2009001251 A 20090407; TN 2009000037 A1 20100819; WO 2008023103 A1 20080228
DOCDB simple family (application)
FR 0607160 A 20060804; AU 2007287463 A 20070802; CA 2659760 A 20070802; EP 07823390 A 20070802; FR 2007001337 W 20070802; JP 2009522306 A 20070802; KR 20097003986 A 20090226; MX 2009001251 A 20070802; TN 2009000037 A 20090203