EP 0870370 A1 19981014 - METHOD AND APPARATUS FOR PROVIDING ANTENNA DIVERSITY IN A PORTABLE RADIOTELEPHONE
Title (en)
METHOD AND APPARATUS FOR PROVIDING ANTENNA DIVERSITY IN A PORTABLE RADIOTELEPHONE
Title (de)
VERFAHREN UND GERÄT ZUR BEREITSTELLUNG VON ANTENNENDIVERSITY IN EINEM TRAGBAREN FUNKTELEFON
Title (fr)
PROCEDE ET APPAREIL POUR INSTALLER UNE DIVERSITE D'ANTENNES DANS UN RADIOTELEPHONE PORTABLE
Publication
Application
Priority
- US 9620656 W 19961223
- US 57989595 A 19951228
Abstract (en)
[origin: WO9724818A1] A diversity antenna system in a mobile unit which provides time, space and antenna pattern diversity to mitigate the effects of fading at a CDMA mobile unit. The system is comprised of a diversity antenna (105) and a main antenna (100). The main antenna (100) and diversity antenna (105) are physically separated and oriented such that they have different antenna gain patterns. In a first embodiment, the diversity antenna (105) functions as a receive antenna only, while the main antenna (100) performs both transmit and receive functions. In a second embodiment, both the main antenna (100) and the diversity antenna (105) transmit and receive signals. A delay circuit (130) couples the diversity antenna (105) to a summer (135) which sums the signals received by the main antenna (100) and the diversity antenna (105), respectively.
IPC 1-7
IPC 8 full level
H04B 7/06 (2006.01); H04B 7/08 (2006.01); H04B 7/26 (2006.01); H04J 13/00 (2011.01)
CPC (source: EP KR)
H04B 7/0671 (2013.01 - EP); H04B 7/08 (2013.01 - KR); H04B 7/0894 (2013.01 - EP)
Citation (search report)
See references of WO 9724818A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9724818 A1 19970710; AU 1469397 A 19970728; BR 9612319 A 19990713; CN 1208521 A 19990217; EP 0870370 A1 19981014; IL 125118 A0 19990126; JP 2000503184 A 20000314; KR 19990076867 A 19991025
DOCDB simple family (application)
US 9620656 W 19961223; AU 1469397 A 19961223; BR 9612319 A 19961223; CN 96199339 A 19961223; EP 96945286 A 19961223; IL 12511896 A 19961223; JP 52453597 A 19961223; KR 19980704994 A 19980627