(19)

(11)

EP 2 057 421 A1

(12)

(43) Date of publication: 13.05.2009 Bulletin 2009/20 (21) Application number: 06806743.8 (22) Date of filing: 01.09.2006

(51) International Patent Classification (IPC):  F24F 3/14(2006.01) H05K 5/02(2006.01) F24F 5/00(2006.01) (86) International application number: PCT/EP2006/065920 (87) International publication number: WO 2008/025377 (06.03.2008 Gazette 2008/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventors: JOHANSSON, Mikael 435 42 Mölnlycke (SE) NILSSON, Torbjörn 434 93 Vallda (SE) (74) Representative: Vejgaard, Christian  Ericsson AB Patent Unit Antennas and Microwaves Lindholmspiren 11 417 56 Göteborg 417 56 Göteborg (SE)