(19)

(11)

EP 4 173 084 A1

(12)

(43) Date of publication: 03.05.2023 Bulletin 2023/18 (21) Application number: 21731828.6 (22) Date of filing: 02.06.2021

(51) International Patent Classification (IPC):  H01Q 23/00(2006.01) H04B 1/18(2006.01) H03G 1/00(2006.01) (52) Cooperative Patent Classification (CPC): H04B 1/18; H03G 3/3078 (86) International application number: PCT/FI2021/050404 (87) International publication number: WO 2021/260259 (30.12.2021 Gazette 2021/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 24.06.2020 FI 20205666 (71) Applicant: Elisa Oyj 00520 Helsinki (FI)	(72) Inventors: SUNILA, Karri 00520 Helsinki (FI) SALMENLINNA, Antti 00520 Helsinki (FI) (74) Representative: Espatent Oy  Kaivokatu 10 D 00100 Helsinki 00100 Helsinki (FI)