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(11)

EP 4 248 560 A1

(12)

(43) Date of publication: 27.09.2023 Bulletin 2023/39 (21) Application number: 21702622.8 (22) Date of filing: 28.01.2021

(51) International Patent Classification (IPC):  H03F 3/24(2006.01) H03F 1/42(2006.01) H03F 1/18(2006.01) H03F 3/60(2006.01) (52) Cooperative Patent Classification (CPC): H03F 3/607; H03F 3/245; H03F 2200/451; H03F 1/18; H03F 1/42 (86) International application number: PCT/EP2021/051932 (87) International publication number: WO 2022/161609 (04.08.2022 Gazette 2022/31)

(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 (71) Applicant: Huawei Technologies Co., Ltd. Shenzhen, Guangdong 518129 (CN)	(72) Inventor: PIAZZON, Luca 80992 Munich (DE) (74) Representative: Isarpatent  Patent- und Rechtsanwälte Barth Charles Hassa Peckmann & Partner mbB Friedrichstrasse 31 80801 München 80801 München (DE)