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EP 3 935 688 A1

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(43) Date of publication: 12.01.2022 Bulletin 2022/02 (21) Application number: 19709905.4 (22) Date of filing: 07.03.2019

(51) International Patent Classification (IPC):  H01Q 1/22(2006.01) H01Q 1/38(2006.01) (52) Cooperative Patent Classification (CPC): H01L 2924/19105; H01L 2224/48227; H01L 2223/6677; H01Q 1/2283; H01L 2224/16227; H01Q 1/38; H01L 2224/73265 (86) International application number: PCT/EP2019/055717 (87) International publication number: WO 2020/177867 (10.09.2020 Gazette 2020/37)

(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: NIRSCHL, Martin 80992 Munich (DE) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)