(19)

(11)

EP 3 921 892 A1

(12)

(43) Date of publication: 15.12.2021 Bulletin 2021/50 (21) Application number: 19703711.2 (22) Date of filing: 06.02.2019

(51) International Patent Classification (IPC):  H01Q 1/22(2006.01) H01Q 15/08(2006.01) H01Q 15/14(2006.01) H01Q 19/19(2006.01) H01Q 15/10(2006.01) (52) Cooperative Patent Classification (CPC): H01Q 1/225; H01Q 15/142; H01Q 15/10; H01Q 15/08; H01Q 19/19 (86) International application number: PCT/EP2019/052871 (87) International publication number: WO 2020/160763 (13.08.2020 Gazette 2020/33)

(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: Rosemount Tank Radar AB 435 23 Mölnlycke (SE)	(72) Inventors: EDVARDSSON, Olov 582 28 Linköping (SE) FREDRIKSSON, Håkan 589 51 Linköping (SE) (74) Representative: Kransell & Wennborg KB  P.O. Box 2096 403 12 Göteborg 403 12 Göteborg (SE)