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EP 4 824 899 A1

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(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 25718835.9 (22) Date of filing: 21.03.2025

(51) International Patent Classification (IPC):  H01Q 1/28(2006.01) H01Q 21/28(2006.01) H01Q 19/08(2006.01) H01Q 21/20(2006.01) H01Q 21/29(2006.01) (52) Cooperative Patent Classification (CPC): H01Q 1/28; H01Q 21/29; H01Q 21/20; H01Q 19/08; H01Q 21/28 (86) International application number: PCT/US2025/020935 (87) International publication number: WO 2025/207439 (02.10.2025 Gazette 2025/40)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 25.03.2024 US 202463569553 P (71) Applicant: Northrop Grumman Systems Corporation Falls Church, VA 22042-4511 (US)

(72) Inventors: HOUSER, Peter, Bennett Poway, CA 92064 (US) BURNSIDE, Scott, Richard Amissville, VA 20106 (US) ALEMU, Tadiyos, Yonas Murrieta, CA 92562 (US) DALLARA, Joseph, Paul San Luis Obispo, CA 93401 (US) FLANAGAN, Rachel, Marie Escondido, CA 92026 (US) (74) Representative: Cross, James Peter Archibald et al Maucher Jenkins Seventh Floor Offices Artillery House 11-19 Artillery Row London SW1P 1RT London SW1P 1RT (GB)