(19)

(11)

EP 0 268 635 A1

(12)

(43) Date of publication: 01.06.1988 Bulletin 1988/22 (21) Application number: 87903452.0 (22) Date of filing: 03.06.1987

(51) International Patent Classification (IPC):  H01Q( . ) H01Q 19/ 18( . ) H01Q 19/ 13( . ) H01Q 19/ 19( . ) (86) International application number: PCT/NO1987/000044 (87) International publication number: WO 1987/007771 (17.12.1987 Gazette 1987/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 03.06.1986 NO 19860002192 17.11.1986 NO 19860004563 (71) Applicant: STIFTELSEN FOR INDUSTRIELL OG TEKNISK FORSKNING VED NTH, (SINTEF) N-7034 Trondheim-NTH (NO)	(72) Inventor: KILDAL, Per-Simon N-7078 Saupstad (NO) (74) Representative: Barnieske, Hans Wolfgang  c/o H.W. Barnieske Patentbyra AB P.O. Box 25 Turingegatan 26 S-151 21 Södertälje 1 S-151 21 Södertälje 1 (SE)