(19)

(11)

EP 1 025 621 A1

(12)

(43) Date of publication: 09.08.2000 Bulletin 2000/32 (21) Application number: 98909676.3 (22) Date of filing: 19.03.1998

(51) International Patent Classification (IPC)7: H01Q 15/00 (86) International application number: PCT/GB9800/829 (87) International publication number: WO 9849/750 (05.11.1998 Gazette 1998/44)

(84) Designated Contracting States: DE FR GB IT NL (30) Priority: 29.04.1997 GB 9708758 (71) Applicant: ERA PATENTS LIMITED LeatherheadSurrey KT22 7SA (GB)	(72) Inventors: WILLIAMS, Neil Surrey RH5 5TL (GB) PEARSON, Robert Hindhead,Surrey GU26 6TG (GB) (74) Representative: Rackham, Stephen Neil et al GILL JENNINGS & EVERY,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)