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(11)

EP 1 647 070 A1

(12)

(43) Date of publication: 19.04.2006 Bulletin 2006/16 (21) Application number: 04743481.6 (22) Date of filing: 19.07.2004

(51) International Patent Classification (IPC):  H01Q 1/38(1968.09) H01L 21/32(1974.07) H01Q 15/02(1968.09) (86) International application number: PCT/GB2004/003146 (87) International publication number: WO 2005/013416 (10.02.2005 Gazette 2005/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 22.07.2003 GB 0317121 (71) Applicant: Plasma Antennas Limited Yarnton, Oxfordshire OX5 1PF (GB)	(72) Inventors: HAYES, David Winchester, Hampshire SO22 5LY (GB) KEETON, Richard, Brooke Beaulieu, Hampshire,SO42 7YH (GB) (74) Representative: Jones, Graham Henry  Graham Jones & Company 77 Beaconsfield Road Blackheath, London SE3 7LG Blackheath, London SE3 7LG (GB)