(19)

(11)

EP 0 754 354 A1

(12)

(43) Date of publication: 22.01.1997 Bulletin 1997/04 (21) Application number: 95913831.0 (22) Date of filing: 30.03.1995

(51) International Patent Classification (IPC):  H01P 1/ 208( . ) (86) International application number: PCT/CA1995/000177 (87) International publication number: WO 1995/027317 (12.10.1995 Gazette 1995/43)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 01.04.1994 US 19940221947 06.10.1994 US 19940318956 (71) Applicant: COM DEV LTD. Cambridge Ontario N1R 7H6 (CA)	(72) Inventors: CAMERON, Richard J., 11 Lucas Road Bucks HP13 6QG (GB) TANG, Wai-Cheung Mannheim, Ontario N0B 2H0 (CA) DOKAS, Van Cambridge, Ontario N1T 1K8 (CA) (74) Representative: Warren, Anthony Robert, et al  BARON & WARREN, 18 South End, Kensington London W8 5BU London W8 5BU (GB)