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(11)

EP 0 318 478 A1

(12)

(43) Date of publication: 07.06.1989 Bulletin 1989/23 (21) Application number: 87903794.0 (22) Date of filing: 27.05.1987

(51) International Patent Classification (IPC):  H01P 1/ 205( . ) H01P 7/ 04( . ) H01P 1/ 213( . ) H04B 1/ 40( . ) (86) International application number: PCT/US1987/001210 (87) International publication number: WO 1988/001104 (11.02.1988 Gazette 1988/04)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 25.07.1986 US 19860890682 25.07.1986 US 19860890686 (71) Applicant: MOTOROLA, INC. Schaumburg, IL 60196 (US)

(72) Inventors: MOUTRIE, Michael, F. Buffalo Grove, IL 60089 (US) SOKOLA, Raymond, L. Lake Zurich, IL 60047 (US) GORDON, Phillip, J. Carmel, IN 46032 (US) GREEN, Steven, R. Glendale Heights, IL 60139 (US) DEMURO, David, M. Schaumburg, IL 60193 (US) (74) Representative: Hudson, Peter David, et al  Motorola European Intellectual Property Midpoint Alencon Link Basingstoke, Hampshire RG21 7PL Basingstoke, Hampshire RG21 7PL (GB)