Method for manufacturing an antenna body for a phone and phone or handset having an internal antenna

摘要

An antenna body part (40) for use in an antenna device using a separate metal shield (24) as ground plane is manufactured by forming a first part of the dielectric body (40) by injection moulding where a first resin is injected into a first cavity in the injection moulding tool; forming a composite dielectric body (40) by injection moulding where a second resin injected into a second cavity in the injection moulding tool, said first part of the dielectric body is placed in the second cavity as a core for becoming an integrated part of the composite body; and coating a metallic layer (41) onto the surface of the composite dielectric body (40) where said first and second resins are selected to have different adhesive properties for the metal coating so one of the resins repels the metallic layer while the other allows the metallic layer to adhere. The antenna device is arrayed on a dual-band portable telephone set (1) as an internal antenna preferably adapted for communication via a cellular network (GSM 900MHz and GSM 1800MHz).