ANTENNA WITH HELICAL STRUCTURE OF CERAMIC DIELECTRIC DUAL BAND FIXED IN TERMINAL OF PORTABLE PHONE

摘要

PURPOSE: Helical structure is modified to improve an antenna characteristic of a portable phone. CONSTITUTION: An antenna with helical structure of a ceramic dielectric dual-band, fixed in a terminal of a portable phone, which can be extended to a length direction, comprises: a helical for forming a spiral groove on the surface of a ceramic dielectric material, processed to a cylinder shape, and for plating the formed groove with metal; a whip for passing through a first helical and a second helical, and forming in a straight line and for moving to the length direction; a spring for supporting the whip while withdrawing of the whip and inserting of the whip.