CERAMIC DIELECTRIC DUAL BAND HELICAL ANTENNA FIXED TO PORTABLE COMMUNICATION TERMINAL

摘要

PURPOSE: A ceramic dielectric dual band helical antenna fixed to a portable communication terminal is provided to improve a characteristic of the helical antenna, lower a price by increasing of the productivity, and increase a reliability. CONSTITUTION: A ceramic dielectric dual band helical antenna fixed to a portable communication terminal includes a helical type(12, 34), a whip(13, 43), and a plate spring. A helical groove is formed on the surface of a ceramic dielectric material which is fixed and processed as a cylindrical type having a predetermined diameter. The helical is formed as electroplating the groove using a metal such as copper. The helical type is penetrated by the whip. The whip is long formed with a straight line. Accordingly, the whip is able to move in the direction of the length. The plate spring is a means to support the whip when the whip is drown out and inserted.