ANTENNA DEVICE OF PORTABLE WIRELESS TERMINAL

摘要

PURPOSE: An antenna device of a portable wireless terminal is provided to install a helical antenna vertical to the longitudinal direction of the portable wireless terminal by installing a feeding point at a center between both ends of the helical antenna. CONSTITUTION: An antenna device of a portable wireless terminal includes a helical antenna and a feeding point. The helical antenna(433) has a predetermined pitch and a predetermined radius. The helical antenna is installed vertically to the longitudinal direction of the portable wireless terminal. The feeding point(441) is formed at a predetermined point between both ends of the helical antenna. The predetermined point between both ends of the helical antenna corresponds to a center between both ends of the helical antenna.