Antenna device for portable wireless terminal
First Claim
1. An antenna device for a portable wireless terminal comprising:
- an antenna housing including a helical antenna formed therein in a longitudinal direction of the antenna housing and having a perforating hole defined in the longitudinal direction of the helical antenna;
a whip antenna slidably retractable into and extendable from a terminal main body through the perforating hole;
a stopper formed on a bottom of the whip antenna to provide a connection point and restrict movement of the whip antenna when the whip antenna is fully extended; and
an antenna dummy extending from the stopper along an outer surface of the whip antenna in the longitudinal direction, said antenna dummy being positioned in the helical antenna so as to face the helical antenna when the whip antenna is fully extended.
1 Assignment
0 Petitions
Accused Products
Abstract
An antenna device for a portable wireless terminal that comprises an antenna housing including a built-in helical antenna and having a perforating hole defined in a longitudinal direction of the helical antenna; a whip antenna slidably retractable into and extendable from a terminal main body through the perforating hole; a stopper formed on a bottom of the whip antenna to provide a connection point and restrict movement of the whip antenna; and an antenna dummy extending from the stopper along the outer surface of the whip antenna in the longitudinal direction of the whip antenna. The antenna dummy is positioned in the helical antenna so as to face the helical antenna when the whip antenna is fully extended. The antenna dummy extends from the stopper of the whip antenna to increase the reactance of the stopper and to provide capacitive coupling between a helical antenna and the stopper to improve the antenna gain, which allows provision of a high quality antenna device even if the length of the antenna is restricted according to the miniaturization of the terminal.
-
Citations
5 Claims
-
1. An antenna device for a portable wireless terminal comprising:
-
an antenna housing including a helical antenna formed therein in a longitudinal direction of the antenna housing and having a perforating hole defined in the longitudinal direction of the helical antenna;
a whip antenna slidably retractable into and extendable from a terminal main body through the perforating hole;
a stopper formed on a bottom of the whip antenna to provide a connection point and restrict movement of the whip antenna when the whip antenna is fully extended; and
an antenna dummy extending from the stopper along an outer surface of the whip antenna in the longitudinal direction, said antenna dummy being positioned in the helical antenna so as to face the helical antenna when the whip antenna is fully extended. - View Dependent Claims (2, 3, 4, 5)
-
Specification