Patent ID: 6229488
Filing Date: 2001-05-08
Classification: H01Q

Abstract:
An antenna apparatus for receiving signals from a Global Positioning System (GPS) and a Global System for Mobile Communications (GSM) comprising:an elongated body formed of a dielectric material including an axial central through hole, a first conductor layer coated on the bore of the central through hole, an insulator fitted into the bore of the central through hole, and a feeding pin provided in the center of the insulator with both ends extended above one end and the other opposed end of the body;a ground conductor layer provided on one end of the body being in contact with the first conductor layer at the periphery of the central through hole, the ground conductor layer being axially extended upward a predetermined distance from the periphery of one end of the body with a recess formed therein;a patch antenna provided on the circumferential surface of the body being spaced from the ground conductor layer having a feeding end extended to the recess from the ground conductor layer and spaced apart from the ground conductor layer; anda helical antenna attached to the feeding pin at the other end of the body opposed to the ground conductor layer;wherein signals from the GSM and the GPS are received by the helical antenna and the patch antenna respectively, and the received signals are fed to a digital communication means for processing via the feeding end and electronics thereof and the feeding pin and electronics thereof respectively.