Patent ID: 6621464
Filing Date: 2003-09-16
Classification: H01Q

Abstract:
A dual-band dipole antenna, adapted to be disposed on a dielectric substrate, comprising:two substantially rectangular radiating metallic sheets, symmetrically disposed on two sides of the dielectric substrate with respect to the central line thereof, thereby forming two arms of the dual-band dipole antenna, wherein each of the substantially rectangular radiating metallic sheets further has a feeding point disposed opposite to the other feeding point for transmitting signals; and a slit extending from one edge of the substantially rectangular radiating metallic sheet in the direction of the feeding point to the interior thereof so that a longer path and a shorter one are formed on the substantially rectangular radiating metallic sheet, wherein the longer path serves to generate a first (lower frequency) operating mode of the dual-band dipole antenna, and the shorter path serves to generate a second (higher frequency) operating mode thereof; and a coaxial transmission line having a core conductor and an external ground conductor which are respectively connected to the feeding points.