A Broadband Magneto-Electric Dipole Antenna with a Novel Feeding Mechanism

A novel feeding mechanism has been proposed to feed the magneto-electric dipole for achieving a broad bandwidth. The antenna consists of an electric dipole, a pair of patches vertically shorted to the ground plane, a
$\Gamma$
-shaped feeding strip and a ground plane. A rectangular patch is removed from the edge of each arm for the electric dipole and the shorted patches are horizontally folded. The feeding structure is regarded as a CPW by locating the feeding point in a straight line with the edge of the shorted patch. Compared with traditional magneto-electric dipoles, a broader bandwidth has been obtained due to the feeding mechanism. The obtained frequency band (
$\text{VSWR} \leq 2$
) is from 1.04 to 3.1GHz. Moreover, the antenna has characteristics of stable radiation patterns and low cross-polarization level.