Design and measurement of a novel metal‐only wideband magneto‐electric dipole antenna using asymmetrical structure

Abstract

A novel metal-only wideband magneto-electric dipole antenna is designed and measured in this letter. The antenna consists of two rectangular patches etched with asymmetrical slots as electric dipole, two folded patches as magneto-dipole, trident-shaped feeding structure and side-slotted ground, large metallic ground. The electric dipole is horizontally placed on both sides of the feeding structure, and two folded patches are assembled vertically on the small ground. Two symmetrically sided slots are etched on the small ground to reduce the profile and a trident-shaped feeding strip is employed to widen the bandwidth, while a lower ground with a large size is designed to suppress the radiation in the backward direction. Finally, the antenna prototype is fabricated and measured. The measured results show that −10 dB impedance bandwidth is achieved up to 75.9% at 2.7 GHz from 2.0 to 4.1 GHz. At 2.7 GHz, the measured peak gain is 9.0 dBi.