A Low-Profile Substrate Integrated Magneto-Electric Dipole Antenna Based on Folded Magnetic Wall for UWB Application

In this paper, a novel low-profile substrate integrated magneto-electric (ME) dipole Antenna with structure-folded magnetic wall is proposed to reduce the thickness of a magneto-electric (ME) dipole. A hat-type structure loaded on Γ-shaped probe is designed for impedance matching. In order to integrate with the chip, ground coplanar waveguide (GCPW) to Γ-shaped probe transition is designed at the bottom layer of the antenna. By employing the folded magnetic wall, the height of the ME dipole antenna is reduced to 0.064λ0 (where λ0 is the wavelength of 4 GHz). Simulated and measured results show that the proposed antenna operates from 3.73 to 4.55 GHz. Symmetrical and high front-back-ratio radiation pattern is achieved with a stable gain of 5.9 dBi across its operation bandwidth.