Substrate integrated magneto-electric dipole antenna for 5G Wi-Fi

In this communication, a new technique — tapered H-shaped ground, is proposed to reduce the thickness of a magneto-electric (ME) dipole antenna. By employing the proposed technique, the antenna height of the ME dipole antenna is reduced from 0.25 to 0.11 λ₀ (where λ₀ is the wavelength of 5.5 GHz). This new antenna structure can be easily realized by the multi-layer printed circuit board (PCB) technology, which is low cost and easy to fabricate. Measured results show that this antenna has an impedance bandwidth of 18.74% for VSWR ≤ 2 (4.98 to 6.01 GHz). Stable radiation patterns with low back radiation and low cross polarization radiation are achieved across the entire operating bandwidth for 5G Wi-Fi.