In this letter, a compact magneto‐electric (ME) dipole antenna is designed and analyzed without compromising too much good performance of the ME dipole. In particular, the second‐order Minkowski‐like fractal structure is loaded on the planar electric dipole to effectively miniaturize the aperture size of the antenna. A prototype was fabricated and measured. The antenna volume is reduced by 24.6% when compared with the counterpart before the fractal. Meanwhile, the proposed antenna can achieve a bandwidth of 56% in terms of −10 dB ranging from 1.58 to 2.81 GHz. The radiation pattern of E‐ and H‐planes are basically identical. The cross‐polarization level is less than −25 dB, and the front‐to‐back ratio is larger than 14 dB. The maximum antenna gain can be up to 10.1 dBi. The measured results are in good agreement with the simulated ones.
In this letter, a wideband magnetoelectric (ME) dipole antenna for 4G/5G communication is proposed. The bandwidth of the antenna is greatly enhanced by loading two pairs of metallic circular loops on the planar electric dipole. With the loops, the antenna impedance bandwidth in terms of 10 dB is improved from 48.3% (1.98–3.24 GHz) to 86.8% (1.465–3.71 GHz), that is, 79.7% bandwidth enhancement is achieved. The surface current of the proposed antenna is analyzed in detail. It shows that when the length of the loops approaches half a wavelength, the loops contribute new resonant modes, thereby increasing the impedance bandwidth. A prototype is fabricated and measured. The measured results are in good agreement with the simulated counterparts. Meanwhile, the antenna gain ranges from 7.42 to 12.8 dBi across the operational frequency region. Stable radiation patterns with low crosspolarization levels are obtained in both E‐ and H‐plane.
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