A Novel Compact Magneto-Electric Dipole Antenna for Millimeter-Wave Beam Steering Applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)11772-11783
Journal / PublicationIEEE Transactions on Vehicular Technology
Issue number11
Online published21 Sep 2021
Publication statusPublished - Nov 2021


A novel compact magneto-electric (ME) dipole antenna with size of 0.31λ× 0.31λ× 0.12λ00 is the wavelength at central frequency herein and after), gain of around 8 dBi, and bandwidth of 39.7% is presented for millimeter-wave beam steering applications with the combination of the fractal technique and reactive impedance surface (RIS) loading. In particular, a fractal ME dipole antenna with four modified second-order Minikowski structures is firstly designed, where an aperture size of 0.38λ× 0.38λ0 is achieved. Herein, the antenna gain is dropped with the size reduction. Then a capacitive RIS structure is designed and loaded to improve the antenna gain and further lower down the antenna operating frequency range. With the RIS structure, the antenna gain is increased by around 4 dB, and the operating center frequency is shifted to left side by 9.0 GHz, thus achieving a further size reduction. Simulation and measurement results are provided to demonstrate the excellent properties of the proposed antenna. Subsequently, the antenna is arranged into a 5mm-spaced (half wavelength at 30GHz) 16-element uniform linear array. The beam steering characteristics of the array are investigated with the influence of phase quantization errors into consideration.

Research Area(s)

  • beam steering, Broadband antennas, Compact antenna, Dipole antennas, Fractals, Gain, high gain, Loaded antennas, Microstrip antennas, millimeter-wave, wide bandwidth, Wideband