Design of Efficient and Wideband 60 GHz Series-Fed Millimeter-Wave Antenna Array for Next-Generation Multi-Gigabit Industrial Applications

A compact, highly efficient, and wideband 8-element series-fed array with parasitic patches is designed at 60 GHz millimeter-wave ISM band. The proposed array covers the license-free band from 57–66 GHz with −10 dB impedance bandwidth of 25.94% (53-68.8 GHz) and peak realized gain of 14.60 dBi at 65 GHz. The gain fluctuation is less than 0.75 dB in the entire band of interest, and the radiation efficiency is above 91.8% The array prototype was fabricated and tested. The measured reflection coefficient closely matches with the simulated one. The proposed antenna array is suitable for unlicensed 60 GHz mmWave industrial applications to support multi-gigahertz bandwidth and multi-gigabits-per-second data rate. It can operate with various 60 GHz protocols such as IEEE 802.11ay, IEEE 802.11ad, IEE 802.15.3c, Wireless HD and ECMA-387.