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A High Gain Broadband Quasi-Yagi Dielectric Lens Antenna for 5G and Millimeter Wave Applications

A high gain wideband microstrip-fed Quasi-Yagi antenna is designed for 5G and millimeter-wave applications. The gain of the proposed Quasi-Yagi antenna is enhanced by a planer perforated dielectric lens resulting in (11-13) dBi realized gain over the frequency band from 28 to 38 GHz with a cross-polarization level better than -25 dB. Furthermore, the presented antenna has radiation and aperture efficiency better than 90% at 30 GHz. The proposed antenna is scaled for different millimeter frequencies and exhibits a competitive performance that makes it suitable for a wide range of mm-wave applications include imaging, high data-rate communication systems (5G backhaul) and automotive radars.