A Compact Dual-band Antenna at Ka-band Frequencies for Next Generation Cellular Applications

Abstract

This paper presents a new design of a compactsized dual -band antenna operating at 28 GHz and 38 GHz for 5G cellular applications. Based on the slot-coupled patch configuration, the antenna exhibited a good impedance matching with reasonable gain of 5.5/6.5 dBi at 28/38 GHz within the band of interest. The measured total radiation efficiency of the antenna was 88.9%/83.7% at 28/38 GHz.