One-sided directional slot array antenna for 28GHz wideband operation

This paper presents the design of one-sided directional slot array antenna for 28 GHz wideband operation. The slot antenna has a three-layer structure as following: top metal, floating metal, and bottom metal layer. The 2-element array antenna is combined with the 2 antenna elements. It is regarded as one sub-array, and a 16 array antenna is designed. Each antenna is connected by the coplanar waveguide (CPW) to feed the 28GHz-band signal. The proposed array antenna is fabricated and measured the reflection coefficient and antenna gain. The measured gain of the antenna is 12.7 dBi at 27.77 GHz.