Compact Wideband Antenna-in-Package Based on PCB Technology for 39 GHz 5G mmWave Applications

In this paper, a compact wideband antenna-in-package (AiP) for 5G mmWave applications in the 39 GHz frequency band is presented. The proposed 1x2 antenna array consists of two identical patch antenna elements, which are designed, simulated and fabricated using a multilayer PCB substrate technology suitable for chip embedding. To improve the antenna bandwidth two U-shaped slots are etched in each patch element. The fabricated 1x2 U-slot patch antenna array exhibits a measured impedance bandwidth of 3 GHz at 39 GHz frequency band, and a measured peak gain of 8.8 dBi.