Millimeter-Wave Antenna-in-Package (AiP) Design of a Wideband Patch Antenna for 5G applications

This paper presents a new antenna-in-package (AiP) design that enlarges a patch antenna bandwidth for 5G mobile communications. Unlike conventional AiP methods, the proposed one has an advantage in enlarging an impedance bandwidth without modifying antenna geometry. The approach uses a dielectric cube with a relatively high permittivity, around 15 to 20. By mounting the cube on a patch antenna, The antenna bandwidth where the return loss is greater than 10 dB is broadened from 0.5 to 1.4 GHz without changing the resonant frequency of the antenna. The antenna is designed at 28 GHz, and the antenna characteristics are thoroughly compared based on three antenna types.