mmWave Mobile Devices with Reconfigurable Broadside and Endfire Radiation using Shared Aperture Antenna-on-Display and Antenna-in-Package

This paper is the first to propose a collection of shared aperture concept using Antenna-on-Display (AoD) and Antenna-in-Package (AiP) to independently and collectively maximize high gain beam steering coverage for mmWave mobile devices. The proposed AoD and AiP are exemplified to demonstrate this approach to obtain miniaturized dimension while achieving enhanced beam coverage. The proposed AoD operates at 5G FR2 n261 (27.5-28.35 GHz) and n260 (37–40 GHz) while supporting dual polarization. The AoD further maximizes the boresight coverage in the direction normal to the display panel The devised AiP combines end-fire and broadside antennas as a shared aperture cavity slot antenna structure to minimize the antenna dimension at 28 GHz band. By integrating the proposed AoD and AiP within mobile devices, beamforming coverage can be enhanced by achieving hemisphere radiation pattern with minimum and maximum gain of7 dBi and 9.56 dBi respectively (based on four-element array), and 50 % CDF of more than 4.2 dB compared to that of an independent AoD configuration.