Empirical Evaluation of a 28 GHz Antenna Array on a 5G Mobile Phone Using a Body Phantom

Implementation of an antenna array on a 5G mobile phone chassis is crucial in ensuring the radio link quality, especially at millimeter-waves. However, we generally lack ability to design antennas under practical operational conditions involving body effects user repeatable manner. We developed numerical and physical phantoms human for evaluation handset 28 GHz. While model retains realistic accurate shape, our phantom has much simpler hexagonal cross section represent body. Gains phased configuration chassis, called colocated numerically experimentally evaluated. The formed by placing two sets 4-element dual-polarized patch arrays, modules, locations chassis. Modules are intended collect maximum amount energy single transceiver chain. Spherical coverage realized gain shows that experimental statistics gains across entire solid angles agree with simulations. thereby demonstrate method reproduces reality serves tests prototypes