Abstract: A method of installing an antenna array module on a window includes adhering the antenna array module to the window and connecting the antenna array module to an external module via a cable. The cable may extend from one side of the window to the other. The antenna array module may include a substrate (e.g., a transparent substrate) and a plurality of antenna elements (e.g., meshed patches) on one or more layers of the substrate. Beamformer(s) and splitter/combiner(s) operably connected to the plurality of antenna elements may be embodied in the external module or in the antenna array module (e.g., in whole or in part in one or more integrated circuits on a surface of the substrate). The external module may output digital data derived from mm-wave, intermediate frequency (IF) and/or baseband signal(s) received from the antenna array module.