Proximal-Field Radiation Sensors for Millimeter-Wave Integrated Radiators

A. Safaripour, B. Asghari, and A. Hajimiri

Integration of Proximal-Field Radiation Sensors (PFRS) with mm-wave integrated radiators enables extraction of valuable information about their far-field radiation properties from the surface waves inside the substrate and the electromagnetic fields in close proximity of the radiating antennas. In this paper, we present a 72 GHz 2×1 integrated radiator array with four on-chip PFRS units to show proximal-field sensing capability in calculation of far-field radiation properties solely through on-chip measurement of proximal fields.