SAR Assessment Using Vector Probe Array System in the Context of RF Exposure Reduction Utilising Proximity Sensors and Time-Averaging Technologies

This paper introduces a measurement system architecture for Specific Absorption Rate (SAR) assessment in the context of RF exposure reduction. Focus is brought on two RF exposure reduction technologies: Proximity Sensing and Time averaged SAR (TAS). The proposed architecture is mainly based on the use of a vector-phasor probe array, combined with time domain RF acquisition chain. Coupled with a robotized arm and automation algorithms, the overall setup allows the user to test a device in its intended use without resorting to altered measurement set-ups currently used in state-of-the art techniques. The proposed approach has been successfully validated with experimental measurements on actual smartphone.