Microwave Vision Group introduced SARLite, a new piece of measurement equipment that evaluates the Specific Absorption Rate (SAR) of wireless devices in a few seconds. SAR is the quantity characterizing the absorption of electromagnetic wave energy from any type of radiating device such as a mobile phone, laptop, or a tablet PC into the human head or body. SAR measurements are traditionally performed by using an electric field probe encased in a phantom (artificial head) filled with a liquid.

The dielectric properties of the liquid are representative of head or body tissues. The probe is moved inside the phantom by a robot, making it possible to obtain discrete E-field values. SARLite simplifies and accelerates the traditional SAR measurement method.

With 265 probes and 651 sensors in a 3D matrix design, an area greater than 20 x 20 cm can be measured in only a few seconds. SARLite is capable of measuring a frequency bandwidth from 800 MHz to 3 GHz, without manipulation of the liquid, in this case, a wideband tissue simulant gel sealed inside the device. The sealed device also means no evaporation and no need to refill or replace the gel.

SARLite measures the E-field values emitted from mobile devices in order to tune electromagnetic radiation and is applicable at various stages in the R&D process. SARLite can be used alone or as a complement to traditional SAR measurement systems to pre-test equipment in development, better preparing it for certification.