A novel technology for fast and accurate specific absorption rate measurement

Electromagnetic Inversion for Noninvasive Specific Absorption Rate Characterization

“…Of course, we can combine field reconstruction techniques with probe array measurements in order to further reduce the measurement time [16]. In fact, a commercial probe-array SAR measurement system using forward propagation has already been developed and provides very fast measurements [17].…”

Efficient Experimental Assessment of The Specific Absorption Rate (SAR) Induced by MIMO Wireless Communication Devices; Application of Vector Near-Field Measurement System

“…Near-field vector techniques directly exploit the XXX-X-XXXX-XXXX-X/XX/$XX.00 ©20XX IEEE 978-1-5386-5795-9/18/$31.00 ©2018 IEEE harmonic property o f the electromagnetic field. A corollary of this property is that the knowledge o f amplitude and phase of E-field components (Ex and Ey) tangential to a surface is enough to deduce the three E-field components (x,y,z) in all three dimensions [6][7].…”

“…Assessing vector fields requires determining the phase relative to a reference. Relative phase o f the electric field vector on the probe array grid is referenced to the phase o f the electric field of a preselected probe element among the probe array [6]. The experimental MIMO demonstrator set-up is composed by two dipole antennas operated at 1.9 GHz.…”

Experimental study on the relationship between Specific Absorption Rate and RF conducted power for LTE wireless devices

“…SAR measurements were performed with the ART-MAN system [1], [2] in a temperature-controlled laboratory at 21+/-0.6°C. This equipment is made of three phantom/mannequin sections instrumented with hundreds of RF vector probes.…”

“…Three commercial smartphones (mentioned as handset 1, 2 and 3) were used to perform extensive testing in US bands 4 (1710 -1755 MHz uplink) and 17 (704 -716 MHz). Over 1500 SAR measurements were carried out using the ART-MAN system by ART-Fi SAS, based on RF vector probe-array technology [1], [2]. The instrumentation and measurement approach used are further detailed in Section II.…”