Disruptive metrological innovation - from R&D to Production Line testings !


Advanced Near-Field scanner technology : SAR* application

D-PHASE® is the only measurement technology allowing to measure accurately and in real time all types of electromagnetic signals of current and future telecommunications and IoTs.
This technology is the basis of the most powerful SAR measurement instruments (RF-VMBS). ART-MAN and ART-LiNE are the only products implementing this technology to date.
This technology is at the origin of the creation of a new international standard of measurement published and ratifies the new state of the art of the measurement instrumentation in near field of electromagnetic waves.
This technology and this new standard are indispensable to overcome the limitations of the old approaches which are unable to measure in real-time and accurately the modern signals of multiple emissions as implemented in 5G and in many other current and future emission modes.
* Specific Absorption Rate, Human RF exposure


D-PHASE is based on the measurement of all the fundamental physical quantities of electromagnetic waves (Amplitude, Phase, Frequency/Time/Space). This approach avoids any form of measurement inaccuracy such as interpolations/extrapolations and artificial test modes not representative of the real emission modes of wireless devices, as it is currently the case with outdated technologies and standards.

Exclusive Phase direct measurement


Superheterodyne RF Receiver


Fundamental electromagnetic wave characteristics


Physics laws (Maxwell & Huygens)

D-PHASE® is a disruptive measurement technology inspired by the multispectral retinal imaging

Patented innovation

D-PHASE® technology is multi-patented, from hardware to algorithms

Exclusive phase measurement

The direct measurement of the phase of the electromagnetic field vector is essential for high-precision measurements. It allows total-field retrieval using solely physics’ laws without any approximations. This disruptive near-field technology natively generates real-time, full radiofrequency, and precise measurement of antenna radiations. The D-PHASE® technology is future-proof for addressing today's and tomorrow's key measurement challenges due to rapid and strong innovations in the wireless industry.
The simple principle is to avoid any mechanical movement of the probes: a fixed array made of several hundreds of RF Vector probes immersed in a wide band fluid and integrated into sealed phantoms. An electronically real-time scan of the probes combined with a vector spectrum analyzer for direct phase acquisition of radiofrequency signals (time-domain).

D-PHASE® for 5G and multiple emissions

For 5G mobile phones and multiple emissions, the recent publication of the IEC 62209-3 standard recognizes the D-PHASE® technology. This illustrates the industry needs for having sophisticated measurement technologies for SAR testing.


English video (motion design)

French video (motion design)

History of the SAR testing

A telecommunication wireless device emits radiations of electromagnetic fields (EMF) of an energy that is absorbed by the human tissues. This human exposure leads to human body temperature elevation.
The international scientific community of research on bio-electromagnetics has proven that the electromagnetic properties of the human tissues are with a linear dependence of absorbed power and device transmitted-power, whatever is the radiofrequency signal time-waveform, spectrum-occupation, and its radiation spatial-division.
Publications have showed that the 30 years old historical technology is limited to deliver the required linear measurement of the EMF power and its associated SAR. It is even more true that today's mobile phones embed advanced modulations and complex radiation modes combining all of time, frequency and space duplexing.

Historical technology is reaching its limits for the 5G challenges: the SAR measurement underestimation resulting from the aforementioned non-linearities - with the RF signal waveform complexity and modulation scheme - is becoming severely significant. As a consequence, it puts the public health at risk. 

D-PHASE® enables testing of multiple emissions in the real intended use of the smartphones and IoT devices and makes the testing time from 40 minutes to real-time.

D-PHASE® opens the door to the measurement directly in production line on top of R&D and certification testings

Innovative accurate SAR testing solutions using RF vector probe technology (D-PHASE®) seamlessly addresses the above-mentioned limitations enabling accurate SAR measurements of the new 5G and future radio-connected devices.
Those measurements are made possible due to the vector spectrum analysis (VSA) of the time-domain modulated RF signals. For the same network frequency, it allows  to agnostically measure the SAR induced from various modulation technologies and spectra bandwidths, carrier frequencies and dynamic power allocations 


High precision solution for Specific Absorption Rate (SAR) testing & measurement. SAR measurement solutions. Manufactured in France. Precise SAR testing services.  SAR Testing for IEC and FCC | SAR Compliance Testing. ART-Fi provides solutions to accelerate wireless regulatory compliance across development, pre-compliance testing, and certification using innovative electromagnetic field measurement technologies. ART-Fi also offers professional services for antenna design, development, and 3D-EM simulation. All ART-MAN systems are manufactured in France. Solutions de mesures de haute précision du débit d'absorption spécifique (DAS).  

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   Contact ART-Fi
   2 rue Jacques Monod
   91400 ORSAY, FRANCE

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