cSAR3D V4.0: A Breakthrough in Array System Technology
The new X10 Combiner gives cSAR3D Flat phantoms higher measurement resolution, driving the measurement uncertainty below 30% for any source and extending the frequency range to 10 GHz.
cSAR3D V4.0 marks a major advancement for vector measurement-based array measurement systems: the newly integrated "X10 Combiner", a novel algorithm developed by the IT'IS Foundation that reliably combines multiple randomly shifted individual measurements onto a high-resolution grid, eliminates the physical limitation of the sensor density of fixed arrays by virtually increasing the spatial sampling resolution. As a result, the frequency range of cSAR3D has been extended to 10 GHz and the uncertainty has been reduced to 30% for any source. The timing is perfect as the Federal Communications Commission (FCC) and other regulators have recently opened unlicensed spectrum above 6 GHz and the soon-to-be-published IEC/IEEE Standard 62209-1528 includes SAR measurement procedures up to 10 GHz.
X10 Combiner – novel spatial combining algorithm to give a higher measurement resolution
Extended frequency range up to 10 GHz
Estimation of absorbed power density (epithelial power density) for comparison with new limits in new ICNIRP guidelines and the IEEE C95.1 standard
Even faster measurement time
The user video nicely illustrates these new features and how easy they are to use.
Higher Measurement Resolution
The spatial combining algorithm, called the X10 Combiner, is easy to use and does not require any new equipment. The software guides the user to make multiple measurements with the device at random positions on the cSAR3D Flat. It then automatically determines the shift in the device position from the specific absorption rate (SAR) distribution and uses these shifts to reconstruct the 3D pattern using these high-density measurement points. Thus, the physical resolution can be overcome, allowing measurement of devices having very sharp SAR distributions.
Extended Frequency Range
SPEAG extended the frequency range of DASY6 last year to include the 6 – 10 GHz frequency range and has now done the same for the cSAR3D Flat. This meets the emerging needs of wireless device manufacturers to test Wi-Fi and 5G devices in this frequency range.
No change is needed to the cSAR3D hardware. The miniature sensors inside the phantom have good sensitivity and are electrically small at 10 GHz. The tissue-equivalent medium is already compatible with the requirements for dielectric parameters up to 10 GHz. The only requirement is that the cSAR3D Flat or Quad is re-calibrated to include the 6 – 10 GHz frequency range. Note that SPEAG is now accredited to ISO/IEC 17025 for calibration of cSAR3D Flat and Quad at all frequencies in the 650 MHz – 10 GHz range.
cSAR3D V4.0 leads to a significant accuracy improvement for very localized SAR distributions. The full IEC 62209-3 validation (264 test conditions) has been performed on the cSAR3D Flat using the X10 Combiner as well as single measurements. Additional validation tests have been performed in the 6 – 10 GHz frequency range using the X10 Combiner. The results show that all combined values are within +/-1 dB of the target values indicating that the measurement uncertainty when using the X10 Combiner is less than 30% for any source.
Absorbed power density
Another novelty is that cSAR3D V4.0 also assesses and displays the absorbed power density (also known as epithelial power density in IEEE C95.1) averaged over an area of either 1 cm2 or 4 cm2. These dosimetric limits have been defined by ICNIRP (2020) and IEEE C95.1 (2019) in the frequency range above 6 GHz. It is expected that these new basic restrictions will soon be adopted by regulators.
SPEAG has also improved the measurement speed. The assessment time is now 2.6 s including acquisition, evaluation of 3D field reconstruction, calculation of uncertainty, and graphical output of the results. This also improves throughput for quality assurance testing in factory environments. Wireless device manufacturers have implemented cSAR3D for factory sampling due to its speed and automation features.
cSAR3D V4.0, together with the manual, are available for download here.
Recent information has been issued by the French government that wireless devices must comply with SAR limits in the limbs and hands. DASY52 is fully compatible with all testing requirements and international measurement standards. SAR phantoms and tissue equivalent liquids are available from SPEAG.
SPEAG is pleased to introduce the next generation in fast, high-precision Compliance SAR (cSAR3D) Systems, a system concept that had been developed during the last months to meet the various requests/suggestions of our highly valued customers.
We are pleased to announce that the frequency range of DAK has been extended. A novel algorithm has been implemented that extends the dielectric measurement capability of the DAK-12 Probe to 10 MHz - 5 GHz.
The SEMCAD X Team is pleased to announce the release of SEMCAD X V14.8.0 Aletsch, a major upgrade offering a range of powerful new Modules and features, more robust handling as well as new customization options.
We are proud to announce a breakthrough in EM probe systems. The Time-Domain-Sensor (TDS) is the basis of our novel product line of high-performance active optical radio-frequency field sensor systems. The TDS concept allows the measurement of the full complex vectorial EM field distribution (amplitude and phase) in the time and frequency domains. First TDS probes for E- and H-field measurements in the 10MHz to 6GHz frequency range will become available in the next quarter.
Our first DAK shipments were made to customers in December. We are very pleased about the successful launch and strong customer interest in this new product line for high-precision dielectric measurements. Expansion of the frequency range and applications for the DAK product line will continue in 2012.
SPEAG and Dymstec are delighted to announce the opening of the joint SPEAG Calibration Laboratory Korea, Inc. The laboratory is now fully operational and completed its first iSAR calibrations this month. iSAR calibration is performed using the same high-quality equipment and procedures as the SPEAG iSAR calibration laboratory in Zurich, with the additional benefit of much faster iSAR calibration service for many Asian customers.