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01/09/2020
MEASUREMENT

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.

The key new features of cSAR3D V4.0 are:

  • 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.

Faster Measurement

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.

SIMULATION

01/01/2010

Contact
semx-support@speag.swiss

 

Events & Exhibitions in 2010

Meet SPEAG engineers at the following forthcoming major conferences, symposia and workshops in 2010

 
SIMULATION

10/11/2009

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info@speag.swiss

 

Beacon Technical Sales, Inc. as New Distributor in U.S.A.

Schmid & Partner Engineering AG (SPEAG) is pleased to announce a new partnership with Beacon Technical Sales, Inc., who will be acting as a distributor of SEMCAD X in Nashua, U.S.A.

 
SIMULATION

23/10/2009

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info@speag.swiss

 

iSEG V3.1 Release

Zurich Med Tech, a sister company of SPEAG, has developed iSEG, a medical image segmentation tool specially designed to construct realistic 3D human or animal models for SEMCAD X from medical image data. iSEG, the most versatile medical image segmentation tool currently available, quickly and easily creates highly detailed 3D human or animal models based on CT and MRI images in standard image formats. The resulting models can be used to study electromagnetic exposure and induced heating in living tissue.

 
MEASUREMENT

16/10/2009

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info@speag.swiss

 

Final Release DASY52

The final release of DASY52 is a major upgrade representing the next leap in quality compliance testing of mobile phones and general near-field evaluations. The main new improvements are in the new GUI, Report Generator, Ultra-Fast SAR Procedures, and Advanced Probe Response Linearization.  Many more features that make the system compatible with the revised standards are expected to be released by the end of the year.

 
MEASUREMENT

12/10/2009

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info@speag.swiss

 

Successful CTIA Audits of SPEAG Head and Hand Phantoms

SPEAG OTA phantoms with accessories were successfully tested during first CTIA V3.0 audits at ETS Lindgren, Austin on October 1st and Qualcomm, San Diego on October 9th.

 
MEASUREMENT

25/09/2009

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info@speag.swiss

 

iSAR² Calibration is ISO/IEC 17025 Accredited

Schmid & Partner Engineering AG (SPEAG) is now accredited for iSAR calibration to the rigorous ISO/IEC 17025 quality standards. ISO/IEC 17025 is a laboratory quality standard that is widely recognized internationally. The addition of iSAR calibration to the SPEAG quality system provides a large portfolio of products for which SPEAG provides accredited calibration.

 
SIMULATION

17/08/2009

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info@speag.swiss

 

Dellsoft as New SEMCAD X Reseller in India

Schmid & Partner Engineering AG (SPEAG) is pleased to announce a new partnership with Dellsoft Technologies, who will now act as a reseller of SEMCAD X in India. Dellsoft is a leading technical software company in India. Dellsoft's vision is to  achieve international standards of excellence and to be the leading supplier of technical software, learning programs, and other teaching platforms. Many years of experience in the software business and a strong technical support team will facilitate their efforts in providing SEMCAD X to companies in India. 

 
SIMULATION

06/07/2009

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info@speag.swiss

 

SEMCAD X Student Research Award 2008 Winner Presentations

The SEMCAD X Student Research Award for 2008 prizes were presented to the winners during the June 2009 IEEE International Symposium on Antennas and Propagation (APS/URSI), in Charleston, SC, USA.

 
SIMULATION

01/07/2009

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semx-support@speag.swiss

 

SEMCAD X Student Research Award 2008 Winners

Schmid & Partner Engineering AG (SPEAG) is very pleased to announce the winners of SEMCAD X Student Research Award 2008.

 
SIMULATION

29/05/2009

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semx-support@speag.swiss

 

SEMCAD X in Nature Magazine

The results of a recent study using SEMCAD X have been published in the latest Nature magazine.

 
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