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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

05/05/2011

Contact
semx-support@speag.swiss

 

SEMCAD X V14.6.0 Aletsch

The SEMCAD X Team is pleased to announce the release of SEMCAD X V14.6.0 Aletsch, a major upgrade offering a range of powerful new Modules and features, more robust handling as well as new customization options.

 
MEASUREMENT

22/04/2011

Contact
info@speag.swiss

 

Improved Broad-Band Liquids

SPEAG completed its development of greatly improved head and body tissue simulating liquids for the frequencies from 3500 to 5800 MHz. This new broad-band liquids are within ±5% to the target values and provide significantly improved long-time stability and reduction of the maintenance efforts. Therefore, they lower costs and improve reproducibility of the test results.

 
MEASUREMENT

14/04/2011

Contact
info@speag.swiss

 

iSAR Quad pre-release

iSAR Quad is the largest and highest-resolution iSAR available. iSAR Quad is capable of scanning a 600 mm x 400 mm planar area with a 1 mm resolution, making it well suited for scanning laptops, tablet computers and other large devices. 

 
SIMULATION

31/03/2011

Contact
semx-support@speag.swiss

 

SEMCAD X Light v14.4.4 Release

The SEMCAD X Team is pleased to announce the release of SEMCAD X Light V14.4.4, a limited version of SEMCAD X v14.4.3 Aletsch.

 
SIMULATION

28/03/2011

Contact
semx-support@speag.swiss

 

SEMCAD X Workshop Series 2011 in China/Taiwan

The SEMCAD X Team is pleased to announce the dates for the SEMCAD X Workshop Series in China and Taiwan for 2011

 
MEASUREMENT

15/03/2011

Contact
info@speag.swiss

 

Golden Validation Device

The Golden Validation Device is a very stable, reliable and easy-to-use calibrated reference source for SAR and OTA measurements. It is a stand-alone device that can be used anywhere without connection to a network. The antenna is well-matched under different loading conditions to provide a reliable output.

 
SIMULATION

10/02/2011

Contact
semx-support@speag.swiss

 

SEMCAD X v14.4.3 Release

The SEMCAD X Team is pleased to announce the release of SEMCAD X v14.4.3, an update of SEMCAD X Aletsch v14.4.

 
SIMULATION

25/01/2011

Contact
semx-support@speag.swiss

 

Three Papers Selected as Highlights of 2010 by the Journal Physics in Medicine and Biology Relied on SPEAG's Advanced Products SEMCAD X & DASY52 NEO

Three papers relying on SPEAG's products in the execution of their studies were among the 30 articles selected by the journal Physics in Medicine and Biology as the Highlights of 2010

 
MEASUREMENT

17/01/2011

Contact
info@speag.swiss

 

iSAR² V2.3 Software Release

Fast SAR measurements are now faster than ever (less than one second).  Also, combined SAR evaluation of simultaneous transmitters and new flexibility for comparison of iSAR² measurements with DASY or other iSAR² measurements have been introduced. This further cuts the time spent on quality assurance, prototype evaluation and pre-compliance testing of wireless devices.

 
SIMULATION

02/01/2011

Contact
semx-support@speag.swiss

 

Exhibitions and Workshops 2011

SPEAG will be exhibiting at the following conferences and exhibitions this year. If you would like to arrange a demo or meeting, or are interested in attending a technical workshop, please send an email to semx-support@speag.swiss.

 
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