Entering a New World with cDASY6 Module mmWave V2.0

Two new powerful software packages in cDASY6 allow accurate power density compliance testing on the SAM phantoms for the first time

It took one idea, two years of focused research, and three dedicated people to make the impossible possible: we are pleased to announce that as of today, all DASY users will be able to compute the total field in the half space above the measurement planes from only a few electric (E-) field amplitude measurements!

The corresponding new methods and algorithms developed by the IT'IS Computational Electromagnetic Group are now accessible as stand-alone software packages in Module mmWave V2.0 of our cDASY6 software. The two new Options consist of:

• the FTE (Forward Transform Evaluation) Option that enables power density (PD) assessment on the SAM Heads or any other virtual surface from a single measurement
• the MEO (Maximum Exposure Optimizer) Option that computes the maximum PD for complex devices with phased-array antennas from a very limited set of measurements

This is a giant leap forward in mmWave compliance testing as the combination of the two new options not only makes accurate PD compliance testing on the SAM possible, it also saves users weeks of test time!

FTE Option

The FTE Option requires as input the measurement values of the new scan type called 'Forward Transform Scan' (FT Scan) of Module mmWave V2.0. In contrast to the 5G Scan of Version 1.x, it measures an additional third plane at an optimized location to improve the quality of the equivalent sources used to reconstruct the field. This will further improve the precision of the PD evaluation in general. The enhanced precision is needed in particular for the novel forward projection method and algorithms of the FTE Option that project and compute the PD at any location in the half space above the measurement plane, for instance on the mmWave SAM head surface or any other virtual surface. The FTE Option cuts down compliance costs for mmWave devices operating near the head as PD can be evaluated for all four test positions on the same head (Left / Right, Cheek / Tilt), and for various test distances at the ELI phantom, from one single planar measurement at 2 mm from the device.

Interested in learning more about this cDASY6’s FTE Option? Watch this video and see our application note for more details.

MEO Option

MIMO antennas are designed to orient the transmission (beam) to specific directions in order to achieve better link budgets. Most MIMOs can be configured by using the codebook and each code results in a different exposure. The number of codes in the codebook can be very large and, therefore, measurements of all configurations have been shown to be extremely time consuming and costly. The IT'IS team have further enhanced their optimization methods and made them available in the MEO Option. This Option computes the maximum PD on any surface using a semi-analytical solver and five iterative optimization methods that run in parallel and ensure robust identification of worst-case configurations without overestimation.

The MEO Option smoothly complements the FTE Option as the worst-case configuration can be determined on any virtual surface using forward transform projections. Applying both options in combination will save laboratories weeks of test time.

Interested in learning more about this mmWave MEO Option? Watch this video and see our application note for more details. Note that the MEO Option is currently only available as a preview. Any FTE Option user will be granted a free, time-limited license of the preview version. As always, SPEAG is grateful for your valuable feedback for further improvements!

Please note that an equivalent version of the MEO Option is also available in Sim4Life and SEMCAD X.

SPEAG is proud to be the only company globally that offers an advanced simulation package that is closely and smoothly integrated with the industry’s leading measurement tool and that empowers effective optimization of devices operated close to the body and meets all regulatory requirements.

Generic 3D Scan

cDASY6 Module mmWave V2.0 also includes the new Generic 3D Scan that is highly suited for R&D purposes as it enables E-field measurements on various measurement grid shapes (point, row, column, plane, and volume). It also provides a PD estimation based on far-field approximation.

Power density distribution measured with a Generic 3D scan for a device operating at 30 GHz. Six planes were measured.

Any comments or questions? Please contact us at info@speag.swiss.