iSAR QUAD
Immediate SAR Scanner for large devices
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Description
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Download Product Flyer (PDF, 800 kB) In single scan operation, iSAR Quad performs a measurement typically in less than one second using a 15 mm scan resolution in the same way as iSAR Flat operation. In full scan operation, the 256-element sensor array is moved under the device, over a large scanning area. Movement is continuous and the SAR distribution is constructed with a fine resolution. The total scanning time is one to two minutes, depending on the scan area and measurement resolution. |
| Applications | Large device testing - The large surface area of the iSAR Quad makes it ideal for testing laptops, pads, WLAN routers and other devices. The full area can be measured in one scan. High frequency device testing - Due to the high resolution of the iSAR Quad, it is well suited for measuring high frequency devices or other devices having sharp SAR distributions. |
| Software Features | Full scan - Measure 562 x 386 mm area in 1 - 2 minutes. Single measurement - Fast scanning in under 1 second. Comparator - Visualize production or prototype variations. Timesweep - See device performance over time to detect device stability. Automated control - GPIB control of the CMU200 for easy device control. Flexible scripting - Control equipment and data analysis with IronPython. |
| Measurement Time | 1 - 2 min for full scan, resolution dependent < 1 sec for single scan |
| Frequency Range | 0.5 – 6 GHz |
| Active Measurement Area | 562 x 386 mm |
| Total Absorbing Material | 320 x 320 x 80 mm (uses iSAR Flat) |
| Dielectric Medium |
Broadband Head Simulating Medium Conformance with target dieletric parameters: < 10% across frequency range (graph) |
| Number of Active Sensors | 256 (uses iSAR Flat) |
| Measurement Resolution | < 2 mm |
| Total Size (L x W x H) | 1020 mm x 820 mm x 800 mm |
| Total Weight | 260 kg |
| Sensitivity | < 0.05 W/kg |
| Dynamic Range | CW: > 100 W/kg |
| Repeatability | < 0.1 dB |
| Shell thickness | 2.9 mm |
| Measurement Cycles | > 3 million measurements |
| Additional Accessories | Spacers for iSAR Flat / Quad Golden Validation Device |
| Conformity | ISO 12100 |
| Calibration | Calibration is performed to SPEAG's high-quality standards. iSAR calibration is included within the scope of our ISO/IEC 17025 accreditation. |
| Comparison with DASY5 |
A comparison of iSAR and DASY measurement results has been conducted for a limited set of mobile telephones. iSAR is not a substitute for DASY5. DASY5 is fully compatible with international SAR measurement standards and is used for full compliance evaluation of wireless devices. iSAR Quad has the following limitations compared to DASY5: 2D sensors (DASY5 has 3D sensors). iSAR measures the two electric field polarizations parallel to the phantom surface. The absence of the polarization in the depth direction may cause SAR underestimation if the source has strong electric fields perpendicular to the phantom surface and the source is located in close proximity to the iSAR surface. Using low-loss spacers between the device and the iSAR can reduce this effect. 2D area scan (DASY5 performs volumetric measurements). iSAR estimates the volumetric SAR distribution from measurements conformal to the iSAR surface, using advance algorithms. The uncertainty of this estimation is documented in a publication by Kanda et al. Transfer calibration. DASY5 probes are calibrated using a primary source (e.g., waveguide) with low calibration uncertainty, while iSAR probes are calibrated in situ with RF sources that are traceable to DASY measurements, resulting in higher calibration uncertainty. iSAR and DASY calibration uncertainties are reported on our calibration page. iSAR is ideal for applications where relative measurements are needed. Further information is available in a conference presentation. |
