Simultaneous Specific Absorption Rate Ratio Summation and Peak Location Separation
Exceeding simple SAR summation thresholds requires peak location separation ratios below 0.04 to avoid multi-thousand-dollar volumetric chamber testing.
Spatial Peak Location
Meaning
Identifies the three-dimensional geometric point of maximum absorbed radiofrequency power density within a simulated tissue medium. Determination of the spatial peak location occurs during volumetric probe scanning inside liquid-filled phantoms. Locating this coordinate point is essential for centering high-resolution volume scans during exposure testing.
Mathematical interpolation identifies exact peak coordinates between physical measurement points.
Coordinate Mapping
Coarse area scans map electric field distributions across two-dimensional planes parallel to phantom surfaces. Software algorithms detect maximum local field strengths and assign spatial coordinates relative to the phantom origin. The identified spatial peak location serves as the geometric center for subsequent high-density three-dimensional volume scans.
Multi Antenna Interaction
Wireless devices containing multiple radiating elements generate complex SAR distributions with multiple localized peaks. Coarse scanning must identify every distinct spatial peak location to ensure complete volume evaluation. Failure to evaluate secondary peak regions leads to underestimated total exposure levels during simultaneous transmission analysis.
Advanced SAR systems evaluate power ratio relationships across multiple spatial peak locations to verify compliance.
Verification Record
Technical reports record exact grid coordinates for peak exposure points across all evaluated frequency bands. Spatial coordinates verify consistent antenna radiation patterns across production samples. The recorded spatial peak location provides baseline data for future permissive change evaluations.