
Phased Array Radiation Field Mapping under Proximity Loading
Proximity loading detunes phased arrays and distorts beam shapes, requiring near-field spatial power density mapping to maintain regulatory exposure limits.

Proximity loading detunes phased arrays and distorts beam shapes, requiring near-field spatial power density mapping to maintain regulatory exposure limits.

Minimum antenna separation depends on transmitter power, receiver blocking thresholds, intermodulation mixing products, and regulatory simultaneous exposure ratios.

Resolve multi-band simultaneous SAR by calculating exposure ratios and SPLSR to avoid volumetric testing or implement firmware power back-off controls.

Co-located radio Class II Permissive Changes demand radiated intermodulation scans and exposure summation when transmitter antennas sit within 20 cm.

Exceeding simple SAR summation thresholds requires peak location separation ratios below 0.04 to avoid multi-thousand-dollar volumetric chamber testing.

Coordinating multi-radio permissive changes requires early intermodulation scanning, proactive grant transfers, and simultaneous SAR sum calculations before filing.
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