Compliance Assessment of the Epithelial or Absorbed Power Density Below 10 GHz Using SAR Measurement Systems

Abstract

Overview

The introduction of new dosimetric quantities, particularly epithelial or absorbed power density for frequencies above 6 GHz, demands the development of new experimental assessment procedures for compliance testing in line with updated exposure guidelines and safety standards.

Methodology

This study introduces a method to estimate the peak spatial-average absorbed power density (psSab) using the same data and algorithms employed for the peak spatial-average specific absorption rate (psSAR), which is traditionally limited to frequencies up to 10 GHz.

Findings

• The transformation of psSAR to psSab has an evaluated uncertainty component of less than 0.55 dB (13.5%), applicable for any source positioned as close as 0.02λ from the tissue simulating media.
• The method is straightforward to implement and supports compliance with the basic restrictions of the latest safety guidelines.

Conclusion

The developed approach facilitates the compliance assessment with safety standards and will be further extended to handle frequencies above 10 GHz in subsequent studies.