Evaluation of Specific Absorption Rate in the Far-Field, Near-to-Far Field and Near-Field Regions for Integrative Radiofrequency Exposure Assessment
Abstract
Overview
The study focuses on the assessment of Specific Absorption Rate (SAR) that human tissues encounter from wireless radiofrequency (RF) systems, including different parameters affecting SAR under the influence of modern RF technologies.
Findings
- Analytical methods derived from a substantial numerical analysis are introduced to swiftly evaluate SAR from RF systems operating simultaneously across varying frequencies (50 MHz to 5.5 GHz).
- The study highlights how SAR is influenced by user-specific attributes, the properties of RF systems, and examines the impact across the whole body, organs, and various brain regions.
Conclusion
Improved formulas for quantifying RF-EMF exposure are proposed, considering system location, subject posture, age, sex, and morphology via numerical simulations using advanced human anatomical phantoms. These methods could support epidemiologic evaluations by providing estimates of cumulative RF exposure and their potential implications on human health based on integrated SAR levels.