Assessment of incident power density in different shapes of averaging area for radio-frequency exposure above 6 GHz

Abstract

Overview

This research investigates the effects of different averaging shapes on absorbed power density (APD) and incident power density (IPD) in relation to electromagnetic field exposure standards for frequencies above 6 GHz.

Objective

• Examine the guidelines by the International Commission on Non-Ionizing Radiation Protection and IEEE C95.1-2019 focusing on human protection from local electromagnetic field exposure.
• Explore the internal and external physical quantities set as the exposure limit.

Approach

The study uses a computational method to evaluate the relationship between APD, IPD, and heating factors in models exposed to dipole sources and Gaussian beams, considering different averaging area shapes.

Main Results

• Identifies maximum differences in heating factors between square and circular averaging areas, highlighting a significant variance (-7.8%) under certain conditions.
• Assesses the conservative nature of circular averaging areas for frequencies up to 300 GHz.

Significance

The findings contribute valuable insights towards aligning exposure and product standards in electromagnetic field safety, demonstrating how averaging area shapes can impact assessment results and ensure conservative estimates, enhancing safety protocols.