Precise Calibration of Plane-Wave Microwave Power Density Using Power Equation Techniques
Howard I. Bassen, William A. Herman · 1977
This 1977 study established precise microwave measurement standards still used today for EMF health research.
Plain English Summary
This 1977 technical study developed precise methods for measuring microwave power density in laboratory settings using specialized antennas and chambers. Researchers achieved measurement accuracy within 0.56 dB at 2450 MHz and 0.76 dB at 915 MHz frequencies. The work established calibration standards for equipment used to measure microwave exposure levels.
Why This Matters
While this appears to be purely technical research, it represents a crucial foundation for EMF health research. The science demonstrates that accurate measurement of microwave exposure is fundamental to understanding biological effects. The frequencies tested here - 915 MHz and 2450 MHz - are particularly relevant today, as 915 MHz sits within cellular frequency bands and 2450 MHz is the exact frequency used by microwave ovens and WiFi routers. What this means for you is that the measurement techniques developed in this study likely underpin the calibration standards used in modern EMF exposure research. The reality is that without precise measurement methods like these, we cannot accurately assess the health risks from the wireless devices we use daily.
Finding
Absolute power density uncertainties are estimated at 0.56 dB, at - 2450 MHz, and 0.76 dB, at 915 MHz, under worst case conditions.
In their words
“Absolute power density uncertainties are estimated at 0.56 dB, at - 2450 MHz, and 0.76 dB, at 915 MHz, under worst case conditions.”
Figures from the Original Paper
Diagrams extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{precise_calibration_of_plane_wave_microwave_power_density_using_power_equation_t_g6107,
author = {Howard I. Bassen and William A. Herman},
title = {Precise Calibration of Plane-Wave Microwave Power Density Using Power Equation Techniques},
year = {1977},
}