Definition and Validation of an Exposure Measurement Method for a Typical Load of a Base Station
Research
RF Safe Research Library
Jan 1, 2025
This exposure-assessment study proposes and validates a method to measure instantaneous RF exposure under typical base station load by generating defined data rates (low/medium/high) using iPerf and measuring channel power across services. Validation at four base stations suggests the approach is reliable across…
Assessment of Electromagnetic Field Exposure from Multiple Sources Simultaneously in the High- Frequency Range Based on Safety Standards
Research
RF Safe Research Library
Jan 1, 2025
This conference paper proposes a method to assess combined EMF exposure from multiple simultaneous high-frequency sources using a normalized exposure ratio based on ICNIRP 2020 guidelines. It emphasizes a current gap in standardized absorbed power density (Sab) measurement above 10 GHz and proposes incident power…
Exposure Variability Between 1- or 6-Minute and 30-Minute Averaging Time Lengths in Radiofrequency-Electromagnetic Field Exposure Monitoring
Research
RF Safe Research Library
Jan 1, 2025
This exposure assessment study compared RF-EMF measurements averaged over 1, 6, and 30 minutes using contiguous 1-minute data collected over 30 minutes at four indoor/outdoor sites across 15 frequency bands. Relative deviations between shorter averaging times and 30-minute averages were largely within ±3 dB. However,…
Comparison Between Broadband and Personal Exposimeter Measurements for EMF Exposure Map Development Using Evolutionary Programming
Research
RF Safe Research Library
Jan 1, 2025
This exposure-assessment study compares RF-EMF exposure maps produced using a broadband meter versus a personal exposimeter and aims to correct personal exposimeter readings to match broadband-based maps. The authors report that LOS/NLOS-specific correction factors reduce discrepancies, particularly improving LOS…
Deduction of Extrapolation Factors in Realistic Scenarios for In-Situ Assessment of 5G Base Stations
Research
RF Safe Research Library
Jan 1, 2025
This conference paper examines extrapolation factors used for in-situ EMF exposure assessment of 5G base stations in realistic indoor and outdoor scenarios. Using both frequency-selective and code-selective measurement approaches under varying traffic conditions, it reports substantial variability in extrapolated…
Comprehensive Measurement-Based Assessment of Downlink RF-EMF Exposure in Urban Environments: Multi-Method Analysis and Intercomparison.
Research
RF Safe Research Library
Jan 1, 2025
This study reports a measurement-based assessment of outdoor downlink RF-EMF exposure in a French city using drive testing, spot measurements, and a streetlamp-mounted sensor network. The authors report good agreement across methods and correlations between smoothed drive-test data, spot measurements, and base…
Measuring the Electromagnetic Field of the Human Brain at a Distance Using a Shielded Electromagnetic Field Channel.
Research
RF Safe Research Library
Jan 1, 2022
This study describes a non-contact, non-invasive method to measure electromagnetic activity attributed to the human brain using a lightweight helmet and a shielded EMF channel around a sensor. Volunteers performed metronome-synchronized tasks intended to elicit movement, thoughts of movement, and emotional thought.…
Novel Method of Electromagnetic Field Measurements of the Human Brain.
Research
RF Safe Research Library
Jan 1, 2022
This study describes a lightweight, inexpensive construct using non-contact EMF sensors to measure dynamic electromagnetic fields attributed to the human brain. Measurements in non-clinical volunteers reportedly differed from background recordings and changed during task performance and auditory stimulation. The…
Defining the Work Done on an Electromagnetic Field.
Research
RF Safe Research Library
Jan 1, 2018
This theoretical paper addresses how to define work done on an electromagnetic field by moving charges when the standard Hamiltonian is not gauge invariant. It reports a new gauge-invariant Hamiltonian expressed in terms of physical observables, which the authors say allows defining work and formulating the second…
Near-field radiofrequency electromagnetic exposure assessment
Research
RF Safe Research Library
Jan 1, 2015
This paper presents a near-field RF exposure assessment method comparing standard SAR estimation from E-field measurements in tissue-simulating liquid with a proposed approach based on incident H-field measurements. Experiments were conducted at 900, 1800, and 2450 MHz using dipole antennas and a flat phantom, with…
The Validity and Reliability of the Persian Version Test of Mobile Phone Dependency (TMD).
Research
RF Safe Research Library
Jan 1, 2015
This cross-sectional study developed and validated a Persian version of the Test of Mobile Phone Dependency (TMD) in 350 Tehran university students. Factor analysis identified three factors and the scale showed high internal consistency and moderate test-retest reliability. The authors report a best cut-off point of…
Application of an induced field sensor for assessment of electromagnetic exposure from compact fluorescent lamps.
Research
RF Safe Research Library
Jan 1, 2012
This study investigates instrumentation and procedures to assess electromagnetic exposure from compact fluorescent lamps (CFLs) by measuring both incident and induced fields in the 10 kHz–1 MHz range. For some CFLs, incident electric fields exceeded ICNIRP reference levels at close distances, but induced fields were…