Associations between Individual and Geospatial Characteristics and Power of 4G Signals Received by Mobile Phones
Research
RF Safe Research Library
Jan 1, 2025
This exposure assessment study analyzed smartphone-logged 4G LTE RSSI and GPS data from adults in France to identify determinants of downlink signal strength. RSSI varied with geospatial factors (distance to antennas, antenna density, urbanicity) and time of day, and was also influenced by technical smartphone…
Assessment of 5G RF-EMF Exposure during Large-Scale Public Events via Field Measurements
Research
RF Safe Research Library
Jan 1, 2025
This exposure-assessment study conducted field measurements of 5G downlink RF-EMF during a large public festival in Valencia, Spain, and compared them with a baseline day. Measurements covered 700 MHz and 3500 MHz bands across three network operators and five locations, using 6-minute and 30-minute durations. The…
Temporal change of outdoor RF-EMF levels in four European countries: a microenvironmental measurement study
Research
RF Safe Research Library
Jan 1, 2025
This microenvironmental measurement study assessed temporal trends in outdoor RF-EMF exposure between 2016 and 2023 in the Netherlands, Switzerland, Belgium, and Spain using harmonized walking-route measurements with exposimeters. The authors report no significant change in mobile base station (downlink) exposure…
Auto-Induced Downlink Radiofrequency Electromagnetic Field Exposure at 3.5 GHz With Focusing Near the Head
Research
RF Safe Research Library
Jan 1, 2025
This exposure-assessment study uses FDTD simulations to evaluate auto-induced downlink RF-EMF exposure at 3.5 GHz when downlink energy is focused toward user equipment near the head. Exposure varied substantially by device position (ear, eyes, nose) and by the precoding technique used. The authors report that the…
In-Situ Measurements of Radiofrequency Electromagnetic Fields Measurements Around 5G Macro Base Stations in the UK
Research
RF Safe Research Library
Jan 1, 2025
This exposure assessment performed RF spot measurements in line-of-sight to 56 active 5G macro base stations across 30 publicly accessible UK locations. Power density was measured across 420 MHz–6 GHz under multiple scenarios (background, streaming, downlink speed test, and extrapolated SS-RSRP decoding). Reported…
RF-EMF exposure assessment with add-on uplink exposure sensor in different microenvironments in seven European countries
Research
RF Safe Research Library
Jan 1, 2025
This exposure assessment study introduces a cost-efficient add-on sensor attached to a smartphone to quantify auto-induced uplink RF-EMF transmission across 100–6000 MHz in multiple microenvironments. Activity-based surveys were conducted in seven European countries under non-user, maximum downlink, and maximum…
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…
Temporal Change of Outdoor Rf-Emf Levels Four in European Countries: A Microenvironmental Measurement Study
Research
RF Safe Research Library
Jan 1, 2024
This microenvironmental measurement study assessed temporal trends in outdoor RF-EMF exposure from 2016 to 2023 in four European countries using repeated walking-route measurements with exposimeters. The abstract reports that data did not suggest significant changes in mobile base station (downlink) exposure over…
Comprehensive Analysis of Magnetic Flux Density and RF-EMF Exposure in Electric Buses: A Case Study from Samsun, Turkey.
Research
RF Safe Research Library
Jan 1, 2024
This case study measured magnetic flux density and RF-EMF on electric buses on two routes in Samsun, Turkey, across different driving conditions and times of day. It reports route- and condition-dependent variability in magnetic fields, with braking associated with higher readings on one route, and lower overall…
Study and Analysis of 4G-5G Spectrum Mobile Signals on Germination Seed and Further Growth
Research
RF Safe Research Library
Dec 15, 2022
This study describes a planned and initial experiment assessing RF radiation from user devices in frequency bands common to 4G/5G communications on Butter Bean seed germination and subsequent growth. The setup considered uplink/downlink radiation patterns and exposure-related factors such as frequency and distance.…
Artificial Neural Network-Based Uplink Power Prediction From Multi-Floor Indoor Measurement Campaigns in 4G Networks.
Research
RF Safe Research Library
Jan 1, 2021
This paper describes multi-floor indoor LTE measurement campaigns aimed at enabling assessment and monitoring of RF-EMF exposure, with emphasis on uplink exposure via mobile phone transmit power. Because uplink transmit power is not directly available from off-the-shelf devices, the authors propose an artificial…
Radiofrequency electromagnetic field affects heart rate variability in rabbits.
Research
RF Safe Research Library
Jan 1, 2020
This double-blind animal study examined whether RF EMF exposure slightly exceeding occupational limits affects heart rate variability in rabbits. Across two exposure setups (device-generated RF and real base-station downlink signals), the authors report increased HRV indices (HF-HRV and rMSSD) alongside lower heart…
Characterisation of spatial and temporal variability of RF-EMF exposure levels in urban environments in Flanders, Belgium.
Research
RF Safe Research Library
Jan 1, 2019
This exposure-assessment study used on-body calibrated personal exposimeters to characterize spatial and temporal variability of personal RF-EMF exposure across microenvironments in five cities in Flanders, Belgium. Brussels showed the highest mean total exposure, while Antwerp had higher downlink exposure than…
Comparison of radiofrequency electromagnetic field exposure levels in different everyday microenvironments in an international context.
Research
RF Safe Research Library
Jan 1, 2018
This exposure assessment quantified RF-EMF levels using portable, high-sampling-rate devices across 94 outdoor microenvironments and 18 public transport vehicles in six countries. Mean outdoor exposure ranged from 0.23 to 1.85 V/m, and public transport exposure ranged from 0.32 to 0.86 V/m. Exposure varied…