Archive
52 postsTraceable Assessment of the Absorbed Power Density of Body Mounted Devices at Frequencies Above 10 GHz
This paper presents a traceable experimental dosimetry method to measure absorbed power density (APD) from body-mounted wireless devices at frequencies above 10 GHz. It combines a miniaturized broadband probe, a composite skin-equivalent phantom, and reconstruction/calibration procedures, with validation using reference antennas. The approach is reported as validated for 24–30 GHz and extendable to 10–45 GHz, supporting regulatory-type testing aligned with international safety standards.
Assessment of Electromagnetic Exposure to a Child and a Pregnant Woman Inside an Elevator in Mobile Frequencies
This study uses anatomically detailed computational models of a five-year-old girl, a pregnant woman in the third trimester, and a fetus to simulate mobile phone RF exposure inside an elevator cabin. Simulations at 1000 MHz and 1800 MHz across 48 configurations evaluated SAR10g, whole-body SAR, and maximum temperature. The abstract reports that configuration (positioning and phone orientation) can substantially change absorption and temperature metrics and calls for broader scenario testing to inform safety guidance for vulnerable populations.
Comparison Between Broadband and Personal Exposimeter Measurements for EMF Exposure Map Development Using Evolutionary Programming
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 measurements affected by body shielding. A genetic algorithm is used to optimize correction factors and support scalable urban exposure mapping, with the authors noting that additional validation in other environments is needed.
Magnetic Field Measurement of Various Types of Vehicles, Including Electric Vehicles
This exposure assessment measured magnetic fields inside modern Japanese EVs, PHEVs, and ICEVs during actual driving using methods aligned with IEC 62764-1:2022. All measured magnetic flux density values were reported to be below ICNIRP public exposure reference levels. The study mapped in-cabin field sources and noted methodological differences may explain higher transient spikes reported in some international studies.
Exposure to radiofrequency electromagnetic fields and IARC carcinogen assessment: Risk of Bias preliminary literature assessment for 10 key characteristics of human carcinogens
This review examined experimental literature on whether RF-EMF exposures within ICNIRP (2020) limits affect IARC key characteristics of human carcinogens. It identified 159 articles and found that 38% of in vitro/in vivo measurements reported statistically significant effects, but higher study quality was associated with fewer reported effects and there was no consistent exposure-response pattern. The authors state that study diversity and generally poor quality prevent high-confidence conclusions for most key characteristics, while recommending replication of the few higher-quality positive findings under stringent standards.
A novel approach for assessments of radiofrequency electromagnetic fields exposure in buildings near telecommunication infrastructure
This paper proposes a new methodology to better assess indoor RF-EMF exposure in buildings near telecommunication base station antennas by refining measurement-point selection. Implemented in four multi-storey buildings in Natal, Brazil, indoor electric field peaks and averages were reported to be substantially higher than ground-level measurements. Although the highest indoor levels remained below ICNIRP recommended limits, the authors argue current regulatory evaluation methods may underestimate indoor exposure in certain building locations.
Effect of elevation on cumulative radiofrequency exposure from multiple communication towers
This exposure assessment measured RF power density across different floors of a high-rise university building using a spectrum analyser and log-periodic antenna. Power density decreased from the ground to the third floor but peaked on the fourth (top) floor. The 900 MHz band showed the highest reported power density (1.16E-03 W/m2), and the authors suggest higher-floor occupants may experience higher RF exposure from nearby communication towers.
Evaluation of Personal Radiation Exposure from Wireless Signals in Indoor and Outdoor Environments
This exposure assessment measured personal RF electric field strength in multiple indoor and outdoor micro-environments in Malaysia using an ExpoM-RF 4 meter and modeled exposure with machine learning (FCNN, XG Boost) and linear regression. Reported exposures were usually below the stated public limit (61.4 V/m), but maximum values in dense urban areas with many base stations were reported to approach 56.7365 V/m. The authors frame near-threshold maxima in high-density areas as a potential health risk and recommend caution and monitoring.
Auto-Induced Downlink Radiofrequency Electromagnetic Field Exposure at 3.5 GHz With Focusing Near the Head
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 choice of normalization strategy can produce cases where ICNIRP basic restrictions are exceeded even when reference levels appear compliant, motivating a precautionary framing for compliance assessment.
In-Situ Measurements of Radiofrequency Electromagnetic Fields Measurements Around 5G Macro Base Stations in the UK
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 total RF and 5G-specific levels were within 1998 ICNIRP public reference levels, with 4G downlink contributing most of the measured exposure.
Exposure to 26.5 GHz, 5G modulated and unmodulated signal, does not affect key cellular endpoints of human neuroblastoma cells
This in vitro study examined whether 26.5 GHz millimeter-wave exposure (continuous wave and 5G-modulated) affects key cellular endpoints in human neuroblastoma cells. Cells were exposed for 3 hours at SAR 1.25 W/kg using a reverberation-chamber system, with assessments including cell cycle and DNA damage. The study reports no effects from exposure alone or when combined with the oxidant menadione, while noting that additional studies across varied conditions are needed.
Rapid Deployment of 5G Wireless Communication and Risk Assessment on Human Health: Quid Novi?
This review discusses the rapid deployment of 5G and the associated debate about potential human health impacts from EMF exposure, particularly at 3.5–26 GHz including millimeter waves. It emphasizes limited published studies in these exposure ranges and highlights EU-funded initiatives and research consortia aimed at closing knowledge gaps. The authors state that guidelines are generally considered adequate at present, but argue that uncertainties—especially regarding long-term exposure—support continued research and precautionary approaches.
Electrohypersensitivity: what is belief and what is known?
This article addresses electrohypersensitivity (EHS) in the context of public health and EMF-related health concerns. It focuses on distinguishing beliefs about EMF effects from what is currently supported by scientific evidence. The provided text notes ongoing debate and concern and calls for critical assessment of both beliefs and empirical findings.
Assessing RF EMF exposure in multiple microenvironments across ten European countries with a focus on 5G
This exposure assessment measured environmental and auto-induced RF-EMF across more than 800 microenvironments in ten European countries, with a focus on 5G-related bands. Non-user environmental exposure was reported to be below international guideline values and similar to prior European research, while induced traffic substantially increased measured exposure, especially in uplink scenarios. The study also reports systematic differences by setting (cities vs villages) and by national precautionary limit policies.
5G EMF Exposure at 3.6 GHz in Greece Using Data From Frequency-Selective Monitoring Sensors
This exposure-assessment study analyzed two years of continuous frequency-selective monitoring from 13 sensors in the five largest cities in Greece, focusing on the 3.6 GHz 5G band. It reports a gradual increase in 3.6 GHz environmental EMF levels over time and greater variability than legacy cellular bands, with 30-minute averaging reducing observed fluctuations. Despite the upward trend and variability, all measurements were reported to remain well below Greek and ICNIRP reference levels, and the authors emphasize the value of continuous monitoring as 5G deployment expands.
Deduction of Extrapolation Factors in Realistic Scenarios for In-Situ Assessment of 5G Base Stations
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 exposure estimates driven largely by antenna radiation patterns. Outdoor environments showed more stable extrapolation than indoor environments, highlighting challenges for reliable exposure assessment when antenna patterns and network configurations are not well characterized.
Assessment of RF EMF Exposure to Car Driver from Monopole Array Antennas in V2V Communications Considering Thermal Characteristics
This modeling study assessed RF-EMF exposure from a 5.9 GHz V2V monopole array antenna integrated into a car roof shark-fin antenna. Using COMSOL simulations with an adult male body model inside a vehicle, the authors estimated localized and whole-body SAR and associated core temperature rise over a 30 min averaging period. Reported SAR and temperature rise values were below ICNIRP occupational thermal-based restrictions, leading the authors to conclude the exposure does not pose a threat under the studied conditions.
Effects of radiofrequency electromagnetic field exposure on cancer in laboratory animal studies, a systematic review
This systematic review evaluated RF EMF exposure and cancer outcomes in experimental animals, including chronic cancer bioassays and tumor-promotion designs. Across 52 included studies, the authors report high certainty of evidence for increased malignant heart schwannomas and gliomas in male rats, and moderate certainty for increased risks of several other tumor types. Many other organ systems showed no or minimal evidence of carcinogenic effects, and the authors note challenges in translating animal findings to human risk assessment due to exposure and mechanistic uncertainties.
Assessing EMF Exposure in Greek Urban and Suburban Areas During 5G Deployment: A Focus on 5G EMF Levels and Distance Correlation
This exposure assessment reports 400 ground-level electric field measurements in Greek urban and suburban areas during 5G deployment. It finds that 4G contributes most to overall measured EMF exposure, while 5G currently contributes less. The study reports an inverse relationship between 3.5 GHz EMF levels and distance from 5G base stations, with urban areas showing higher levels than suburban areas.
Determining the relationship between mobile phone network signal strength and RF-EMF exposure: protocol and pilot study to derive conversion functions
This protocol and pilot study evaluated whether smartphone signal strength indicators can be converted into RF-EMF exposure estimates using derived formulas and regression models. The study reports a positive log-linear association between LTE RSSI and far-field (base station) exposure aggregated by location, while handset-related exposure at the ear and chest during data transmission showed negative log-linear trends with improving signal quality. The authors conclude the ETAIN 5G-Scientist app may support large-scale RF-EMF exposure assessment, but emphasize the need for more data to improve accuracy and address uncertainties in individual measurements.
High Radiofrequency Radiation in the Surroundings of 10 Schools in Örebro, Sweden
This exposure assessment measured outdoor RF radiation from 4G/5G base stations near 10 schools in Örebro, Sweden (October 2024). The authors report maximum levels of 10,716–68,452 μW/m² and state these are far above EUROPAEM EMF guideline ranges; two locations also showed higher peak readings with a second meter. The paper frames these findings as indicating a significant health risk, particularly for children and sensitive groups, though no health outcomes were measured in this study.
Possible effects of RF EMR on contextual fear conditioning, hippocampal perivascular space, apoptosis and adrenal gland microarchitecture in rats
This animal study exposed male Wistar rats to 900 MHz RF-EMR from a mobile phone for 1 hour daily over four weeks and assessed behavior and tissue changes. The authors report altered contextual fear conditioning-related behavior in exposed rats. Histological assessments indicated apoptosis and enlarged perivascular space in the hippocampal CA3 region and apoptotic/inflammatory-like changes in the adrenal zona fasciculata, with no reported differences in adrenal medulla cytoarchitecture.
RF-EMF exposure assessment with add-on uplink exposure sensor in different microenvironments in seven European countries
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 uplink scenarios. Reported power levels were lowest for non-user scenarios and higher during active use, with variation by country, urbanization, and setting. The authors frame the work as supporting future epidemiological research and planned validation against other tools.
Relationship between radiofrequency-electromagnetic radiation from cellular phones and brain tumor: meta-analyses using various proxies for RF-EMR exposure-outcome assessment
Moon et al. (2024) report a systematic review and meta-analysis on cellular phone RF-EMR and brain tumor risk. The abstract summary states elevated risks for three brain tumor types in analyses considering ipsilateral (same-side) phone use and reports increased risk with heavy and long-term use. The text also highlights disagreement with the 2024 WHO review and raises methodological concerns about WHO conclusions.
The effects of radiofrequency exposure on male fertility: A systematic review of human observational studies with dose-response meta-analysis (SR 3)
This systematic review and dose-response meta-analysis synthesizes human observational studies on radiofrequency EMF exposure and male fertility outcomes. It reports evidence of an association between RF exposure and poorer sperm parameters, including reduced quality, motility, and viability. The authors frame the findings as consistent with potential reproductive health risks and call for continued risk assessment and guideline development.