Archive

The iPhone 17 Air is a design flex: a 5.64 mm ultra-thin iPhone with a gorgeous 6.6-inch Super Retina XDR OLED and A19-class speed. But RF-conscious buyers should pause—its hotspot and simultaneous SAR readings sit essentially at the FCC’s 1.6 W/kg ceiling. It’s a strong phone that demands safer-use discipline.

RF Safe argues that while it has operated since 1998 and emphasizes “physics-based” design and education, the broader anti-radiation phone case market is widely criticized for hype and potentially misleading “blocking” claims. The post says some experts consider the category ineffective or even counterproductive,…

This paper reports results from a large-scale, multi-phase measurement campaign in mainland France assessing changes in RF exposure associated with 5G deployment from 2020 to 2024. Using more than 24,000 on-ground measurements in direct view of 5G antennas, it finds small average increases in broadband exposure and…

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…

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…

This study measured RF electric field exposure around BTS antennas in Sabzevar, Iran across multiple times and distances, and assessed residents' sleep quality. E-field levels varied by time, distance, and suburban versus downtown location, while microenvironment differences were not significant. Sleep quality…

This in vitro study evaluated SAR and erythrocyte membrane stability during exposure to a fully textile wearable antenna at 2.41 GHz under realistic (6.3 mW) and conservative (450 mW) input power conditions. It reports 1 g average SARs of 0.5758 W/kg and 41.13 W/kg, respectively. For membrane stability at 6.3 mW,…

This study developed a mathematical and computer simulation model to analyze RF-EMF exposure in a human head phantom, motivated by potential therapeutic applications. The modeled exposure used a Yagi-Uda antenna at 64 MHz with SAR 0.6 W/kg and compared field distribution using one versus four antennas. COMSOL Bioheat…

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…

This engineering study examines composite optical dipole nano-antennas made of alternating silica and gold layers. It reports that a 50% filling factor yields a 2.0× increase in electric-field enhancement compared with a pure-gold antenna. The abstract frames the work in terms of photonics applications rather than…

This engineering study investigates resonance behavior in diabolo metal bar optical antennas using FDTD numerical simulations and a dipole oscillator model. It reports that narrowing the antenna waist increases optical absorption and near-field enhancement at resonance and produces a red-shift in resonant…

This engineering study investigates a plasmonic nanostructure composed of a spherical metallic nanoshell with a small metallic nanoparticle (“nanoknob”) on its surface. It reports tunable plasmon resonance behavior driven by nanoshell properties and localized/enhanced electromagnetic fields near the nanoknob under…