Relevant bibliographies by topics / RF-EMF

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'RF-EMF'

Author: Grafiati
Published: 2 June 2025
Last updated: 22 June 2025

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Journal articles on the topic "RF-EMF"

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Goh, Jaeseong, Dongwha Suh, Gyuyeon Park, et al. "1.7 GHz long-term evolution radiofrequency electromagnetic field with stable power monitoring and efficient thermal control has no effect on the proliferation of various human cell types." PLOS ONE 19, no. 5 (2024): e0302936. http://dx.doi.org/10.1371/journal.pone.0302936.

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Long-term evolution (LTE) radiofrequency electromagnetic field (RF-EMF) is widely used in communication technologies. Thus, the influence of RF-EMF on biological systems is a major public concern and its physiological effects remain controversial. In our previous study, we showed that continuous exposure of various human cell types to 1.7 GHz LTE RF-EMF at a specific absorption rate (SAR) of 2 W/Kg for 72 h can induce cellular senescence. To understand the precise cellular effects of LTE RF-EMF, we elaborated the 1.7 GHz RF-EMF cell exposure system used in the previous study by replacing the RF signal generator and developing a software-based feedback system to improve the exposure power stability. This refinement of the 1.7 GHz LTE RF-EMF generator facilitated the automatic regulation of RF-EMF exposure, maintaining target power levels within a 3% range and a constant temperature even during the 72-h-exposure period. With the improved experimental setup, we examined the effect of continuous exposure to 1.7 GHz LTE RF-EMF at up to SAR of 8 W/Kg in human adipose tissue-derived stem cells (ASCs), Huh7, HeLa, and rat B103 cells. Surprisingly, the proliferation of all cell types, which displayed different growth rates, did not change significantly compared with that of the unexposed controls. Also, neither DNA damage nor cell cycle perturbation was observed in the 1.7 GHz LTE RF-EMF-exposed cells. However, when the thermal control system was turned off and the subsequent temperature increase induced by the RF-EMF was not controlled during continuous exposure to SAR of 8 W/Kg LTE RF-EMF, cellular proliferation increased by 35.2% at the maximum. These observations strongly suggest that the cellular effects attributed to 1.7 GHz LTE RF-EMF exposure are primarily due to the induced thermal changes rather than the RF-EMF exposure itself.
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Zeleke, Berihun M., Christopher Brzozek, Chhavi R. Bhatt, et al. "Wi-fi related radiofrequency electromagnetic fields (RF-EMF): a pilot experimental study of personal exposure and risk perception." Journal of Environmental Health Science and Engineering 19, no. 1 (2021): 671–80. http://dx.doi.org/10.1007/s40201-021-00636-7.

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AbstractThe impact of providing people with an objectively measured personal radiofrequency electromagnetic fields (RF-EMF) exposure information on the risk perception of people is not well understood. We conducted an experimental study, among three groups of participants, to investigate the risk perception of people towards RF-EMF from Wi-Fi sources (ISM 2.4 GHz) by providing participants with either basic text, precautionary information, or a summary of their personal RF-EMF exposure measurement levels. Participants provided with personal RF-EMF exposure measurement information were more confident in protecting themselves from RF-EMF exposure, compared to those provided with only basic information. Nonetheless, neither the exposure perception nor the risk perception of people to Wi-Fi related RF-EMF differed by the type of information provided. The measured Wi-Fi signal levels were far below international exposure limits. Furthermore, self-rated levels of personal RF-EMF exposure perception were not associated with objectively measured RF-EMF exposure levels. Providing people with objectively measured information may help them build confidence in protecting themselves from Wi-Fi related RF-EMF exposure.
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Mate, Rohan, Geza Benke, Sarah Loughran, Michael Abramson, Claire Vajdic, and Ken Karipidis. "O-317 OCCUPATIONAL EXPOSURE TO RADIOFREQUENCY ELECTROMAGNETIC FIELDS AND THE RISK OF BRAIN CANCER." Occupational Medicine 74, Supplement_1 (2024): 0. http://dx.doi.org/10.1093/occmed/kqae023.1212.

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Abstract Introduction The relationship between exposure to occupational sources of radiofrequency electromagnetic fields (RF-EMF) and possible health effects has raised public concerns for many years, particularly for cancer incidence, including brain cancer. Exposure to RF-EMF is generally low, however for workers near certain RF-EMF sources, the exposure can be relatively high and be maintained for long periods. Previous studies have deficiencies in occupational RF-EMF exposure assessment and because of this have not been able to discount a possible association with health effects. Recently, two Job-exposure-matrices (JEM), the INTEROCC and CANJEM, have provided RF-EMF exposure information for 119 and 418 occupations respectively. These JEMs allow for a better-informed investigation of how occupational RF-EMF affects human health. Methods Using exposure data from CANJEM and lifetime occupational histories from the Australian Genomics and clinical Outcomes of Glioma (AGOG) case-control study, we investigated the association between RF-EMF exposure and glioma. The analysis used unconditional binary logistic regression to calculate adjusted odds ratios (ORs) and 95% confidence intervals (95%CIs). Results AGOG recruited 521 cases and 381 controls. We found no association between any RF-EMF exposure and glioma with OR=0.96 (95%CI 0.70-1.32). Discussion While the results do not support an association between RF-EMF and brain cancer, only CANJEM has been applied to-date. Analysis with the INTEROCC JEM will be undertaken upon completion of its construction. The two JEMs will also be applied to two further Australian case control studies investigating lymphoma and multiple myeloma. Conclusion Our preliminary results do not support a positive association between occupational exposure to RF-EMF and glioma.
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Tran, Nam Trung, Luca Jokic, Julian Keller, Jens Uwe Geier, and Ralf Kaldenhoff. "Impacts of Radio-Frequency Electromagnetic Field (RF-EMF) on Lettuce (Lactuca sativa)—Evidence for RF-EMF Interference with Plant Stress Responses." Plants 12, no. 5 (2023): 1082. http://dx.doi.org/10.3390/plants12051082.

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The increased use of wireless technology causes a significant exposure increase for all living organisms to radio frequency electromagnetic fields (RF-EMF). This comprises bacteria, animals, and also plants. Unfortunately, our understanding of how RF-EMF influences plants and plant physiology remains inadequate. In this study, we examined the effects of RF-EMF radiation on lettuce plants (Lactuca sativa) in both indoor and outdoor environments using the frequency ranges of 1890–1900 MHz (DECT) at 2.4 GHz and 5 GHz (Wi-Fi). Under greenhouse conditions, RF-EMF exposure had only a minor impact on fast chlorophyll fluorescence kinetics and no effect on plant flowering time. In contrast, lettuce plants exposed to RF-EMF in the field showed a significant and systemic decrease in photosynthetic efficiency and accelerated flowering time compared to the control groups. Gene expression analysis revealed significant down-regulation of two stress-related genes in RF-EMF-exposed plants: violaxanthin de-epoxidase (VDE) and zeaxanthin epoxidase (ZEP). RF-EMF-exposed plants had lower Photosystem II’s maximal photochemical quantum yield (FV/FM) and non-photochemical quenching (NPQ) than control plants under light stress conditions. In summary, our results imply that RF-EMF might interfere with plant stress responses and reduced plant stress tolerance.
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Veerana, Mayura, Nan-Nan Yu, Si-Jin Bae, et al. "Enhancement of Fungal Enzyme Production by Radio-Frequency Electromagnetic Fields." Journal of Fungi 8, no. 11 (2022): 1187. http://dx.doi.org/10.3390/jof8111187.

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Enzyme production by microorganisms on an industrial scale has demonstrated technical bottlenecks, such as low efficiency in enzyme expression and extracellular secretion. In this study, as a potential tool for overcoming these technical limits, radio-frequency electromagnetic field (RF-EMF) exposure was examined for its possibility to enhance production of an enzyme, α-amylase, in a filamentous fungus, Aspergillus oryzae. The RF-EMF perfectly resonated at 2 GHz with directivity radiation pattern and peak gain of 0.5 dB (0.01 Watt). Total protein concentration and activity of α-amylase measured in media were about 1.5–3-fold higher in the RF-EMF exposed (10 min) sample than control (no RF-EMF) during incubation (the highest increase after 16 h). The level of α-amylase mRNA in cells was approximately 2–8-fold increased 16 and 24 h after RF-EMF exposure for 10 min. An increase in vesicle accumulation within fungal hyphae and the transcription of some genes involved in protein cellular trafficking was observed in RF-EMF-exposed samples. Membrane potential was not changed, but the intracellular Ca2+ level was elevated after RF-EMF exposure. Our results suggest that RF-EMF can increase the extracellular level of fungal total proteins and α-amylase activity and the intracellular level of Ca2+.
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Kim, Ju Hwan, Kyung Hwun Chung, Yeong Ran Hwang, et al. "Exposure to RF-EMF Alters Postsynaptic Structure and Hinders Neurite Outgrowth in Developing Hippocampal Neurons of Early Postnatal Mice." International Journal of Molecular Sciences 22, no. 10 (2021): 5340. http://dx.doi.org/10.3390/ijms22105340.

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Exposure to radiofrequency electromagnetic fields (RF-EMFs) has increased rapidly in children, but information on the effects of RF-EMF exposure to the central nervous system in children is limited. In this study, pups and dams were exposed to whole-body RF-EMF at 4.0 W/kg specific absorption rate (SAR) for 5 h per day for 4 weeks (from postnatal day (P) 1 to P28). The effects of RF-EMF exposure on neurons were evaluated by using both pups’ hippocampus and primary cultured hippocampal neurons. The total number of dendritic spines showed statistically significant decreases in the dentate gyrus (DG) but was not altered in the cornu ammonis (CA1) in hippocampal neurons. In particular, the number of mushroom-type dendritic spines showed statistically significant decreases in the CA1 and DG. The expression of glutamate receptors was decreased in mushroom-type dendritic spines in the CA1 and DG of hippocampal neurons following RF-EMF exposure. The expression of brain-derived neurotrophic factor (BDNF) in the CA1 and DG was significantly lower statistically in RF-EMF-exposed mice. The number of post-synaptic density protein 95 (PSD95) puncta gradually increased over time but was significantly decreased statistically at days in vitro (DIV) 5, 7, and 9 following RF-EMF exposure. Decreased BDNF expression was restricted to the soma and was not observed in neurites of hippocampal neurons following RF-EMF exposure. The length of neurite outgrowth and number of branches showed statistically significant decreases, but no changes in the soma size of hippocampal neurons were observed. Further, the memory index showed statistically significant decreases in RF-EMF-exposed mice, suggesting that decreased synaptic density following RF-EMF exposure at early developmental stages may affect memory function. Collectively, these data suggest that hindered neuronal outgrowth following RF-EMF exposure may decrease overall synaptic density during early neurite development of hippocampal neurons.
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Zeleke, Berihun, Christopher Brzozek, Chhavi Bhatt, et al. "Personal Exposure to Radio Frequency Electromagnetic Fields among Australian Adults." International Journal of Environmental Research and Public Health 15, no. 10 (2018): 2234. http://dx.doi.org/10.3390/ijerph15102234.

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The measurement of personal exposure to radiofrequency electromagnetic fields (RF-EMFs) is important for epidemiological studies. RF-EMF exposure can be measured using personal exposimeters that register RF-EMFs over a wide range of frequency bands. This study aimed to measure and describe personal RF-EMF exposure levels from a wide range of frequency bands. Measurements were recorded from 63 participants over an average of 27.4 (±4.5) hours. RF-EMF exposure levels were computed for each frequency band, as well as from downlink (RF from mobile phone base station), uplink (RF from mobile phone handsets), broadcast, and Wi-Fi. Participants had a mean (±SD) age of 36.9 ± 12.5 years; 66.7% were women; and almost all (98.2%) from urban areas. A Wi-Fi router at home was reported by 61 participants (96.8%), with 38 (61.2%) having a Wi-Fi enabled smart TV. Overall, 26 (41.3%) participants had noticed the existence of a mobile phone base station in their neighborhood. On average, participants estimated the distance between the base station and their usual residence to be about 500 m. The median personal RF-EMF exposure was 208 mV/m. Downlink contributed 40.4% of the total RF-EMF exposure, followed by broadcast (22.4%), uplink (17.3%), and Wi-Fi (15.9%). RF-EMF exposure levels on weekdays were higher than weekends (p < 0.05). Downlink and broadcast are the main contributors to total RF-EMF personal exposure. Personal RF-EMF exposure levels vary according to day of the week and time of day.
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Turuban, Maxime, Hans Kromhout, Javier Vila, et al. "Occupational exposure to radiofrequency electromagnetic fields and brain tumor risk: Application of the INTEROCC job‐exposure matrix." International Journal of Cancer 156, no. 3 (2024): 538–51. https://doi.org/10.1002/ijc.35182.

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AbstractRadiofrequency electromagnetic fields (RF‐EMF, 100 kHz to 300 GHz) are classified by IARC as possibly carcinogenic to humans (Group 2B). This study evaluates the potential association between occupational RF‐EMF exposure and brain tumor risk, utilizing for the first time, a RF‐EMF job‐exposure matrix (RF‐JEM) developed in the multi‐country INTEROCC case–control study. Cumulative and time‐weighted average (TWA) occupational RF‐EMF exposures were estimated for study participants based on lifetime job histories linked to the RF‐JEM using three different methods: (1) by considering RF‐EMF intensity among all exposed jobs, (2) by considering RF‐EMF intensity among jobs with an exposure prevalence ≥ the median exposure prevalence of all exposed jobs, and (3) by considering RF‐EMF intensity of jobs of participants who reported RF‐EMF source use. Stratified conditional logistic regression models were used, considering various lag periods and exposure time windows defined a priori. Generally, no clear associations were found for glioma or meningioma risk. However, some statistically significant positive associations were observed including in the highest exposure categories for glioma for cumulative and TWA exposure in the 1‐ to 4‐year time window for electric fields (E) in the first JEM application method (odds ratios [ORs] = 1.36, 95% confidence interval [95% CI] 1.08, 1.72 and 1.27, 95% CI 1.01, 1.59, respectively), as well as for meningioma for cumulative exposure in the 5‐ to 9‐year time window for electric fields (E) in the third JEM application method (OR = 2.30, 95% CI 1.11, 4.78). We did not identify convincing associations between occupational RF‐EMF exposure and risk of glioma or meningioma.
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Olejárová, Soňa, Roman Moravčík, and Iveta Herichová. "2.4 GHz Electromagnetic Field Influences the Response of the Circadian Oscillator in the Colorectal Cancer Cell Line DLD1 to miR-34a-Mediated Regulation." International Journal of Molecular Sciences 23, no. 21 (2022): 13210. http://dx.doi.org/10.3390/ijms232113210.

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Radiofrequency electromagnetic fields (RF-EMF) exert pleiotropic effects on biological processes including circadian rhythms. miR-34a is a small non-coding RNA whose expression is modulated by RF-EMF and has the capacity to regulate clock gene expression. However, interference between RF-EMF and miR-34a-mediated regulation of the circadian oscillator has not yet been elucidated. Therefore, the present study was designed to reveal if 24 h exposure to 2.4 GHz RF-EMF influences miR-34a-induced changes in clock gene expression, migration and proliferation in colorectal cancer cell line DLD1. The effect of up- or downregulation of miR-34a on DLD1 cells was evaluated using real-time PCR, the scratch assay test and the MTS test. Administration of miR-34a decreased the expression of per2, bmal1, sirtuin1 and survivin and inhibited proliferation and migration of DLD1 cells. When miR-34a-transfected DLD1 cells were exposed to 2.4 GHz RF-EMF, an increase in cry1 mRNA expression was observed. The inhibitory effect of miR-34a on per2 and survivin was weakened and abolished, respectively. The effect of miR-34a on proliferation and migration was eliminated by RF-EMF exposure. In conclusion, RF-EMF strongly influenced regulation mediated by the tumour suppressor miR-34a on the peripheral circadian oscillator in DLD1 cells.
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Vargová, Blažena, Juraj Kurimský, Roman Cimbala, et al. "Ticks and radio-frequency signals: behavioural response of ticks (Dermacentor reticulatus) in a 900 MHz electromagnetic field." Systematic and Applied Acarology 22, no. 5 (2017): 683. http://dx.doi.org/10.11158/saa.22.5.7.

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The electromagnetic field (EMF) is present in the environment throughout the world and encompasses both natural and human-made sources of electromagnetic fields. It has been shown that EMF influences a variety of biological systems, including the behavioural responses of both vertebrates and invertebrates. As such, determining the effects of the EMF on the ecosystem in detail may be important for understanding the ecology and biology of organisms, particularly those, such as ticks, that are important in disease transmission. Our main goal was to determine if the tick, Dermacentor reticulatus, interacts with the EMF. An experimental behavioural test of tick sensitivity to radio frequency power radiation was performed under laboratory conditions. Tests were performed in an electromagnetic compatibility laboratory in a radio frequency electromagnetic field (RF-EMF) anechoic chamber. Ticks were irradiated using a Double-Ridged Waveguide Horn Antenna with 900 MHz RF-EMF. The applied radio-frequency power was tuned below the proposed limit for public exposure to mobile phone base stations. We found that exposure induces an immediate tick locomotor response manifested either in a previously unreported jerking movement of the whole body or in jerking of the first pair of legs. Overall, ticks exhibited significantly greater movement in the presence of the RF-EMF. Significant sex differences relative to RF-EMF exposure were observed in both response variables. In the presence of RF-EMF, body jerking by females was greater than in males and vice versa for leg jerks. This study represents the first experimental evidence of a behavioural response of D. reticulatus ticks to exposure to RF-EMF.
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Dissertations / Theses on the topic "RF-EMF"

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Jomaa, Kassem. "Caractérisation du champ proche électromagnétique et exposition professionnelle aux ondes RF en milieu industriel." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT111/document.

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L'étude des émissions rayonnées d'une source dans tout l'espace, est essentielle pour l'analyse dosimétriques et l’analyse des interférences électromagnétiques. L'importance du dernier augmentent en raison de la nécessité d'avoir une prédiction de la fiabilité des circuits électroniques. De plus, l'utilisation quotidienne des dispositifs et des systèmes émettant des champs électromagnétiques radiofréquences ne cesse d'augmenter. Certains de ces dispositifs fonctionnent à proximité du corps humain, et les opérateurs se trouvent dans la région des champs proches de la source rayonnante, et ils sont exposés à des niveaux de champs électromagnétiques pouvant être élevés. Pour cette raison, l'analyse dosimétrique, qui passe par une cartographie tridimensionnelle (3D) au voisinage de la source rayonnante, doit être effectuée. Pour ce type d'applications, plusieurs scans des champs proches doivent être effectués dans différents plans afin de construire la cartographie de champs 3D. Étant un processus difficile dans les études de compatibilité électromagnétique, la caractérisation en champ proche est traitée par plusieurs algorithmes qui proposent différentes approches pour réaliser le scanning requis au voisinage de la source rayonnante.Dans ce travail, nous introduisons un système de scanning 3D avec des sondes de champ magnétique à trois axes à faible coût. Le fait de disposer de telles sondes permet la mesure simultanée des trois composantes du champ magnétique sur la base d'un seul scan au voisinage du dispositif testé. Les sondes conçues se composent de trois boucles orthogonales combinées ensemble; la première sonde contient trois boucles conventionnelles réunies dans un cube en plastique d'une dimension totale de 10 × 12 × 13 mm3, tandis que la deuxième sonde est une sonde PCB imprimée sur un substrat FR4 de 3,2 mm avec une dimension réduite de 9 × 9 × 3,2 mm3. Les sondes conçues ont été étalonnées avec une cellule TEM et les facteurs d'antenne correspondants ont été extraits. Le système de scanning présenté utilise comme un instrument de mesure un oscilloscope RF- 4 canaux, qui donne la possibilité de mesurer à la fois dans le domaine temporel et dans le domaine fréquentiel.La deuxième partie de cette thèse présente un algorithme de reconstruction basé sur la méthode du spectre d'ondes planes. Afin de réduire le nombre des scans et donc les exigences de temps, l'algorithme présenté nécessite juste un scan en champ proche 2D des composantes de champ, pour reconstruire la distribution du champ magnétique 3D au-dessus du dispositif rayonnant.La troisième partie de la thèse est consacrée à l'analyse dosimétrique des champs électromagnétiques rayonnés à proximité des systèmes RFID et des machines de soudage RF. L'évaluation de l'exposition en champ proche des champs rayonnés des antennes de lecture RFID, fonctionnant à 13,56 MHz et utilisées dans les bibliothèques, a été réalisée. Les mesures du champ magnétique près de l'antenne ont été établies à l'aide des sondes conçues. Les résultats sont ensuite analysés et comparés aux réglementations des normes européennes et des lignes directrices de l'ICNIRP. En outre, l'exposition aux champs électromagnétiques RF des travailleurs à proximité de machines de soudage RF dans un environnement industriel est étudiée. Ces machines, fonctionnant à 27 MHz, émettent de forts rayonnements et l'exposition a eu lieu dans la région de champ proche. La distribution spatiale des champs électromagnétiques dans cette région est étudiée à la fois dans des simulations numériques et des mesures réelles<br>The analysis of radiated emissions from a source throughout the space, is very essential for both dosimetric and electromagnetic interference analysis. The concerns about the latter are growing because of the need to have prediction of the system reliability of the electronic circuits. Moreover the everyday use of devices and systems emitting radio frequency electromagnetic fields is continuously increasing. Some of these devices are operating in the vicinity of human body, and operators are in the near-field region of the radiating source, and they are exposed to electromagnetic fields. For this reason, dosimetric analysis, that shows the necessity of having three dimensional (3D) field mapping in the vicinity of the radiating source, should be performed. For this kind of applications, several scans of the near fields should be done within different planes in order to build the 3D field mapping. Being a challenging process in electromagnetic compatibility studies, near field characterization is being treated by several algorithms that propose different approaches to achieve the required scanning on the radiating source.In this work, we introduce a 3D scanning system with a low cost three axis magnetic field probes. Having such probes allow the simultaneous measure of the three components of the magnetic field based on a single planner scan above the device under test. The designed probes consist of three orthogonal loops combined together; the first probe contains three conventional loops joined in a plastic cube with a total dimension of 10×12×13 mm3, whereas the second probe is a PCB probe printed on an FR4 substrate of 3.2 mm with a reduced dimension of 9×9×3.2 mm3. The designed probes were calibrated with a TEM cell and the corresponding antenna factors were extracted. The presented scanning system uses an oscilloscope as a measuring instrument that gives the possibility of both time and frequency domain measurements. The second part of this thesis presents a reconstruction algorithm based on plane wave spectrum method. In order to reduce the number of scans and hence the time requirements, the presented algorithm requires just a 2D near field scan of the field components, to reconstruct the 3D magnetic field distribution above the radiating device.The third part of the thesis is devoted for the dosimetric analysis of the radiated electromagnetic fields near RFID systems and RF-welding machines. The near-field exposure assessment of the radiated fields from RFID reader antennas operating at 13.56 MHz and used in Libraries was performed. The measurements of the magnetic field near the antenna were established using the designed probes. The results are then analyzed and compared to the regulations in European Directives and ICNIRP Guidelines. Moreover, the exposure to RF electromagnetic fields of workers near RF-welding machines in industrial environment is studied. These machines, operating at 27 MHz, emit strong radiation and the exposure takes place in the near-field region. The spatial distribution of the electromagnetic fields in this region is studied in both numerical simulations and measurements
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Badran, Tamer. "Balayage de spectre utilisant les récepteurs radio logicielle." Electronic Thesis or Diss., Sorbonne université, 2020. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2020SORUS264.pdf.

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L'architecture conventionnelle utilisée par toutes les publications précédentes pour le récepteur de balayage de spectre est basée sur le CAN en BB, donc il a une consommation d'énergie élevée, une complexité plus élevée et souffre d'inadéquations de circuits et de non-linéarité. Dans ce travail, nous proposons d'utiliser un récepteur RF basé sur CAN delta-sigma en PB. Les CAN PB DS ajustables précédemment signalés implémentée de manière complexe. Nous présentons une implémentation efficace du CAN PB DS accordable. Un récepteur de détection de spectre, basé sur l'architecture frontale RF à faible consommation d'énergie proposée dans cette thèse, est également proposé. Le récepteur complet proposé ne souffre pas d'un déséquilibre 1/Q. Les résultats de simulation pour montrer l'impact de la non-linéarité du circuit sur les performances sont présentés. Une implémentation de circuit d'un backend numérique du système proposé est présentée. Cette implémentation comprend un mélangeur à conversion descendante efficace, un filtre de décimation, un bloc FFT et un module de détection d'énergie. L'implémentation a été validée à l'aide l'outil SignalTab. Des études, ne présentent que des résultats analytiques ou de simulation, visant à montrer l'impact du déséquilibre 1/Q sur les performances de détection du spectre ont déjà été publiées. Dans ce travail, nous présentons la première mesure matérielle du déséquilibre I/Q sur les performances de détection du spectre. Dans le domaine médical, nous présentons pour la première fois une étude de l'effet de l'exposition aux RF-EMF sur les nouveau-nés via une acquisition simultanée de signaux RF et de paramètres physiologiques<br>Spectrum sensing applications cover wide variety, such as efficient utilization of frequency spectrum, and in medical applications. The conventional architecture used by all the previous publications for spectrum sensing receiver is based on baseband ADC, hence it has high power consumption, higher complexity, and suffers from circuit mismatches and nonlinearity. In this work, we propose using an RF receiver based on bandpass delta-sigma ADC. It is much more convenient to have a tunable BP ΔΣ ADC to simplify the spectrum sweeping task. The previously reported tunable BP ΔΣ ADC’s are implementing tunability in a complex manner. We present an efficient implementation of tunable BP ΔΣ ADC with fixed ratio between the sampling frequency and center frequency. That fixed ratio further simplifies the implementation of the down conversion mixer and decimation filter which serve as the digital backend of the receiver. A spectrum sensing receiver, based on the power-efficient RF front end architecture proposed in this thesis, is also proposed. The proposed complete receiver does not suffer from I/Q imbalance that highly affect the spectrum sensing performance. Simulation results to show the circuit nonlinearity impact on the performance are presented. A circuit implementation of a digital backend of the proposed system is presented. This implementation comprises an efficient down conversion mixer, decimation filter, custom FFT block, and energy detection module. The implementation was validated on Altera FPGA using the on-chip logic analyzer via the SignalTab tool.Studies to show the impact of I/Q imbalance on spectrum sensing performance were previously published. Nevertheless, those publications presented only either analytical or simulation results. In this work, we present the first hardware measurement of the I/Q imbalance on spectrum sensing performance using a commercial SDR transceiver platform.In the medical field, we also present for the first time a study of the effect of RF-EMF exposure on neonates by performing a simultaneous acquisition of RF signals along with recording the physiological parameters of neonates. Using R-Studio, the stationarity of the signals to be correlated was checked, a transformation was performed on the non-stationary signals. Finally, cross correlation between the acquired RF signal (average of the whole spectrum or in a specific band) and each of the recorded physiological parameters did not show an observable impact of RF-EMF exposure on neonates
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Coleman, PJ. "Real time effects of mobile phone radiation on working memory : a systematic review & meta-analysis." Thesis, 2022. https://eprints.utas.edu.au/47613/.

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My objective was to undertake a systematic review and meta-analysis of real-time mobile phone radiation (RF-EMF) impacts upon working memory performance in humans. To be eligible for inclusion the studies needed to include response time and/or accuracy measures for real and sham exposure, using a mobile in a natural position against the head for talking, within a controlled environment. Following the eligibility screening and data reduction, I produced a global meta-analysis that used all 19 reports and 733 participants. A random-effects model (Cohen’s d) generated a point estimate of negligible size that was not statistically significant, SMD = 0.04, p = 0.54, 95% CI [-0.06, 0.14]. This result is consistent with the most previous meta-analyses of 2017, with further refinements of only pulsed (GSM) radiofrequency of real-time effects, and inclusion of four further studies. While the global meta-analysis was not significant, there were substantial risks of bias informing this outcome. Detection biases of exposure conditions (power and duration), research funding management, and individualised testing would improve the validity and reliability of future research. Related research increasingly focus upon impacts from varied environmental sources of RF-EMF and controlled trials could support the conclusions. The systematic review and meta-analysis process should also continue with unbiassed removal of flawed studies. This acknowledges the value of evidence-based decision making for managing real effects to inform public health decision-making.
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Book chapters on the topic "RF-EMF"

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Mevissen, Meike. "Transcriptomics Approach in RF EMF Research." In Cancer Risk Evaluation. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527634613.ch16.

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Dasenbrock, Clemens, and Jochen Buschmann. "Animal Studies on RF EMF Cancer Effects." In Cancer Risk Evaluation. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527634613.ch7.

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Valberg, Peter A. "Electromagnetic Waves (EMF and RF) and Health Effects." In Hamilton & Hardy's Industrial Toxicology. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118834015.ch101.

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Yekeh Yazdandoost, Kamya, and Ilkka Laakso. "Exposure to RF EMF from 5G Handheld Devices." In 13th EAI International Conference on Body Area Networks. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-29897-5_27.

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Mortazavi, SAR, Kanu Megha, Seyedeh Fatemeh Shams, Sahar Mohammadi, and SMJ Mortazavi. "Radiation from Mobile Phones and Cell Towers, Risks, and Protection." In An Introduction to Non-Ionizing Radiation. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136890123010013.

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Modern life is strongly associated with new technologies such as telecommunication and wireless devices. These new technologies strongly affect the way people communicate, learn, train, think and solve their problems. Today, modern cell phones not only send and receive phone calls, but they also allow people to send and receive short messages, and e-mails, share photos and videos, write, edit and share documents, play games, listen to music, watch movies, surf the Internet, find an address using GPS (Global Positioning Systems) and use a wide range of applications. Given this consideration, excessive use of smartphones is associated with growing global concerns over the health effects of radiofrequency electromagnetic fields (RF-EMF) generated by these devices. As discussed by WHO, considering the very large number of people who use mobile phones, even a small increase in the risk of adverse health effects, either cancer or other health effects, could have key public health implications. WHO believes that research about these health effects is mostly focused on potential adverse effects of mobile phones, not their base stations, because the RF-EMF levels of mobile phones are 3 orders of magnitude higher than those of base stations. Therefore, in this chapter, due to the greater likelihood of adverse health effects of handsets, we mainly focused on reviewing the current scientific evidence on health risks associated with mobile phones. However, the health effects of RF-EMF exposure on people living in the proximity of mobile base stations are also reviewed.
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Chandan, Rakesh Kumar, Prem Nath Suman, and Keshav Sinha. "The Environmental Impact of 5G Technology on Humans and Animals." In Advances in Library and Information Science. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7258-0.ch003.

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5G has the potential to become the future communication technology as it has the capability to provide faster download speeds, extremely low latency, and higher capacity. The deployment of 5G will be as a wi-fi that will cover the entire globe. It will serve an elevated number of devices than the previous technology; therefore, the distribution of radiofrequency electromagnetic fields (RF-EMF) will grow rapidly. Although no direct adverse effect has been reported by the service providers, the real health impact of this advanced technology is still under investigation. It is expected that the mm-wave frequency range (30-300 GHz) is ideal for 5G technology, and the devices, in this operating range, will work at very low power due to which small penetration is supposed to occur, but it will require a high density of small cells. It will increase the chances of human exposure to RF-EMF. In this chapter, a theoretical framework is used to describe the effect of 5G technology on humans and animals and also the rumors related to the adaptation of 5G technology.
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Valentini, Elia, and Giuseppe Curcio. "Mobile Phones-Like Electromagnetic Fields Effects on Human Psychomotor Performance." In Encyclopedia of Mobile Phone Behavior. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8239-9.ch057.

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Nowadays nearly more than half of human beings on the planet are directly or indirectly exposed to an “evolutionary” novel physical agent: the electromagnetic fields (EMFs) emitted by cellular phones, base stations, as well as other types of wireless communication technologies. More than 10 years ago several studies reported that cognitive functions of human beings may have been altered while exposed to radiofrequency (RF) EMFs. Yet, the genuine effect of these non-ionizing radiations on human behaviour was not replicated by several other recent and more methodologically robust studies. Latest reviews and metanalyses confirmed the paucity of evidence in favour of psychomotor and cognitive effects of acute RF EMF exposure on human volunteers in well controlled laboratory settings. Thus, despite persisting concerns on potential biologic effects of acute RF EMFs irradiation, there is substantial lack of evidence that RF radiation can affect cognitive functions in humans.
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Curcio, Giuseppe. "Human Psychomotor Performance Under the Exposure to Mobile Phones-Like Electromagnetic Fields." In Advances in Computer and Electrical Engineering. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7598-6.ch067.

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The first studies on humans addressing cognitive functioning changes as a consequence of radiofrequency (RF) EMFs exposure date back to almost 20 years ago. The effects on human behavior showed in those pioneering works indicated an improvement of performance under the exposure to the signal, compared with sham exposure. These first and striking results were not fully replicated by subsequent studies that were characterized by a more methodological robustness and attention to exposure aspects. In accordance with this view, latest reviews and metanalyses have confirmed the paucity of evidence and the lack of reliability of psychomotor and cognitive effects of acute RF EMF exposure on human volunteers, particularly when assessed in well controlled laboratory settings. Thus, despite the public opinion about potential biologic effects of acute RF EMFs irradiation, it can be concluded that to date there is substantial lack of evidence about a negative influence of non-ionizing radiations on cognitive functioning in humans.
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Curcio, Giuseppe. "Human Psychomotor Performance Under the Exposure to Mobile Phones-Like Electromagnetic Fields." In Encyclopedia of Information Science and Technology, Fourth Edition. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2255-3.ch532.

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The first studies on humans addressing cognitive functioning changes as a consequence of radiofrequency (RF) EMFs exposure, date back to almost 20 years ago. The effects on human behaviour showed in those pioneering works indicated a somewhat improvement of performance under the exposure to the signal, compared with sham exposure. These first and striking results were not fully replicated by subsequent studies that were characterized by a more methodological robustness and attention to exposure aspects. In accordance with this view, latest reviews and metanalyses have confirmed the paucity of evidence and the lack of reliability of psychomotor and cognitive effects of acute RF EMF exposure on human volunteers, particularly when assessed in well controlled laboratory settings. Thus, despite the public opinion about potential biologic effects of acute RF EMFs irradiation, it can be concluded that to date there is substantial lack of evidence about a negative influence of non-ionizing radiations on cognitive functioning in humans.
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Chen, Guangdi, Yumin Jin, and Dariusz Leszczynski. "Chapter 4. In Vitro Cellular Response to ELF-MF and RF-EMF." In Interdisciplinary Research of Magnetic Fields and Life Sciences. EDP Sciences, 2021. http://dx.doi.org/10.1051/978-2-7598-2500-4.c006.

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Conference papers on the topic "RF-EMF"

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Djuric, Nikola, Dragan Kljajic, Nicola Pasquino, Nunzia Solmonte, and Snezana Djuric. "Time Variability Analysis of RF-EMF Data from Continuous Monitoring Systems." In 2024 5th International Conference on Emerging Trends in Electrical, Electronic and Communications Engineering (ELECOM). IEEE, 2024. https://doi.org/10.1109/elecom63163.2024.10892174.

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Pasquino, Nicola, Nunzia Solmonte, Nikola Djuric, Dragan Kljajic, and Snezana Djuric. "Model-Based Clustering of RF-EMF Monitoring Data to Analyze Time Variability." In 2024 IEEE International Symposium on Measurements & Networking (M&N). IEEE, 2024. http://dx.doi.org/10.1109/mn60932.2024.10615478.

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Moraitis, Nektarios, and Konstantina S. Nikita. "Time-Series RF-EMF Predictions for Exposure Assessments Using Machine Learning Techniques." In 2025 19th European Conference on Antennas and Propagation (EuCAP). IEEE, 2025. https://doi.org/10.23919/eucap63536.2025.10999319.

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Aerts, Sam, Joe Wiart, and John Bolte. "Combining Advanced Tools to Monitor RF-EMF Exposure in Next-Generation Telecommunication Networks." In 2024 IEEE INC-USNC-URSI Radio Science Meeting (Joint with AP-S Symposium). IEEE, 2024. http://dx.doi.org/10.23919/inc-usnc-ursi61303.2024.10632288.

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Tukimin, Roha, Syarfa Zahirah Sapuan, Wan Syazlin Wan Yunoh, and Nur Afrina Zainal. "Measurement and Mapping of Radiofrequency Electromagnetic Field (RF-EMF) Radiation Exposure in Malaysia's Environment." In 2024 IEEE 15th Control and System Graduate Research Colloquium (ICSGRC). IEEE, 2024. http://dx.doi.org/10.1109/icsgrc62081.2024.10690979.

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Malik, Sudha, Robbert Schulpen, Laurens A. Bronckers, and Ulf Johannsen. "Balancing between Data Efficiency and RF-EMF Exposure Reduction Via Beam Switching in 5G mm-Wave Channel." In 2024 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC). IEEE, 2024. http://dx.doi.org/10.1109/apwc61918.2024.10701631.

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Raj, Vijilius Helena, N. Sreevani, H. Pal Thethi, Neeraj Chahuan, Sajjad Ziara, and G. Shilpa. "ML-Based Modeling and Prediction of RF-EMF Exposure in mmWave 5G Networks for Enhanced Urban Deployment." In 2025 International Conference on Next Generation Communication & Information Processing (INCIP). IEEE, 2025. https://doi.org/10.1109/incip64058.2025.11019809.

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Xu, Bo, Mats Gustafsson, Shuai Shi, Zhinong Ying, and Sailing He. "Upper Bound Study of 5G RF EMF Exposure." In 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2018. http://dx.doi.org/10.1109/apusncursinrsm.2018.8609310.

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Yamaguchi-Sekino, Sachiko, Miwa Ikuyo, Kazuhisa Kamegai, Masao Taki, Teruo Onishi, and Soichi Watanabe. "Effects of Feedback Report with Objectively Measured Radio-Frequency Electromagnetic Fields (RF-EMF) Levels on Recipient’s Subjective RF-EMF Exposure Levels." In 2023 International Symposium on Electromagnetic Compatibility – EMC Europe. IEEE, 2023. http://dx.doi.org/10.1109/emceurope57790.2023.10274354.

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Lunca, Eduard, and Alexandru Salceanu. "An overview of RF-EMF monitoring systems and associated monitoring data." In 2016 International Conference and Exposition on Electrical and Power Engineering (EPE). IEEE, 2016. http://dx.doi.org/10.1109/icepe.2016.7781374.

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