Assessing The Compliance Of Electromagnetic Fields Radiated by Base Stations And WiFi Access Points With International Guidelines On University Campus

Radiation protection dosimetry · 2020 · Unclear · Low evidence

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UnclearLow evidencePaper 1560

Study snapshot

PublicationRadiation protection dosimetry · 2020

Study typeexposure_assessment

Reported directionUnclear

Evidence ratingLow

Abstract

Assessing The Compliance Of Electromagnetic Fields Radiated by Base Stations And WiFi Access Points With International Guidelines On University Campus Sajedeh Keshmiri, Neda Gholampour, Vahid Mohtashami. Assessing The Compliance Of Electromagnetic Fields Radiated by Base Stations And wifi Access Points With International Guidelines On University Campus. Radiat Prot Dosimetry. 2020 Nov 24;ncaa183. doi: 10.1093/rpd/ncaa183. Abstract This paper presents a series of electromagnetic field measurements performed on the campus of Ferdowsi University of Mashhad in order to assess the compliance of radiation levels of cellular base stations and WiFi access points with international guidelines. A calibrated, broadband and isotropic probe is used and recommendations of International Telecommunication Union (ITU) are followed up throughout measurements. More than 300 outdoor and indoor locations have been systematically chosen for measurements. The recorded data are post-processed and compared with the guideline of International Commission on Non-Ionizing Radiation Protection (ICNIRP). Measured power densities of WiFi access points are low and do not exceed 1% of the level allowed by ICNIRP. For cellular base stations, measured power density is usually low outdoors, but reaches up to 16% of the allowed radiation level in publicly accessible indoor locations. Comprehensive exposure assessment, as recommended by ITU, has been performed to estimate the maximum possible radiation of one indoor base station. It is concluded that precautionary actions have to be taken by university authorities to limit the presence of students in close proximity to specific indoor antennas. Moreover, comprehensive exposure assessment is more likely necessary for indoor base stations whereas such assessment is not usually required outdoors. pubmed.ncbi.nlm.nih.gov

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment

Effect directionunclear

PopulationUniversity campus (Ferdowsi University of Mashhad); publicly accessible indoor and outdoor locations

Sample size300

ExposureNot supplied

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

Broadband isotropic measurements at >300 indoor/outdoor campus locations were compared with ICNIRP guideline levels. WiFi power densities were reported as low and did not exceed 1% of ICNIRP limits. Cellular base-station power density was usually low outdoors but reached up to 16% of the allowed level in publicly accessible indoor locations; authors conclude precautionary actions are needed to limit close proximity to specific indoor antennas and that comprehensive exposure assessment is more necessary for indoor base stations than outdoors.

Outcomes measured

Power density measurements
Compliance with ICNIRP guideline levels
Estimated maximum possible radiation for an indoor base station (comprehensive exposure assessment per ITU recommendations)

Limitations

Specific frequencies/bands not reported in the abstract
Measurement time frame and temporal variability not described
No health outcomes assessed; compliance/exposure-only study
Details of measurement protocol (e.g., averaging time, instrument model) not provided in the abstract

View raw extracted JSON

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": null,
    "source": "base station and WiFi access point",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "University campus (Ferdowsi University of Mashhad); publicly accessible indoor and outdoor locations",
  "sample_size": 300,
  "outcomes": [
    "Power density measurements",
    "Compliance with ICNIRP guideline levels",
    "Estimated maximum possible radiation for an indoor base station (comprehensive exposure assessment per ITU recommendations)"
  ],
  "main_findings": "Broadband isotropic measurements at >300 indoor/outdoor campus locations were compared with ICNIRP guideline levels. WiFi power densities were reported as low and did not exceed 1% of ICNIRP limits. Cellular base-station power density was usually low outdoors but reached up to 16% of the allowed level in publicly accessible indoor locations; authors conclude precautionary actions are needed to limit close proximity to specific indoor antennas and that comprehensive exposure assessment is more necessary for indoor base stations than outdoors.",
  "effect_direction": "unclear",
  "limitations": [
    "Specific frequencies/bands not reported in the abstract",
    "Measurement time frame and temporal variability not described",
    "No health outcomes assessed; compliance/exposure-only study",
    "Details of measurement protocol (e.g., averaging time, instrument model) not provided in the abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic field measurements",
    "power density",
    "base stations",
    "WiFi access points",
    "university campus",
    "ICNIRP",
    "ITU",
    "compliance",
    "indoor exposure",
    "outdoor exposure"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.9,
      "reason": "Exposure levels were compared with ICNIRP guideline limits."
    },
    {
      "slug": "school-wi-fi",
      "weight": 0.55,
      "reason": "Includes WiFi access point measurements in an educational campus setting."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1093/rpd/ncaa183
PubMed: 33230555

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