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A novel mobile phone antenna for effectively reducing specific absorption rate

2018 · Benefit · Insufficient evidence

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BenefitInsufficient evidencePaper 1927

An inverted F-shaped mobile phone antenna design was measured in an over-the-air test system and reported low SAR values (<1.4 W/kg; stated range 0.4–1.38 W/kg) along with wide bandwidth performance (700–870 MHz and 1710–2450 MHz) and TRP of about 17.5–19.4 d…

Study snapshot

Publicationmanual · 2018
Study typeengineering
Reported directionBenefit
Evidence ratingInsufficient

Abstract

A novel mobile phone antenna for effectively reducing specific absorption rate He Y, Liang K, Li J, Abbasi QH. A novel mobile phone antenna for effectively reducing specific absorption rate. 12th European Conference on Antennas and Propagation (EuCAP 2018). 9-13 April 2018. Added to IEEE Xplore: 10 December 2018. DOI: 10.1049/cp.2018.1234. Abstract In this paper, a novel mobile phone antenna that can effectively reduce the harm of electromagnetic radiation to the human body is proposed. An inverted F-shaped antenna (IFA) is designed to reduce specific absorption rate (SAR) and all the measurements are done in over the air (OTA) test system. Measured results show that the proposed mobile phone antenna has excellent electrical characteristics such as reflection coefficient (700-870 MHz and 1710-2450 MHz), radiation pattern, total radiation power (TRP >17.5 dBm), hot spot map and low SAR values (< 1.4 W/kg). Due to these advantages, the proposed antenna is used to reduce SAR in the future mobile phone. Excerpts With the significant development of the mobile communication system, mobile phones have become indispensable tools for human daily life. Meanwhile, the number of the mobile phone has increased with an unprecedented rate around the globe including China. Since the three operators fully started 4G business in 2014, more and more users began to pay attention to and select 4G mobile phones with the reduction of 4G fees in 2015. When we make phone calls, the antenna is close to the human's face, and its microwave radiation directly affects the human's head. It will have a negative effect on the human body when the microwave signal power absorbed by the body exceeds the limiting value [1], [2]. Since its damage to human health is long and chronic, many domestic and foreign companies and institutions at present are studying how to keep mobile phones at a suitable level for human radiation [3]. A novel mobile phone antenna with lower SAR values is presented in this paper. By changing the routing of antenna on a mobile phone, it can increase the new amplitude wave to disperse the current peak, so that a new band (LTE band 30) can be obtained. Measured results show that the proposed antenna is simple and effective with wide bandwidths (700-870 MHz and 1710-2450 MHz), stable TRP (17.5-19.4 dBm) and lower SAR values (0.4-1.38 W/kg). In addition, the proposed antenna has lots of advantages, including low cost, compact structure, good stability, as well as easiness for fabrication. The proposed antenna can be a new solution in reducing mobile phone SAR values for modern mobile communication systems. ieeexplore.ieee.org

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 typeengineering
Effect directionbenefit
PopulationNot supplied
Sample sizeNot supplied
ExposureRF · 1.4 W/kg
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: unknown

Main findings

An inverted F-shaped mobile phone antenna design was measured in an over-the-air test system and reported low SAR values (<1.4 W/kg; stated range 0.4–1.38 W/kg) along with wide bandwidth performance (700–870 MHz and 1710–2450 MHz) and TRP of about 17.5–19.4 dBm.

Outcomes measured

  • Specific absorption rate (SAR)
  • Reflection coefficient (700–870 MHz and 1710–2450 MHz)
  • Radiation pattern
  • Total radiation power (TRP)
  • Hot spot map
View raw extracted JSON
{
  "study_type": "engineering",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": 1.4,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Specific absorption rate (SAR)",
    "Reflection coefficient (700–870 MHz and 1710–2450 MHz)",
    "Radiation pattern",
    "Total radiation power (TRP)",
    "Hot spot map"
  ],
  "main_findings": "An inverted F-shaped mobile phone antenna design was measured in an over-the-air test system and reported low SAR values (<1.4 W/kg; stated range 0.4–1.38 W/kg) along with wide bandwidth performance (700–870 MHz and 1710–2450 MHz) and TRP of about 17.5–19.4 dBm.",
  "effect_direction": "benefit",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "mobile phone",
    "antenna",
    "inverted F-shaped antenna",
    "IFA",
    "SAR reduction",
    "over-the-air",
    "OTA",
    "TRP",
    "LTE band 30",
    "700-870 MHz",
    "1710-2450 MHz"
  ],
  "suggested_hubs": []
}
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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: 10.1049/cp.2018.1234
PubMed: Not supplied

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