UnclearInsufficient evidencePaper 2400

Eight-Port millimeter wave MIMO antenna loaded with novel frequency selective surface for higher data rate transmission.

Keywords

#millimeter-wave #28 GHz #n257 #n261 #MIMO antenna #frequency selective surface #FSS #band-stop filter #realized gain #radiation pattern #SAR

An eight-port 28.0 GHz mmWave MIMO antenna integrated with a 10×10 frequency-selective surface (FSS) is presented, reporting a peak realized gain of 13.89 dBi with directional 2-D radiation patterns. SAR analysis at 28.0 GHz is reported as 0.0274 W/kg.

Study snapshot

PublicationPloS one · 2026

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

In this research, an eight-port multiple-input-multiple-output (MIMO) antenna integrated with frequency frequency-selective surface (FSS) is presented for 28.0 GHz millimeter-wave (n257/n261) bands. The radiating patch consists of a circular-ring shape with a plus-shaped stub embedded in it. The antenna element is fed by a 50 Ω microstrip feed line and a quarter-wave transformer as a matching network. The MIMO antenna measures 50 mm × 50 mm and achieves spatial diversity through an orthogonal arrangement of eight radiating elements. A 10 × 10 array of FSS is also designed at 28.0 GHz and measures 60 mm × 60 mm. The FSS structure is intended for a band-stop filter and consists of a circular ring with a plus-shaped stub. The proposed MIMO antenna has a peak realized gain of 13.89 dBi and features directional 2-D radiation patterns. The specific absorption rate analysis is also performed, resulting in a value of 0.0274 W/kg at 28.0 GHz.

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 directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposuremmWave · 28000 MHz · 0.0274 W/kg

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Antenna performance (gain, radiation pattern)
Specific absorption rate (SAR)

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": "mmWave",
    "source": null,
    "frequency_mhz": 28000,
    "sar_wkg": 0.0274,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Antenna performance (gain, radiation pattern)",
    "Specific absorption rate (SAR)"
  ],
  "main_findings": "An eight-port 28.0 GHz mmWave MIMO antenna integrated with a 10×10 frequency-selective surface (FSS) is presented, reporting a peak realized gain of 13.89 dBi with directional 2-D radiation patterns. SAR analysis at 28.0 GHz is reported as 0.0274 W/kg.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "millimeter-wave",
    "28 GHz",
    "n257",
    "n261",
    "MIMO antenna",
    "frequency selective surface",
    "FSS",
    "band-stop filter",
    "realized gain",
    "radiation pattern",
    "SAR"
  ],
  "suggested_hubs": [
    {
      "slug": "5g-policy",
      "weight": 0.35,
      "reason": "Study concerns 28 GHz mmWave bands (n257/n261) used for 5G-related applications."
    }
  ]
}

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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: 10.1371/journal.pone.0341823
PubMed: 41628194

Read the original paper →