RF Shielded Hat for Protecting Cameraman from EMF Exposure

Abstract

This paper presents a new layer of absorber for RF Shielded Hat. The objective of this studied is to create and develop a new layer of absorber for RF Shielded Hat made from Microwave Absorbing Sheet that can protect the cameraman from electromagnetic field (EMF). The Microwave Absorbing Sheet is used because of super light weight, good microwave shielding, high absorption and no problem for skin contact. Three different types of protective hat are chosen: back of the hat with no protection to allow adjustment of size, rear hat that covers the neck and hat that covers head and thyroid region. All hats are sewn with microwave absorber sheet. The investigation was aimed to study whether the types of hat worn reduce the electromagnetic exposure to human head. The measurement campaign was carried out in the anechoic chamber to completely absorb reflections of either sound or electromagnetic waves. The wireless video camera operated in frequency of 1.9 GHz to 2.7 GHz. The position of the wireless video camera was fixed on the right of the cameraman shoulder where this position is much closer to our heads. The experiment will be investigated in two different situations, while being exposed in the sham condition and also 2.45 GHz signal. Both of the measurement will be undertaken during the pre, during and after the experiments.

AI evidence extraction

Outcomes measured

• RF/EMF exposure reduction to the head (measurement in anechoic chamber)
• Shielding/absorption performance of RF shielded hats made with microwave absorbing sheet

Limitations

• No quantitative results reported in the provided abstract
• Sample size and participant details not stated
• Exposure metrics (e.g., field strength, SAR) not specified
• Duration/timing of exposures not quantified

Suggested hubs

• occupational-exposure (0.6)
  Protective equipment intended to reduce RF exposure for a cameraman during work with a wireless video camera.

{
    "study_type": "engineering",
    "exposure": {
        "band": "RF",
        "source": "wireless video camera",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": "cameraman (human head exposure context)",
    "sample_size": null,
    "outcomes": [
        "RF/EMF exposure reduction to the head (measurement in anechoic chamber)",
        "Shielding/absorption performance of RF shielded hats made with microwave absorbing sheet"
    ],
    "main_findings": null,
    "effect_direction": "unclear",
    "limitations": [
        "No quantitative results reported in the provided abstract",
        "Sample size and participant details not stated",
        "Exposure metrics (e.g., field strength, SAR) not specified",
        "Duration/timing of exposures not quantified"
    ],
    "evidence_strength": "insufficient",
    "confidence": 0.66000000000000003108624468950438313186168670654296875,
    "peer_reviewed_likely": "unknown",
    "keywords": [
        "RF shielded hat",
        "microwave absorbing sheet",
        "wireless video camera",
        "anechoic chamber",
        "2.45 GHz",
        "1.9–2.7 GHz",
        "occupational protection",
        "cameraman",
        "EMF exposure"
    ],
    "suggested_hubs": [
        {
            "slug": "occupational-exposure",
            "weight": 0.59999999999999997779553950749686919152736663818359375,
            "reason": "Protective equipment intended to reduce RF exposure for a cameraman during work with a wireless video camera."
        }
    ]
}

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