1 25 november 2013 rf safety standards prof ely levine afeka college of engineering
DESCRIPTION
3 Non Ionizing Radiation - Any evidence for health risks ?TRANSCRIPT
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25 November 2013
RF Safety Standards
Prof Ely LevineAFEKA College of Engineering
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CONTENTS
BackgroundFrequenciesStandardsGuidelines
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Non Ionizing Radiation -Any evidence for health risks ?
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Frequencies
50/60 Hz (power)100-400 kHz (Induction)6.78, 13.56, 27.12 MHz (SRD)VHF/UHF (radio, TV)740-2100 MHz (cellular)S/C (2-8 GHz) (wireless)
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ISM - special waivers
6.78, 13.56, 27.12 MHz 433, 868, 915 MHz 2.45, 5.85 GHz24.125 GHz
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Standards
Induced Currents [mA] Electric Fields [V/m] Magnetic Fields [A/m]-[mGauss]Radiation [W/m²]-[mW/cm²]SAR [W/kg]
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Standards
ICNIRP (WHO) Worldwide IEEE ANSI C.95 WorldwideFCC CH.15 and CH.18 USAETSI EN300330-1 EuropeCode 6 Canada
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SUMMARY (general public)
Magnetic Field 50/60 HzSRD (SAR & magnetic/electric) Terminals (SAR)Far Fields (power density)
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Static Magnetic Field (50/60 Hz)
short period of time 1000 mG
constant exposure 2 mG
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SAR (W/kg) whole body head ICNIRP 0.08 2.0 IEEE ANSI 0.08 1.6 CODE 6 0.08 1.6 SAR measurements are not practical under 100 MHz
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0.5 MHz H (A/m) E (V/m)________ ICNIRP 0.73/f = 18 mG 87 V/m IEEE ANSI 16.3/f = 410 mG 614 V/mCODE 6 2.2 A/m = 27 mG 280 V/m 6.78 MHz H (A/m) E (V/m)________ ICNIRP 0.73/f = 1.3 mG 87/f = 33 V/m IEEE ANSI 16.3/f = 30 mG 824/f = 121 V/mCODE 6 2.2/f = 4 mG 280/f = 41 V/m 13.56 MHz H (A/m) E (V/m)________ ICNIRP 0.073 A/m = 1 mG 28 V/m IEEE ANSI 16.3/f = 15 mG 824/f = 60 V/mCODE 6 2.2/f = 2 mG 28 V/m 27.12 MHz H (A/m) E (V/m)_________ ICNIRP 0.073 A/m = 1 mG 28 V/m IEEE ANSI 16.3/f = 7 mG 824/f = 30 V/mCODE 6 2.2/f = 1 mG 28 V/m
Short Range Devices
1 A/m = 12.56 mG
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S(mW/cm²)_______________ 0.4 to 2
ICNIRP f/2000 (400-2000 MHz) 1 (f>2000 MHz) IEEE ANSI f/1500 (300-3000 MHz)CODE 6 f/1500 (300-1500 MHz) 1 (f>1500 MHz)
Far Field 800-2700 MHz