Date post: | 02-Jan-2016 |
Category: |
Documents |
Upload: | hyun-chong |
View: | 14 times |
Download: | 1 times |
1
25 November 2013
RF Safety Standards
Prof Ely LevineAFEKA College of Engineering
2
CONTENTS
BackgroundFrequenciesStandardsGuidelines
3
Non Ionizing Radiation -Any evidence for health risks ?
4
5
6
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)
7
ISM - special waivers
6.78, 13.56, 27.12 MHz 433, 868, 915 MHz 2.45, 5.85 GHz24.125 GHz
8
Standards
Induced Currents [mA] Electric Fields [V/m] Magnetic Fields [A/m]-[mGauss]Radiation [W/m²]-[mW/cm²]
SAR [W/kg]
9
Standards
ICNIRP (WHO) Worldwide IEEE ANSI C.95 WorldwideFCC CH.15 and CH.18 USAETSI EN300330-1 EuropeCode 6 Canada
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SUMMARY (general public)
Magnetic Field 50/60 HzSRD (SAR & magnetic/electric) Terminals (SAR)Far Fields (power density)
25
Static Magnetic Field (50/60 Hz)
short period of time 1000 mG
constant exposure 2 mG
26
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
27
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
28
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