Tawkon IEEE Presentation

Mobile Phone Radiation – Feb 21st
“Green Communications”

Now keep talking…

Amit Lubovsky Co-Founder tawkon
tawkon proprietary and confidential

Mobile Phone Radiation


Agenda

 Overview
 mobile communication
 cellular radiation

 regulation

 research

 precautionary measures

 tawkon solution


MobileBasic Facts – Basic Facts
Mobile Phones –
Phones
• Allow communication from any location via a network of base stations
• Information is transmitted from the mobile phone to the base station and vice
versa via high-frequency electromagnetic fields
• Radiation intensity is greatest close to its source, i.e. a mobile phone's antenna
• Radiation is only strong while the phone is transmitting, not while idle state
• Radiation decreases sharply with distance to the phone
• Radiation exposure during a call depends on:
– mobile phone emits less when connection quality is good
– better outdoors than in a building
– improves with proximity to a base station
– When connecting to the network and switching from one cell to another, mobile
phones briefly transmit at maximum output power and this is only slowly
reduced


Phones – Basic Facts
MobileRadiation
Electromagnetic


Typical Transmission Power Values
Typical Transmission Power Values

dBm
Power Notes
level
60 dBm 1 kW = 1000 W Typical RF power of microwave oven elements
Maximum output from a UMTS/3G mobile phone
33 dBm 2W
Maximum output from a GSM850/900 mobile phone
30 dBm 1 W = 1000 mW Maximum output from a GSM1800/1900 mobile phone
15 dBm 32 mW Typical WiFi transmission power in laptops.
0 dBm 1.0 mW Bluetooth standard radio, 1 m range
Typical maximum received signal power (−10 to −30 dBm) of
−10 dBm 100 µW
wireless network


SAR
Exposure measurements

• SAR - Specific Absorption Rate
• Electromagnetic radiation (W) that is absorbed by the human body (kg)
• Determined using a human head "phantom"
• Published on the internet and in the instruction manuals
• SAR is measured in a "worst-case" scenario
• 1.6 W/kg exposure limit according to the International
Commission on Non-Ionizing Radiation Protection
(ICNIRP, adopted 1996)
• The lower SAR of the device, the lower the radiation that is absorbed by the
body


SAR Cont.

Cellular: 1.19
Wi-Fi: 0.52 1.19
1.39

Cellular: 1.39 0.58
Wi-Fi: 0.12 0.52

0.12
Cellular: 0.58
Wi-Fi: 0.08 0.08


Regulation

UK :
When buying a mobile phone, Russia:
one must insist on low SAR Establishment of institutions
levels to asses the affects of
Department of Health 2005 mobile radiation
Russia Senate & Ministry of
Health 2009;

USA:
San Francisco is first in the US to
adopt regulations which obligate full Finland:
disclosure of SAR levels at every Parents are requested to
mobile phone sales point (June recommend their children to
2010) use text messages rather
Senate & Ministry of Health 2009 than calls
Finnish Radiation and Nuclear
Safety Authority

France:
Legislative initiative to ban mobile Israel:
sales without speaker and to ban Switzerland:
When buying a mobile Children and teens
mobile advertising to teenagers should use mobile
Senate & Ministry of Health 2009 phone, one must insist on
low SAR levels phones only in cases of
Federal Office of Public Health emergency
2009 Ministry of Health 2008


Research

• Around 35 studies till today (starting 1996), all on adults

Interphone
• Published June 2010 - 13 countries, 10 years
• overseen by the World Health Organization (WHO )
• compared cell phone usage for more than 5,000 people with brain tumors
(glioma and meningioma) and a similar number of healthy controls.
• People who use their mobile phones for at least 30 minutes a day for 10
years (“heavy users”) have a greater risk of developing brain cancer
(30%- 40%).


Research Cont.

Cosmos
• World Health Organization (WHO) and the UK Health Protection Agency (HPA).
• Long term health monitoring of a large group of people to determine if there are any health
issues linked to long term exposure to radio frequency energy from cell phone use.
• Started in 2010, COSMOS study will follow approximately 300,000 adult cell phone users in
Europe for 20 to 30 years

Mobi-Kids
• International multi-center study involving 14 European and non-European countries
• Investigating the relationship between exposure to radio frequency energy from communication
technologies including cell phones and brain cancer in young people
• Started in 2010, nearly 2000 young people between 10 to 24 years


Precautionary Measures

Source: EWG (Environmental Working Group)


Precautionary Measures Cont.


Exposure Measurement


About us


tawkon is a unique approach to handling public concerns
of mobile radiation

reduce exposure… without reducing usage

Drive Safely Eat Wisely Talk Responsibly


How it all started…


Let People
See Radiation

5
| Now keep talking...

Take
Action

6

Know It
Worked

7

Avoid
Cumulative
Exposure

8

Help Others

9

During a Call

10

Over Time

11

It takes leadership to innovate
Now keep talking...


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