2. Wireless Networking
• What is it?
– Wireless networking is the exchange of
data between devices wirelessly. This
works for things like computers, laptops,
3. Wireless Networking
• How does it work?
– Wireless routers send out signals through
microwaves, radio waves, and satellite
connection. Most wireless connections
work off of radio waves. The devices will
receive the waves and interpret them and
show that interpretation on the screen.
The wireless device will then send back its
own waves to the router.
4. Wireless Networking
• Range of frequencies
– 2.4 GHz to 5 GHz
– 10 to the 8th nano meters
• Area of EM spectrum being used
• Wireless Networking used
microwaves and radio waves
5. Wireless Networking
• Timeline
– In 1942 Hedy Lamarr patent a frequency
hopping radio encryption technique
( Spread Spectrum technology) It was
donated to the Navy and was classified to
civilians.
– In 1985 The us Navy declassifies Spread
spectrum technology.
– Federal Commission authorizes spread
spectrum to be used in 3 radio bands.
– Star Bucks launches wireless hot spots in
6. Bluetooth
• What is it? How does it work?
• Blue tooth runs on the same
frequencies wireless networking, which
means it also uses microwaves. It runs
with 2.4 GHz. Microwaves are
transferred from the master device
(Cell phone) to the blue tooth device.
Its has a wavelength of 10 to the 8th
nano meters. The blue tooth device
interprets the microwaves and creates
7. Blue tooth time Line
• 1994- Blue tooth was invented by L. M.
Ericsson
• 2001-Ericsson merged with sony and
became Sony Ericsson
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8. Citations
• Thank you to the websites that made
this project possible.
• www.pcowrld.idg.com.au
• www.pcmag.com
• www.wiki.com
•
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