The document discusses different types of wireless transmission media including infrared, radio waves, and satellite. It describes that infrared devices typically need to be within 5 meters to communicate, while Bluetooth uses short-range radio waves with a 1Mbps transfer rate and 10 meter range. WiFi uses IEEE standards and can transfer data between 11-54 Mbps within 30 meters. Satellites receive microwave signals from earth, amplify them, and send them back over a wide area to multiple stations.

1. CHAPTER 3: COMPUTER
NETWORKS AND
COMMUNUCATIONS
Wireless Transmission Media

2. At the end of the lesson, student should
be able to:
Identify various types of wireless communication
media such as:
 Infrared
 Radio waves
 Satellite

3. Infrared
 Using infrared light
waves
 To communicate,
infrared devices often
must be within about 5
meters (15 feet).

4. Radio waves
IEEE 802.15.1
 Bluetooth technology uses
short-range radio waves
to transmit data between
two bluetooth devices
 The data transfers
between devices at a rate
of 1Mbps.
 To communicate, bluetooth
devices often must be
within about 10 meters
(33 feet)

5. Radio waves
IEEE 802.11b/IEEE 802. 11g
 WiFi (Wireless Fidelity):
The data transfers
between devices at a rate
of 11-54 Mbps.
 To communicate, WiFi
devices often must be
within about 30 meters
(100 feet)

6. Satellite
 Is a space station that
receives microwave
signals from an earth-
based station,
amplifies (strengthens)
are signal back over a
wide area to any
number of earth-
based stations.