1

Chapter 2: Transmission Media

Analog vs. Digital Signals

2

Analog Signal Properties

Telegraph

3

Repeater

Coaxial Cable

4

Refraction vs. Reflection

Light Transmission Through Fiber

5

Dealing with Modal Dispersion

Single Mode Fiber

6

Electromagnetic Spectrum

Signal Reception

7

Horn Antenna

8

Towers as Repeaters

Satellite Communications 1

9

Satellite Communications 2

Satellite Bands

10

Atmospheric Interference

Signal Overlap

11

No Signal Overlap

Low Earth Orbit Satellites

12

Signal Relay via Satellites

Teledesic Satellite

13

14

Wireless LAN’s

Max frequency: 2.4 GHzData rate: up to 100Mbs possible

Bluetooth

Wireless technology for connecting electronic devicesDistance up to 10 meters, data rate about 1Mbps

15

Codes

Baudot Code

16

ASCII Code Transmission

17

End of Chapter 2