Transmission modes & medias networking

13/04/23 Transmission media & modes 1

TRANSMISSION MEDIA

ANDMODES

13/04/23 Transmission media & modes2

Transmission Media


13/04/23 Transmission media & modes

Classes of transmission media

Transmission Media

Guided (wired) Unguided (wireless)

Twisted-Pair Cable

Co-Axial Cable

Fibre – Optic Cable

Radio waves

Micro waves

Infra red

4

• Twisted – Pair CableTwisted – Pair Cable

• Co – axial CableCo – axial Cable

• Fiber optic CableFiber optic Cable


GUIDED MEDIA

5


Twisted – Pair Cable

6


UTP and STP Cables

7


UTP Connector

8


UTP Performance

9


Co-axial Cable

10


BNC Connectors – Bayone Neil Concelman

11


Co-axial Cable Performance

12


Optical Fiber

13


Bending of Light ray

14

Propagation Modes

Propagation Modes

Multimode Single Mode

Step -Index

Graded - Index


Modes


Contd…

Step index

16


Fiber Construction

17


Fiber – Optic cable Connectors

18



Wireless Transmission

3 kHz 300GHz 400THz 900THz

Radio wave & Micro wave Infrared

20

• 3kHz to 300GHz

• Omni directional

• Travel Long distance

• Applications

• AM & FM radio

• Television

Radio Waves


• 3kHz to 300GHz

• Unidirectional

• Cannot Penetrate walls

• Applications

• Satellite Networks

• Wireless LAN’s

Micro Waves


• 300GHz to 400THz

• Short – range communication

• Cannot Penetrate walls

• Applications

• Data transmission

• Remote control

Infrared


Transmission Modes

Transmission Modes

Serial Mode Parallel Mode

Synchronous

Asynchronous

Isochronous



Parallel Transmission

25


Serial Transmission

26


Asynchronous Transmission

27


Synchronous Transmission

28

• In isochronous transmission we cannot have

uneven gaps between frames.

• Transmission of bits is fixed with equal gaps.


Isochronous Transmission

29



Mobile

Transmission modes & medias networking