1 / 25

Part II. Physical Layer and Media

Part II. Physical Layer and Media. Chapter 7. Transmission Media. COMP 3270 Computer Networks Computing Science Thompson Rivers University. Learning Objectives. List the three types of guided media. State the reason why higher frequency radio band can transfer more data.

donnamoore
Download Presentation

Part II. Physical Layer and Media

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Part II. Physical Layer and Media Chapter 7. Transmission Media COMP 3270 Computer Networks Computing Science Thompson Rivers University

  2. Learning Objectives • List the three types of guided media. • State the reason why higher frequency radio band can transfer more data.

  3. Transmission medium and physical layer

  4. Classes of transmission media

  5. 1. GUIDED MEDIA Guided media, which are those that provide a conduit from one device to another, include twisted-pair cable, coaxial cable, and fiber-optic cable. Topics discussed in this section: • Twisted-Pair Cable • Coaxial Cable • Fiber-Optic Cable

  6. Twisted-pair cable Twisting: to reduce the mutual interference

  7. UTP and STP cables Unshielded Twisted Pair Shielded Twisted Pair

  8. Categories of UTP cables

  9. Coaxial cable

  10. Categories of coaxial cables

  11. BNC connectors

  12. Optical Fiber

  13. Bending of light ray

  14. Optical fiber

  15. Propagation modes

  16. Using reflection Using refraction These days

  17. Fiber-optic cable connectors

  18. 2. UNGUIDED MEDIA: WIRELESS Unguided media transport electromagnetic waves without using a physical conductor. This type of communication is often referred to as wireless communication. Topics discussed in this section: • Radio Waves • Microwaves • Infrared

  19. Electromagnetic spectrum for wireless communication Microwave 30 GHz

  20. Propagation methods Diffraction Reflection

  21. Bands

  22. Wireless transmission waves ~ 30 G ~ 300 G ~ 400 THz

  23. Omnidirectional antenna

  24. Unidirectional antennas

More Related