Technology 3 ESO – Unit 12 COMMUNICATION TECHNOLOGY extra activities
1 – Watch the video on “Structure of Optical Fiber” and answer:
- a) What part of the optical fibre guides the light?
- b) What is the difference between the material of the “core” and the material of the “cladding”?
- c) What is the function of the “cladding”?
2 – Watch the video on “How does your mobile phone work?” and answer:
- a) What is contained in the digital signal? How?
- b) What is the function of the antenna?
- c) How are “0`s” and “1`s” transmitted using frequency?
- d) What is “cellular technology”?
- e) How is the call established when the receiver is not in the home MSC?
- f) Why is frequency spectrum important?
- g) What was the difference between 1G and 2G?
- h) What is expected from 5G?
