Electrical Engineering › Section W · Signal conversion and data transmission › Topic W.3
Data transmission media
Every bit that leaves a device travels through something: a copper trace, a cable, a glass fibre or open space. Each medium has its own reach, speed, cost and weaknesses, and choosing well starts with knowing how each one carries a signal.
In this topic
- Sender, medium, receiver
- Traces, wires and coaxial cable
- Twisted-pair cable
- Worked example: loss along a copper cable
- Optical fibre
- Multimode and single-mode fibre
- Worked example: a fibre loss budget
- Wireless transmission and the spectrum
- How radio waves travel
- Common mistakes to avoid
- Key takeaways
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