Chapter 10 / 10.8 / 10.8.7

10.8.7 Why Do Waveguides Have A Cutoff Frequency?

Explains propagation modes (TE and TM), why TEM propagation is impossible in hollow waveguides, dominant modes, cutoff frequency, and how waveguide dimensions determine operating frequency.

1. Why Doesn't a Waveguide Behave Like an Ordinary Wire?
2. What Is Meant by a Propagation Mode?
3. Why Is There a Cutoff Frequency?
4. What Determines the Cutoff Frequency?
5. What Is the Dominant Mode?
6. What Happens Above the Cutoff Frequency?
7. Why Can't Waveguides Be Used at Low Frequencies?
8. Why Do Waveguides Have Such Low Loss?
9. Where Are Waveguides Used?
10. Why Is Understanding Cutoff Frequency Important?
11. What Should You Remember?

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