Electrical Engineering › Section Y · Time-varying fields, Maxwell's equations, and plane waves › Topic Y.8
Uniform plane waves: derivation and characteristics
Solve the wave equation for the simplest possible case, a field that is the same everywhere across a plane, and the main facts about electromagnetic waves fall out: the fields are perpendicular to each other and to the direction of travel, their ratio is a fixed impedance, and their speed is set by the material alone.
In this topic
- The uniform plane wave
- The fields lie in the plane
- Solving along z
- Finding H from E
- Wave impedance
- Wavelength, speed and light
- Worked example: a wave in PTFE
- The plane-wave relations
- Worked example: H from E
- Common mistakes to avoid
- Key takeaways
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