Propagation guidée

In brief

Know how to physically interpret the interaction of plane electromagnetic waves with material interfaces

– Know how to write and interpret the energy conservation in presence of electromagnetic fields

– Know the main properties of plane electromagnetic waves

– Know what the Bewster angle stands for

– Know what a mode means in waveguides

– Know what the cut-off frequencies of waveguides mean

– Know what the dispersion phenomenon is

– Know how to determine the electromagnetic power transmitted in waveguides

– Know how to write and interpret the energy conservation in waveguides

I- Reminder: Basic electromagnetic theory

I-1- Instantaneous electromagnetic fields

I-2- Maxwell’s equations

I-3- Time-harmonic electromagnetic fields

I-4- Electromagnetic energy

II- Plane electromagnetic waves

II-1- Modes in free space

II-2- Key properties of plane electromagnetic waves

II-3- Energy conservation law

II-4- Group and phase velocities

II-5- Example: oblique incidence of electromagnetic plane waves upon a stationary dielectric interface

III- Field theory of guided electromagnetic waves

III-1- Propagating and evanescent modes in waveguides

III-2- Dispersion in waveguides

III-3- Electromagnetic fields of modes in waveguides

III-4- Energy conservation law

III-5- Group and phase velocities in waveguides

III-6- Example: lossless rectangular hollow waveguides with metallic and magnetic walls