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Waves and Propagation

1E2AE1 Waves and Propagation Electronics and Applied Physics S6
Lessons : 14 h TD : 14 h TP : 0 h Project : 0 h Total : 28 h
Co-ordinator : Chantal Gunther
Prerequisite
Non renseigné
Course Objectives
Basic concepts and main properties of wave phenomena
- Acoustic waves
- Electromagnetic waves (RF / HF + light)
- Electrical signals in transmission lines

Engineering applications
- Contactless measurement (telemetry, velocimetry, radar)
- Non-destructive evaluation (NDE with ultrasonics, ultrasound)
- Telecommunications

These concepts and formalism will be completed in various courses such as: "Antennas, Microwave and EMC", "Sensors", "Optics", "Electronics", Telecommunications and NDE.
Syllabus
Part I: General properties of acoustic and electromagnetic waves
- Ultrasonic transmitter / receiver
- Propagation equation for acoustic and electromagnetic waves
- Wave packet; Dispersion and absorption; wave guiding

Part II: Interface between two media for an electromagnetic wave
- Characteristic impedance and power carried by an electromagnetic wave
- TE / TM polarization; Reflection / transmission at the interface between two media- Impedance matching and total reflection

Part III: Electromagnetic waves in a transmission line
- Line described by its distributed parameters
- Conditions of continuity and characteristic impedance of a line
- Matching
Practical work (TD or TP)
Generation and propagation of ultrasonic waves, ultrasonic rangefinder, ultrasound, Doppler effect

Propagation resonator (appl: antireflection layer, interference filter)

Transmission line: propagation eq, propagation speed, Zc of a standard coaxial cable, power delivered to a resistive load, impedance transformer
Acquired skills
Emission, propagation of waves in different physical domains
Use of waves in engineering techniques (telecommunications, contactless measurements)
Bibliography
Initiation à l'acoustique, Antonio Fischetti, Belin Sup Sciences
Physique des ondes PC-PSI, Laurent Sartre, Bréal
Micro-ondes. Tome 1, Lignes, guides et cavités, Cours et exercices, Paul-François Combes, Dunod

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