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Visualizing Wave Propagation

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Visualizing Wave Propagation

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17 Apr 2012 (Updated )

Visualize wave propagation through media with different impedances and propagation velocities.

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Description

Wave Propagation is a natural phenomenon that is important in many physical systems. Text books leave much to be desired regarding visualization of wave propagation since they are not animated. The package has a sequence of 6 models that have both a transient pulse excitation as well as a sine wave excitation. The model sequence starts with a one transmission line version that has user definable source and load impedance and evolves to a three line model using an exponentially tapered matching section.
Using these models, the student can gain an intuitive understanding of transmission, reflection, superposition, impedance matching, Standing Wave Ratio, and many other wave phenomenons.

This work was inspired by the 1959 Bell Labs film on Waves:
http://techchannel.att.com/play-video.cfm/2011/3/7/AT&T-Archives-Similarities-of-Wave-Behavior

Required Products SimPowerSystems
Simulink
MATLAB
MATLAB release MATLAB 8.4 (R2014b)
MATLAB Search Path
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Comments and Ratings (3)
04 Nov 2013 Lyuboslav Petrov

Unfortunately BLAS and LAPACK loading errors prevent me from testing and studying the code again, using R2013b. I do remember however, that it worked a while ago. MATLAB need to sit down and work on this.

25 Nov 2012 Lyuboslav Petrov  
26 Apr 2012 Patrice Brunelle

Excellent job Dick.
When you disconnect the load and let the line open-circuit you can even observe the well known phenomea of bouncing back wave: http://www.allaboutcircuits.com/vol_2/chpt_14/4.html

Updates
26 Sep 2013

Models were updated to be in compliance with changes made to R2013B.

26 Sep 2013

Models updated to be compliant with changes in R2013B.

08 Dec 2014

Updated for R2014b.

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