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Smith Simulator

version 1.7 (897 KB) by

It allows to do on computer all you were doing with pencil and paper with some beautiful features.



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Smith simulator is an excellent learning and teaching resource which aims at ruling out old methods of using pencil, paper, geometry instruments to solve Smith chart and provides new and clean environment to solve and demonstrate Smith chart with various embedded features to save time and improve accuracy.
For more HELP see attached help or contact me.

Comments and Ratings (9)


Gaurav Gupta

Gaurav Gupta (view profile)

first extract this smith zip file in a location other than temp, then run smith by selecting that folder as current folder :)

Jerry Walker

I'm running student ver 2010a and smith.m stopped at line 97

??? Error using ==> imread at 372
does not exist.

Error in ==> Smith>Initialize_Figure at 1830
    [a,map] = imread(str);

Error in ==> Smith at 97

Selcuk Fidan


Gaurav Gupta

Gaurav Gupta (view profile)

they are omitted for simplicity, anyway you won't be needing this in this simulator, as you can reach to any point using Input panel

Louis Kok

Well done, just a bit of trouble without the "grid" lines that conventional paper Smith charts have (they may be dashed like the unity lines).

Jan Simon

Jan Simon (view profile)

For the non-experts, it would be useful to explain, what a Smith chart is used for.



With this new play-ON feature you can record the steps made and distribute to other users. This feature offers flexibility to record STEPS irrespective of view settings which makes it different from normal Record.


1. New feature of determining traced path length directly when moving along constant reflection co-efficient circle is added.

2. Admittance can also be shown of particular point while moving cursor by selecting from edit menu.


fixed a minor path tracing bug


updated help


Undo redo database management bug fixed


Fixed path forming bug

MATLAB Release
MATLAB 7.13 (R2011b)

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