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Smith Chart Plot

version 1.0.0.0 (15.7 KB) by Victor Aprea
Plots a smith chart, and optionally draws reflection coefficient and line of intersection with R=1.

27 Downloads

Updated 01 Apr 2016

View License

Files:
(1) plotsmithchart.m

Usage:

(1) plotsmithchart(Zl,Zo)
Where Zl is the Load Impedence (possibly complex) and Zo is the Characteristic Line Impedence. Plots a smith chart, along with the reflection coefficient circle and the line of intersection with resistive component equal to 1.

(2) plotsmithchart
Without any parameters draws a blank smith chart. Wavelengths toward the generator are labeled around the perimeter.

Example calls:

(1) plotsmithchart(25,50)
Draws a smithchart,calculates and plots the reflection coefficient for a characteristic impedence of 50 ohms and a load impedence of 25 ohms.

(2) plotsmithchart(50+50j,75)
Same as (1) with a load impedence of 50+50j ohms.

(3) plotsmithchart
Plots a blank Smith Chart.

Cite As

Victor Aprea (2021). Smith Chart Plot (https://www.mathworks.com/matlabcentral/fileexchange/1923-smith-chart-plot), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (49)

Markus Jonathan

apu palit

example calls aren't included, I need it

amran hossain

John BG

the best Smith Chart tool I have seen around so far belongs to Herr Dellberger, has a demo free version:

http://www.fritz.dellsperger.net/smith.html

Ferdi Kurnia

Nasim Abdollahi

Saurabh Kataria

Thanks for the file. It would be more helpful if it can support more functions.

Wenjie

Awesome!

If it just plot the standard Smith chart without any input or output required will be even better.

AARON

Thanks very much!!
Can I read the exact value from this plot,for instance, Gama, SWR or angle

Sergio

VEry nice.
The colors make the reading a bit harder. But the rest is cool.

Zane Montgomery

If I may give a suggestion, appending

,'HitTest','off'

to all of your non-data plot commands will make them unselectable

Les French

Fournier Matthieu

kalai vannan

Prakash N

robert chow

Nick C

nice!

hassan rekabi

toto fuentes

thank you very much

Someone who was really in need of this code

THHHHHHHHHHHXXXXXXXXXXXXXXXXXX!!!!!

yanu tika

it's helpfull

tran thanh truc

Should do more things than just plotting it, for example,u can compute the conditional stable for each [S] maxtrix of 4-port network.

shahram karimi

it's very useful if you work on transmission line

Georgios Giannakopoulos

I would like to know how how to plot the frequency responce in the smith chart as appears on the most softwares. Thank you very much.

lalji katariya

give more examples of smithchart simulation in MATLAB

s s

zhi yang

Example calls
are not in file-m ?
I need it,
please help me
thanks

jing wen

ADOEN SION

BAGAIMANA CARA PRAKTIS AGAR DAPAT MENGERTI DAN MAMPU MENJALAN MATLAB"SIMULASI"

chan see

thanks

Lu Yong

It's really very good.

Maraach Bassem

qaisar qadeer

still needs improvement though but its good help for every1 and big time effort too especially in MATLAb ....keep up the good work ....

etsg wetg

Giulio Vitale

yogeshwar Ranga

nobitakung nobiakung

takis soteropoulos

Risha Devi

got some informations about plotting smith chart

Antonio Arce

Great program to verify hand-drawn SWR circles and determining the reflection coefficient.

Manoj P

program for basics and understanding, thanks

Sakari Tainlahti

Good performance Thank!

Franklin Yusti

ninguno

Tom Smithie

This program is good for only ONE value.
If you want to see how a system looks like in a range of frequency (e.g., an inductor from 1MHZ to 500MHZ), this is not your choice.

mohamad Reza Azadi

Bill Chang

parviz mouzafari

Lina Chang

Asside from being capable of plotting impedances and calculating reflection coefficients, it also spews out a very nice Smith chart.

Desmond Lee

Nice program. No more messy Smith Chart needed anymore.

MATLAB Release Compatibility
Created with R10
Compatible with any release
Platform Compatibility
Windows macOS Linux
Acknowledgements

Inspired: Smith Chart Utility

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