Creating a Smith Chart with load impedance only

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Adham Elkhouly
Adham Elkhouly 2023-10-14
回答： Sam Chak 2023-10-15
Hello,
I'm currently working on generating a Smith chart and utilizing it to determine the reflection coefficient using MATLAB. The only information I have is the load impedance (ZL). I've attempted the following code, but it doesn't work and Smithplot needs more information:
ZL = 3; % Normalized
figure;
smithchart;
addSmithMarker(ZL, 'o', 'Load Z_L = 3\Omega');
Can someone please help?
Thank you in advance.

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采纳的回答

Sam Chak
Sam Chak 2023-10-15
Ran in:
Hi @Adham Elkhouly
I'm not well-versed with plotting Smith Chart. But starting R2023b, the smithplot() function replaces the smithchart() function. For details, check out the documentation at this link:
https://www.mathworks.com/help/antenna/ref/smithplot.html
amp = read(rfckt.amplifier,'default.s2p');
Sa = sparameters(amp);
Ya = yparameters(Sa);
smithplot(Ya, 2, 2)

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