Why Does Zin Calculation Differ in Single Stub Matching?

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SUMMARY

The forum discussion focuses on the discrepancies in Zin calculation during single stub matching, specifically when matching a load of zl = 0.5 + 1.5i to a normalized line with Z0 = 50. The user utilized both a Smith chart and analytical methods but encountered a mismatch in results, with the calculated Zin yielding 0.5 - j1.5 instead of the expected 0.5 + j1.5. This indicates a potential misunderstanding in the application of the Smith chart or the calculation process involved in single stub matching.

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baby_1
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Hello
As you see this problem with single stub matching
I matched zl=.5+1.5i to a normalized line (Z0=50)(I did it with smith chart and analytically) but as you see in the second picture as I calculate Zin it doesn't get me the same result (.5+1.5j).
2390138400_1435297056.jpg
what is my wrong?
 
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baby_1 said:
Hello
As you see this problem with single stub matching
I matched zl=.5+1.5i to a normalized line (Z0=50)(I did it with smith chart and analytically) but as you see in the second picture as I calculate Zin it doesn't get me the same result (.5+1.5j).
2390138400_1435297056.jpg
what is my wrong?
In the first picture the load is 0.5 + j1.5 and in the second it is 0.5 - j1.5.
 

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