Why is the input impedance seen on various points on the T-line so different (I think the magnitude and phase fluctuates)? Is this something to do with the reflected waves? Does this mean adding in the short/open stub corrects the magnitude of the reflection coefficient? When we add in the short/open stub, this brings the normalized impedance to the center of the smith chart. When we move clockwise down the constant reflection coefficient circle to the real 1, are we adding T-line length to correct the phase of the reflection coefficient? Since the magnitude of the reflection coefficient isn't changing However, adding that much T-line also changes the reactive parts of the impedance, and we had to add the appropriate length short/open stub to correct this. That is where we learned how much T-line length to add. Then, we traveled clockwise on that circle to the real 1.
We started this by plotting the normalized load impedance/admittance, then drawing the constant reflection coefficient circle. We learned how to do impedance matching with a smith chart. Is this correct? So when we go around that constant reflection coefficient circle, is that just following the phase changes with T-line length changes (on the outer peripherals of the chart)? I have the following written down: magnitude of the reflection coefficient does not change with additional transmission line length added, but phase does change. When I'm using Smith Charts, I often have to draw constant reflection coefficient circles.We are focusing on lossless transmission lines right now. I don't know if I'm just overthinking things because I do have some fairly specific questions: I'm taking a RF Fields and Waves class right now and I just needed some help understanding some of the concepts in transmission line theory and how it relates to Smith Charts. Send the moderators a message and we can unblock it as soon as possible. If the problem is truly an engineering problem, we'll allow it, but fixing your laptop or a cracked LCD screen doesn't qualify.ĭo not post Discord links, surveys, or job postings (with the exception of the monthly job post).Ĭan't find your submission? It was probably caught by reddit's spam filters. Tech support help can be found in /r/gadgets. If you have specific, targeted questions regarding homework, we will help you out only if you have provided some beginning work.
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