The cookie is used to store the user consent for the cookies in the category "Analytics". This cookie is set by GDPR Cookie Consent plugin. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. The Smith chart: more vital after all these years.John Dunn is an electronics consultant, and a graduate of The Polytechnic Institute of Brooklyn (BSEE) and of New York University (MSEE). We can extend this plot to negative values of R as well, but then the outermost circle diameter can get really big. The outermost circle shown here for R = 0 is not an absolute limit. These two annotated views of the Smith chart show the results of varying R or varying X. Varying R or varying X causes both the real and the imaginary parts of gamma to vary. If we hold a constant value of X and allow R to vary, we get a second set of curves above and below the horizontal axis which seem to emanate from that point of tangency we just spoke of. If we hold a constant value of R and allow X to vary, we get one set of curves that look like circles tangent to each other at the far right. We graphically plot the real and imaginary parts of gamma.
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