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Using the Smith Chart , we will investigate some of the application and uses of the Smith Chart . For the text, we will use my new "mini Smith Chart" which is reproduced below. Clearly, there is notmuch detail here, and our answers will not be as accurate as they would be if we used a full size chart, but we want to get ideasacross here, not the best number possible, and with the small size, we won't run out of paper before everything is done. Note that we have a couple of "extras" on the chart. The twoscales at the bottom of the chart can be used to either set or measure radial variables such as the magnitude of the reflectioncoefficient , or the VSWR, as it turns out that in practice, what one can actually measure on a line is the VSWR. Remember, thereis a direct relationship between the VSWR and the magnitude of the reflection coefficient.
Let's start out with the simplest thing we can, with just a generator, line and load . Our task will be to find the input impedance, , for the line, so that we can figure the input voltage. For this first problem, we are going to start out with all the basics. In later examples, we probably will only give lengths inwavelengths, and impedances in terms of , but let's do this the whole way through.
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