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![]() "Wes Stewart" wrote if you go he http://www.k6mhe.com/n7ws and look at either Note 1 or 2 and then look at figures 1 and 2 this might change your mind about the current distribution. Nobody is disputing the current rise through a coil. In fact, I have been pointing it out. The coil does distort the current away from the nice cosine envelope of a 1/2WL thin wire dipole. Your graphs show standing wave current which doesn't flow. (Its phase angle doesn't rotate.) Therefore, the magnitude of the standing wave current can be any value depending upon where it is located in the system. Wes, please take a look at http://www.qsl.net/qrzgif35.gif to find out why standing wave current can have any value and is thus unimportant. EZNEC plots the current in much the same way that you have. So are the EZNEC results wrong and yours right? The fact is that a standing wave current plot is close to meaningless. Why are we continuing to discuss standing wave current? What we need to plot is the forward traveling wave current and the reflected traveling wave current which are the two components of your standing wave current graphs. Do you have any simulation software that will plot the forward current and reflected current? Nobody is going to understand what is really happening until we get a plot of those two component waves or at least an estimated graph of the underlying superposed currents. In fact, how about your best estimate of a graph of forward and reflected currents through the coil including phase shifts? Only then are you likely to understand what we are talking about.. -- 73, Cecil, W5DXP |
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