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#1
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Roy Lewallen wrote:
Cecil Moore wrote: Well, I have already posted the equations. . . Well, no you haven't. Why do you keep saying that? Because it's true. Here are the equations again. A loading coil exists in a standing-wave antenna. The forward current through the loading coil is I+. The reflected current through the loading coil is I-. The net current at any point in the coil is I+ + I- (phasor addition) The magnitude of the net current depends upon the phase of I+ and I-. Itot = I+ + I- There's the equation that I have already posted many, many times. Sorry you missed it. A rough estimate of the net current at the top of a loading coil can be had by estimating the number of degrees occupied by the coil and assuming a net current cosine function through the coil. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
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#2
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Roy Lewallen wrote:
Cecil, In a simple monopole with one inductor, let L1 be the distance from the base of an antenna to the bottom of the loading coil in meters, L2 the length of the loading coil, L3 the distance from the top of the loading coil to the top of the antenna. I is the base current, L the inductance value and F the frequency. You can assume the antenna is very thin. Since your theory is so elegant and well developed, and you've had such an excellent education at Texas A&M, it shouldn't be difficult at all for you to write a couple of simple equations which give the currents at the two ends of the coil. In the time-honored methods of science, your equations can then be tested against modeled and measured results to prove the validity of your theory. Roy Lewallen, W7EL Cecil Moore wrote: Well, I have already posted the equations. . . . . . Here are the equations again. A loading coil exists in a standing-wave antenna. The forward current through the loading coil is I+. The reflected current through the loading coil is I-. The net current at any point in the coil is I+ + I- (phasor addition) The magnitude of the net current depends upon the phase of I+ and I-. Itot = I+ + I- There's the equation that I have already posted many, many times. Sorry you missed it. . . . Helloo. . . Anybody home? Roy Lewallen, W7EL |
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#3
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Roy Lewallen wrote in message ...
Roy Lewallen wrote: it shouldn't be difficult at all for you to write a couple of simple equations which give the currents at the two ends of the coil. Itot = I+ + I- There's the equation that I have already posted many, many times. Sorry you missed it. Helloo. . . Anybody home? Roy, you asked for a couple of simple equations which give the currents at the two ends of the coil. Here they are again: Itot(bottom) = I+(bottom) + I-(bottom) Itot(top) = I+(top) + I-(top) Exactly what equations do you use when you make your assertions about the current at each end of a coil? Please be specific. -- 73, Cecil, W5DXP |
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