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![]() Exactly the same thing can be said about a lossless unterminated transmission line. If lumped circuit analysis doesn't work on transmission lines with reflections, why should it be expected to work on antennas with reflections? -- 73, Cecil http://www.qsl.net/w5dxp While I agree with this statement, it still doesn't prove anything about the value of the characteristic impedance and electrical length of a loading coil and the relationship between these parameters and the inductive reactance of the loading coil. This is what bothers me about the claims that the "cosine law" can be used to predict the current taper in the loading coil. Seems that there is a big leap of faith taking place when going from the observation (which I believe is correct) that current taper is caused by standing waves on the resonant antenna, and a "law" that says what we can predict that taper with a simple formula without saying anything about the shunt capacitance per unit length and series inductance per unit length of the loading coil, quantities which normally bear directly on the characteristic impedance and velocity of propagation of the EM structure (at least in an analogous transmission line case). 73 de Mike, W4EF............................................. Exactly the same thing can be said about a lossless unterminated transmission line. If lumped circuit analysis doesn't work on transmission lines with reflections, why should it be expected to work on antennas with reflections? -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |