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Antenna design question
In message , Richard Clark
writes On Tue, 21 Oct 2008 13:30:39 +0100, Ian Jackson wrote: Are there any calculations or charts for centre impedance of a dipole in free space, starting from zero length, and going out to infinity? Institutional memory here is so slight: "Theory of antennas of arbitrary size and shape," Proc. I.R.E., 29, 493, 1941 and S. A. Schelkunoff, "Advanced Antenna Theory, " John Wiley and Sons, Inc., New York, (1952) Accessible reference work can be found by searching the PTO with his patent number: 2235506. 73's Richard Clark, KB7QHC Thanks. As I said in my reply to Dave Platt, I would have thought that the feed impedance of a dipole over a wide range of frequencies/lengths (ie 'very short' to 'very long') would have been fairly typical rule-of-thumb required information for those interested in antennas. However, this does not seem to be the case. -- Ian |
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