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On Sep 3, 10:26*am, Art Unwin wrote:
Yes, that is correct, but the power used on a 1/2 wave dipole is half that of a full wave. On the chance that you meant a full-wave dipole in your quote above, I did a quick comparison of one with a 1/2-wave dipole (linked below). The peak, intrinsic gain of the full-wave is about 1.6 dB greater than the 1/2-wave -- which is due to the narrower lobe it produces. This has nothing to do with "equilibrium." The 2,082 -j583 ohm input Z of the full-wave version is not user friendly. But if zero-loss matching networks are used at the feedpoint of both antennas, then for EQUAL applied power to each, the peak field intensity produced by the full-wave dipole would be about 1.6 dB (20%) greater than from the 1/2-wave version. If the power applied to the full wave dipole was 1.6 dB less than applied to the 1/2-wave dipole, then their measured peak fields would be identical. But that is not a power reduction of one half (3 dB), as in your statement, Art. http://i62.photobucket.com/albums/h8...CompareArt.jpg RF |
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