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On Wed, 29 Oct 2003 04:42:45 GMT, "BuckEye" wrote:
Why does the coil make it that way. Because it cancels out the capacitive reactance of the short antenna. Nowhere in any theory does it state that. Its just another ways to match the coax to free air. That's all the antenna does. Sorry, yes it does. Its not matching the coax, its cancelling the reactance. Why do you keep trying to say its "electrically" a 1/4 wavelength. Just because it can be loaded with a matching device ? Shows a good match. This could be taken to the extreme and if the antenna was reduced to only one inch in length, tuned and matched would it be electrically" a 1/4 wavelength . Yes. A 1" antenna would have a capacitive reactance of 3,000 or greater. When the reactance is canceled out, you would end up with an antenna with a feed point impedance of 0.05 . It would be resonant, but wouldn't match 50 ohm coax. No its just a resonate circuit with no relation to a wavelength. In fact a conductor does not have to be any wavelength to radiate at all. No, but to be resonant it does. When matched any length of wire will emit all the power applied to it. If you don't think that canceling out the capacitive reactance of a shortened antenna doesn't change its electrical length, why does its current distribution change? |
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