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For quite some time there was debate as to if the lower portion of the antenna radiated constructively with the upper portion. Some claimed the lower 1/4 wave did not radiate while Avanti claimed it did and CST proves it does. When you look at the colors of the radiation currents you can see the currents from the cone are radiating constructively with the upper 1/2 wave. The cone does not simply cancel unwanted radiation, it replaces it with desired radiation and forms an antenna that is active across it's entire length when you include the cone.

[QUOTE="Shockwave, post: 246248, member: 10882"] For quite some time there was debate as to if the lower portion of the antenna radiated constructively with the upper portion. Some claimed the lower 1/4 wave did not radiate while Avanti claimed it did and CST proves it does. When you look at the colors of the radiation currents you can see the currents from the cone are radiating constructively with the upper 1/2 wave. The cone does not simply cancel unwanted radiation, it replaces it with desired radiation and forms an antenna that is active across it's entire length when you include the cone. [/QUOTE]

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