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I am planning on having the diameter of the cylinder be about 1 eighth of a wavelength and the relative permitivitty about 6. The purpose of the cylinder is to shorten the wavelength and reduce the length of the monopole.
I have been trying to model a monopole antenna with a dielectric cylinder around it using EZNEC 3.0. I have not been successful. Can this be done? Is there another freeware program I could use instead?
Also, I was wondering which kind of polyurethane rubber I should get for the dielectric...
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