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Author Topic: Element Diameter  (Read 733 times)
KB9ONN
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Posts: 3




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« on: December 12, 2000, 12:25:44 AM »

When designing and constructing dipoles and similar antennas, at what point does the thickness or diameter of the radiating elements come into play. If I remember correctly, it has little effect below 30MHz. However, I use only bands above 30MHz. Should I even bother with this, or is it a waste of time?
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KF7CG
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Posts: 866




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« Reply #1 on: December 13, 2000, 01:29:12 PM »

If you can get a copy of one of the antenna modeling programs it will help you figure some of this.  As a rule of thumb, larger diameter elements are generally shorter in length the smaller diameter elements for the same frequency.  Also, larger diameter elements tend to increase bandwidth.
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WB6BYU
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Posts: 13482




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« Reply #2 on: December 14, 2000, 06:01:47 PM »

If you are just designing dipoles, and you will adjust the length for
resonance anyway, then it won't make much difference to you.
It is of most importance when building yagis and calculating
the lengths of the parasitic elements.
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KL7IPV
Member

Posts: 984




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« Reply #3 on: November 11, 2001, 02:56:31 PM »

For more info on the affects size has on bandwidth, look into Cage Antennas. Multiple wires in a fashion that "fools" the radio into thinking the wire size is much larger that it really is. You find some info in both the ARRL handbook and the RSGB handbook. Good luck.
73
Frank
KL7IPV
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