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Groundplane for transponder
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February 5th 04, 10:30 PM
Bob Kuykendall
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Earlier,
(Jay) wrote:
- required dimension
Larger in radius than the wavelength you are working with.
As Wayne Paul pointed out, for a quarter-wave whip like a typical
transponder antenna, a quarter-wave radius ground plane is really all
you need. A full wavelength would be around 22" in diameter. That's
way overkill for one of those little antennas.
My actual experience seems to validate that a 5.5" dia round or square
ground plane is adequate.
Thanks, and best regards to all
Bob K.
Bob Kuykendall