Lain,
if you can give me some dimensions I will run a NEC-2 simulation of the large
loop (power lines?) and the receive loop. I can move the loop around and see
what we get.
Dave Cuthbert
Senior Test Engineer
NARTE Certified EMC Engineer
Dave Cuthbert LINEAR TECHNOLOGY CORPORATION
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From: [email protected] [mailto:[email protected]] On Behalf Of Iain Summers
Sent: Wednesday, August 02, 2006 1:25 AM
To: [email protected]
Subject: Near field/Far field what is D.
There are various references and opinions as to what constitutes the near
field far field boundary. The common one from antenna theory is 2D^2/lambda
where D is defined as the largest aperture of the antenna.
Has anyone researched what the limitations of this formula are? I am
interested in the far field boundary between 1-30MHz for large loops of wire.
In terms of a loop if this formula is applicable is D the circumference or
diameter of the loop.
Thanks,
Iain
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