A simple E-field probe for measuring
near-field radiation (to verify
compliance with FCC limits) is described at:
http://www.kn4s.com/rf.html
RF Safety
(about halfway through the document)
My question is this:
Looking only at the two plates separated
by 10 cm, what is the impedance the
plates would present to a measuring
device in the hf spectrum? Is there a
simple way to calculate (estimate) the
impedance? Is the charging circuit time
constant a simple function of the
resistivity of air?
Ordinarily, a 10 megohm instrument would
load such a probe excessively because
the probe's impedance would be much
higher than 10 megohms.
Many thanks.
Chuck
NT3G
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