[Lowfer] Loop Radiation Resistance

[Bill Ashlock]

Lyle,

>But if the loop is modeled in "free space" rather than "above ground", t=
he extra 3 dB
>of loop gain goes away.

Probably this 3db is not realized at higher frequencies where the ground =
is electrically farther away and the ground behaves less like a good cond=
ucting surface for the wave. And a lot of TX loop experimentation begun i=
n the mid '80s (in fact, pretty much the ORIGINAL loop experimentation) h=
as been in the HF portion of the spectrum, Ted Hart's work, for example. =
He claims 3 db in one of his articles when a ground screen is added. The =
screen must not be needed at LF.

BillGet more from the Web.  FREE MSN Explorer download : http://explorer.=
msn.com


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