Let me try this one more time. You had posted earlier and I commented
on this:

"A receiving antenna must be resonant to enable full acceptance of
available energy, and it must be matched to avoid re-radiation of more
than 50% of the energy it is able to grab."

I commented on the first portion of your statement (above). My only
point is that it makes no difference if an antenna's is resonate or
not in determining how much energy it grabs.

That's it, nothing more.

73
Danny, K6MHE


On Mon, 23 Feb 2004 13:43:55 -0600 (CST),
(Richard Harrison) wrote:

Dan Richardson wrote:
"The fact is resonance or not is not the determining factor."

Resonance of the antenna system is the determining factor in the
performance of a standing-wave antenna.

This is an amateur group, so you may check the "ARRL Antenna Book". My
19th edition has resonant antennas on page 9-2.

Fig 2 is a series RLC circuit representation of the typical
standing-wave antenna.

Ohm`s law should be noncontroversial (I=E/Z).
To maximize I with a given voltage, Z must be minimized. Z in the series
circuit is the phasor sum of R and X.

R has probably been established firmly in an antenna by its construction
and placement but we can tune the antenna system to make it resonant so
that we eliminate X to get maximum current into the antenna and to
thereby get maximum performance out of the antenna.

Best regards, Richard Harrison, KB5WZI