Cecil Moore wrote:

Reg Edwards wrote:

Reflected power is a mere fiction. Power which is not radiated from an
antenna never actually arrives there. In fact it never leaves the
transmitter.


Therefore, radar cannot work since it relies upon reflected
joules/second. Mirrors also cannot work since there is an ExB
amount of power in those reflections.

I made note of this in a thread I just started. Is this a good analogy?
Certainly the signal goes out, hits something and then comes back.
Wouldn't this scramble the signal by some definable amount in an antenna?


Reg, for a 291.5 ohm antenna to accept 100 watts requires the forward
power to the antenna to be 200 watts. 100 watts is accepted by the
antenna and 100 watts is rejected by the antenna. 200 watts to the
antenna is routinely accomplished by a 100 watt ham transmitter and
a Z0-match provided by a tuner.

This is exactly like a partially silvered mirror that reflects half
the irradiance and allows half the irradiance through.

Assume a one second long lossless unterminated transmission line.
Pour 1000 watts into it for one second. During the next second, we
disconnect the line from the source and you grab the two wires, one
in each hand. Then tell us whether reflected power exists or not.

All we have to do is get an antenna that is 186,347.3233361 miles long.
Or would that be 122,989.233401 miles?

At any rate, the answer should be pretty easy to verify by using a very
long but practical sized antenna. Anyone done that?

- Mike KB3EIA -