"Roy Lewallen" bravely wrote to "All" (18 Dec 05 00:52:58)
--- on the heady topic of " Antenna reception theory"

RL From: Roy Lewallen
RL Xref: core-easynews rec.radio.amateur.antenna:221453


RL Richard Harrison wrote:
Reg, G4FGQ wrote:
"Just a number please."

Given 1 volt per m as the field strength, and a 1-m antenna parallel to
the electric vector of the wave, the open-circuit voltage at the end of
the wire is 1 volt.

RL Relative to what? The other terminal has to be extremely close to the
RL end of the wire in order for the voltage to be single valued.

RL The best you can get across the receiver input is
0.5 volt when there is a conjugate match between the receiver and the
antennna.

RL Sorry, that's not just a little wrong, it's wrong by orders of
RL magnitude. For example, a 1 meter long 10 mm diameter dipole,
RL terminated in the complex conjugate of its self impedance (load Z =
RL 0.8855 + j6030 ohms), in a 1 V/m field, has about 1667 volts across
RL the load. Hardly a half volt!


All this talk of high RF voltage has got me a little peckish.
Anyone up for hotdogs and smores?

A*s*i*m*o*v

.... I'm precise. He's discriminating. You're picky.