antenna reflector
Roy Lewallen wrote:
Richard Harrison wrote:
me wrote:
"So...is there a 180 degree phase change at the reflector?"
Yes. The incident and reflected components of electric field exactly
cancel at the surface of a perfect reflector due to the short-circuit.
But the incident and reflected components of the magnetic field don't.
Is that cool or what?
Just falls out of the fact that while there's no voltage (the perfect
conductor enforcing a constraint of E=0) there can be current flowing,
so there can be a net magnetic field.
of such cool stuff are things like the reversal of CP sense made.
|