View Single Post
Old Mar 17, 2011, 08:57 PM
Daemon is offline
Find More Posts by Daemon
Registered User
Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
30,717 Posts
BTW, whether light or Rf, when a CP wave is reflected, it reverses polarization.
LHCP turns into RHCP after the reflection. This is why a pair of CP antennas
are resistant to multi-path interference. The strongest multi-pathing comes
from the first order reflections off various big objects, and because
those reflections have opposite polarization, they are basically not seen at all
by the receiving antenna on the original polarization, much like how the 3d glasses
don't see the image for the other eye because it has opposite polarization.

ian
Daemon is offline Find More Posts by Daemon
Reply With Quote