El 27-09-12 12:11, John escribió:
I ( and probably many others) have a wireless router in the house which in
my case runs at 2.4Ghz via a single antenna about 10 cm high. Certainly
omnidirectional which is my issue. As its against a wall near the road 1/2
the signal
keeps neighbours and passing traffic with a WiFi point. Or at least is just
wasting 1/2 the radiated power.
My questions are : Is putting a reflector adjacent to the antenna on the
road side sufficient to screen off the signal? A follow on from that is
would that reflected signal boost signal levels in the house?.
If the info provided is not detailed enough, sorry about that. Question is
born of ignorance which is rectifiable!
Many thanks
John




If you put some aluminum kitchen foil at around 0.25 lambda (1.2", 30
mm behind antenna, about 1 square foot in size) behind the antenna,
you will reduce the radiation to that direction and icrease the
radiation perpendicular to the aluminum kitchen foil. The radiation
pattern will be close to that of a single resonator patch antenna.

You will not screen it completely as due to multiple reflection it
may/will reach the road again, but it may improve indoor coverage.

--
Wim
PA3DJS
www.tetech.nl
Please remove abc first in case of PM