"Nigel M" wrote in message
...
I've been looking to make a linear parabolic reflector for Wi-Fi, I've
found quite a few sources, such as:

http://www.genericgeek.com/index.php?q=node/280

http://www.freeantennas.com/projects...te2/index.html

Those I've found all give templates for a parabola, but without any
explanation as to why they have chosen that *particular* parabola, or
the formula used to draw it. As a result, the drawings are a bit
"sketchy" to say the least!

I know radio amateurs are often knowledgeable on antennae, so I thought
this was a good place to ask. I'd like to know a bit more theory, and
the pros and cons of various parabolic shapes.

Nigel -

A very good technical resource is the Green Bay Professional Packet Radio
group.
http://www.qsl.net/n9zia/

You may not be aware that amateur radio (FCC Part 97) actually shares a
portion of the
802.11 "WiFi" (FCC Part 15) spectrum allocation.

Parabolic Reflector analysis calculator
http://my.athenet.net/~multiplx/cgi-...bolic.main.cgi


"To invent, you need a good imagination and a pile of junk" -- Thomas Alva
Edison (1847-1931)