This is just a bigger version of previous coax antenna.
http://www.zero13wireless.net/foro/showthread.php?t=3964
http://www.digdice.com/2008/03/30/small-coax-omni-antenna-for-wifi/
There is no info available about gain or anything els.
Used coax is RG-213
On site also suggest some sort of franklin dipole :
I thing that this design will be fun to test.
May be will work ? What you thing ?
Found on http://www.zero13wireless.net/foro/showthread.php?t=3964
I cant find original site of this antenna there is links on Zero13wireless forum.
I cut a lot of coax without any success before time in attempt to make a coax omni antenna.
This thing here is looking different. But maybe will work.
This is the idea :
30mm in the beginig 1/4 wave – may be patching section.
40 mm of outer of coax is used to dephaseing sections.
60 mm sections as 1/2 wave radiators.
And that is.
Link to the original site whit pictures : http://wavetenna.blogspot.com
This omni antenna specification are available from Ovisilink or like AirLive.com WAE-085GP
Band : 2.4Ghz 802.11b 802.11g WIFI bands
Gain of 8.5 Dbi
Connector type – Female N-Type
Polarization – Vertical
Dimensions – 570 x 29 mm
And pictures are from the rt_rex site http://www.wavetenna.blogspot.com/
So this is a quite interesting antenna. This is the first REAL antenna that is similar to this strange picture that circulate on the internet :
The dimension did not match but the idea is very similar. quite interesting match really.
There is nothig on the net about this Radproject 2000 or anything about this upper design.