At last I have collected a lot of pictures of different wlan antenna splitters .
Some blueprints and links too.
Some dimentions ARE NOT for 2.4ghz !!!
napoliwireless.net powersplitter
http://www.uksmg.org/split.htm Similar to up picture but using coaxial cable.
Wilkinson power splitters.
This is just a pics found in the net or cant remember links for them.
http://home.teleport.com/~oldaker/power_dividers.htm
vhfman.freeuk.com
The idea/may be/ and ps file and this pic 
are from here http://www.wireless-homebrew.com/wireless/appendixF.html#6
If some one explain me this thing here I’ll buy a couple of bees π
“It is possible to use old 800 MHz cellular phone power dividers/combiners at 2.4 GHz because of the 3rd harmonic relationship.”
Different designs :
I found this one completed whit some pics – sorry again can’t find link to original file. Send me a link if You know it.
PCB Splitter wlan design from http://df2ck.de/tech/splitter/
Coaxial line splitter / divider for four dipoles or biquads
http://www.dynaperl.de/wimo/?w=1217
http://www.dynaperl.de/wimo/nachbau/?w=1217
Next there is another 4 way coax splitter :
You can search for 23cmhybrid.pdf or Hybrid-Double-Quad-Array-D.pdf
http://www.google.bg/search?q=23cmhybrid.pdf&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
http://www.google.bg/search?q=Hybrid-Double-Quad-Array-D.pdf&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
Last this one is without coax :
http://www.frars.org.uk/cgi-bin/render.pl?action=link&url=1162
And finally some links :
http://home.iae.nl/users/pe1ogf/power.htm
http://www.hdtvprimer.com/ANTENNAS/merging.html
http://www.ee.bilkent.edu.tr/~microwave/programs/magnetic/mwpower/wilk1.htm
http://rfdesign.com/mag/radio_designing_lc_wilkinson/
http://www.microwaves101.com/encyclopedia/couplers.cfm
http://www.pa3csg.hoeplakee.nl/hybrid/hybrid.html
