This is first open WiMAX antenna so this may be interesting to you.
The lack of cheap Wimax gadgets is the reason not to see lot of this things taken apart.
The professional work as you can see. I found only this pictures, no dimensions available .
Band : 5ghz
Gain : 28dbi
All pictures may be found on www.carookee.com forum.
All these antennas are “Inset-Fed Microstrip Patch Antennas“ type - and that is all from me 
.
Some info may be found www.mwrf.com
Also if interested Youmay search google for “quarter wavelength patch”
There was different pics of this design - it looks like it is ofen used by manufacturers.
Thanks to the comment by Christian i sow for first time 14dbi version of this panel.
A lot of different versions 14 18 and 20.5 dbi pannels 2.4ghz whit different number of pathes.
So lets begin whit 14 dbi pannel.
Original name : unknown
Gain : 14gbi
url : http://www.carookee.com/forum/
Next one is 18dbi Wimo PA-13R-18. There is a lot of links to this antenna. 16 patch element are used.
This is first posted here www.vallstedt-networks.de
Drawing by elk form 2400mhz.net.ru PA-13R-18.rar
Third one is also new entry for me but it came out from here http://2400mhz.net.ru. This one is 20.5dbi gain.
Original name Delta DS 2400-21
posted by elk drawings DS 2400 - 21.rar
And finally one 5ghz antenna whit same type of patches used. Gain 23dbi and again 16 radiating elements are used. Found in http://www.lan23.ru/
Original name Panel 5х-19
web page : http://www.bester-ltd.ru/
drawing by igor p. panel 5.1-5.3.tif
Recently found this one selling - this is good sign usually. Good that i have some more pics of this antenna. Blueprints are lost between my drives.
Keys to search in google - MA-WA58-1X and A73102
Antena mikropaskowa 23 dbi 5GHz
found in some forum - i believe that there was blueprint on wifi-connect.ru 
http://www.air-xs.de/pics/antennen/5ghz/tripol_ma-wa58-1x_mnt_platine.jpg
Mounting : 
or this : http://www.tripol.de/laden/a73101.htm
D-Link Ant24-1200 Sector Panel Antenna
Gain : 12 dbi
web site : www.zero13wireless.net
So I make one but still cant get it working.
In the test witch netstumbler - i get too low results - may be something is wrong, maybe material of pcb board is not the same
My TEST for dwl 12dbi thing 
something is wrong whit my ones :
this is room test - distance ~2m
linksys wap11 whit original antenna - AP
zydas zd1211 usb whit rpsma connector soldered and 5 cm coax soldered to antennas.
various antennas tested to be able to compare result.
Second test - tv tower ~1.5 to 1.8km
Same antennas - near same ressults
rubber duckie 2dbi , smc 11 clone , trend omni - original , interline 14 dbi clone and dwl 12dbi
I tried different position of the reflector I used another piece of pcb - no results .
Maybe the material of the pcb board does matter???
Another thing is the low result of interline 14 panel - i was tested it before and get good results.
I’ll make some more tests but i’m loosing faith in this one
Here is the link to the forum from where i take blueprints for this one http://wireless.com.pt/forum/viewtopic.php?t=14978
