estqwerty’s wifi antennas

Another Yagi whit interesting design, this time from Dlink.

Original link : http://www.zero13wireless.net/foro/showthread.php?t=1150

PDF Specification : http://www.dlink-me.com/ftp/antennas/pdf/ANT24-1201.pdf

Gain should be around 12dbi.

And here it is what is inside : usual yagi directors are madded from aluminum /i think/ and pcb dipole used as feeding element.

You are wondering were did You saw similar dipole feeding ??? I tell You : http://www.digdice.com/2007/09/28/sector-antenna-grad2487/
The feeding of the dipole is very similar.

Dimensions for this antenna :

All my links for antennas whit multi polarization

List of all products of wifi-plus : www.wifi-plus.com/antennas
Lets begin whit this page here : http://www.dslreports.com/forum/remark,13636968

You can find comparison of 5dbi multi polarized to 7dbi rubber duck : www.zero13wireless.net
Tested model is : MP 5 OMNI 5dBi CHP

Dimensions of the 17dbi model :

http://www.zero13wireless.net/foro/showpost.php?p=5579&postcount=2

Here a tread whit all the dimensions and tests, also home build versions of 17dbi antenna :
http://www.zero13wireless.net/foro/showthread.php?t=881

Here You can find a test between 12dbi MP and 14 Yagi in the forest :
http://www.zero13wireless.net/foro/showthread.php?t=1750

MP 12dbi The same as 17dbi version only shorter :

http://www.zero13wireless.net/foro/attachment.php?attachmentid=1115&d=1185362179

Pictures of 12dbi version

Pictures of Bullet Omni 3dbi (2.4/5.X GHz) and Omni 5dbi (2.4/5.X GHz)
http://www.zero13wireless.net

In the net there was also some pdf pathent files one is here : click

I don’t like Yagi antennas /sorry/, and I never try to make one , but this look interesting - it is only one side pcb design that differ from the most dual sided similar.

On the side is said that this antenna is a clone to a commercial one, but not a name or model is mentioned.

The dual sided board is needed to make the feeding point of the yagi antenna - here we have something very interesting and different to be able to make all needed parts on one sided PCB board. In fact this is dipole.

Link to the page : http://www.aribg.it/Tech/WiFi/Yagy24ydm/yagi24ghz.htm

Here is schematic :

Here some pictures whit dimensions :

On the second picture You can see haw to assemble the dipole - this is the interesting part. This antenna is feeded by dipole not whit loop like most Yagi antennas. Here they make a balun whit the stripped coax and the pcb board.

There is also one aluminum disk used to hold the board that is used as reflector :

On the site is said that this antenna have 11.5dB gain. And for last there is a SWR test for this antenna pretty good results I thing :

The peek is little out of wifi band but we still may get very good results for wlan applications.

I always wonder haw to feed waveguide or horn from the back - all the designs are feeded from side as usual Cantennas.

Now I have picture - file is pretty old but interesting.

I cannot remember from where I take the PDF file to write a link. Here it is 8602-4.pdf ,I didn’t change the name of the file.

Most interesting is that the connector is on the back - also wide band feeder is used and antenna is DC grounded - which differ from original cantenna design.

I used a lot of cantenas and this will be tested at first possible moment.

Also may be used in slotted waveguides.