estqwerty’s wifi antennas

Are You remember this one : http://www.digdice.com/?p=138

This looks very crazy, oddly promising 18 dbi gain.

BUT now there are more info about this, as promised by admin of the GUW forum.

Here is all info in spanish :

http://www.guw.cl/sitio/index.php?option=com_content&task=view&id=110&Itemid=36

The author of this one is Ross Anderson and the original idea for this antenna is from 1984 year the good thing is that all the information about this one is here.

There is interesting version of this antenna build by the author. On his site he describes the how to build this panel antenna from zing fence. The original 2400mhz version is here : http://home.comcast.net/~ross_anderson/2400MHzAntenna.htm

The idea and the info : http://home.comcast.net/~ross_anderson/CurtainQuad.htm

Here some pictures from the em simulation from GUW site :

So as I see this, I can accept that this antenna works. On the site is said that this antenna outperform many commercial ones.

The diagram of this antenna and look from in front :

More pictures of this antenna build and tested for 1296Mhz and 2400mhz :

Interesting about this is the using of speaker wire for matching transformer :

“… Solder a 1+ inch piece of speaker wire to the N connector. One wire goes to the center pin; the other wire to the outside part of the connector. I drilled a small hole in the connector flange for the wire to be inserted into and soldered in place. Leave about 3/4 inch of insulation on the speaker wire (as measured where the two wires are together). This is the transformer, transforming the antenna impedance to about 50 ohms.”

There is also PDF tutorial on the GUW site : guw panel 18dbi.pdf

So this is promising design which I should test soon too. Will be interesting to find out will this design works if it is printed on PCB?

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

http://hiperlink.pl/

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

http://images.google.bg/images?q=MA-WA58-1X&ndsp=20&svnum=10&um=1&hl=en&safe=off&client=firefox-a&rls=org.mozilla:en-US:official&start=0&sa=N&filter=0

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

First I wish to say that I build and tested this antenna, and I was SURPRISED - how this small device is able to work so good! This small antenna outperform my other two homebuilt 14dbi wifi panels.

I used two one sided pcb to create this, but on the zero forum there are pictures where only thin metal sheets are used, and it works again.

The diameter of the circle is equal to the half wave light of the 2.4ghz wifi band or 62mm , so this antenna may be recalculated for other /5ghz/ frequencies.

Now antenna INFO :

Name of Antenna, model : SMCANT-DIFP11

Data sheet can be found on this link : http://www.smc.com/files/AP%5CDS_ANT.pdf

Frequency : 2.400 - 2.500 GHz
Gain : 11 dBi
VSWR : < 1.22
POLARIZATION : Circular
BEAM WIDTH • Horizontal: 70° • Vertical: 70°
IMPEDANCE • 50 Ohms
DIMENSIONS • 25 x 102 x 102 mm

So here is the interesting part - this one is found disassembled on www.zero13wireless.net

Link to the forum www.zero13wireless.net

Very small! Great results!

Dimensions of the reflector are 105×105 mm

8 mm gap between two metal plates of the “circle” and the reflector.

Here are my test whit this antenna - the original test was for other but I need something to compare :

http://www.digdice.com/2007/05/17/d-link-ant24-1200-sector-panel-antenna/

Here is the way to stack two of these homebuilt antennas together : http://www.digdice.com/2007/08/10/httpwwwdigdicecomwp-adminpost-newphp/