estqwerty’s wifi antennas

As I maybe mentioned in my previous post hlssa program gives some very strange results about thickness dimensions of the waveguides. The program says that is passable to build slotted waveguide whit an only 100mm to 25mm tube or waveguide for 2.4ghz band.

Till now I was unable to find anything that confirm this, but now I sow several interesting pictures :

Pictures are from here : www.starhill.org

Look at this - there is NO WAY that this is be 100×50 mm this looks like more like 20 or 25mm !!!

So this will make passable to use other, more easy to be found on the market tubes.

More pictures :

And finally one more thing - 20 to 22dbi omni directional slotted waveguide 25mm thin PDF file whit specification

18 or 19dBi - no mater for this one . Several dipoles printed on PCB board. Have more dipoles You get more dBis. Will it be 10 12 or 24 - You decide how much do You need.

This is defiantly homemade design. I have one small antenna whit only 4 dipoles - and it works great, so this antenna should work fine. Also will be easy to be rescaled for other bands - 2.4Ghz or 5Ghz only change dimension of the dipoles.

19dbi panel wifi antenna link to picture

Here is the photo from the other side of the pcb board and other part of feeding element

Picture is from this address : diy.wifi-live.pl/node/4 where also have blueprints for less dbi antenna .

On www.zero13wireless.net also has several files posted by sushisan .

Link to files 18dbipcbdipoleantenna.zip

(2.1 - 11 GHz)
This log periodic printed circuit board antenna gives great performance from 2100 - 11000 MHz. This range includes wireless networking at 2.4GHz (802.11b/g) and 5.8GHz (802.11a).

Here are dimensions of this antenna.

http://www.g0mrf.freeserve.co.uk/cband.htm

And a link to a site from were You can buy this only for 12$

http://www.wa5vjb.com/products1.html

On http://wireless.com.pt/forum/index.php?PHPSESSID=3a383f0ff0f782f5a00fea2c1e20e5d9&topic=15658.0 You can find interesting antenna projct cardboard slotted waveguide.

Aluminium foil and cardboard is used to build slotted waveguide wifi antenna.

Here some pictures :

Last picture is 11Ghz and 2.4Ghz versions compared.

Waveguide is tested and the resuts are very good - more than 14dbi are reached!

This is a good way to fast build and test antennas, also quick modifications are possable.

The bad thing is that You can not solder aluminium - which for this antenna is not a problem.

The author of this post call this “40cents antenna” and he has several different types of antennas builded and tested.

You can find the links on the http://wireless.com.pt forums.