Posts Tagged ‘wlan’

WIFI WLAN Patch Antenna with SWR Adjustment

Thursday, February 25th, 2010

I really liked this one.

If anyone have one of this network analyzers and do not use it – you can donate it :)

Info says :

How to make a WIFI antenna which can be adjusted for best standing wave ratio
from WLAN channel 1 to channel 11

And link to a video :

Panel 22 dBi 5 GHz WiFi

Monday, August 18th, 2008

Panel 22 dBi 5 GHz

Posted on : Schematy anten na 2,4 i 5 GHz – Forum Sieci Bezprzewodowe WLAN WiFi

Not much info is available.

I cant find web translator to English.

Author of the post is adamol :

“Panel 22 dBi 5 GHz, odległość spodniej warstwy od ekranu 6-7 [mm], wymiary w [mm], druk dwustronny, cienki laminat gr < [1 mm]”

HERE what I thing understand – please if anyone can translate this to English post a comment whit translation.

Panel 22dbi 5ghz , from the PCB plate to the reflector 6-7 [mm], dimensions in [mm] , thickens of the PCB board less than [1mm]

22 dbi 5ghz panel wifi antenna

22 dbi 5ghz panel wifi antenna

2.4Ghz Yagi Antenna for WIFI – using single sided PCB board

Friday, October 5th, 2007

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 :

layout.JPG

Here some pictures whit dimensions :

quote1.jpg

quote2.jpg

antenn9.jpg

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 :

antenn6.jpgantenn7.jpgantenn13.jpg

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 :

antenn14.jpg

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