Posts Tagged ‘yagi’

Biquad Yagi 2.4Ghz Antenna

Sunday, October 21st, 2007

At las time a lot of hits came from a Poland there are some good wifi forums but I cant find online translator 🙁

Here one interesting antenna from

This is some strange Biquad and Yagi hybrid.

biquad yagi antenna

Dimensions :


deflektor- 36
quad- 34
direktor1 33
direktor2 32
direktor3 31
direktor4 30
direktor5 29

There are no results or testing for this antenna.

Dlink Ant24-1201 Yagi WIFI Antenna

Friday, October 12th, 2007

Another Yagi whit interesting design, this time from Dlink.

Original link :

PDF Specification :


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.

vista_superior_126.jpg vista_inferior_152.jpgdlinkant241201mg7.jpg
You are wondering were did You saw similar dipole feeding ??? 🙂 I tell You :
The feeding of the dipole is very similar.

Dimensions for this 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 :

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.