Posts Tagged ‘homebuild’

Wi-Fi SWR Meter

Tuesday, November 20th, 2007

On the are updated page for building wifi swr meter. mcWit was able to find replacement of the BAT62-03W Schottky diode used by in his design. New diode is hsms-2822

There are several changes in the elements in due diode change. I can’t understand everything written on the site. But everything is there and all is build and tested.

Now just need to wait for more documentation.

Here is a picture of the finished device :

wifi swr meter

11dbi SMC Panel

Sunday, May 13th, 2007

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 :

Frequency : 2.400 – 2.500 GHz
Gain : 11 dBi
VSWR : < 1.22
BEAM WIDTH • Horizontal: 70° • Vertical: 70°
DIMENSIONS • 25 x 102 x 102 mm


So here is the interesting part – this one is found disassembled on



Link to the forum



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 :

Here is the way to stack two of these homebuilt antennas together :