Posts Tagged ‘vswr’

D-Link ANT24-1800 18dbi wlan antenna

Wednesday, July 25th, 2007

Some NEW info is available about this antenna new pictures here.

This one look interesting so here some info about it.

Most of the info came from these sites :

So no doubt that russians show this antenna to the world – Thanks !

More antenna specifications

Input : 50 ом

Frequency range : 2.4 -2.5Ghz

Gain : 18 dBi

Polarization : Linear, vertical

VSWR 1,5 max

Diagram : horizontal – 15° vertical- 15°Dimensions : 360 x 360 x 16mm

D-Link ANT24-1800 18dbi wlan antenna

More pics can be found in the upper sites.

Drawings from elk again d-link 1800.rar but on You can find another two files which may be the same – I’m not shure.

Dimension between pcb plate and reflector is 9mm.

I’m not sure but, this antenna will be hard to reproduce because we do not have info about thickness of substrate nor dielectric constant of the material. So this is not a option to build and test for me right now.

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 :