 The Moment of Truth… After spending 4 hours of building the “sectored” antenna it is now time to put it under test and see how it performs. I setup a facility to test the antenna. Client Setup. |
 Windows XP SP2 Netstumbler PCMCIA PCI Adapter Avaya/Orinoco PCMCIA Card 1.5 meters pigtail Homebrew Dipole antenna with 123mm x 123mm PCB reflector approx. 2-4dbi gain. |
 The “Sector Antenna” under test, connected to a Linksys WRT54G V2.2 with DD-WRT V22 Final Firmware, the transmit power is set to 20mw only and set to use the right antenna for both TX/RX, the pigtail is a 1 Foot RG58 50 Ohms and the distance of the antenna to the client PC is approx. 6 meters, I don’t have a large space to conduct the test and that is why I reduced the TX power to 20mw. I use the WRT54G stock omni antenna for comparison against the “sector” antenna. |
 My first initial test shows a good result, the “sectored antenna” was focused directly to the client antenna, it clearly shows that there is a 13-14db difference against the Linksys stock omni antenna, I’ve done two test to see if there is any changes while replacing the antenna, each time I replace the antenna I paused the Netstumbler first, I was very impressed with the current result, the EZNEC simulation predicted an 11.5db gain, so far I am getting this result from a close proximity of the AP and the client, I am not sure if I would get the same result on a open space which I will do if my time permits, for now the result is quite good and I am satisfied with it. I also performed another test for the side lobes. |
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November 28th, 2005 at 14:34
Wow! very impressive.
I’ve build several antenna for wifi but have never found a design for a sector before.
I look forward to you long distance results.
Dan
November 29th, 2005 at 17:59
Got the idea, I am building a sector antenna based on your design, but will be using a different radiating element.
January 14th, 2006 at 16:42
I too live in Saudi Arabia, Rabigh is home for me, Facing the same problem, need 150 metes of WIFI coverage. Any help or joined support, would be great.
Regards
Lamar
April 12th, 2006 at 23:42
What is the dimension of center element copper wire.
May 9th, 2006 at 16:31
What are the dimensions of center element.
May 23rd, 2006 at 13:25
Great job guys… Thank for you work…
June 11th, 2006 at 17:35
Perhaps you should put a link to the original design ?
http://www.qsl.net/yu1aw/vhf_ant.htm
June 15th, 2006 at 1:03
@foobar
what makes you think that the link you provided is the original design? are you aware that the 4NEC2 has a template for that particular design? are you also aware that i have the pdf documents the chap did mentioned? he clearly states how he did his and none of your so called “orginal design” has the same dimemsion he used, although it has the same design look. That doesn’t mean he copied it or got the idea from your so called “original” design.
incase you are not familiar with the things i mentioned, STFU.!
give the chap some credit.
June 25th, 2006 at 6:26
Great.
Can we increase the gain by increasing the number of elements.
July 17th, 2006 at 20:53
My first project was a radio telescope 10 years ago, now I would like to build something that is
VERY directional and can send and recieve to and from wifi devices with a range of over 2km
what type of antenna is required I would rather build the thing myself if possible
Please help
August 14th, 2006 at 16:29
Did yoy see amos 9 sector antenna? http://www.qsl.net/yu1aw/vhf_ant.htm Ithink it is a good antenna, i have made one and it works better than pacific wireless SA24-90-17 antenna, and i did not make it with perfect reflector. If some one try to make one i have interesting solutions for easyer making, contact me one zoran.s@verat.net.
August 19th, 2006 at 12:15
I am going to build it soon and let gives u the result