Yagi Antenna

i am studying wireless newtworking and the questions is "define bandwidth of an antenna. if the elements on a yagi antenna have their diamater increased - what effect does this have on the bandwidth?"

The bandwidth will be increased proportionally to the square root of the diameter.

2008-10-14 23:10:29 by maxim

Diana Eng demonstrates and explains a Yagi antenna, useful for transmitting directional signals. blog.makezine.com

Assuming clear line of sight, and the AP/router is using a 3dbi omnidirectional antenna.

You ought to be able to get a couple of miles out of it if the yagi is aimed carefully.

With carefully aimed parabolics and wave guides instead of coax at both ends, I've managed 22 miles. One link has been running for over 4 years now.

2009-03-19 10:19:18 by luckyman

Price: $74.99 $58.59

Easy installation on masts up to 1 5/8” diameter
Optional upgrade for areas of very weak outdoor cellular signals
Increase indoor signal strength for peak system performance
Provides 11 dBi of gain
Increases Indoor Signal Strength for Peak System Performance

I have a world space reciver which comes with a patch antenna. As the patch antenna is very fragile I am not able to install the same outdoor.
Can any one suggest a design for Yagi antenna which can recive Frequency Range: L Band (1453.384 - 1490.644 MHz), along with a simple design of Low Noise Amplifier.

I am planning to make this at home so please let me know the design as simple as possible.

http://www.alibaba.com/memberhome/fm/fmP roductDetail.htm?productid=11062100& printFlag=true

2006-01-31 20:52:08 by hcl_ind

Price: $99.95

Easy and quick to install
100 Watts, 8.0 - 10.5 dBi Gain
New Dual Band Yagi helps you stay connected in your home.
Works On All Cellular Bands
700 to 2500 MHz Frequency Band

Please get back to me.

Here dude http://www.ac6v.com/antprojects.htm This has a list of antenna projects you can do. Hope it helps!

2006-04-27 19:22:23 by ghettoskater911

like those routers on ebay that you can get with a yagi antenna and they say you can pick up wifi from 10 miles a way

the router is a T-Mobile/Linksys WRTU54G

What they forget to tell you is that the wifi source has to be LINE OF SITE! If your source is an indoor router that is 10 miles away, you will never see it at all even on flat terrain. Yes Wifi can work at long distances BUT the source and the receiver have to have outdoor high gain directional antennas (aimed at each other) and the radio path has to be line of site - no obstructions!

The record for wifi distance at present is 237miles.
Check this.http://www.engadget.com/2007/06/19/venez uelans-set-new-wifi-distance-record-237- miles/

But a Yagi on your router isn't going to work that way unless there is another yagi pointed back at you from the other end and nothing is blocking them! In areas where there are lots of wifi routers you won't get very far at all because of all the interference.

The other thing they forget to tell you is your Linksys home router is about 30-50mw of output and the ones used for long distance are 250 or 500mw out! These specialized routers are designed for outdoor use as well.

2008-08-08 11:07:08 by william m