[amsat-bb] Re: Gain VS Bandwidth at 2.4GHZ

Greg D. ko6th_greg at hotmail.com
Sat May 16 19:49:49 PDT 2009

Hi Don,

Perhaps use a design such as a Lindenblad or a Quadrifillar Helix; you don't have enough space to put one on the laptop, so it's got to go on the AP.  

Of course, you lose 3db going circular->linear.  Maybe that's the problem.  They'd rather double the radios and put one vertical, and the other horizontal (or put 3 in there with 802.11n)...

Greg  KO6TH

> From: don at donferguson.net
> To: AMSAT-BB at amsat.org
> Date: Sat, 16 May 2009 14:48:56 -0700
> Subject: [amsat-bb] Re: Gain VS Bandwidth at 2.4GHZ
> Greg,
> You got me thinking about going circular! I am wondering how you build an
> omnidirectional Circular antenna? What am I missing as I don't want my
> router or my notebook to be directional?
> Don
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of Edward Cole
> Sent: Saturday, May 16, 2009 12:22 PM
> To: Greg D.; lucleblanc6 at videotron.ca; amsat-bb at amsat.org
> Subject: [amsat-bb] Re: Gain VS Bandwidth at 2.4GHZ
> At 10:33 AM 5/16/2009, Greg D. wrote:
> >------------------snip---------
> >Pretty much every Wi-Fi antenna I've ever seen is linearly 
> >polarized.  The "diversity" antennas are two separate antennas, 
> >usually one vertical and one horizontal, with separate cables going 
> >to two radios.  Going circular would seem to be a no-brain 
> >improvement for the Wi-Fi crowd, but I think I've only seen one vendor do
> it.
> >
> >Enjoy the new toy,
> >
> >Greg  KO6TH
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